Chapter 14. --cluster-nodes

Artur Hefczyc <> v2.0, June 2014: Reformatted for AsciiDoc. :toc: :numbered: :website: :Date: 2013-02-09 21:30

Default value: none

Example: --cluster-nodes = node1.domain,node2.domain,node3.domain

Possible values: a comma separated list of hostnames.

Description: The property is used to specify a list of cluster nodes running on your installation. The node is a full DNS name of the machine running the node. Please note the proper DNS configuration is critical for the cluster to work correctly. Make sure the hostname command returns a full DNS name on each cluster node. Nodes don’t have to be in the same network although good network connectivity is also a critical element for an effective cluster performance.,,

All cluster nodes must be connected with each other to maintain user session synchronization and exchange packets between users connected to different nodes. Therefore each cluster node opens a cluster port on which it is listening for connections from different cluster nodes. As there is only one connection between each two nodes the Tigase server has to decide which nodes connects and which has to accept the connection. If you put the same list of cluster nodes in the configuration for all nodes this is not a problem. The Tigase server has a way to find it out and void conflicts. If you however want to add a new node later on, without restarting and changing configuration on old nodes there is no way the old nodes will try to establish a connection to the new node they don’t know of. To solve this particular case the next parameter is used.

Available since: 4.0.0