Re: how to use mstart clusters for multi-cluster development

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Thank you so much Deepika.. I forgot to paste the issue there while I was typing the mail. my bad.

The issue I ran into was this btw.

./bin/ceph dashboard set-rgw-credentials
unable to get monitor info from DNS SRV with service name: ceph-mon
2022-06-26T17:43:19.763+0000 7f778bfff700 -1 failed for service _ceph-mon._tcp
2022-06-26T17:43:19.763+0000 7f778bfff700 -1 monclient: get_monmap_and_config cannot identify monitors to contact
[errno 2] RADOS object not found (error connecting to the cluster)

I didn't know about mrun script, but that helps. I'll try it out.

Regards!

On Mon, Jun 27, 2022 at 12:06 PM Deepika Upadhyay <dupadhya@xxxxxxxxxx> wrote:
hey Nizam,

Not sure what issue you ran into, but incase you want to use mstart scripts for setting up rbd-mirroring,

you can use to setup site-a and site-b clusters:
mon=1 osd=1 mds=0 ../src/mstart.sh site-a --short -n --without-dashboard
mon=1 osd=1 mds=0 ../src/mstart.sh site-b --short -n --without-dashboard

after cluster setup you should be able to run ceph command using mrun script like:

`../src/mrun site-a ceph -s`
`../src/mrun site-b ceph -s`

feel free to ping if you have any specific doubt regarding rbd-mirror multicluster setup.

Thanks!

On Sun, Jun 26, 2022 at 11:26 PM Nizamudeen A <nia@xxxxxxxxxx> wrote:
Hi all,

Recently I've been trying to use the mstart script to start the ceph development cluster. But I ran into this issue when I am issuing any ceph commands like we do for the vstart clusters. I am not sure how to run the ceph commands here. Does any one use mstart clusters here for multi-cluster development?

Also It would be great to know which is the easiest way to start a multi-cluster dev environment within the same machine, if I want to play around with rbd-mirroring. 

Thanks in advance. Regards,
--

Nizamudeen A

Software Engineer

Red Hat

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