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open-consul/website/content/docs/k8s/helm.mdx
Iryna Shustava b5498642d0
Update Helm reference docs (#9463)
2020-12-23 11:42:36 -08:00

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---
layout: docs
page_title: Helm Chart Configuration
sidebar_title: Helm Chart Configuration
description: Configuration for the Consul Helm chart.
---
# Helm Chart Configuration
## Configuration (Values)
The chart is highly customizable using
[Helm configuration values](https://helm.sh/docs/intro/using_helm/#customizing-the-chart-before-installing).
Each value has a sane default tuned for an optimal getting started experience
with Consul. Before going into production, please review the parameters below
and consider if they're appropriate for your deployment.
<!-- DO NOT EDIT. The docs below are generated automatically. To change, edit
the consul-helm repo's values.yaml file -->
<!-- codegen: start -->
- `global` ((#v-global)) - Holds values that affect multiple components of the chart.
- `enabled` ((#v-global-enabled)) (`boolean: true`) - The main enabled/disabled setting. If true, servers,
clients, Consul DNS and the Consul UI will be enabled. Each component can override
this default via its component-specific "enabled" config. If false, no components
will be installed by default and per-component opt-in is required, such as by
setting `server.enabled` to true.
- `name` ((#v-global-name)) (`string: null`) - Set the prefix used for all resources in the Helm chart. If not set,
the prefix will be `<helm release name>-consul`.
- `domain` ((#v-global-domain)) (`string: consul`) - The domain Consul will answer DNS queries for
(see `-domain` (https://consul.io/docs/agent/options#_domain)) and the domain services synced from
Consul into Kubernetes will have, e.g. `service-name.service.consul`.
- `image` ((#v-global-image)) (`string: hashicorp/consul:<latest version>`) - The name (and tag) of the Consul Docker image for clients and servers.
This can be overridden per component. This should be pinned to a specific
version tag, otherwise you may inadvertently upgrade your Consul version.
Examples:
```yaml
# Consul 1.5.0
image: "consul:1.5.0"
# Consul Enterprise 1.5.0
image: "hashicorp/consul-enterprise:1.5.0-ent"
```
- `imagePullSecrets` ((#v-global-imagepullsecrets)) (`array<map>`) - Array of objects containing image pull secret names that will be applied to each service account.
This can be used to reference image pull secrets if using a custom consul or consul-k8s Docker image.
See https://kubernetes.io/docs/concepts/containers/images/#using-a-private-registry for reference.
Example:
```yaml
imagePullSecrets:
- name: pull-secret-name
- name: pull-secret-name-2
```
- `imageK8S` ((#v-global-imagek8s)) (`string: hashicorp/consul-k8s:<latest version>`) - The name (and tag) of the consul-k8s (https://github.com/hashicorp/consul-k8s)
Docker image that is used for functionality such the catalog sync.
This can be overridden per component.
- `datacenter` ((#v-global-datacenter)) (`string: dc1`) - The name of the datacenter that the agents should
register as. This can't be changed once the Consul cluster is up and running
since Consul doesn't support an automatic way to change this value currently:
https://github.com/hashicorp/consul/issues/1858.
- `enablePodSecurityPolicies` ((#v-global-enablepodsecuritypolicies)) (`boolean: false`) - Controls whether pod security policies are created for the Consul components
created by this chart. See https://kubernetes.io/docs/concepts/policy/pod-security-policy/.
- `gossipEncryption` ((#v-global-gossipencryption)) - Configures which Kubernetes secret to retrieve Consul's
gossip encryption key from (see `-encrypt` (https://consul.io/docs/agent/options#_encrypt)). If secretName or
secretKey are not set, gossip encryption will not be enabled. The secret must
be in the same namespace that Consul is installed into.
The secret can be created by running:
```shell
$ kubectl create secret generic consul-gossip-encryption-key --from-literal=key=$(consul keygen)
```
To reference, use:
```yaml
global:
gossipEncryption:
secretName: consul-gossip-encryption-key
secretKey: key
```
- `secretName` ((#v-global-gossipencryption-secretname)) (`string: ""`) - secretName is the name of the Kubernetes secret that holds the gossip
encryption key. The secret must be in the same namespace that Consul is installed into.
- `secretKey` ((#v-global-gossipencryption-secretkey)) (`string: ""`) - secretKey is the key within the Kubernetes secret that holds the gossip
encryption key.
- `tls` ((#v-global-tls)) - Enables TLS (https://learn.hashicorp.com/tutorials/consul/tls-encryption-secure)
across the cluster to verify authenticity of the Consul servers and clients.
Requires Consul v1.4.1+ and consul-k8s v0.16.2+
- `enabled` ((#v-global-tls-enabled)) (`boolean: false`) - If true, the Helm chart will enable TLS for Consul
servers and clients and all consul-k8s components, as well as generate certificate
authority (optional) and server and client certificates.
- `enableAutoEncrypt` ((#v-global-tls-enableautoencrypt)) (`boolean: false`) - If true, turns on the auto-encrypt feature on clients and servers.
It also switches consul-k8s components to retrieve the CA from the servers
via the API. Requires Consul 1.7.1+ and consul-k8s 0.13.0
- `serverAdditionalDNSSANs` ((#v-global-tls-serveradditionaldnssans)) (`array<string>: []`) - A list of additional DNS names to set as Subject Alternative Names (SANs)
in the server certificate. This is useful when you need to access the
Consul server(s) externally, for example, if you're using the UI.
- `serverAdditionalIPSANs` ((#v-global-tls-serveradditionalipsans)) (`array<string>: []`) - A list of additional IP addresses to set as Subject Alternative Names (SANs)
in the server certificate. This is useful when you need to access the
Consul server(s) externally, for example, if you're using the UI.
- `verify` ((#v-global-tls-verify)) (`boolean: true`) - If true, `verify_outgoing`, `verify_server_hostname`,
and `verify_incoming_rpc` will be set to `true` for Consul servers and clients.
Set this to false to incrementally roll out TLS on an existing Consul cluster.
Please see https://consul.io/docs/k8s/operations/tls-on-existing-cluster
for more details.
- `httpsOnly` ((#v-global-tls-httpsonly)) (`boolean: true`) - If true, the Helm chart will configure Consul to disable the HTTP port on
both clients and servers and to only accept HTTPS connections.
- `caCert` ((#v-global-tls-cacert)) - A Kubernetes secret containing the certificate of the CA to use for
TLS communication within the Consul cluster. If you have generated the CA yourself
with the consul CLI, you could use the following command to create the secret
in Kubernetes:
```bash
kubectl create secret generic consul-ca-cert \
--from-file='tls.crt=./consul-agent-ca.pem'
```
- `secretName` ((#v-global-tls-cacert-secretname)) (`string: null`) - The name of the Kubernetes secret.
- `secretKey` ((#v-global-tls-cacert-secretkey)) (`string: null`) - The key of the Kubernetes secret.
- `caKey` ((#v-global-tls-cakey)) - A Kubernetes secret containing the private key of the CA to use for
TLS communication within the Consul cluster. If you have generated the CA yourself
with the consul CLI, you could use the following command to create the secret
in Kubernetes:
```bash
kubectl create secret generic consul-ca-key \
--from-file='tls.key=./consul-agent-ca-key.pem'
```
Note that we need the CA key so that we can generate server and client certificates.
It is particularly important for the client certificates since they need to have host IPs
as Subject Alternative Names. In the future, we may support bringing your own server
certificates.
- `secretName` ((#v-global-tls-cakey-secretname)) (`string: null`) - The name of the Kubernetes secret.
- `secretKey` ((#v-global-tls-cakey-secretkey)) (`string: null`) - The key of the Kubernetes secret.
- `enableConsulNamespaces` ((#v-global-enableconsulnamespaces)) (`boolean: false`) - <EnterpriseAlert inline /> `enableConsulNamespaces` indicates that you are running
Consul Enterprise v1.7+ with a valid Consul Enterprise license and would
like to make use of configuration beyond registering everything into
the `default` Consul namespace. Requires consul-k8s v0.12+. Additional configuration
options are found in the `consulNamespaces` section of both the catalog sync
and connect injector.
- `acls` ((#v-global-acls)) - Configure ACLs.
- `manageSystemACLs` ((#v-global-acls-managesystemacls)) (`boolean: false`) - If true, the Helm chart will automatically manage ACL tokens and policies
for all Consul and consul-k8s components.
This requires Consul >= 1.4 and consul-k8s >= 0.14.0.
- `bootstrapToken` ((#v-global-acls-bootstraptoken)) - A Kubernetes secret containing the bootstrap token to use for
creating policies and tokens for all Consul and consul-k8s components.
If set, we will skip ACL bootstrapping of the servers and will only
initialize ACLs for the Consul clients and consul-k8s system components.
Requires consul-k8s >= 0.14.0.
- `secretName` ((#v-global-acls-bootstraptoken-secretname)) (`string: null`) - The name of the Kubernetes secret.
- `secretKey` ((#v-global-acls-bootstraptoken-secretkey)) (`string: null`) - The key of the Kubernetes secret.
- `createReplicationToken` ((#v-global-acls-createreplicationtoken)) (`boolean: false`) - If true, an ACL token will be created that can be used in secondary
datacenters for replication. This should only be set to true in the
primary datacenter since the replication token must be created from that
datacenter.
In secondary datacenters, the secret needs to be imported from the primary
datacenter and referenced via `global.acls.replicationToken`.
Requires consul-k8s >= 0.13.0.
- `replicationToken` ((#v-global-acls-replicationtoken)) - replicationToken references a secret containing the replication ACL token.
This token will be used by secondary datacenters to perform ACL replication
and create ACL tokens and policies.
This value is ignored if `bootstrapToken` is also set.
Requires consul-k8s >= 0.13.0.
- `secretName` ((#v-global-acls-replicationtoken-secretname)) (`string: null`) - The name of the Kubernetes secret.
- `secretKey` ((#v-global-acls-replicationtoken-secretkey)) (`string: null`) - The key of the Kubernetes secret.
- `federation` ((#v-global-federation)) - Configure federation.
- `enabled` ((#v-global-federation-enabled)) (`boolean: false`) - If enabled, this datacenter will be federation-capable. Only federation
via mesh gateways is supported.
Mesh gateways and servers will be configured to allow federation.
Requires `global.tls.enabled`, `meshGateway.enabled` and `connectInject.enabled`
to be true. Requires Consul 1.8+.
- `createFederationSecret` ((#v-global-federation-createfederationsecret)) (`boolean: false`) - If true, the chart will create a Kubernetes secret that can be imported
into secondary datacenters so they can federate with this datacenter. The
secret contains all the information secondary datacenters need to contact
and authenticate with this datacenter. This should only be set to true
in your primary datacenter. The secret name is
`<global.name>-federation` (if setting `global.name`), otherwise
`<helm-release-name>-consul-federation`. Requires consul-k8s 0.15.0+.
- `lifecycleSidecarContainer` ((#v-global-lifecyclesidecarcontainer)) (`map`) - The lifecycle sidecar ensures the Consul services
are always registered with their local Consul clients and is used by the
ingress/terminating/mesh gateways as well as with every Connect-injected service.
- `imageEnvoy` ((#v-global-imageenvoy)) (`string: envoyproxy/envoy-alpine:<latest supported version>`) - The name (and tag) of the Envoy Docker image used for the
connect-injected sidecar proxies and mesh, terminating, and ingress gateways.
See https://www.consul.io/docs/connect/proxies/envoy for full compatibility matrix between Consul and Envoy.
- `openshift` ((#v-global-openshift)) - Configuration for running this Helm chart on the Red Hat OpenShift platform.
This Helm chart currently supports OpenShift v4.x+.
- `enabled` ((#v-global-openshift-enabled)) (`boolean: false`) - If true, the Helm chart will create necessary configuration for running
its components on OpenShift.
- `server` ((#v-server)) - Server, when enabled, configures a server cluster to run. This should
be disabled if you plan on connecting to a Consul cluster external to
the Kube cluster.
- `enabled` ((#v-server-enabled)) (`boolean: global.enabled`) - If true, the chart will install all the resources necessary for a
Consul server cluster. If you're running Consul externally and want agents
within Kubernetes to join that cluster, this should probably be false.
- `image` ((#v-server-image)) (`string: null`) - The name of the Docker image (including any tag) for the containers running
Consul server agents.
- `replicas` ((#v-server-replicas)) (`integer: 3`) - The number of server agents to run. This determines the fault tolerance of
the cluster. Please see the deployment table (https://consul.io/docs/internals/consensus#deployment-table)
for more information.
- `bootstrapExpect` ((#v-server-bootstrapexpect)) (`int: null`) - The number of servers that are expected to be running.
It defaults to server.replicas.
In most cases the default should be used, however if there are more
servers in this datacenter than server.replicas it might make sense
to override the default. This would be the case if two kube clusters
were joined into the same datacenter and each cluster ran a certain number
of servers.
- `enterpriseLicense` ((#v-server-enterpriselicense)) - <EnterpriseAlert inline /> This value refers to a Kubernetes secret that you have created
that contains your enterprise license. It is required if you are using an
enterprise binary. Defining it here applies it to your cluster once a leader
has been elected. If you are not using an enterprise image or if you plan to
introduce the license key via another route, then set these fields to null.
Note: the job to apply license runs on both Helm installs and upgrades.
- `secretName` ((#v-server-enterpriselicense-secretname)) (`string: null`) - The name of the Kubernetes secret that holds the enterprise license.
The secret must be in the same namespace that Consul is installed into.
- `secretKey` ((#v-server-enterpriselicense-secretkey)) (`string: null`) - The key within the Kubernetes secret that holds the enterprise license.
- `exposeGossipAndRPCPorts` ((#v-server-exposegossipandrpcports)) (`boolean: false`) - Exposes the servers' gossip and RPC ports as hostPorts. To enable a client
agent outside of the k8s cluster to join the datacenter, you would need to
enable `server.exposeGossipAndRPCPorts`, `client.exposeGossipPorts`, and
set `server.ports.serflan.port` to a port not being used on the host. Since
`client.exposeGossipPorts` uses the hostPort 8301,
`server.ports.serflan.port` must be set to something other than 8301.
- `ports` ((#v-server-ports)) - Configures ports for the consul servers.
- `serflan` ((#v-server-ports-serflan)) - Configures the LAN gossip port for the consul servers. If you choose to
enable `server.exposeGossipAndRPCPorts` and `client.exposeGossipPorts`,
that will configure the LAN gossip ports on the servers and clients to be
hostPorts, so if you are running clients and servers on the same node the
ports will conflict if they are both 8301. When you enable
`server.exposeGossipAndRPCPorts` and `client.exposeGossipPorts`, you must
change this from the default to an unused port on the host, e.g. 9301. By
default the LAN gossip port is 8301 and configured as a containerPort on
the consul server Pods.
- `port` ((#v-server-ports-serflan-port)) (`integer: 8301`)
- `storage` ((#v-server-storage)) (`string: 10Gi`) - This defines the disk size for configuring the
servers' StatefulSet storage. For dynamically provisioned storage classes, this is the
desired size. For manually defined persistent volumes, this should be set to
the disk size of the attached volume.
- `storageClass` ((#v-server-storageclass)) (`string: null`) - The StorageClass to use for the servers' StatefulSet storage. It must be
able to be dynamically provisioned if you want the storage
to be automatically created. For example, to use local
(https://kubernetes.io/docs/concepts/storage/storage-classes/#local)
storage classes, the PersistentVolumeClaims would need to be manually created.
A `null` value will use the Kubernetes cluster's default StorageClass. If a default
StorageClass does not exist, you will need to create one.
- `connect` ((#v-server-connect)) (`boolean: true`) - This will enable/disable Connect (https://consul.io/docs/connect). Setting this to true
_will not_ automatically secure pod communication, this
setting will only enable usage of the feature. Consul will automatically initialize
a new CA and set of certificates. Additional Connect settings can be configured
by setting the `server.extraConfig` value.
- `resources` ((#v-server-resources)) (`map`) - The resource requests (CPU, memory, etc.)
for each of the server agents. This should be a YAML map corresponding to a Kubernetes
ResourceRequirements (https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.11/#resourcerequirements-v1-core)
object. NOTE: The use of a YAML string is deprecated.
Example:
```yaml
resources:
requests:
memory: '100Mi'
cpu: '100m'
limits:
memory: '100Mi'
cpu: '100m'
```
- `securityContext` ((#v-server-securitycontext)) (`map`) - The security context for the server pods. This should be a YAML map corresponding to a
Kubernetes [SecurityContext](https://kubernetes.io/docs/tasks/configure-pod-container/security-context/) object.
By default, servers will run as non-root, with user ID `100` and group ID `1000`,
which correspond to the consul user and group created by the Consul docker image.
Note: if running on OpenShift, this setting is ignored because the user and group are set automatically
by the OpenShift platform.
- `updatePartition` ((#v-server-updatepartition)) (`integer: 0`) - This value is used to carefully
control a rolling update of Consul server agents. This value specifies the
partition (https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/#partitions)
for performing a rolling update. Please read the linked Kubernetes documentation
and https://www.consul.io/docs/k8s/upgrade#upgrading-consul-servers for more information.
- `disruptionBudget` ((#v-server-disruptionbudget)) - This configures the PodDisruptionBudget (https://kubernetes.io/docs/tasks/run-application/configure-pdb/)
for the server cluster.
- `enabled` ((#v-server-disruptionbudget-enabled)) (`boolean: true`) - This will enable/disable registering a PodDisruptionBudget for the server
cluster. If this is enabled, it will only register the budget so long as
the server cluster is enabled.
- `maxUnavailable` ((#v-server-disruptionbudget-maxunavailable)) (`integer: null`) - The maximum number of unavailable pods. By default, this will be
automatically computed based on the `server.replicas` value to be `(n/2)-1`.
If you need to set this to `0`, you will need to add a
--set 'server.disruptionBudget.maxUnavailable=0'` flag to the helm chart installation
command because of a limitation in the Helm templating language.
- `extraConfig` ((#v-server-extraconfig)) (`string: {}`) - A raw string of extra JSON configuration (https://consul.io/docs/agent/options) for Consul
servers. This will be saved as-is into a ConfigMap that is read by the Consul
server agents. This can be used to add additional configuration that
isn't directly exposed by the chart.
Example:
```yaml
extraConfig: |
{
"log_level": "DEBUG"
}
```
This can also be set using Helm's `--set` flag using the following syntax:
```shell
--set 'server.extraConfig="{"log_level": "DEBUG"}"'
```
- `extraVolumes` ((#v-server-extravolumes)) (`array<map>`) - A list of extra volumes to mount for server agents. This
is useful for bringing in extra data that can be referenced by other configurations
at a well known path, such as TLS certificates or Gossip encryption keys. The
value of this should be a list of objects.
Example:
```yaml
extraVolumes:
- type: secret
name: consul-certs
load: false
```
Each object supports the following keys:
- `type` - Type of the volume, must be one of "configMap" or "secret". Case sensitive.
- `name` - Name of the configMap or secret to be mounted. This also controls
the path that it is mounted to. The volume will be mounted to `/consul/userconfig/<name>`.
- `load` - If true, then the agent will be
configured to automatically load HCL/JSON configuration files from this volume
with `-config-dir`. This defaults to false.
- `affinity` ((#v-server-affinity)) (`string`) - This value defines the affinity (https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity)
for server pods. It defaults to allowing only a single server pod on each node, which
minimizes risk of the cluster becoming unusable if a node is lost. If you need
to run more pods per node (for example, testing on Minikube), set this value
to `null`.
Example:
```yaml
affinity: |
podAntiAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
- labelSelector:
matchLabels:
app: {{ template "consul.name" . }}
release: "{{ .Release.Name }}"
component: server
topologyKey: kubernetes.io/hostname
```
- `tolerations` ((#v-server-tolerations)) (`string: ""`) - Toleration settings for server pods. This
should be a multi-line string matching the Tolerations
(https://kubernetes.io/docs/concepts/configuration/taint-and-toleration/) array in a Pod spec.
- `nodeSelector` ((#v-server-nodeselector)) (`string: null`) - This value defines `nodeSelector` (https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#nodeselector)
labels for server pod assignment, formatted as a multi-line string.
Example:
```yaml
nodeSelector: |
beta.kubernetes.io/arch: amd64
```
- `priorityClassName` ((#v-server-priorityclassname)) (`string: ""`) - This value references an existing
Kubernetes `priorityClassName` (https://kubernetes.io/docs/concepts/configuration/pod-priority-preemption/#pod-priority)
that can be assigned to server pods.
- `extraLabels` ((#v-server-extralabels)) (`map`) - Extra labels to attach to the server pods. This should be a YAML map.
Example:
```yaml
extraLabels:
labelKey: label-value
anotherLabelKey: another-label-value
```
- `annotations` ((#v-server-annotations)) (`string: null`) - This value defines additional annotations for
server pods. This should be formatted as a multi-line string.
```yaml
annotations: |
"sample/annotation1": "foo"
"sample/annotation2": "bar"
```
- `service` ((#v-server-service)) - Server service properties.
- `annotations` ((#v-server-service-annotations)) (`string: null`) - Annotations to apply to the server service.
```yaml
annotations: |
"annotation-key": "annotation-value"
```
- `extraEnvironmentVars` ((#v-server-extraenvironmentvars)) (`map`) - A list of extra environment variables to set within the stateful set.
These could be used to include proxy settings required for cloud auto-join
feature, in case kubernetes cluster is behind egress http proxies. Additionally,
it could be used to configure custom consul parameters.
- `externalServers` ((#v-externalservers)) - Configuration for Consul servers when the servers are running outside of Kubernetes.
When running external servers, configuring these values is recommended
if setting `global.tls.enableAutoEncrypt` to true (requires consul-k8s >= 0.13.0)
or `global.acls.manageSystemACLs` to true (requires consul-k8s >= 0.14.0).
- `enabled` ((#v-externalservers-enabled)) (`boolean: false`) - If true, the Helm chart will be configured to talk to the external servers.
If setting this to true, you must also set `server.enabled` to false.
- `hosts` ((#v-externalservers-hosts)) (`array<string>: []`) - An array of external Consul server hosts that are used to make
HTTPS connections from the components in this Helm chart.
Valid values include IPs, DNS names, or Cloud auto-join string.
The port must be provided separately below.
Note: `client.join` must also be set to the hosts that should be
used to join the cluster. In most cases, the `client.join` values
should be the same, however, they may be different if you
wish to use separate hosts for the HTTPS connections.
- `httpsPort` ((#v-externalservers-httpsport)) (`integer: 8501`) - The HTTPS port of the Consul servers.
- `tlsServerName` ((#v-externalservers-tlsservername)) (`string: null`) - The server name to use as the SNI host header when connecting with HTTPS.
- `useSystemRoots` ((#v-externalservers-usesystemroots)) (`boolean: false`) - If true, consul-k8s components will ignore the CA set in
`global.tls.caCert` when making HTTPS calls to Consul servers and
will instead use the consul-k8s image's system CAs for TLS verification.
If false, consul-k8s components will use `global.tls.caCert` when
making HTTPS calls to Consul servers.
**NOTE:** This does not affect Consul's internal RPC communication which will
always use `global.tls.caCert`.
- `k8sAuthMethodHost` ((#v-externalservers-k8sauthmethodhost)) (`string: null`) - If you are setting `global.acls.manageSystemACLs` and
`connectInject.enabled` to true, set `k8sAuthMethodHost` to the address of the Kubernetes API server.
This address must be reachable from the Consul servers.
Please see the Kubernetes Auth Method documentation (https://consul.io/docs/acl/auth-methods/kubernetes).
Requires consul-k8s >= 0.14.0.
You could retrieve this value from your `kubeconfig` by running:
```shell
kubectl config view \
-o jsonpath="{.clusters[?(@.name=='<your cluster name>')].cluster.server}"
```
- `client` ((#v-client)) - Values that configure running a Consul client on Kubernetes nodes.
- `enabled` ((#v-client-enabled)) (`boolean: global.enabled`) - If true, the chart will install all
the resources necessary for a Consul client on every Kubernetes node. This _does not_ require
`server.enabled`, since the agents can be configured to join an external cluster.
- `image` ((#v-client-image)) (`string: null`) - The name of the Docker image (including any tag) for the containers
running Consul client agents.
- `join` ((#v-client-join)) (`array<string>: null`) - A list of valid `-retry-join` values (https://consul.io/docs/agent/options#retry-join).
If this is `null` (default), then the clients will attempt to automatically
join the server cluster running within Kubernetes.
This means that with `server.enabled` set to true, clients will automatically
join that cluster. If `server.enabled` is not true, then a value must be
specified so the clients can join a valid cluster.
- `dataDirectoryHostPath` ((#v-client-datadirectoryhostpath)) (`string: null`) - An absolute path to a directory on the host machine to use as the Consul
client data directory. If set to the empty string or null, the Consul agent
will store its data in the Pod's local filesystem (which will
be lost if the Pod is deleted). Security Warning: If setting this, Pod Security
Policies _must_ be enabled on your cluster and in this Helm chart (via the
`global.enablePodSecurityPolicies` setting) to prevent other pods from
mounting the same host path and gaining access to all of Consul's data.
Consul's data is not encrypted at rest.
- `grpc` ((#v-client-grpc)) (`boolean: true`) - If true, agents will enable their GRPC listener on
port 8502 and expose it to the host. This will use slightly more resources, but is
required for Connect.
- `exposeGossipPorts` ((#v-client-exposegossipports)) (`boolean: false`) - If true, the Helm chart will expose the clients' gossip ports as hostPorts.
This is only necessary if pod IPs in the k8s cluster are not directly routable
and the Consul servers are outside of the k8s cluster.
This also changes the clients' advertised IP to the `hostIP` rather than `podIP`.
- `resources` ((#v-client-resources)) (`map`) - Resource settings for Client agents.
NOTE: The use of a YAML string is deprecated. Instead, set directly as a
YAML map.
- `securityContext` ((#v-client-securitycontext)) (`map`) - The security context for the client pods. This should be a YAML map corresponding to a
Kubernetes [SecurityContext](https://kubernetes.io/docs/tasks/configure-pod-container/security-context/) object.
By default, servers will run as non-root, with user ID `100` and group ID `1000`,
which correspond to the consul user and group created by the Consul docker image.
Note: if running on OpenShift, this setting is ignored because the user and group are set automatically
by the OpenShift platform.
- `extraConfig` ((#v-client-extraconfig)) (`string: {}`) - A raw string of extra JSON configuration (https://consul.io/docs/agent/options) for Consul
clients. This will be saved as-is into a ConfigMap that is read by the Consul
client agents. This can be used to add additional configuration that
isn't directly exposed by the chart.
Example:
```yaml
extraConfig: |
{
"log_level": "DEBUG"
}
```
This can also be set using Helm's `--set` flag using the following syntax:
```shell
--set 'client.extraConfig="{"log_level": "DEBUG"}"'
```
- `extraVolumes` ((#v-client-extravolumes)) (`array<map>`) - A list of extra volumes to mount for client agents. This
is useful for bringing in extra data that can be referenced by other configurations
at a well known path, such as TLS certificates or Gossip encryption keys. The
value of this should be a list of objects.
Example:
```yaml
extraVolumes:
- type: secret
name: consul-certs
load: false
```
Each object supports the following keys:
- `type` - Type of the volume, must be one of "configMap" or "secret". Case sensitive.
- `name` - Name of the configMap or secret to be mounted. This also controls
the path that it is mounted to. The volume will be mounted to `/consul/userconfig/<name>`.
- `load` - If true, then the agent will be
configured to automatically load HCL/JSON configuration files from this volume
with `-config-dir`. This defaults to false.
- `tolerations` ((#v-client-tolerations)) (`string: ""`) - Toleration Settings for Client pods
This should be a multi-line string matching the Toleration array
in a PodSpec.
The example below will allow Client pods to run on every node
regardless of taints
```yaml
tolerations: |
- operator: Exists
```
- `nodeSelector` ((#v-client-nodeselector)) (`string: null`) - nodeSelector labels for client pod assignment, formatted as a multi-line string.
ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#nodeselector
Example:
```yaml
nodeSelector: |
beta.kubernetes.io/arch: amd64
```
- `affinity` ((#v-client-affinity)) (`string: ""`) - Affinity Settings for Client pods, formatted as a multi-line YAML string.
ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
Example:
```yaml
affinity: |
nodeAffinity:
requiredDuringSchedulingIgnoredDuringExecution:
nodeSelectorTerms:
- matchExpressions:
- key: node-role.kubernetes.io/master
operator: DoesNotExist
```
- `priorityClassName` ((#v-client-priorityclassname)) (`string: ""`) - This value references an existing
Kubernetes `priorityClassName` (https://kubernetes.io/docs/concepts/configuration/pod-priority-preemption/#pod-priority)
that can be assigned to client pods.
- `annotations` ((#v-client-annotations)) (`string: null`) - This value defines additional annotations for
client pods. This should be formatted as a multi-line string.
```yaml
annotations: |
"sample/annotation1": "foo"
"sample/annotation2": "bar"
```
- `extraEnvironmentVars` ((#v-client-extraenvironmentvars)) (`map`) - A list of extra environment variables to set within the stateful set.
These could be used to include proxy settings required for cloud auto-join
feature, in case kubernetes cluster is behind egress http proxies. Additionally,
it could be used to configure custom consul parameters.
- `dnsPolicy` ((#v-client-dnspolicy)) (`string: null`) - This value defines the Pod DNS policy (https://kubernetes.io/docs/concepts/services-networking/dns-pod-service/#pod-s-dns-policy)
for client pods to use.
- `hostNetwork` ((#v-client-hostnetwork)) (`boolean: false`) - hostNetwork defines whether or not we use host networking instead of hostPort in the event
that a CNI plugin doesn't support `hostPort`. This has security implications and is not recommended
as doing so gives the consul client unnecessary access to all network traffic on the host.
In most cases, pod network and host network are on different networks so this should be
combined with `dnsPolicy: ClusterFirstWithHostNet`
- `updateStrategy` ((#v-client-updatestrategy)) (`string: null`) - updateStrategy for the DaemonSet.
See https://kubernetes.io/docs/tasks/manage-daemon/update-daemon-set/#daemonset-update-strategy.
This should be a multi-line string mapping directly to the updateStrategy
Example:
```yaml
updateStrategy: |
rollingUpdate:
maxUnavailable: 5
type: RollingUpdate
```
- `snapshotAgent` ((#v-client-snapshotagent)) - <EnterpriseAlert inline /> Values for setting up and running snapshot agents
(https://consul.io/commands/snapshot/agent)
within the Consul clusters. They are required to be co-located with Consul clients,
so will inherit the clients' nodeSelector, tolerations and affinity.
- `enabled` ((#v-client-snapshotagent-enabled)) (`boolean: false`) - If true, the chart will install resources necessary to run the snapshot agent.
- `replicas` ((#v-client-snapshotagent-replicas)) (`integer: 2`) - The number of snapshot agents to run.
- `configSecret` ((#v-client-snapshotagent-configsecret)) - A Kubernetes secret that should be manually created to contain the entire
config to be used on the snapshot agent.
This is the preferred method of configuration since there are usually storage
credentials present. Please see Snapshot agent config (https://consul.io/commands/snapshot/agent#config-file-options)
for details.
- `secretName` ((#v-client-snapshotagent-configsecret-secretname)) (`string: null`) - The name of the Kubernetes secret.
- `secretKey` ((#v-client-snapshotagent-configsecret-secretkey)) (`string: null`) - The key of the Kubernetes secret.
- `resources` ((#v-client-snapshotagent-resources)) (`map`) - Resource settings for snapshot agent pods.
- `caCert` ((#v-client-snapshotagent-cacert)) (`string: null`) - Optional PEM-encoded CA certificate that will be added to the trusted system CAs.
Useful if using an S3-compatible storage exposing a self-signed certificate.
Example:
```yaml
caCert: |
-----BEGIN CERTIFICATE-----
MIIC7jCCApSgAwIBAgIRAIq2zQEVexqxvtxP6J0bXAwwCgYIKoZIzj0EAwIwgbkx
...
```
- `dns` ((#v-dns)) - Configuration for DNS configuration within the Kubernetes cluster.
This creates a service that routes to all agents (client or server)
for serving DNS requests. This DOES NOT automatically configure kube-dns
today, so you must still manually configure a `stubDomain` with kube-dns
for this to have any effect:
https://kubernetes.io/docs/tasks/administer-cluster/dns-custom-nameservers/#configure-stub-domain-and-upstream-dns-servers
- `enabled` ((#v-dns-enabled)) (`boolean: -`)
- `type` ((#v-dns-type)) (`string: ClusterIP`) - Used to control the type of service created. For
example, setting this to "LoadBalancer" will create an external load
balancer (for supported K8S installations)
- `clusterIP` ((#v-dns-clusterip)) (`string: null`) - Set a predefined cluster IP for the DNS service.
Useful if you need to reference the DNS service's IP
address in CoreDNS config.
- `annotations` ((#v-dns-annotations)) (`string: null`) - Extra annotations to attach to the dns service
This should be a multi-line string of
annotations to apply to the dns Service
- `additionalSpec` ((#v-dns-additionalspec)) (`string: null`) - Additional ServiceSpec values
This should be a multi-line string mapping directly to a Kubernetes
ServiceSpec object.
- `ui` ((#v-ui)) - Values that configure the Consul UI.
- `enabled` ((#v-ui-enabled)) (`boolean: global.enabled`) - If true, the UI will be enabled. This will
only _enable_ the UI, it doesn't automatically register any service for external
access. The UI will only be enabled on server agents. If `server.enabled` is
false, then this setting has no effect. To expose the UI in some way, you must
configure `ui.service`.
- `service` ((#v-ui-service)) - Configure the service for the Consul UI.
- `enabled` ((#v-ui-service-enabled)) (`boolean: true`) - This will enable/disable registering a
Kubernetes Service for the Consul UI. This value only takes effect if `ui.enabled` is
true and taking effect.
- `type` ((#v-ui-service-type)) (`string: null`) - The service type to register.
- `annotations` ((#v-ui-service-annotations)) (`string: null`) - Annotations to apply to the UI service.
Example:
```yaml
annotations: |
'annotation-key': annotation-value
```
- `additionalSpec` ((#v-ui-service-additionalspec)) (`string: null`) - Additional ServiceSpec values
This should be a multi-line string mapping directly to a Kubernetes
ServiceSpec object.
- `syncCatalog` ((#v-synccatalog)) - Configure the catalog sync process to sync K8S with Consul
services. This can run bidirectional (default) or unidirectionally (Consul
to K8S or K8S to Consul only).
This process assumes that a Consul agent is available on the host IP.
This is done automatically if clients are enabled. If clients are not
enabled then set the node selection so that it chooses a node with a
Consul agent.
- `enabled` ((#v-synccatalog-enabled)) (`boolean: false`) - True if you want to enable the catalog sync. Set to "-" to inherit from
global.enabled.
- `image` ((#v-synccatalog-image)) (`string: null`) - The name of the Docker image (including any tag) for consul-k8s
to run the sync program.
- `default` ((#v-synccatalog-default)) (`boolean: true`) - If true, all valid services in K8S are
synced by default. If false, the service must be annotated
(https://consul.io/docs/k8s/service-sync#sync-enable-disable) properly to sync.
In either case an annotation can override the default.
- `priorityClassName` ((#v-synccatalog-priorityclassname)) (`string: ""`) - Optional priorityClassName.
- `toConsul` ((#v-synccatalog-toconsul)) (`boolean: true`) - If true, will sync Kubernetes services to Consul. This can be disabled to
have a one-way sync.
- `toK8S` ((#v-synccatalog-tok8s)) (`boolean: true`) - If true, will sync Consul services to Kubernetes. This can be disabled to
have a one-way sync.
- `k8sPrefix` ((#v-synccatalog-k8sprefix)) (`string: null`) - Service prefix to prepend to services before registering
with Kubernetes. For example "consul-" will register all services
prepended with "consul-". (Consul -> Kubernetes sync)
- `k8sAllowNamespaces` ((#v-synccatalog-k8sallownamespaces)) (`array<string>: ["*"]`) - List of k8s namespaces to sync the k8s services from.
If a k8s namespace is not included in this list or is listed in `k8sDenyNamespaces`,
services in that k8s namespace will not be synced even if they are explicitly
annotated. Use `["*"]` to automatically allow all k8s namespaces.
For example, `["namespace1", "namespace2"]` will only allow services in the k8s
namespaces `namespace1` and `namespace2` to be synced and registered
with Consul. All other k8s namespaces will be ignored.
To deny all namespaces, set this to `[]`.
Note: `k8sDenyNamespaces` takes precedence over values defined here.
Requires consul-k8s v0.12+
- `k8sDenyNamespaces` ((#v-synccatalog-k8sdenynamespaces)) (`array<string>: ["kube-system", "kube-public"]`) - List of k8s namespaces that should not have their
services synced. This list takes precedence over `k8sAllowNamespaces`.
`*` is not supported because then nothing would be allowed to sync.
Requires consul-k8s v0.12+.
For example, if `k8sAllowNamespaces` is `["*"]` and `k8sDenyNamespaces` is
`["namespace1", "namespace2"]`, then all k8s namespaces besides `namespace1`
and `namespace2` will be synced.
- `k8sSourceNamespace` ((#v-synccatalog-k8ssourcenamespace)) (`string: null`) - [DEPRECATED] Use k8sAllowNamespaces and k8sDenyNamespaces instead. For
backwards compatibility, if both this and the allow/deny lists are set,
the allow/deny lists will be ignored.
k8sSourceNamespace is the Kubernetes namespace to watch for service
changes and sync to Consul. If this is not set then it will default
to all namespaces.
- `consulNamespaces` ((#v-synccatalog-consulnamespaces)) - <EnterpriseAlert inline /> These settings manage the catalog sync's interaction with
Consul namespaces (requires consul-ent v1.7+ and consul-k8s v0.12+).
Also, `global.enableConsulNamespaces` must be true.
- `consulDestinationNamespace` ((#v-synccatalog-consulnamespaces-consuldestinationnamespace)) (`string: default`) - Name of the Consul namespace to register all
k8s services into. If the Consul namespace does not already exist,
it will be created. This will be ignored if `mirroringK8S` is true.
- `mirroringK8S` ((#v-synccatalog-consulnamespaces-mirroringk8s)) (`boolean: false`) - If true, k8s services will be registered into a Consul namespace
of the same name as their k8s namespace, optionally prefixed if
`mirroringK8SPrefix` is set below. If the Consul namespace does not
already exist, it will be created. Turning this on overrides the
`consulDestinationNamespace` setting.
`addK8SNamespaceSuffix` may no longer be needed if enabling this option.
- `mirroringK8SPrefix` ((#v-synccatalog-consulnamespaces-mirroringk8sprefix)) (`string: ""`) - If `mirroringK8S` is set to true, `mirroringK8SPrefix` allows each Consul namespace
to be given a prefix. For example, if `mirroringK8SPrefix` is set to "k8s-", a
service in the k8s `staging` namespace will be registered into the
`k8s-staging` Consul namespace.
- `addK8SNamespaceSuffix` ((#v-synccatalog-addk8snamespacesuffix)) (`boolean: true`) - Appends Kubernetes namespace suffix to
each service name synced to Consul, separated by a dash.
For example, for a service 'foo' in the default namespace,
the sync process will create a Consul service named 'foo-default'.
Set this flag to true to avoid registering services with the same name
but in different namespaces as instances for the same Consul service.
Namespace suffix is not added if 'annotationServiceName' is provided.
- `consulPrefix` ((#v-synccatalog-consulprefix)) (`string: null`) - Service prefix which prepends itself
to Kubernetes services registered within Consul
For example, "k8s-" will register all services prepended with "k8s-".
(Kubernetes -> Consul sync)
consulPrefix is ignored when 'annotationServiceName' is provided.
NOTE: Updating this property to a non-null value for an existing installation will result in deregistering
of existing services in Consul and registering them with a new name.
- `k8sTag` ((#v-synccatalog-k8stag)) (`string: null`) - Optional tag that is applied to all of the Kubernetes services
that are synced into Consul. If nothing is set, defaults to "k8s".
(Kubernetes -> Consul sync)
- `consulNodeName` ((#v-synccatalog-consulnodename)) (`string: k8s-sync`) - Defines the Consul synthetic node that all services
will be registered to.
NOTE: Changing the node name and upgrading the Helm chart will leave
all of the previously sync'd services registered with Consul and
register them again under the new Consul node name. The out-of-date
registrations will need to be explicitly removed.
- `syncClusterIPServices` ((#v-synccatalog-syncclusteripservices)) (`boolean: true`) - Syncs services of the ClusterIP type, which may
or may not be broadly accessible depending on your Kubernetes cluster.
Set this to false to skip syncing ClusterIP services.
- `nodePortSyncType` ((#v-synccatalog-nodeportsynctype)) (`string: ExternalFirst`) - Configures the type of syncing that happens for NodePort
services. The valid options are: ExternalOnly, InternalOnly, ExternalFirst.
- ExternalOnly will only use a node's ExternalIP address for the sync
- InternalOnly use's the node's InternalIP address
- ExternalFirst will preferentially use the node's ExternalIP address, but
if it doesn't exist, it will use the node's InternalIP address instead.
- `aclSyncToken` ((#v-synccatalog-aclsynctoken)) - Refers to a Kubernetes secret that you have created that contains
an ACL token for your Consul cluster which allows the sync process the correct
permissions. This is only needed if ACLs are enabled on the Consul cluster.
- `secretName` ((#v-synccatalog-aclsynctoken-secretname)) (`string: null`) - The name of the Kubernetes secret.
- `secretKey` ((#v-synccatalog-aclsynctoken-secretkey)) (`string: null`) - The key of the Kubernetes secret.
- `nodeSelector` ((#v-synccatalog-nodeselector)) (`string: null`) - This value defines `nodeSelector` (https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#nodeselector)
labels for catalog sync pod assignment, formatted as a multi-line string.
Example:
```yaml
nodeSelector: |
beta.kubernetes.io/arch: amd64
```
- `affinity` ((#v-synccatalog-affinity)) (`string: null`) - Affinity Settings
This should be a multi-line string matching the affinity object
- `tolerations` ((#v-synccatalog-tolerations)) (`string: null`) - Toleration Settings
This should be a multi-line string matching the Toleration array
in a PodSpec.
- `resources` ((#v-synccatalog-resources)) (`map`) - Resource settings for sync catalog pods.
- `logLevel` ((#v-synccatalog-loglevel)) (`string: info`) - Log verbosity level. One of "trace", "debug", "info", "warn", or "error".
- `consulWriteInterval` ((#v-synccatalog-consulwriteinterval)) (`string: null`) - Override the default interval to perform syncing operations creating Consul services.
- `connectInject` ((#v-connectinject)) - Configures the automatic Connect sidecar injector.
- `enabled` ((#v-connectinject-enabled)) (`boolean: false`) - True if you want to enable connect injection. Set to "-" to inherit from
global.enabled.
- `image` ((#v-connectinject-image)) (`string: null`) - Image for consul-k8s that contains the injector
- `default` ((#v-connectinject-default)) (`boolean: false`) - If true, the injector will inject the
Connect sidecar into all pods by default. Otherwise, pods must specify the
injection annotation (https://consul.io/docs/k8s/connect#consul-hashicorp-com-connect-inject)
to opt-in to Connect injection. If this is true, pods can use the same annotation
to explicitly opt-out of injection.
- `healthChecks` ((#v-connectinject-healthchecks)) - Enables synchronization of Kubernetes health probe status with Consul.
NOTE: It is highly recommended to enable TLS with this feature because it requires
making calls to Consul clients across the cluster. Without TLS enabled, these calls
could leak ACL tokens should the cluster network become compromised.
- `enabled` ((#v-connectinject-healthchecks-enabled)) (`boolean: true`) - Enables the Consul Health Check controller which syncs the readiness status of
connect-injected pods with Consul.
- `reconcilePeriod` ((#v-connectinject-healthchecks-reconcileperiod)) (`string: 1m`) - If `healthChecks.enabled` is set to `true`, `reconcilePeriod` defines how often a full state
reconcile is done after the initial reconcile at startup is completed.
- `envoyExtraArgs` ((#v-connectinject-envoyextraargs)) (`string: null`) - Used to pass arguments to the injected envoy sidecar.
Valid arguments to pass to envoy can be found here: https://www.envoyproxy.io/docs/envoy/latest/operations/cli
e.g "--log-level debug --disable-hot-restart"
- `priorityClassName` ((#v-connectinject-priorityclassname)) (`string: ""`) - Optional priorityClassName.
- `imageConsul` ((#v-connectinject-imageconsul)) (`string: null`) - The Docker image for Consul to use when performing Connect injection.
Defaults to global.image.
- `logLevel` ((#v-connectinject-loglevel)) (`string: info`) - Log verbosity level. One of "debug", "info", "warn", or "error".
- `resources` ((#v-connectinject-resources)) (`map`) - Resource settings for connect inject pods.
- `namespaceSelector` ((#v-connectinject-namespaceselector)) (`string: null`) - Selector for restricting the webhook to only
specific namespaces. This should be set to a multiline string.
See https://kubernetes.io/docs/reference/access-authn-authz/extensible-admission-controllers/#matching-requests-namespaceselector
for more details.
Example:
```yaml
namespaceSelector: |
matchLabels:
namespace-label: label-value
```
- `k8sAllowNamespaces` ((#v-connectinject-k8sallownamespaces)) (`array<string>: ["*"]`) - List of k8s namespaces to allow Connect sidecar
injection in. If a k8s namespace is not included or is listed in `k8sDenyNamespaces`,
pods in that k8s namespace will not be injected even if they are explicitly
annotated. Use `["*"]` to automatically allow all k8s namespaces.
For example, `["namespace1", "namespace2"]` will only allow pods in the k8s
namespaces `namespace1` and `namespace2` to have Connect sidecars injected
and registered with Consul. All other k8s namespaces will be ignored.
To deny all namespaces, set this to `[]`.
Note: `k8sDenyNamespaces` takes precedence over values defined here and
`namespaceSelector` takes precedence over both since it is applied first.
`kube-system` and `kube-public` are never injected, even if included here.
Requires consul-k8s v0.12+
- `k8sDenyNamespaces` ((#v-connectinject-k8sdenynamespaces)) (`array<string>: []`) - List of k8s namespaces that should not allow Connect
sidecar injection. This list takes precedence over `k8sAllowNamespaces`.
`*` is not supported because then nothing would be allowed to be injected.
For example, if `k8sAllowNamespaces` is `["*"]` and k8sDenyNamespaces is
`["namespace1", "namespace2"]`, then all k8s namespaces besides "namespace1"
and "namespace2" will be available for injection.
Note: `namespaceSelector` takes precedence over this since it is applied first.
`kube-system` and `kube-public` are never injected.
Requires consul-k8s v0.12+.
- `consulNamespaces` ((#v-connectinject-consulnamespaces)) - <EnterpriseAlert inline /> These settings manage the connect injector's interaction with
Consul namespaces (requires consul-ent v1.7+ and consul-k8s v0.12+).
Also, `global.enableConsulNamespaces` must be true.
- `consulDestinationNamespace` ((#v-connectinject-consulnamespaces-consuldestinationnamespace)) (`string: default`) - Name of the Consul namespace to register all
k8s pods into. If the Consul namespace does not already exist,
it will be created. This will be ignored if `mirroringK8S` is true.
- `mirroringK8S` ((#v-connectinject-consulnamespaces-mirroringk8s)) (`boolean: false`) - Causes k8s pods to be registered into a Consul namespace
of the same name as their k8s namespace, optionally prefixed if
`mirroringK8SPrefix` is set below. If the Consul namespace does not
already exist, it will be created. Turning this on overrides the
`consulDestinationNamespace` setting.
- `mirroringK8SPrefix` ((#v-connectinject-consulnamespaces-mirroringk8sprefix)) (`string: ""`) - If `mirroringK8S` is set to true, `mirroringK8SPrefix` allows each Consul namespace
to be given a prefix. For example, if `mirroringK8SPrefix` is set to "k8s-", a
pod in the k8s `staging` namespace will be registered into the
`k8s-staging` Consul namespace.
- `certs` ((#v-connectinject-certs)) - The certs section configures how the webhook TLS certs are configured.
These are the TLS certs for the Kube apiserver communicating to the
webhook. By default, the injector will generate and manage its own certs,
but this requires the ability for the injector to update its own
MutatingWebhookConfiguration. In a production environment, custom certs
should probably be used. Configure the values below to enable this.
- `secretName` ((#v-connectinject-certs-secretname)) (`string: null`) - Name of the secret that has the TLS certificate and
private key to serve the injector webhook. If this is null, then the
injector will default to its automatic management mode that will assign
a service account to the injector to generate its own certificates.
- `caBundle` ((#v-connectinject-certs-cabundle)) (`string: ""`) - Base64-encoded PEM-encoded certificate bundle for the
CA that signed the TLS certificate that the webhook serves. This must
be set if secretName is non-null.
- `certName` ((#v-connectinject-certs-certname)) (`string: tls.crt`) - Name of the file within the secret for
the TLS cert.
- `keyName` ((#v-connectinject-certs-keyname)) (`string: tls.key`) - Name of the file within the secret for
the private TLS key.
- `nodeSelector` ((#v-connectinject-nodeselector)) (`string: null`) - Selector labels for connectInject pod assignment, formatted as a multi-line string.
ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#nodeselector
Example:
```yaml
nodeSelector: |
beta.kubernetes.io/arch: amd64
```
- `affinity` ((#v-connectinject-affinity)) (`string: null`) - Affinity Settings
This should be a multi-line string matching the affinity object
- `tolerations` ((#v-connectinject-tolerations)) (`string: null`) - Toleration Settings
This should be a multi-line string matching the Toleration array
in a PodSpec.
- `aclBindingRuleSelector` ((#v-connectinject-aclbindingruleselector)) (`string: serviceaccount.name!=default`) - Query that defines which Service Accounts
can authenticate to Consul and receive an ACL token during Connect injection.
The default setting, i.e. serviceaccount.name!=default, prevents the
'default' Service Account from logging in.
If set to an empty string all service accounts can log in.
This only has effect if ACLs are enabled.
See https://www.consul.io/docs/acl/acl-auth-methods.html#binding-rules
and https://www.consul.io/docs/acl/auth-methods/kubernetes.html#trusted-identity-attributes
for more details.
Requires Consul >= v1.5 and consul-k8s >= v0.8.0.
- `overrideAuthMethodName` ((#v-connectinject-overrideauthmethodname)) (`string: ""`) - If you are not using global.acls.manageSystemACLs and instead manually setting up an
auth method for Connect inject, set this to the name of your auth method.
- `aclInjectToken` ((#v-connectinject-aclinjecttoken)) - Refers to a Kubernetes secret that you have created that contains
an ACL token for your Consul cluster which allows the Connect injector the correct
permissions. This is only needed if Consul namespaces <EnterpriseAlert inline /> and ACLs
are enabled on the Consul cluster and you are not setting
`global.acls.manageSystemACLs` to `true`.
This token needs to have `operator = "write"` privileges to be able to
create Consul namespaces.
- `secretName` ((#v-connectinject-aclinjecttoken-secretname)) (`string: null`) - The name of the Kubernetes secret.
- `secretKey` ((#v-connectinject-aclinjecttoken-secretkey)) (`string: null`) - The key of the Kubernetes secret.
- `centralConfig` ((#v-connectinject-centralconfig)) - Requires Consul >= v1.5 and consul-k8s >= v0.8.1.
- `enabled` ((#v-connectinject-centralconfig-enabled)) (`boolean: true`) - Controls whether central config is enabled on all servers and clients.
See https://www.consul.io/docs/agent/options.html#enable_central_service_config.
If changing this after installation, servers and clients must be restarted
for the change to take effect.
- `defaultProtocol` ((#v-connectinject-centralconfig-defaultprotocol)) (`string: null`) - Allows you to specify a convenience default protocol if
most of your services are of the same protocol type. The individual annotation
on any given pod will override this value.
Valid values are "http", "http2", "grpc" and "tcp".
- `proxyDefaults` ((#v-connectinject-centralconfig-proxydefaults)) (`string: {}`) - Raw json string that will be written as the value of
the "config" key of the global proxy-defaults config entry.
See: https://www.consul.io/docs/agent/config-entries/proxy-defaults.html
NOTE: Changes to this value after the chart is first installed have _no_
effect. In order to change the proxy-defaults config after installation,
you must use the Consul API.
- `sidecarProxy` ((#v-connectinject-sidecarproxy))
- `resources` ((#v-connectinject-sidecarproxy-resources)) (`map`) - Set default resources for sidecar proxy. If null, that resource won't
be set.
These settings can be overridden on a per-pod basis via these annotations:
- `consul.hashicorp.com/sidecar-proxy-cpu-limit`
- `consul.hashicorp.com/sidecar-proxy-cpu-request`
- `consul.hashicorp.com/sidecar-proxy-memory-limit`
- `consul.hashicorp.com/sidecar-proxy-memory-request`
- `requests` ((#v-connectinject-sidecarproxy-resources-requests))
- `memory` ((#v-connectinject-sidecarproxy-resources-requests-memory)) (`string: null`) - Recommended default: 100Mi
- `cpu` ((#v-connectinject-sidecarproxy-resources-requests-cpu)) (`string: null`) - Recommended default: 100m
- `limits` ((#v-connectinject-sidecarproxy-resources-limits))
- `memory` ((#v-connectinject-sidecarproxy-resources-limits-memory)) (`string: null`) - Recommended default: 100Mi
- `cpu` ((#v-connectinject-sidecarproxy-resources-limits-cpu)) (`string: null`) - Recommended default: 100m
- `initContainer` ((#v-connectinject-initcontainer)) (`map`) - Resource settings for the Connect injected init container.
- `controller` ((#v-controller)) - Controller handles config entry custom resources.
Requires consul >= 1.8.4.
ServiceIntentions require consul 1.9+.
- `enabled` ((#v-controller-enabled)) (`boolean: false`) - Enables the controller for managing custom resources.
- `replicas` ((#v-controller-replicas)) (`integer: 1`) - The number of deployment replicas.
- `logLevel` ((#v-controller-loglevel)) (`string: info`) - Log verbosity level. One of "debug", "info", "warn", or "error".
- `resources` ((#v-controller-resources)) (`map`) - Resource settings for controller pods.
- `nodeSelector` ((#v-controller-nodeselector)) (`string: null`) - Optional YAML string to specify a nodeSelector config.
- `tolerations` ((#v-controller-tolerations)) (`string: null`) - Optional YAML string to specify tolerations.
- `affinity` ((#v-controller-affinity)) (`string: null`) - Affinity Settings
This should be a multi-line string matching the affinity object
- `priorityClassName` ((#v-controller-priorityclassname)) (`string: ""`) - Optional priorityClassName.
- `meshGateway` ((#v-meshgateway)) - Mesh Gateways enable Consul Connect to work across Consul datacenters.
- `enabled` ((#v-meshgateway-enabled)) (`boolean: false`) - If mesh gateways are enabled, a Deployment will be created that runs
gateways and Consul Connect will be configured to use gateways.
See https://www.consul.io/docs/connect/mesh_gateway.html
Requirements: consul 1.6.0+ and consul-k8s 0.15.0+ if using
global.acls.manageSystemACLs.
- `globalMode` ((#v-meshgateway-globalmode)) (`string: local`) - Globally configure which mode the gateway should run in.
Can be set to either "remote", "local", "none" or empty string or null.
See https://consul.io/docs/connect/mesh_gateway.html#modes-of-operation for
a description of each mode.
If set to anything other than "" or null, connectInject.centralConfig.enabled
should be set to true so that the global config will actually be used.
If set to the empty string, no global default will be set and the gateway mode
will need to be set individually for each service.
- `replicas` ((#v-meshgateway-replicas)) (`integer: 2`) - Number of replicas for the Deployment.
- `wanAddress` ((#v-meshgateway-wanaddress)) - What gets registered as WAN address for the gateway.
- `source` ((#v-meshgateway-wanaddress-source)) (`string: Service`) - source configures where to retrieve the WAN address (and possibly port)
for the mesh gateway from.
Can be set to either: `Service`, `NodeIP`, `NodeName` or `Static`.
- `Service` - Determine the address based on the service type.
- If `service.type=LoadBalancer` use the external IP or hostname of
the service. Use the port set by `service.port`.
- If `service.type=NodePort` use the Node IP. The port will be set to
`service.nodePort` so `service.nodePort` cannot be null.
- If `service.type=ClusterIP` use the `ClusterIP`. The port will be set to
`service.port`.
- `service.type=ExternalName` is not supported.
- `NodeIP` - The node IP as provided by the Kubernetes downward API.
- `NodeName` - The name of the node as provided by the Kubernetes downward
API. This is useful if the node names are DNS entries that
are routable from other datacenters.
- `Static` - Use the address hardcoded in `meshGateway.wanAddress.static`.
- `port` ((#v-meshgateway-wanaddress-port)) (`integer: 443`) - Port that gets registered for WAN traffic.
If source is set to "Service" then this setting will have no effect.
See the documentation for source as to which port will be used in that
case.
- `static` ((#v-meshgateway-wanaddress-static)) (`string: ""`) - If source is set to "Static" then this value will be used as the WAN
address of the mesh gateways. This is useful if you've configured a
DNS entry to point to your mesh gateways.
- `service` ((#v-meshgateway-service)) - The service option configures the Service that fronts the Gateway Deployment.
- `enabled` ((#v-meshgateway-service-enabled)) (`boolean: true`) - Whether to create a Service or not.
- `type` ((#v-meshgateway-service-type)) (`string: LoadBalancer`) - Type of service, ex. LoadBalancer, ClusterIP.
- `port` ((#v-meshgateway-service-port)) (`integer: 443`) - Port that the service will be exposed on.
The targetPort will be set to meshGateway.containerPort.
- `nodePort` ((#v-meshgateway-service-nodeport)) (`integer: null`) - Optionally hardcode the nodePort of the service if using a NodePort service.
If not set and using a NodePort service, Kubernetes will automatically assign
a port.
- `annotations` ((#v-meshgateway-service-annotations)) (`string: null`) - Annotations to apply to the mesh gateway service.
Example:
```yaml
annotations: |
'annotation-key': annotation-value
```
- `additionalSpec` ((#v-meshgateway-service-additionalspec)) (`string: null`) - Optional YAML string that will be appended to the Service spec.
- `hostNetwork` ((#v-meshgateway-hostnetwork)) (`boolean: false`) - If set to true, gateway Pods will run on the host network.
- `dnsPolicy` ((#v-meshgateway-dnspolicy)) (`string: null`) - dnsPolicy to use.
- `consulServiceName` ((#v-meshgateway-consulservicename)) (`string: mesh-gateway`) - Consul service name for the mesh gateways.
Cannot be set to anything other than "mesh-gateway" if
global.acls.manageSystemACLs is true since the ACL token
generated is only for the name 'mesh-gateway'.
- `containerPort` ((#v-meshgateway-containerport)) (`integer: 8443`) - Port that the gateway will run on inside the container.
- `hostPort` ((#v-meshgateway-hostport)) (`integer: null`) - Optional hostPort for the gateway to be exposed on.
This can be used with wanAddress.port and wanAddress.useNodeIP
to expose the gateways directly from the node.
If hostNetwork is true, this must be null or set to the same port as
containerPort.
NOTE: Cannot set to 8500 or 8502 because those are reserved for the Consul
agent.
- `resources` ((#v-meshgateway-resources)) (`map`) - Resource settings for mesh gateway pods.
NOTE: The use of a YAML string is deprecated. Instead, set directly as a
YAML map.
- `initCopyConsulContainer` ((#v-meshgateway-initcopyconsulcontainer)) (`map`) - Resource settings for the `copy-consul-bin` init container.
- `affinity` ((#v-meshgateway-affinity)) (`string`) - By default, we set an anti-affinity so that two gateway pods won't be
on the same node. NOTE: Gateways require that Consul client agents are
also running on the nodes alongside each gateway pod.
- `tolerations` ((#v-meshgateway-tolerations)) (`string: null`) - Optional YAML string to specify tolerations.
- `nodeSelector` ((#v-meshgateway-nodeselector)) (`string: null`) - Optional YAML string to specify a nodeSelector config.
- `priorityClassName` ((#v-meshgateway-priorityclassname)) (`string: ""`) - Optional priorityClassName.
- `annotations` ((#v-meshgateway-annotations)) (`string: null`) - Annotations to apply to the mesh gateway deployment.
Example:
```yaml
annotations: |
'annotation-key': annotation-value
```
- `ingressGateways` ((#v-ingressgateways)) - Configuration options for ingress gateways. Default values for all
ingress gateways are defined in `ingressGateways.defaults`. Any of
these values may be overridden in `ingressGateways.gateways` for a
specific gateway with the exception of annotations. Annotations will
include both the default annotations and any additional ones defined
for a specific gateway.
Requirements: consul >= 1.8.0 and consul-k8s >= 0.16.0 if using
global.acls.manageSystemACLs and consul-k8s >= 0.10.0 if not.
- `enabled` ((#v-ingressgateways-enabled)) (`boolean: false`) - Enable ingress gateway deployment. Requires `connectInject.enabled=true`
and `client.enabled=true`.
- `defaults` ((#v-ingressgateways-defaults)) - Defaults sets default values for all gateway fields. With the exception
of annotations, defining any of these values in the `gateways` list
will override the default values provided here. Annotations will
include both the default annotations and any additional ones defined
for a specific gateway.
- `replicas` ((#v-ingressgateways-defaults-replicas)) (`integer: 2`) - Number of replicas for each ingress gateway defined.
- `service` ((#v-ingressgateways-defaults-service)) - The service options configure the Service that fronts the gateway Deployment.
- `type` ((#v-ingressgateways-defaults-service-type)) (`string: ClusterIP`) - Type of service: LoadBalancer, ClusterIP or NodePort. If using NodePort service
type, you must set the desired nodePorts in the `ports` setting below.
- `ports` ((#v-ingressgateways-defaults-service-ports)) (`array<map>: [{port: 8080, port: 8443}]`) - Ports that will be exposed on the service and gateway container. Any
ports defined as ingress listeners on the gateway's Consul configuration
entry should be included here. The first port will be used as part of
the Consul service registration for the gateway and be listed in its
SRV record. If using a NodePort service type, you must specify the
desired nodePort for each exposed port.
- `annotations` ((#v-ingressgateways-defaults-service-annotations)) (`string: null`) - Annotations to apply to the ingress gateway service. Annotations defined
here will be applied to all ingress gateway services in addition to any
service annotations defined for a specific gateway in `ingressGateways.gateways`.
Example:
```yaml
annotations: |
'annotation-key': annotation-value
```
- `additionalSpec` ((#v-ingressgateways-defaults-service-additionalspec)) (`string: null`) - Optional YAML string that will be appended to the Service spec.
- `resources` ((#v-ingressgateways-defaults-resources)) (`map`) - Resource limits for all ingress gateway pods
- `initCopyConsulContainer` ((#v-ingressgateways-defaults-initcopyconsulcontainer)) (`map`) - Resource settings for the `copy-consul-bin` init container.
- `affinity` ((#v-ingressgateways-defaults-affinity)) (`string`) - By default, we set an anti-affinity so that two of the same gateway pods
won't be on the same node. NOTE: Gateways require that Consul client agents are
also running on the nodes alongside each gateway pod.
- `tolerations` ((#v-ingressgateways-defaults-tolerations)) (`string: null`) - Optional YAML string to specify tolerations.
- `nodeSelector` ((#v-ingressgateways-defaults-nodeselector)) (`string: null`) - Optional YAML string to specify a nodeSelector config.
- `priorityClassName` ((#v-ingressgateways-defaults-priorityclassname)) (`string: ""`) - Optional priorityClassName.
- `annotations` ((#v-ingressgateways-defaults-annotations)) (`string: null`) - Annotations to apply to the ingress gateway deployment. Annotations defined
here will be applied to all ingress gateway deployments in addition to any
annotations defined for a specific gateway in `ingressGateways.gateways`.
Example:
```yaml
annotations: |
"annotation-key": 'annotation-value'
```
- `consulNamespace` ((#v-ingressgateways-defaults-consulnamespace)) (`string: default`) - <EnterpriseAlert inline /> `consulNamespace` defines the Consul namespace to register
the gateway into. Requires `global.enableConsulNamespaces` to be true and
Consul Enterprise v1.7+ with a valid Consul Enterprise license.
Note: The Consul namespace MUST exist before the gateway is deployed.
- `gateways` ((#v-ingressgateways-gateways)) (`array<map>`) - Gateways is a list of gateway objects. The only required field for
each is `name`, though they can also contain any of the fields in
`defaults`. Values defined here override the defaults except in the
case of annotations where both will be applied.
- `name` ((#v-ingressgateways-gateways-name)) (`string: ingress-gateway`)
- `terminatingGateways` ((#v-terminatinggateways)) - Configuration options for terminating gateways. Default values for all
terminating gateways are defined in `terminatingGateways.defaults`. Any of
these values may be overridden in `terminatingGateways.gateways` for a
specific gateway with the exception of annotations. Annotations will
include both the default annotations and any additional ones defined
for a specific gateway.
Requirements: consul >= 1.8.0 and consul-k8s >= 0.16.0 if using
global.acls.manageSystemACLs and consul-k8s >= 0.10.0 if not.
- `enabled` ((#v-terminatinggateways-enabled)) (`boolean: false`) - Enable terminating gateway deployment. Requires `connectInject.enabled=true`
and `client.enabled=true`.
- `defaults` ((#v-terminatinggateways-defaults)) - Defaults sets default values for all gateway fields. With the exception
of annotations, defining any of these values in the `gateways` list
will override the default values provided here. Annotations will
include both the default annotations and any additional ones defined
for a specific gateway.
- `replicas` ((#v-terminatinggateways-defaults-replicas)) (`integer: 2`) - Number of replicas for each terminating gateway defined.
- `extraVolumes` ((#v-terminatinggateways-defaults-extravolumes)) (`array<map>`) - A list of extra volumes to mount. These will be exposed to Consul in the path `/consul/userconfig/<name>/`.
Example:
```yaml
extraVolumes:
- type: secret
name: my-secret
items: # optional items array
- key: key
path: path # secret will now mount to /consul/userconfig/my-secret/path
```
- `resources` ((#v-terminatinggateways-defaults-resources)) (`map`) - Resource limits for all terminating gateway pods
- `initCopyConsulContainer` ((#v-terminatinggateways-defaults-initcopyconsulcontainer)) (`map`) - Resource settings for the `copy-consul-bin` init container.
- `affinity` ((#v-terminatinggateways-defaults-affinity)) (`string`) - By default, we set an anti-affinity so that two of the same gateway pods
won't be on the same node. NOTE: Gateways require that Consul client agents are
also running on the nodes alongside each gateway pod.
- `tolerations` ((#v-terminatinggateways-defaults-tolerations)) (`string: null`) - Optional YAML string to specify tolerations.
- `nodeSelector` ((#v-terminatinggateways-defaults-nodeselector)) (`string: null`) - Optional YAML string to specify a nodeSelector config.
- `priorityClassName` ((#v-terminatinggateways-defaults-priorityclassname)) (`string: ""`) - Optional priorityClassName.
- `annotations` ((#v-terminatinggateways-defaults-annotations)) (`string: null`) - Annotations to apply to the terminating gateway deployment. Annotations defined
here will be applied to all terminating gateway deployments in addition to any
annotations defined for a specific gateway in `terminatingGateways.gateways`.
Example:
```yaml
annotations: |
'annotation-key': annotation-value
```
- `consulNamespace` ((#v-terminatinggateways-defaults-consulnamespace)) (`string: default`) - <EnterpriseAlert inline /> `consulNamespace` defines the Consul namespace to register
the gateway into. Requires `global.enableConsulNamespaces` to be true and
Consul Enterprise v1.7+ with a valid Consul Enterprise license.
Note: The Consul namespace MUST exist before the gateway is deployed.
- `gateways` ((#v-terminatinggateways-gateways)) (`array<map>`) - Gateways is a list of gateway objects. The only required field for
each is `name`, though they can also contain any of the fields in
`defaults`. Values defined here override the defaults except in the
case of annotations where both will be applied.
- `name` ((#v-terminatinggateways-gateways-name)) (`string: terminating-gateway`)
- `tests` ((#v-tests)) - Control whether a test Pod manifest is generated when running helm template.
When using helm install, the test Pod is not submitted to the cluster so this
is only useful when running helm template.
- `enabled` ((#v-tests-enabled)) (`boolean: true`)
<!-- codegen: end -->
## Helm Chart Examples
The below `config.yaml` results in a single server Consul cluster with a `LoadBalancer` to allow external access to the UI and API.
```yaml
# config.yaml
server:
replicas: 1
bootstrapExpect: 1
ui:
service:
type: LoadBalancer
```
The below `config.yaml` results in a three server Consul Enterprise cluster with 100GB of storage and automatic Connect injection.
Note, this would require a secret that contains the enterprise license key.
```yaml
# config.yaml
global:
image: 'hashicorp/consul-enterprise:1.4.2-ent'
server:
replicas: 3
bootstrapExpect: 3
enterpriseLicense:
secretName: 'consul-license'
secretKey: 'key'
storage: 100Gi
connect: true
client:
grpc: true
connectInject:
enabled: true
default: false
```
## Customizing the Helm Chart
Consul within Kubernetes is highly configurable and the Helm chart contains dozens
of the most commonly used configuration options.
If you need to extend the Helm chart with additional options, we recommend using a third-party tool,
such as [kustomize](https://github.com/kubernetes-sigs/kustomize) or [ship](https://github.com/replicatedhq/ship).
Note that the Helm chart heavily relies on Helm lifecycle hooks, and so features like bootstrapping ACLs or TLS
will not work as expected. Additionally, we can make changes to the internal implementation (e.g., renaming template files) that
may be backward incompatible with such customizations.
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