October 2018
Beginner to intermediate
348 pages
10h
English
Scaling down by removing a live node (that is, a node which is still functioning) can be accomplished using the nodetool decommission command. Decommissioning a live node begins by putting the node in a status of UL, for up and leaving. This prevents the node from being included in serving queries by a coordinator.
Additionally, the token range is adjusted for all nodes in the data center. Data on the node is then streamed to the nodes that will be responsible for the data. The command begins the decommissioning process on the node specified by the host (-h) parameter, or runs on the current node if none is specified:
nodetool decommission -h 192.168.0.101
Or we can use as follows:
nodetool decommission
Once the command ...