Previously, every Envoy Connect sidecar would spawn as many worker
threads as logical CPU cores. That is Envoy's default behavior when
`--concurrency` is not explicitly set. Nomad now sets the concurrency
flag to 1, which is sensible for the default cpu = 250 Mhz resources
allocated for sidecar proxies. The concurrency value can be configured
in Client configuration by setting `meta.connect.proxy_concurrency`.
Closes#9341
* Remove Managed Sinks from Nomad
Managed Sinks were a beta feature in Nomad 1.0-beta2. During the beta
period it was determined that this was not a scalable approach to
support community and third party sinks.
* update comment
* changelog
Before, upstreams could only be defined using the default datacenter.
Now, the `datacenter` field can be set in a connect upstream definition,
informing consul of the desire for an instance of the upstream service
in the specified datacenter. The field is optional and continues to
default to the local datacenter.
Closes#8964
Fix#9210 .
This update the executor so it honors the User when using nomad alloc exec. The bug was that the exec task didn't honor the init command when execing.
This PR adds the ability to set HTTP headers when downloading
an artifact from an `http` or `https` resource.
The implementation in `go-getter` is such that a new `HTTPGetter`
must be created for each artifact that sets headers (as opposed
to conveniently setting headers per-request). This PR maintains
the memoization of the default Getter objects, creating new ones
only for artifacts where headers are set.
Closes#9306
Previously, connect sidecars would be re-registered with consul every cycle
of Nomad's reconciliation loop around Consul service registrations. This is
because part of the comparison used `reflect.DeepEqual` on []string objects,
which returns false when one object is `[]string{}` and the other is `[]string{}(nil)`.
Unforunately, this was always the case, and every Connect sidecar service
would be re-registered on every iteration, which happens every 30 seconds.
When raw_exec is configured with [`no_cgroups`](https://www.nomadproject.io/docs/drivers/raw_exec#no_cgroups), raw_exec shouldn't attempt to create a cgroup.
Prior to this change, we accidentally always required freezer cgroup to do stats PID tracking. We already have the proper fallback in place for metrics, so only need to ensure that we don't create a cgroup for the task.
Fixes https://github.com/hashicorp/nomad/issues/8565
The default behavior for `docker.volumes.enabled` is intended to be `false`,
but the HCL schema defaults to `true` if the value is unset. Set the default
literal value to `true`.
Additionally, Docker driver mounts of type "volume" (but not "bind") are not
being properly sandboxed with that setting. Disable Docker mounts with type
"volume" entirely whenever the `docker.volumes.enabled` flag is set to
false. Note this is unrelated to the `volume_mount` feature, which is
constrained to preconfigured host volumes or whatever is mounted by a CSI
plugin.
This changeset includes updates to unit tests that should have been failing
under the documented behavior but were not.
* consul: advertise cni and multi host interface addresses
* structs: add service/check address_mode validation
* ar/groupservices: fetch networkstatus at hook runtime
* ar/groupservice: nil check network status getter before calling
* consul: comment network status can be nil
Stop coercing version of new job to 0 in the state_store, so that we can add
regions to a multi-region deployment. Send new version, rather than existing
version, to MRD to accomodate version-choosing logic changes in ENT.
Co-authored-by: Chris Baker <1675087+cgbaker@users.noreply.github.com>
Previously, Nomad was using a hand-made lookup table for looking
up EC2 CPU performance characteristics (core count + speed = ticks).
This data was incomplete and incorrect depending on region. The AWS
API has the correct data but requires API keys to use (i.e. should not
be queried directly from Nomad).
This change introduces a lookup table generated by a small command line
tool in Nomad's tools module which uses the Amazon AWS API.
Running the tool requires AWS_* environment variables set.
$ # in nomad/tools/cpuinfo
$ go run .
Going forward, Nomad can incorporate regeneration of the lookup table
somewhere in the CI pipeline so that we remain up-to-date on the latest
offerings from EC2.
Fixes#7830
The CSI specification for `ValidateVolumeCapability` says that we shall
"reconcile successful capability-validation responses by comparing the
validated capabilities with those that it had originally requested" but leaves
the details of that reconcilation unspecified. This API is not implemented in
Kubernetes, so controller plugins don't have a real-world implementation to
verify their behavior against.
We have found that CSI plugins in the wild may return "successful" but
incomplete `VolumeCapability` responses, so we can't require that all
capabilities we expect have been validated, only that the ones that have been
validated match. This appears to violate the CSI specification but until
that's been resolved in upstream we have to loosen our validation
requirements. The tradeoff is that we're more likely to have runtime errors
during `NodeStageVolume` instead of at the time of volume registration.
Volumes using attachment mode `file-system` use the CSI filesystem API when
they're mounted, and can be passed mount options. But `block-device` mode
volumes don't have this option. When RPCs are made to plugins, we are silently
dropping the mount options we don't expect to see, but this results in a poor
operator experience when the mount options aren't honored. This changeset
makes passing mount options to a `block-device` volume a validation error.
Fixes a bug where the `nomad volume detach` command would not accept a node ID
prefix instead of a full node ID. The volume ID is already prefix matched
server-side.
Fixes a bug where CSI volumes with the `MULTI_NODE_MULTI_WRITER` access mode
were using the same logic as `MULTI_NODE_SINGLE_WRITER` to determine whether
the volume had writer claims available for scheduling.
Extends CSI claim endpoint test to exercise multi-reader and make sure `WriteFreeClaims`
is exercised for multi-writer in feasibility test.
This PR adds a version specific upgrade note about the docker stop
signal behavior. Also adds test for the signal logic in docker driver.
Closes#8932 which was fixed in #8933
Since CPU resources are usually a soft limit it is desirable to allow
setting it as low as possible to allow tasks to run only in "idle" time.
Setting it to 0 is still not allowed to avoid potential unintentional
side effects with allowing a zero value. While there may not be any side
effects this commit attempts to minimize risk by avoiding the issue.
This does *not* change the defaults.
When defining a script-check in a group-level service, Nomad needs to
know which task is associated with the check so that it can use the
correct task driver to execute the check.
This PR fixes two bugs:
1) validate service.task or service.check.task is configured
2) make service.check.task inherit service.task if it is itself unset
Fixes#8952
The 'docker.config.infra_image' would default to an amd64 container.
It is possible to reference the correct image for a platform using
the `runtime.GOARCH` variable, eliminating the need to explicitly set
the `infra_image` on non-amd64 platforms.
Also upgrade to Google's pause container version 3.1 from 3.0, which
includes some enhancements around process management.
Fixes#8926
This change fixes a bug where lost/failed allocations are replaced by
allocations with the latest versions, even if the version hasn't been
promoted yet.
Now, when generating a plan for lost/failed allocations, the scheduler
first checks if the current deployment is in Canary stage, and if so, it
ensures that any lost/failed allocations is replaced one with the latest
promoted version instead.
This change adds the ability to set the fields `success_before_passing` and
`failures_before_critical` on Consul service check definitions. This is a
feature added to Consul v1.7.0 and later.
https://www.consul.io/docs/agent/checks#success-failures-before-passing-critical
Nomad doesn't do much besides pass the fields through to Consul.
Fixes#6913
Fixes https://github.com/hashicorp/nomad/issues/8544
This PR fixes a bug where using `nomad job plan ...` always report no change if the submitted job contain scaling.
The issue has three contributing factors:
1. The plan endpoint doesn't populate the required scaling policy ID; unlike the job register endpoint
2. The plan endpoint suppresses errors on job insertion - the job insertion fails here, because the scaling policy is missing the required ID
3. The scheduler reports no update necessary when the relevant job isn't in store (because the insertion failed)
This PR fixes the first two factors. Changing the scheduler to be more strict might make sense, but may violate some idempotency invariant or make the scheduler more brittle.
The spacing has been broken for job types that use this yield
(parameterised and periodic) since I added the exec button
to this template. This could be further refined to allow a more
logical grouping of elements where buttons and tags are
separate.
