Post-Expansion Steps for Extending a Cluster
You must perform post-expansion steps if you added a node to a group containing the CLDB or Zookeeper.
About this task
Restarting Zookeeper Nodes
About this task
One node at a time, stop and restart the Zookeeper service on all Zookeeper nodes, restarting the primary Zookeeper node last. Use the following restart steps.
Restarting All Services for Zookeeper and CLDB
About this task
One node at a time, restart all services on all nodes following the group upgrade order prescribed in Manual Rolling Upgrade Description. You do not need to restart the node that was added. Use the restart steps below.
Restart Steps
Procedure
-
Change to the
root
user (or usesudo
for the following commands). -
Stop Warden.
sudo service mapr-warden stop
-
Stop Zookeeper.
service mapr-zookeeper stop
-
Start the ZooKeeper on nodes where it is installed.
service mapr-zookeeper start
-
On all nodes, start Warden. Example:
service mapr-warden start
-
Over a period of time (depending on the cluster size and other factors) the
cluster comes up automatically. After the CLDB restarts, there is a
15-minute delay before replication resumes, in order to allow all nodes to
register and heartbeat. This delay can be configured using the
config save
command to set thecldb.replication.manager.start.mins
parameter.