56 lines
1.8 KiB
Plaintext
56 lines
1.8 KiB
Plaintext
---
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layout: docs
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page_title: scaling Stanza - Job Specification
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sidebar_title: scaling <sup>Beta</sup>
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description: The "scaling" stanza allows specifying scaling policy for a task group
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---
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# `scaling` Stanza
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<Placement groups={['job', 'group']} />
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The `scaling` stanza allows configuring scaling options for a task group, for the purpose
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of supporting external autoscalers like the [Nomad Autoscaler](https://github.com/hashicorp/nomad-autoscaler)
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and scaling via the Nomad UI. This stanza is not supported within jobs of type `system`.
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```hcl
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job "example" {
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datacenters = ["dc1"]
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group "cache" {
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task "redis" {
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driver = "docker"
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config {
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image = "redis:3.2"
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}
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}
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scaling {
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enabled = true
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min = 0
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max = 10
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policy {
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}
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}
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}
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}
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```
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## `scaling` Parameters
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- `min` - <code>(int: nil)</code> - The minimum acceptable count for the task group.
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This should be honored by the external autoscaler. It will also be honored by Nomad
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during job updates and scaling operations. Defaults to the specified task group [count][].
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- `max` - <code>(int: <required>)</code> - The maximum acceptable count for the task group.
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This should be honored by the external autoscaler. It will also be honored by Nomad
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during job updates and scaling operations.
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- `enabled` - <code>(bool: false)</code> - Whether the scaling policy is enabled.
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This is intended to allow temporarily disabling an autoscaling policy, and should be
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honored by the external autoscaler.
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- `policy` - <code>(map<string|...>: nil)</code> - The autoscaling policy. This is
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opaque to Nomad, consumed and parsed only by the external autoscaler. Therefore,
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its contents are specific to the autoscaler; see autoscaler documentation.
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[count]: /docs/job-specification/group/#count 'Nomad Task Group specification'
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