Cassandra

Cassandra (Metadata)

Cassandra token ring on the local CVM. Normal output: an even load of keys across the cluster. A newly added node shows as LIMBO while metadata is being redistributed

nodetool -h localhost ring

Same, for all CVMs at once

for i in `svmips` ; do ssh $i "source /etc/profile ; nodetool -h localhost ring" ; done

Column family statistics

nodetool -h 127.0.0.1 cfstats