The Cloudera Manager Agent is responsible for starting and stopping processes,
unpacking configurations, triggering installations, and monitoring all hosts in a cluster. You
can install the Cloudera Manager agent manually on all hosts, or Cloudera Manager can install
the Agents in a later step. To use Cloudera Manager to install the agents, skip this section.
To install the Cloudera Manager Agent packages manually, do the following on every
cluster host (including those that will run one or more of the Cloudera Management Service
roles: Service Monitor, Activity Monitor, Event Server, Alert Publisher, or Reports
Manager):
-
Use one of the following commands to install the Cloudera Manager Agent packages:
| OS |
Command |
| RHEL, if you have a yum repo configured: |
$ sudo yum install cloudera-manager-agent cloudera-manager-daemons
|
| Ubuntu |
$ sudo apt-get install cloudera-manager-agent cloudera-manager-daemons
|
- On every cluster host, configure the Cloudera Manager Agent to point to the
Cloudera Manager Server by setting the following properties in the
/etc/cloudera-scm-agent/config.ini configuration file:
| Property |
Description |
server_host |
Name of the host where Cloudera Manager Server is running. |
server_port |
Port on the host where Cloudera Manager Server is running. |
- Start the Agents by running the following command on all
hosts:
sudo systemctl start cloudera-scm-agent
If the agent starts without errors, no response displays.
When the Agent starts, it contacts the Cloudera Manager Server. If
communication fails between a Cloudera Manager Agent and Cloudera
Manager Server, see Troubleshooting Installation
Problems. When the Agent hosts reboot,
cloudera-scm-agent starts automatically.
