2011/4/23 Tomas Vondra <t...@fuzzy.cz>: > Hi all, > > I've set up a ring with three nodes to play with. I've tried to > decommision a node, but it seems a different node is decommisioned. > > Example - the nodes are running: > > ~/cassandra $ nodetool -h 10.0.0.1 ring > Address Status State Load Owns Token > 729261389019385599444... > 10.0.0.3 Up Normal 62,28 KB 72,05% 253757231779485488680... > 10.0.0.1 Up Normal 53,67 KB 25,16% 681842499981089716433... > 10.0.0.2 Up Normal 57,92 KB 2,79% 729261389019385599444... > > And then I would like to decommission node with IP 10.0.0.2, so I do this > > ~/cassandra $ nodetool -h 10.0.0.2 decommission > > which for some reason does this: > > ~/cassandra $ nodetool -h 10.0.0.1 ring > Address Status State Load Owns Token > 7292613890193855994... > 10.0.0.3 Up Normal 62,28 KB 72,05% 2537572317794854886... > 10.0.0.1 Up Leaving 53,67 KB 25,16% 6818424999810897164... > 10.0.0.2 Up Normal 57,92 KB 2,79% 7292613890193855994... > > and in the end > > ~/cassandra $ nodetool -h 10.0.0.1 ring > Address Status State Load Owns Token > 7292613890193855994... > 10.0.0.3 Up Normal 62,28 KB 72,05% 2537572317794854886... > 10.0.0.2 Up Normal 57,92 KB 27,95% 7292613890193855994... > > So a different node (with IP 10.0.0.1, not 10.0.0.2) is decommissioned. > > > BTW all the nodes are running on the same machine and are set up using > virtual IPs. Not sure if this is important (I don't think it should). > > regards > Tomas >
Ah ha. JMX binds to it's port on EVERY interface on the system. So since you are not specifying a port it is defaulting to 8080 and decommissioning that one. You probably set the other ones up as 8001 8002 but I am no psychic.
