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restarting nova compute service impact to instances?

asked 2018-02-25 03:23:48 -0500

tonyp12 gravatar image

updated 2018-02-25 03:27:06 -0500

I wish to enable multipath storage access on the compute nodes. i have running instances on the compute nodes already. I need to change nova.conf on the compute nodes for this value:

iscsi_use_multipath = True

Actually this config item is changed to the following:

volume_use_multipath=true

And then I need to restart nova-compute service

systemctl restart openstack-nova-compute.service

Now can this be done safely with running instances? Or do I need to live migrate or shutdown instances first before running this restart?

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answered 2018-02-26 01:19:42 -0500

Deepa gravatar image

If its production ,would suggest to shutdown instances ,enable multipathing (make configuration changes accordingly ),restart cinder and nova services

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Asked: 2018-02-25 03:23:48 -0500

Seen: 334 times

Last updated: Feb 26 '18