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2

Is it possible to deploy a juju service to multiple specific machines?

rated 0 times [ 2] [ 0] / answers: 1 / hits: 1177 / 1 Year ago, wed, december 21, 2022, 1:11:07

i am trying to deploy HA ceph like shown in OpenstackHA But i wanted to deploy Ceph MON and Ceph OSD on same 3 machines. So in order to that, my 1st cmd will be,

juju deploy --config local.yaml -n 3 local:ceph

and 2nd cmd, i am wondering how i should do, coz i want to deploy CEPH-OSD to same machines.
something like this,

juju deploy --force-machine 0 --config ceph.yaml local:ceph-osd

juju deploy --force-machine 1 --config ceph.yaml local:ceph-osd

juju deploy --force-machine 2 --config ceph.yaml local:ceph-osd

or can it be like this,

juju deploy --force-machine 0,1,2 --config ceph.yaml -n 3 local:ceph-osd

I have not tried these command actually and not good aware of cmd syntax also, thats why i am asking it here

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3 Years ago

answered 1 Year ago brailloni · Accepted Answer

$ juju add-unit -h

usage: juju add-unit [options] <service name>

purpose: add a service unit



options:

-e, --environment (= "local")

    juju environment to operate in

-n, --num-units  (= 1)

    number of service units to add

--to (= "")

    the machine or container to deploy the unit in, bypasses constraints



Service units can be added to a specific machine using the --to argument.

Examples:

 juju add-unit mysql --to 23       (Add unit to machine 23)

 juju add-unit mysql --to 24/lxc/3 (Add unit to lxc container 3 on host machine 24)

 juju add-unit mysql --to lxc:25   (Add unit to a new lxc container on host machine 25)