Announcement

Announcement Module
Collapse
No announcement yet.

How update wsrep_cluster_address without restaring noded ?

Page Title Module
Move Remove Collapse
X
Conversation Detail Module
Collapse
  • Filter
  • Time
  • Show
Clear All
new posts

  • How update wsrep_cluster_address without restaring noded ?

    Hi !

    I bootstrap new cluster on CentOS with bootstrap-pxc option of init.d script. Unfortunately in my.cnf was defined IP just of this node, after starting other nodes (where i defined all nodes IPs in my.cnf) when i try SHOW VARIABLES LIKE "wsrep_cluster_address" i got

    on bootstraped node

    Code:
    +-----------------------+------------------------+
    | Variable_name         | Value                  |
    +-----------------------+------------------------+
    | wsrep_cluster_address | gcomm:// |
    +-----------------------+------------------------+
    that right, but on other nodes i got
    Code:
    +-----------------------+------------------------+
    | Variable_name         | Value                  |
    +-----------------------+------------------------+
    | wsrep_cluster_address | gcomm://ip_of_bootstrap_node:4567 |
    +-----------------------+------------------------+
    so just one node ip and no IPs of other 2 nodes.

    Is it possible update this variable to state with all nodes listed in Value without cluster restart ?

    Thanks.



  • #2
    Hi,

    wsrep_cluster_address is used when node is (re)started, I think it's ok just to rewrite my.cnf.

    Comment


    • #3
      Ok i can't understand what is source for this variable, because in my.cnf on non-bootstraped nodes wsrep_cluster_address was defined with all nodes in cluster IPs, but after start they didn't take it and as i wrote early variable contain just one IP. And cluster now in use, so i can't restart nodes without understand how i must improve situations, if possible, without cluster or nodes restart.
      Last edited by spirtt0; 07-24-2014, 09:16 AM.

      Comment


      • #4
        thank you for your reply.

        I'm checking the group communication initialization code,
        especially whether wsrep_cluster_address is the same as peer node address seen below

        140728 12:00:02 [Note] WSREP: gcomm: connecting to group 'galera_cluster', peer 'xxx:'

        * wsrep_cluster_address is dynamic variable, so you may change it online by set global ... ( but it seems there's no meaning to change )
        * please wait one more day until I confirm code of variable update when group communication established.

        Comment


        • #5
          I tried again and galera_cluster_address seems to be equal to the address which is written in my.cnf when the node is started.

          I also tested when the node is restarted and node is started by SST.

          thank you.

          Comment

          Working...
          X