layout | page_title | description |
---|---|---|
docs |
Commands: job scale |
The job scale command is used to change the count of a Nomad job group.
|
The job scale
command is used to alter the number of running allocations within
a Nomad task group.
nomad job scale [options] <job> <group> <count>
The job scale
commands requires at least two arguments and potentially three
depending on the job specification. The first argument will be the job ID of the
job you wish to scale. If the job contains a single task group, you can omit
including the task group name as the second argument and the command will perform
the required lookup. The final argument is the count that you wish the job task
group to be changed to. The count is the absolute value that will be reflected in
the job specification.
Scale will issue a request to update the matched job and then invoke an interactive monitor that exits automatically once the scheduler has processed the request. It is safe to exit the monitor early using ctrl+c.
When ACLs are enabled, this command requires a token with the
read-job-scaling
and either the scale-job
or submit-job
capabilities
for the job's namespace. The list-jobs
capability is required to run the
command with a job prefix instead of the exact job ID. The read-job
capability is required to monitor the resulting evaluation when -detach
is
not used.
@include 'general_options.mdx'
-
-check-index
: If set, the job is only scaled if the passed job modify index matches the server side version. Ignored if value of zero is passed. If a non-zero value is passed, it ensures that the job is being updated from a known state. -
-detach
: Return immediately instead of entering monitor mode. After the scale command is submitted, a new evaluation ID is printed to the screen, which can be used to examine the evaluation using the eval status command. -
-verbose
: Show full information.
Scale the job with ID "job1" which contains a single task group to a count of 8:
$ nomad job scale job1 8
==> Monitoring evaluation "529cc88e"
Evaluation triggered by job "job1"
Evaluation within deployment: "28a3378f"
Allocation "2a4df8ca" created: node "2f0a2f93", group "group1"
Allocation "b7eefe49" created: node "2f0a2f93", group "group1"
Allocation "bd54a83d" created: node "2f0a2f93", group "group1"
Allocation "fadeaea8" created: node "2f0a2f93", group "group1"
Allocation "4bd1397b" modified: node "2f0a2f93", group "group1"
Allocation "93684511" modified: node "2f0a2f93", group "group1"
Allocation "b409f0a2" modified: node "2f0a2f93", group "group1"
Allocation "18f50054" created: node "2f0a2f93", group "group1"
Evaluation status changed: "pending" -> "complete"
==> Evaluation "529cc88e" finished with status "complete"
Scale the job with ID "job1" which contains a single task group to a count of 8 and return immediately:
$ nomad job scale -detach job1 8
Evaluation ID: b754d6b3-8960-5652-60d8-d47df6eaed13
Scale the job with ID "job1" and the task group "group1" to a count of 8:
$ nomad job scale job1 group1 8
==> Monitoring evaluation "529cc88e"
Evaluation triggered by job "job1"
Evaluation within deployment: "28a3378f"
Allocation "2a4df8ca" created: node "2f0a2f93", group "group1"
Allocation "b7eefe49" created: node "2f0a2f93", group "group1"
Allocation "bd54a83d" created: node "2f0a2f93", group "group1"
Allocation "fadeaea8" created: node "2f0a2f93", group "group1"
Allocation "4bd1397b" modified: node "2f0a2f93", group "group1"
Allocation "93684511" modified: node "2f0a2f93", group "group1"
Allocation "b409f0a2" modified: node "2f0a2f93", group "group1"
Allocation "18f50054" created: node "2f0a2f93", group "group1"
Evaluation status changed: "pending" -> "complete"
==> Evaluation "529cc88e" finished with status "complete"