Starting Up a Cluster

Complete the following steps to start up a cluster that was previously shut down:

If the cluster nodes are not running, start them.
Change to the root user (or use sudo for the following commands).
Start the ZooKeeper on nodes where it is installed.
```
# service mapr-zookeeper start
```
On all nodes, start Warden.
```
# 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 the cldb.replication.manager.start.mins parameter.