RHEV 3.0 Manager on KVM Host(s)
Would it make any sense to run the RHEV Manager (RHEV-M) on top of a KVM VM in a production environment? The notion of having RHEV-M on a VM that could easily be backed up in its entirety, or moved around to other hardware, seems appealing. What about running that VM on a cluster of two KVM hosts on shared storage, so that it could be live migrated? The official documentation at (http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Virtualization/3.0/html/Installation_Guide/index.html) is curiously silent on this topic.
Has anyone tried this? Are there any white papers -- or even rough notes -- available as a reference?
Thanks,
Daniel
Responses
Yes, you can run RHEV-M as a KVM vm with cluster suite for high availability purpose. You need to use a GFS filesystem shared to both nodes or use lvm. You can refer https://access.redhat.com/kb/docs/DOC-57628 for more details.
For backup purpsoe, you can simply copy the guest image and configuration file to a remote server after shutting down the vm on a weekly basis. Also take a daily backup of the rhevm database and keep it in a remote location.
If you have to restore if the vm gets corrupted, you need to restore the last good backup image and then restore the latest database backup.
There are a number of different approaches one could utilize.
Here are 2 that immediately come to mind:
Here is a Red Hat whitepaper on RHEV-M HA
https://access.redhat.com/knowledge/articles/216973
Here is a Red Hat whitepaper on RHEV-M DR
I am excited for the 3.1 GA to be announced (Dec 5th) to see how GlusterFS (now Red Hat Storage) will make the clustering of the VM on a KVM host an easier proposition.
I was able to create 2 KVM guests, and cluster them using Luci/Ricci (like in the doc) and use an iSCSI data store as my shared storage.
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