March 2019
Intermediate to advanced
356 pages
10h 7m
English
Content preview from Mastering Ceph - Second Edition
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Cluster capacity and usage
The following two queries show the total capacity of bytes in the cluster and the number of bytes used. They can be used to generate a pie chart in Grafana to show the percentage of used space. Note that these counters show the raw capacity before replication:
maxSeries(collectd.mon*.ceph.mon.mon*.ceph_bytes.Cluster.osdBytes)maxSeries(collectd.mon*.ceph.mon.mon*.ceph_bytes.Cluster.osdBytesUsed)
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.