9d85195361
* Fix links to ACL guides * Managing Nomad guide links; links in jsx pages * job updates guide URLS * node-drain guide URLS * outage recovery guide links * fix guide links - sentinel * fix guide links - namespaces * fix guide links - quotas * fix guide links - autopilot * more guide links. * more guide links - continued. * Updating redirects for learn * Getting Started * Load Balancing Guides * update redirects for ui guide * Consolidate spark redirects to point to GH repo * operating job update part 1 * finish operating job links; operations guides links. * finish guide redirects * coalesce EOL redirects for spark guides. * one last link * Checked links and found a few more stray links * Found more .htmls * Fixup links for new HC websites * Post-merge fixups * linkcheck caught missing ids
62 lines
2.1 KiB
Plaintext
62 lines
2.1 KiB
Plaintext
---
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layout: docs
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page_title: volume Stanza - Job Specification
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sidebar_title: volume
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description: >-
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The "volume" stanza allows the group to specify that it requires a given
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volume from the cluster. Nomad will automatically handle ensuring that the
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volume is available and mounted into the task.
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---
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# `volume` Stanza
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<Placement groups={['job', 'group', 'volume']} />
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The `volume` stanza allows the group to specify that it requires a
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given volume from the cluster.
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The key of the stanza is the name of the volume as it will be exposed
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to task configuration.
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```hcl
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job "docs" {
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group "example" {
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volume "certs" {
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type = "host"
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source = "ca-certificates"
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read_only = true
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}
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}
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}
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```
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The Nomad server will ensure that the allocations are only scheduled
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on hosts that have a set of volumes that meet the criteria specified
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in the `volume` stanzas. These may be [host volumes][host_volume]
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configured on the client, or [CSI volumes][csi_volume] dynamically
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mounted by [CSI plugins][csi_plugin].
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The Nomad client will make the volumes available to tasks according to
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the [volume_mount][volume_mount] stanza in the `task` configuration.
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## `volume` Parameters
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- `type` `(string: "")` - Specifies the type of a given volume. The
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valid volume types are `"host"` and `"csi"`.
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- `source` `(string: <required>)` - The name of the volume to
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request. When using `host_volume`'s this should match the published
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name of the host volume. When using `csi` volumes, this should match
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the ID of the registered volume.
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- `read_only` `(bool: false)` - Specifies that the group only requires
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read only access to a volume and is used as the default value for
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the `volume_mount -> read_only` configuration. This value is also
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used for validating `host_volume` ACLs and for scheduling when a
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matching `host_volume` requires `read_only` usage.
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[volume_mount]: /docs/job-specification/volume_mount 'Nomad volume_mount Job Specification'
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[host_volume]: /docs/configuration/client#host_volume-stanza
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[csi_volume]: /docs/commands/volume/register
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[csi_plugin]: /docs/job-specification/csi_plugin
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