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nomad volume status command reference

The volume status command displays status information for Container Storage Interface (CSI) volumes.

Usage

nomad volume status [options] [volume]

This command accepts an optional volume ID or prefix as the sole argument. If there is an exact match based on the provided volume ID or prefix, then information about the specific volume is queried and displayed. Otherwise, a list of matching volumes and information will be displayed.

If the ID is omitted, the command lists out all of the existing volumes and a few of the most useful status fields for each.

When ACLs are enabled, this command requires a token with the csi-read-volume and csi-list-volumes capability for the volume's namespace.

General options

  • -address=<addr>: The address of the Nomad server. Overrides the NOMAD_ADDR environment variable if set. Defaults to http://127.0.0.1:4646.

  • -region=<region>: The region of the Nomad server to forward commands to. Overrides the NOMAD_REGION environment variable if set. Defaults to the Agent's local region.

  • -namespace=<namespace>: The target namespace for queries and actions bound to a namespace. Overrides the NOMAD_NAMESPACE environment variable if set. If set to '*', subcommands which support this functionality query all namespaces authorized to user. Defaults to the "default" namespace.

  • -no-color: Disables colored command output. Alternatively, NOMAD_CLI_NO_COLOR may be set. This option takes precedence over -force-color.

  • -force-color: Forces colored command output. This can be used in cases where the usual terminal detection fails. Alternatively, NOMAD_CLI_FORCE_COLOR may be set. This option has no effect if -no-color is also used.

  • -ca-cert=<path>: Path to a PEM encoded CA cert file to use to verify the Nomad server SSL certificate. Overrides the NOMAD_CACERT environment variable if set.

  • -ca-path=<path>: Path to a directory of PEM encoded CA cert files to verify the Nomad server SSL certificate. If both -ca-cert and -ca-path are specified, -ca-cert is used. Overrides the NOMAD_CAPATH environment variable if set.

  • -client-cert=<path>: Path to a PEM encoded client certificate for TLS authentication to the Nomad server. Must also specify -client-key. Overrides the NOMAD_CLIENT_CERT environment variable if set.

  • -client-key=<path>: Path to an unencrypted PEM encoded private key matching the client certificate from -client-cert. Overrides the NOMAD_CLIENT_KEY environment variable if set.

  • -tls-server-name=<value>: The server name to use as the SNI host when connecting via TLS. Overrides the NOMAD_TLS_SERVER_NAME environment variable if set.

  • -tls-skip-verify: Do not verify TLS certificate. This is highly not recommended. Verification will also be skipped if NOMAD_SKIP_VERIFY is set.

  • -token: The SecretID of an ACL token to use to authenticate API requests with. Overrides the NOMAD_TOKEN environment variable if set.

Status options

  • -type: Display only volumes of a particular type. Currently only the csi type is supported, so this option can be omitted when querying the status of CSI volumes.

  • -plugin_id: Display only volumes managed by a particular CSI plugin.

  • -short: Display short output. Used only when a single volume is being queried. Drops verbose volume allocation data from the output.

  • -verbose: Show full information. Allocation create and modify times are shown in yyyy/mm/dd hh:mm:ss format. When listing volumes, this flag will cause Nomad to query the storage provider for volumes that are known to the storage provider but not yet registered with Nomad. This may include volumes that have been created by the volume create command that are not yet schedulable.

Examples

List of all volumes:

$ nomad volume [-type csi] status
ID            Name      Namespace  Plugin ID  Schedulable  Access Mode
ebs_prod_db1  database  default    ebs-prod   true         single-node-writer

List of all volumes, with external provider info:

$ nomad volume [-type csi] status -verbose
ID            Name      Namespace  Plugin ID  Schedulable  Access Mode
ebs_prod_db1  database  default    ebs-prod   true         single-node-writer

External ID   Condition                         Nodes
vol-abcedf    OK                                i-abc123f2,i-14a12df13
vol-cd46df    Abnormal (provider message here)  i-14a12df13

Short view of a specific volume:

$ nomad volume status [-verbose] [-plugin=ebs-prod] ebs_prod_db1
ID                   = ebs_prod_db1
Name                 = database
Type                 = csi
External ID          = vol-23452345
Plugin ID            = ebs-prod
Provider             = aws.ebs
Version              = 1.0.1
Capacity             = 100 GiB
Schedulable          = true
Controllers Healthy  = 1
Controllers Expected = 1
Nodes Healthy        = 1
Nodes Expected       = 1
Access Mode          = single-node-writer
Attachment Mode      = file-system
Mount options        = fs_type: ext4 flags: ro
Namespace            = default

Full status information of a volume:

$ nomad volume status [-verbose] [-plugin=ebs-prod] ebs_prod_db1
ID                   = ebs_prod_db1
Name                 = database
Type                 = csi
External ID          = vol-23452345
Plugin ID            = ebs-prod
Provider             = aws.ebs
Version              = 1.0.1
Capacity             = 100 GiB
Schedulable          = true
Controllers Healthy  = 1
Controllers Expected = 1
Nodes Healthy        = 1
Nodes Expected       = 1
Access Mode          = single-node-writer
Attachment Mode      = file-system
Mount options        = fs_type: ext4 flags: ro
Namespace            = default

Allocations
ID        Node ID   Access Mode   Task Group  Version  Desired  [...]
b00fa322  28be17d5  write         csi         0        run