postgres/upgrade.nomad.hcl

[[ $c := merge .pg.upgrade . -]]
job "[[ .instance ]]-upgrade" {

[[ template "common/job_start.tpl" $c ]]

  type = "batch"

  meta {
    # Force job to be different for each execution
    run_uuid = "${uuidv4()}"
  }

  group "upgrade" {

    volume "data" {
      type            = [[ .pg.volumes.data.type | toJSON ]]
      source          = [[ .pg.volumes.data.source | toJSON ]]
[[- if ne .pg.volumes.data.type "host" ]]
      access_mode     = "single-node-writer"
      attachment_mode = "file-system"
[[- end ]]
      per_alloc       = true
    }

    
    task "[[ .instance ]]-upgrade" {
      driver = [[ $c.nomad.driver | toJSON ]]

      config {
        image           = [[ $c.image | toJSON ]]
        readonly_rootfs = true
      }

      env {
        PG_FROM       = [[ $c.from | toJSON ]]
        PG_TO         = [[ $c.to | toJSON ]]
        PG_DO_UPGRADE = [[ $c.do_upgrade | toJSON ]]
      }

[[ template "common/file_env.tpl" $c ]]

      volume_mount {
        volume      = "data"
        destination = "/data"
      }

[[ template "common/resources.tpl" $c.resources ]]
    }
  }
}