Decommissioning or permanently removing a tablet server from a cluster
Starting with Kudu 1.12, the Kudu rebalancer tool can be used to decommission a tablet
server by supplying the
Ensure the cluster is in good health using
Put the tablet server into a maintenance mode by using the
kudu tserver state enter_maintenancetool.
kudu cluster rebalancetool, supplying the
--ignored_tserversargument with the UUIDs of the tablet servers to be decommissioned, and the
Wait for the moves to complete and for
ksckto show the cluster in a healthy state.
- The decommissioned tablet server can be brought offline.
To completely remove it from the cluster so
ksckshows the cluster as completely healthy, restart the masters.If you have only one master in your deployment, this may cause cluster downtime. In a multi-master deployment, restart the masters in sequence to avoid cluster downtime.