Home
6.1 Installation
This section contains information about installing and upgrading MapR software. It also contains information about how to migrate data and applications from an Apache Hadoop cluster to a MapR cluster.
Installing MapR and/or MapR Ecosystem Components
Describes how to install MapR software and ecosystem components with the MapR Installer or without the MapR Installer.
Installing without the MapR Installer
Describes how to install MapR software and ecosystem components manually.
Step 7: Bring up the Cluster
Before you can install metrics monitoring, log monitoring, or ecosystem components, you must enable the cluster by starting ZooKeeper and Warden and verifying the cluster installation status.
Starting Zookeeper and Warden
Starting ZooKeeper and Warden brings up the cluster.

Starting Zookeeper and Warden

Starting ZooKeeper and Warden brings up the cluster.

Depending on the options that you specified when running configure.sh, Zookeeper and Warden might already be started.

Note: For a DARE-enabled cluster, you can skip this step because you already started the cluster in order to configure disk storage.

To check that Zookeeper is started, use this command (Zookeeper nodes only):

service mapr-zookeeper status

To check that Warden is started:

service mapr-warden status

To start the cluster if Zookeeper and Warden are not started:

Start ZooKeeper on all nodes where it is installed, by issuing the following command:
```
service mapr-zookeeper start
```
Start Warden on all nodes:
```
service mapr-warden start
```