iscsi cinder resilience for instances

asked 2018-01-17 07:04:55 -0500

tony.pearce gravatar image

Hopefully someone can point me in the right direction. I have tripleo openstack installed using Cinder and iscsi storage. OS is centos 7. Is there anything special I need to do in terms of bringing up multipathd? Any rules I need to follow specific for openstack? Or should I just follow centos and vendor guide for centos?

I am asking because I'm getting some strange experiences where the 2nd path doesn't appear to be functional.

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Please run this command and show output "iscsiadm -m node -o show"

TijoV gravatar imageTijoV ( 2018-01-17 07:26:03 -0500 )edit

Thanks for the tip. In my works to get this working I had somehow affected the permissions on /etc/iscsi/initiatorname and so the iscsid service wouldnt start. I've since resolved this but now there's no iscsi connections. I already removed the config files in /var/lib/iscsi/ but they are not

tony.pearce gravatar imagetony.pearce ( 2018-01-17 07:59:47 -0500 )edit

being created automatically. I've tried removing the iscsi backend configuration from /etc/cinder/cinder.conf and restarting services; then putting the config back in again but the config is not coming back. Any ideas how to get the config auto-created again? :)

tony.pearce gravatar imagetony.pearce ( 2018-01-17 08:00:38 -0500 )edit

I understand, when you restart the service with the changes you made in the config file /etc/cinder/cinder.conf it will not reflect. I have installed Openstack using juju and if i need to make any changes for cinder config.

TijoV gravatar imageTijoV ( 2018-01-18 01:08:26 -0500 )edit

I need to edit cd /var/lib/juju/agents/unit-cinder-0/charm/templates/ocata/cinder.conf so that the changes reflect in cinder.conf. and when i restart the service it works with the changes made.

TijoV gravatar imageTijoV ( 2018-01-18 01:10:18 -0500 )edit