From f411f0c0fbf69d1e34744a126dbe0ff4c630b631 Mon Sep 17 00:00:00 2001 From: Tim Gross Date: Fri, 16 Jun 2023 10:37:47 -0400 Subject: [PATCH] docs: node pool specification (#17553) --- .../docs/other-specifications/node-pool.mdx | 76 +++++++++++++++++++ website/data/docs-nav-data.json | 4 + 2 files changed, 80 insertions(+) create mode 100644 website/content/docs/other-specifications/node-pool.mdx diff --git a/website/content/docs/other-specifications/node-pool.mdx b/website/content/docs/other-specifications/node-pool.mdx new file mode 100644 index 000000000..75833cbff --- /dev/null +++ b/website/content/docs/other-specifications/node-pool.mdx @@ -0,0 +1,76 @@ +--- +layout: docs +page_title: Nomad Node Pool Specification +description: Learn about Nomad's Node Pool specification. +--- + +# Nomad Node Pool Specification + +Nomad node pools may be specified as HCL files and submitted by the [`nomad node +pool apply`][pool-apply] CLI command. + +Unlike [Job specifications][jobspecs], Nomad node pool specifications do *not* +support HCL2 features like functions. + +Example node pool specification generated by [`nomad node pool +init`][pool-init]: + +```hcl +node_pool "example" { + + description = "Example node pool" + + # meta is optional metadata on the node pool, defined as key-value pairs. + # The scheduler does not use node pool metadata as part of scheduling. + meta { + environment = "prod" + owner = "sre" + } + + # The scheduler configuration options specific to this node pool. This block + # supports a subset of the fields supported in the global scheduler + # configuration as described at: + # https://developer.hashicorp.com/nomad/docs/commands/operator/scheduler/set-config + # + # * scheduler_algorithm is the scheduling algorithm to use for the pool. + # If not defined, the global cluster scheduling algorithm is used. + # + # Available only in Nomad Enterprise. + + # scheduler_configuration { + # scheduler_algorithm = "spread" + # } +} +``` + +Example usage if the above is in a file named `pool.nomad.hcl`: + +```shell-session +$ nomad node pool apply ./pool.nomad.hcl +Successfully applied node pool "example"! +``` + +## Node Pool Specification Parameters + +- `description` `(string: )` - Sets a human readable description for + the node pool. + +- `meta` `(map[string]string: )` - Sets optional metadata on the node + pool, defined as key-value pairs. The scheduler does not use node pool metadat + as part of scheduling. + +- `scheduler_configuration` ([SchedulerConfig][sched-config]: + nil) - Sets scheduler configuration options specific to the node + pool. If not defined, the global cluster scheduling algorithm is + used. Available only in Nomad Enterprise. + +### Scheduler Configuration Parameters + +- `scheduler_algorithm` `(string: )` - The [scheduler algorithm][] + used for this node pool. Must be one of `binpack` or `spread`. + +[pool-apply]: /nomad/docs/commands/node-pool/apply +[jobspecs]: /nomad/docs/job-specification +[pool-init]: /nomad/docs/commands/node-pool/init +[sched-config]: #scheduler-configuration-parameters +[scheduler algorithm]: /nomad/api-docs/operator/scheduler#scheduleralgorithm-1 diff --git a/website/data/docs-nav-data.json b/website/data/docs-nav-data.json index f0617a41c..d0e08f6b1 100644 --- a/website/data/docs-nav-data.json +++ b/website/data/docs-nav-data.json @@ -1744,6 +1744,10 @@ "title": "ACL Policy", "path": "other-specifications/acl-policy" }, + { + "title": "Node Pool", + "path": "other-specifications/node-pool" + }, { "title": "Variables", "path": "other-specifications/variables"