interval to do garbage collection of nodes has already deactivated.

expired time of master key.

interval to try to lock the slot to be the master.

once a node is no longer active, it will be removed from the cluster.

interval to vote the ips of the nodes.

once a plugin is no longer active, it will be removed from the cluster.

interval to schedule the plugins.

interval to schedule the plugins.

interval to update the status of the node.