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Every once in a while a customer will ask me what to do with these messages: health: HEALTH_WARN1 large omap objects First lets see what this means: Ceph services are…
For a Ceph cluster I have two Juniper QFX5100 switches running as a Virtual Chassis. This Virtual Chassis is currently only performing L2 forwarding, but I want to move this…
Prior to Ceph Luminous you could only set the noout flag cluster-wide which means that none of your OSDs will be marked as out. On large(r) cluster this isn’t always…
Sometimes you want to test if changes you are about to make to a CRUSH map will cause data to move or not. In this case I wanted to change…
The Ceph Mgr dashboard plugin allows for an easy dashboard which can show you how your Ceph cluster is performing. In certain situations you can’t contact the Mgr daemons directly…
So you might wonder: Why do I need to make a backup of my Ceph monitors? I have multiple monitors.…
read moreAs of Ceph version 0.67 (Dumpling) the Ceph Object Gateway aka RADOS Gateway supports regions. This allows you to create…
read moreWhen you want to use Ceph as Primary Storage in Apache CloudStack you need a recent version of libvirt with…
read moreOne of the unique features of Ceph is that it can be build without any Single Point of Failure. No…
read moreAbout 1 hour ago the new storage subsystem got merged into the master branch of CloudStack. That is wonderful news…
read moreAs we are nearing the CloudStack 4.0 release I figured it was time I’d write something about the Ceph integration…
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