How we use Ceph-Collect to work with you

When we work on Ceph storage infrastructures, we always ask to run a diagnostic tool first. For running these diagnostics, we have developed a tool, which is called Ceph-Collect. The tool is used to gather information from a Ceph cluster. After it runs, it shows an in dept report about the storage architecture together with […]

How to handle large omap objects

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 built on top of RADOS Ceph stores data in relation to Ceph/Rados objects. Ceph/Rados objects can consist of three major parts: data: bytestream key/value pairs: […]

The Ceph Trafficlight

At PCextreme we have a 700TB Ceph cluster which is used behind our public cloud Aurora Compute which runs Apache CloudStack. Ceph health One of the things we monitor of the Ceph cluster is it’s health. This can be OK, WARN or ERR. It speaks for itself that you always want to see OK, but […]