Mainly note that block labels need to be string literals, and that decimals without a leading significant digits aren't acceptable anymore (e.g. .9 are required to be 0.9).
Dynamic blocks can be used here, but feels too much of a hack, or a hammer to highlight it here, specially given the error reporting and debugging isn't so straightforward. I'd advocate internally for relaxing the restriction and allowing expressions in block labels instead.
Related to https://github.com/hashicorp/nomad/issues/9522
During testing we discovered old versions of Nomad and Consul seemed to
prevent Envoy from accepting new connections while the Nomad agent was
being upgraded.
* systemd should be downcased
* containerd should be downcased
* spellchecking, adjust list item spacing
* QEMU should be upcased
* spelling, it's->its
* Fewer exclamation points; drive-by list spacing
* Update website/pages/docs/internals/security.mdx
* Namespace is not ent only now.
Co-authored-by: Tim Gross <tgross@hashicorp.com>
Expand `volume` and `volume_mount` sections to describe how to use HCL2
dynamic blocks and interpolation to have finer-grained control over how
allocations get volumes.
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
If Docker auth helpers are used but aith fails or the image isn't found, we
hard fail the task. Users may set `auth_soft_fail` to fallback to the public
Docker Hub on a per-job basis. But users that mix public and private images
have to set `auth_soft_fail=true` for every job using a public image if Docker
auth helpers are used.
* 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
Add more detailed HCL2 docs, mostly lifted from Packer with tweaks for Nomad.
The function docs are basically verbatim taken from Packer with basic string substitutions. I commented out some for_each details as the examples are mostly driven towards Packer resources. I'll iterate on those with better Nomad examples.
Only `change_mode = "restart"` will result in the template environment
variables being updated in the task. Clarify the behavior of the unsupported
options.
* `nomad operator keyring` was missing the general options section
* `nomad operator metrics` was missing a page in the docs entirely
Co-authored-by: Luiz Aoqui <luiz@hashicorp.com>
Create a new "Operating Nomad" section of the docs where we can put reference
material for operators that doesn't quite fit in either configuration file /
command line documentation or a step-by-step Learn Guide. Pre-populate this
with the existing telemetry docs and some links out to the Learn Guide
sections.
* vault secrets named with `-` characters cannot be read by `consul-template`
due to limitations in golang's template rendering engine.
* environment variables are not modified in running tasks if
`change_mode.noop` is set.
The `nomad alloc logs` command does not remove terminal escape sequences for
color from the log outputs of a task. Clarify that the standard `-no-color`
flag, which does apply to Nomad's error responses from `nomad alloc logs`,
does not apply to the log output.
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
Update the default value for `client.bridge_network_subnet` in docs
to match the new value from 99742f2665. Was `172.26.66.0/23`, is
now `172.26.64.0/20`.
Fixes#9316
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.
We recently added documentation disambiguating the terminology of the
allocation/task working directories. This changeset adds an internals document
that describes in more detail exactly what does into the allocation working
directory, how this interacts with the filesystem isolation provided by task
drivers, and how this interacts with features like `artifact` and `template`.
Co-authored-by: Charlie Voiselle <464492+angrycub@users.noreply.github.com>
This is a first draft of HCLv2 docs - I added the details under hcl2 doc with some minimal info highlighting the hcl2 introductions.
As a longer term strategy, we'll want to mimic the Packer HCL docs structure that details all the blocks and allowed expressions/functions in greater details. However, given that the exact functions and templating syntax is still somewhat influx, I opt to push that to another time.
The `template.allow_host_source` configuration was not operable, leading to
the recent security patch in 0.12.6. We forgot to update this piece of the
documentation referring to the correct configuration value.
Beforehand tasks and field replacements did not have access to the
unique ID of their job or its parent. This adds this information as
new environment variables.
* remove event durability
temporarily removing go-memdb event durability until a new strategy is developed on how to best handled increased durability needs
* drop events table schema and state store methods
* fix neweventbuffer invocations
The terms task directory and allocation directory are used throughout the
documentation but these directories are not the same as the `NOMAD_TASK_DIR`
and `NOMAD_ALLOC_DIR` locations. This is confusing when trying to use the
`template` and `artifact` stanzas, especially when trying to use a destination
outside the Nomad-mounted directories for Docker and similar drivers.
This changeset introduces "allocation working directory" to mean the location
on disk where the various directories and artifacts are staged, and "task
working directory" for the task. Clarify how specific task drivers interact
with the task working directory.
Co-authored-by: Charlie Voiselle <464492+angrycub@users.noreply.github.com>
