Missing wsrep variables in mysql / percona / galera cluster
After starting up the whole cluster, I'm missing some of the wsrep variables.


I'm not sure if this is the issue, but 
wsrep_local_state_comment is not a wsrep variable, it's a status variable. Which means you have to use SHOW GLOBAL STATUS LIKE ... rather than SHOW GLOBAL VARIABLES LIKE ..., i.e. in this case: 

SHOW GLOBAL STATUS LIKE 'wsrep_local_state_comment';


And more generally:

SHOW GLOBAL STATUS LIKE 'wsrep%';