open-consul/command/connect/envoy/bootstrap_tpl.go

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package envoy
// BootstrapTplArgs is the set of arguments that may be interpolated into the
// Envoy bootstrap template.
type BootstrapTplArgs struct {
GRPC
// ProxyCluster is the cluster name for the the Envoy `node` specification and
// is typically the same as the ProxyID.
ProxyCluster string
// ProxyID is the ID of the proxy service instance as registered with the
// local Consul agent. This must be used as the Envoy `node.id` in order for
// the agent to deliver the correct configuration.
ProxyID string
// ProxySourceService is the Consul service name to report for this proxy
// instance's source service label. For sidecars it should be the
// Proxy.DestinationServiceName. For gateways and similar it is the service
// name of the proxy service itself.
ProxySourceService string
// AgentCAPEM is the CA to use to verify the local agent gRPC service if
// TLS is enabled.
AgentCAPEM string
// AdminAccessLogPath The path to write the access log for the
// administration server. If no access log is desired specify
// "/dev/null". By default it will use "/dev/null".
AdminAccessLogPath string
// AdminBindAddress is the address the Envoy admin server should bind to.
AdminBindAddress string
// AdminBindPort is the port the Envoy admin server should bind to.
AdminBindPort string
// LocalAgentClusterName is the name reserved for the local Consul agent gRPC
// service and is expected to be used for that purpose.
LocalAgentClusterName string
// Token is the Consul ACL token provided which is required to make gRPC
// discovery requests. If non-empty, this must be configured as the gRPC
// service "initial_metadata" with the key "x-consul-token" in order to
// authorize the discovery streaming RPCs.
Token string
// StaticClustersJSON is JSON string, each is expected to be a valid Cluster
// definition. They are appended to the "static_resources.clusters" list. Note
// that cluster names should be chosen in such a way that they won't collide
// with service names since we use plain service names as cluster names in xDS
// to make metrics population simpler and cluster names mush be unique. See
// https://www.envoyproxy.io/docs/envoy/v1.9.0/api-v2/api/v2/cds.proto.
StaticClustersJSON string
// StaticListenersJSON is a JSON string containing zero or more Listener
// definitions. They are appended to the "static_resources.listeners" list. A
// single listener should be given as a plain object, if more than one is to
// be added, they should be separated by a comma suitable for direct injection
// into a JSON array.
// See https://www.envoyproxy.io/docs/envoy/v1.9.0/api-v2/api/v2/lds.proto.
StaticListenersJSON string
// StatsSinksJSON is a JSON string containing an array in the right format
// to be rendered as the body of the `stats_sinks` field at the top level of
// the bootstrap config. It's format may vary based on Envoy version used. See
// https://www.envoyproxy.io/docs/envoy/v1.9.0/api-v2/config/metrics/v2/stats.proto#config-metrics-v2-statssink.
StatsSinksJSON string
// StatsConfigJSON is a JSON string containing an object in the right format
// to be rendered as the body of the `stats_config` field at the top level of
// the bootstrap config. It's format may vary based on Envoy version used. See
// https://www.envoyproxy.io/docs/envoy/v1.9.0/api-v2/config/metrics/v2/stats.proto#envoy-api-msg-config-metrics-v2-statsconfig.
StatsConfigJSON string
// StatsFlushInterval is the time duration between Envoy stats flushes. It is
// in proto3 "duration" string format for example "1.12s" See
// https://developers.google.com/protocol-buffers/docs/proto3#json and
// https://www.envoyproxy.io/docs/envoy/v1.9.0/api-v2/config/bootstrap/v2/bootstrap.proto#bootstrap
StatsFlushInterval string
// TracingConfigJSON is a JSON string containing an object in the right format
// to be rendered as the body of the `tracing` field at the top level of
// the bootstrap config. It's format may vary based on Envoy version used.
// See https://www.envoyproxy.io/docs/envoy/v1.9.0/api-v2/config/trace/v2/trace.proto.
TracingConfigJSON string
// Namespace is the Consul Enterprise Namespace of the proxy service instance
// as registered with the Consul agent.
Namespace string
// Partition is the Consul Enterprise Partition of the proxy service instance
// as registered with the Consul agent.
Partition string
// Datacenter is the datacenter where the proxy service instance is registered.
Datacenter string
// PrometheusBackendPort will configure a "prometheus_backend" cluster which
// envoy_prometheus_bind_addr will point to.
PrometheusBackendPort string
// PrometheusScrapePath will configure the path where metrics are exposed on
// the envoy_prometheus_bind_addr listener.
PrometheusScrapePath string
}
// GRPC settings used in the bootstrap template.
type GRPC struct {
// AgentAddress is the IP address of the local agent where the proxy instance
// is registered.
AgentAddress string
// AgentPort is the gRPC port exposed on the local agent.
AgentPort string
// AgentTLS is true if the local agent gRPC service should be accessed over
// TLS.
AgentTLS bool
// AgentSocket is the path to a Unix Socket for communicating with the
// local agent's gRPC endpoint. Disabled if the empty (the default),
// but overrides AgentAddress and AgentPort if set.
AgentSocket string
}
// bootstrapTemplate sets '"ignore_health_on_host_removal": false' JUST to force this to be detected as a v3 bootstrap
// config.
const bootstrapTemplate = `{
"admin": {
"access_log_path": "{{ .AdminAccessLogPath }}",
"address": {
"socket_address": {
"address": "{{ .AdminBindAddress }}",
"port_value": {{ .AdminBindPort }}
}
}
},
"node": {
"cluster": "{{ .ProxyCluster }}",
"id": "{{ .ProxyID }}",
"metadata": {
"namespace": "{{if ne .Namespace ""}}{{ .Namespace }}{{else}}default{{end}}",
"partition": "{{if ne .Partition ""}}{{ .Partition }}{{else}}default{{end}}"
}
},
"static_resources": {
"clusters": [
{
"name": "{{ .LocalAgentClusterName }}",
"ignore_health_on_host_removal": false,
"connect_timeout": "1s",
"type": "STATIC",
{{- if .AgentTLS -}}
"transport_socket": {
"name": "tls",
"typed_config": {
"@type": "type.googleapis.com/envoy.extensions.transport_sockets.tls.v3.UpstreamTlsContext",
"common_tls_context": {
"validation_context": {
"trusted_ca": {
"inline_string": "{{ .AgentCAPEM }}"
}
}
}
}
},
{{- end }}
"http2_protocol_options": {},
"loadAssignment": {
"clusterName": "{{ .LocalAgentClusterName }}",
"endpoints": [
{
"lbEndpoints": [
{
"endpoint": {
"address": {
{{- if .AgentSocket -}}
"pipe": {
"path": "{{ .AgentSocket }}"
}
{{- else -}}
"socket_address": {
"address": "{{ .AgentAddress }}",
"port_value": {{ .AgentPort }}
}
{{- end -}}
}
}
}
]
}
]
}
}
{{- if .StaticClustersJSON -}}
,
{{ .StaticClustersJSON }}
{{- end }}
]{{- if .StaticListenersJSON -}}
,
"listeners": [
{{ .StaticListenersJSON }}
]
{{- end }}
},
{{- if .StatsSinksJSON }}
"stats_sinks": {{ .StatsSinksJSON }},
{{- end }}
{{- if .StatsConfigJSON }}
"stats_config": {{ .StatsConfigJSON }},
{{- end }}
{{- if .StatsFlushInterval }}
"stats_flush_interval": "{{ .StatsFlushInterval }}",
{{- end }}
{{- if .TracingConfigJSON }}
"tracing": {{ .TracingConfigJSON }},
{{- end }}
"dynamic_resources": {
"lds_config": {
"ads": {},
"resource_api_version": "V3"
},
"cds_config": {
"ads": {},
"resource_api_version": "V3"
},
"ads_config": {
Support Incremental xDS mode (#9855) This adds support for the Incremental xDS protocol when using xDS v3. This is best reviewed commit-by-commit and will not be squashed when merged. Union of all commit messages follows to give an overarching summary: xds: exclusively support incremental xDS when using xDS v3 Attempts to use SoTW via v3 will fail, much like attempts to use incremental via v2 will fail. Work around a strange older envoy behavior involving empty CDS responses over incremental xDS. xds: various cleanups and refactors that don't strictly concern the addition of incremental xDS support Dissolve the connectionInfo struct in favor of per-connection ResourceGenerators instead. Do a better job of ensuring the xds code uses a well configured logger that accurately describes the connected client. xds: pull out checkStreamACLs method in advance of a later commit xds: rewrite SoTW xDS protocol tests to use protobufs rather than hand-rolled json strings In the test we very lightly reuse some of the more boring protobuf construction helper code that is also technically under test. The important thing of the protocol tests is testing the protocol. The actual inputs and outputs are largely already handled by the xds golden output tests now so these protocol tests don't have to do double-duty. This also updates the SoTW protocol test to exclusively use xDS v2 which is the only variant of SoTW that will be supported in Consul 1.10. xds: default xds.Server.AuthCheckFrequency at use-time instead of construction-time
2021-04-29 18:54:05 +00:00
"api_type": "DELTA_GRPC",
"transport_api_version": "V3",
"grpc_services": {
"initial_metadata": [
{
"key": "x-consul-token",
"value": "{{ .Token }}"
}
],
"envoy_grpc": {
"cluster_name": "{{ .LocalAgentClusterName }}"
}
}
}
}
}
`