I'm creating some scripts for some Cassandra clusters I operate. Some of these scripts need a list of nodes that are part of the cluster.
nodetool status will print a list of the nodes and their current state, but it prints out more information than I need. For example:
$ nodetool status mykeyspace Datacenter: datacenter1 ======================= Status=Up/Down |/ State=Normal/Leaving/Joining/Moving -- Address Load Tokens Owns Host ID Rack UN 10.11.12.13 47.66 KB 1 33.3% aaa1b7c1-6049-4a08-ad3e-3697a0e30e10 rack1 UN 10.11.12.14 47.67 KB 1 33.3% 1848c369-4306-4874-afdf-5c1e95b8732e rack1 UN 10.11.12.15 47.67 KB 1 33.3% 49578bf1-728f-438d-b1c1-d8dd644b6f7f rack1
The list of the nodes should be IPs only ( hostnames aren't necessary) and I'd like clean output like the following:
10.11.12.13 10.11.12.14 10.11.12.15
What is the best/simplest way to do this?
I'll provide my current method below for doing this, but if there's a better way I'd love to see it. Even if it doesn't use the