» Command: job dispatch

The job dispatch command is used to revert a job to a prior version of the job. The available versions to revert to can be found using job history command.

» Usage

nomad job revert [options] <job> <version>

The job revert command requires two inputs, the job ID and the version of that job to revert to.

» 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.

• -no-color: Disables colored command output.

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

» Revert Options

• -detach: Return immediately instead of monitoring. A new evaluation ID will be output, which can be used to examine the evaluation using the eval-status command

• -verbose: Show full information.

» Examples

Revert to an older version of a job:

$ nomad job history -p example
Version     = 1
Stable      = false
Submit Date = 07/25/17 21:27:30 UTC
Diff        =
+/- Job: "example"
+/- Task Group: "cache"
  +/- Task: "redis"
    +/- Config {
      +/- image:           "redis:3.2" => "redis:4.0"
          port_map[0][db]: "6379"
        }

Version     = 0
Stable      = false
Submit Date = 07/25/17 21:27:18 UTC

$ nomad job revert example 0
==> Monitoring evaluation "faff5c30"
    Evaluation triggered by job "example"
    Evaluation within deployment: "e17c8592"
    Allocation "4ed0ca3b" modified: node "e8a2243d", group "cache"
    Evaluation status changed: "pending" -> "complete"
==> Evaluation "faff5c30" finished with status "complete"

$ nomad job history -p example
Version     = 2
Stable      = true
Submit Date = 07/25/17 21:27:43 UTC
Diff        =
+/- Job: "example"
+/- Task Group: "cache"
  +/- Task: "redis"
    +/- Config {
      +/- image:           "redis:4.0" => "redis:3.2"
          port_map[0][db]: "6379"
        }

Version     = 1
Stable      = false
Submit Date = 07/25/17 21:27:30 UTC
Diff        =
+/- Job: "example"
+/- Task Group: "cache"
  +/- Task: "redis"
    +/- Config {
      +/- image:           "redis:3.2" => "redis:4.0"
          port_map[0][db]: "6379"
        }

Version     = 0
Stable      = false
Submit Date = 07/25/17 21:27:18 UTC