DataStax agents must be installed on every managed node in a cluster and are necessary
to perform most of the functionality within OpsCenter.
DataStax agents must be installed on every managed node in a cluster and are necessary to
perform most of the functionality within OpsCenter.
After adding a
cluster, OpsCenter will determine whether agents are already properly installed and
configured. If they are not, you will be prompted to check the status of the agents and
potentially install them from the Agents tab.
Prerequisites
- Root or sudo access to the machines where the agents will be
installed.
- JMX connectivity is enabled on each node in the cluster.
- Either you configured
the SSH port, or accepted the default SSH port (22) for node-agent
communication.
- DataStax
Enterprise 4.7 or greater.
Procedure
-
Install OpsCenter.
-
Start your DataStax Enterprise cluster and the OpsCenter daemon.
-
Open a browser window and go to the OpsCenter URL at
http://opscenter_host:8888
, where
opscenter_host is the IP or hostname of the OpsCenter machine.
A dialog prompts you to select a cluster option.
-
Click Manage Existing Cluster and Get
Started.
The
Connect to Existing Cluster dialog appears.
-
Add one or more hostnames or IP addresses of the nodes in the cluster. For best
results, use private IP addresses.
-
Click Next.
The Set Up Agents dialog appears.
-
Install or start agents automatically is selected by default.
Click Next.
If your environment requires manual installation of agents, click
Install
agents manually. Click the link to access the instructions for
manually installing
agents.
The Install Agents - Credentials dialog appears.
-
Enter SSH credentials to connect to your nodes:
- Required:
Enter a Username. The user must have root or sudo
privileges.
- Optional:
A sudo password can be entered in the Password box.
- Optional:
Enter a Private Key.
No information entered in the Install Agents - Credentials dialog is saved or
stored.
-
Click Install. The Agents tab opens and displays
the progress of the agent installation.
Results
DataStax agents have been deployed and configured for each managed node in the DataStax
Enterprise cluster.
If you were unable to install the agents through the OpsCenter UI, follow the instructions
to manually install the
agents.