The metrics on the eval broker include labels for the job ID, but under a high
volume of dispatch workloads, this results in excessive heap usage on the
leader. Dispatch workloads should use their parent ID rather than their child ID
for any metrics we collect.
Also, eliminate an extra copy of the labels. And remove the extremely high
cardinality `"eval_id"` label from the `nomad.broker.eval_waiting` metric.
Fixes: https://github.com/hashicorp/nomad/issues/26657
When configuring Nomad Enterprise with Consul Enterprise and multiple
namespaces, you need to include the `consul_namespace` mapping in the auth
method configuration. Otherwise you'll see an error like "unknown variable
accessed: value.consul_namespace". There's no example of the updated auth method
configuration you need, which makes this detail unclear when we're showing the
claim being used in the following `consul acl auth-method create` command.
Typically the `LOGNAME` environment variable should be set according
to the values within `/etc/passwd` and represents the name of the
logged in user. This should be set, where possible, alongside the
USER and HOME variables for all drivers that use the shared
executor and do not use a sub-shell.
don't require "bridge" network mode when using connect{}
we document this as "at your own risk" because CNI configuration
is so flexible that we can't guarantee a user's network will work,
but Nomad's "bridge" CNI config may be used as a reference.
Adds a new `windows` command which is available when running on
a Windows hosts. The command includes two new subcommands:
* `service install`
* `service uninstall`
The `service install` command will install the called binary into
the Windows program files directory, create a new Windows service,
setup configuration and data directories, and register the service
with the Window eventlog. If the service and/or binary already
exist, the service will be stopped, service and eventlog updated
if needed, binary replaced, and the service started again.
The `service uninstall` command will stop the service, remove the
Windows service, and deregister the service with the eventlog. It
will not remove the configuration/data directory nor will it remove
the installed binary.
This adds artifact inspection after download to detect any issues
with the content fetched. Currently this means checking for any
symlinks within the artifact that resolve outside the task or
allocation directories. On platforms where lockdown is available
(some Linux) this inspection is not performed.
The inspection can be disabled with the DisableArtifactInspection
option. A dedicated option for disabling this behavior allows
the DisableFilesystemIsolation option to be enabled but still
have artifacts inspected after download.
* docs: revert to labels={"foo.bar": "baz"} style
Back in #24074 I thought it was necessary to wrap labels in a list to
support quoted keys in hcl2. This... doesn't appear to be true at all?
The simpler `labels={...}` syntax appears to work just fine.
I updated the docs and a test (and modernized it a bit). I also switched
some other examples to the `labels = {}` format from the old `labels{}`
format.
* copywronged
* fmtd
The go-metrics library retains Prometheus metrics in memory until expiration,
but the expiration logic requires that the metrics are being regularly
scraped. If you don't have a Prometheus server scraping, this leads to
ever-increasing memory usage. In particular, high volume dispatch workloads emit
a large set of label values and if these are not eventually aged out the bulk of
Nomad server memory can end up consumed by metrics.
* fix(doc): fix links for task driver plugins
host URL was wrong, changed from develoepr to developer
* Update stateful-workloads.mdx
Fix link for Nomad event stream page
In https://github.com/hashicorp/nomad/issues/15459 we've had a bit of
back-and-forth as a result of applying Nomad environment variables where they
typically should not be used. Clarify that the env vars are for the CLI and
mostly not for the agent. Also move the `NOMAD_CLI_SHOW_HINTS` description into
the correct section.
The docs for the `template` block accurately describe the template configuration
default function denylist in the body but the default parameters are missing
values. The equivalent docs in the `client` configuration are missing
`executeTemplate` as well.
* Add -log-file-export and -log-lookback commands to add historical log to
debug capture
* use monitor.PrepFile() helper for other historical log tests
* Add MonitorExport command and handlers
* Implement autocomplete
* Require nomad in serviceName
* Fix race in StreamReader.Read
* Add and use framer.Flush() to coordinate function exit
* Add LogFile to client/Server config and read NomadLogPath in rpcHandler instead of HTTPServer
* Parameterize StreamFixed stream size
Affinities and contraints use similar feasibility checking logic to determine if
a given node matches (although affinities don't support all the same
operators). Most operators don't allow `value` to be unset. Update the docs to
reflect this.
Fixes: https://github.com/hashicorp/nomad/issues/24983
During the big docs rearchitecture, we split up the task driver pages into
separate job declaration and driver configuration pages. The link for the
`raw_exec` driver to the configuration page is a self-reference.
The documentation for CSI and DHV has a list of the available access modes, but
doesn't explain what they mean in terms of what jobs can request, the scheduler
behavior, or the CSI plugin behavior. Expand on the information available in the
CSI specification and provide a description of DHV's behavior as well.
Ref: https://github.com/container-storage-interface/spec/blob/master/spec.md#createvolume
The current autoscaler docs implies that it has minimal or non-working support
for Nomad namespaces. Whereas in fact the namespace support works fine but just
doesn't allow configuring multiple namespaces without using a wildcard (for
now). Make this more clear and fix the reference to the configuration "below",
which is no longer on that same page.
Ref: https://github.com/hashicorp/nomad-autoscaler/issues/65
