Max length for wsrep_cluster_name, wsrep_node name or wsrep_node_address

[Lukas Grossar]

Could it be possible that there is an inherent limitation on the number of characters in either

• wsrep_cluster_name
• wrep_node_name
• wsrep_node_address

In the Galera Cluster we're running on top of Kubernetes using a Helm Chart we're currently developing we just ran into the issue that we've had the following error message in the logs as soon as the second node tried to join the cluster:

2017-01-19T13:14:19.391156824Z 2017-01-19 13:14:19 140198249330944 [Note] WSREP: gcomm: connecting to group 'joking-grasshopper-mariadb-galera', peer 'joking-grasshopper-mariadb-galera-0.joking-grasshopper-mariadb-galera.default.svc.cluster.local:,joking-grasshopper-mariadb-galera-1.joking-grasshopper-mariadb-galera.default.svc.cluster.local:'

2017-01-19T13:14:19.392613701Z 2017-01-19 13:14:19 140198249330944 [Warning] WSREP: handling gmcast protocol message failed: : 90 (Message too long)

2017-01-19T13:14:19.392650491Z at gcomm/src/gcomm/types.hpp:String():30

2017-01-19T13:14:19.392730472Z 2017-01-19 13:14:19 140198249330944 [Warning] WSREP: handling gmcast protocol message failed: : 90 (Message too long)

2017-01-19T13:14:19.392738473Z at gcomm/src/gcomm/types.hpp:String():30

2017-01-19T13:14:20.893568746Z 2017-01-19 13:14:20 140198249330944 [Warning] WSREP: handling gmcast protocol message failed: : 90 (Message too long)

2017-01-19T13:14:20.893604431Z at gcomm/src/gcomm/types.hpp:String():30

2017-01-19T13:14:21.394890696Z 2017-01-19 13:14:21 140198249330944 [Warning] WSREP: handling gmcast protocol message failed: : 90 (Message too long)

2017-01-19T13:14:21.395010140Z at gcomm/src/gcomm/types.hpp:String():30

2017-01-19T13:14:22.394496691Z 2017-01-19 13:14:22 140198249330944 [Warning] WSREP: handling gmcast protocol message failed: : 90 (Message too long)

2017-01-19T13:14:22.394537982Z at gcomm/src/gcomm/types.hpp:String():30

Could this be related to the fact that helm chose a rather long random name and we ran into an inherent limitation that is not documented?

Thanks for your feedback.

Best regards

Lukas