Manually deploy DataStax Agents from RPM

It is preferable to install DataStax Agents automatically. However, when automatic DataStax Agent installation is unsuccessful, manually install them.

This procedure uses a Yum package to manually install DataStax Agents on Linux nodes running DataStax Enterprise (DSE) clusters. Use this procedure if your DSE instance was also installed with a Yum package. Otherwise, choose one of the following procedure types that does match:

Prerequisites

Root or sudo access to the machines where the DataStax Agents are installed.
The DSE cluster is up and running.
OpsCenter is installed and configured.
JMX connectivity is enabled on each node in the cluster.

opscenterd.conf

The location of the opscenterd.conf file depends on the type of installation:

Package installations: /etc/opscenter/opscenterd.conf
Tarball installations: install_location/conf/opscenterd.conf

address.yaml

The location of the address.yaml file depends on the type of installation:

Package installations: /var/lib/datastax-agent/conf/address.yaml
Tarball installations: install_location/conf/address.yaml

Procedure

End User License Agreement (EULA). By downloading this DataStax product, you agree to the terms of the EULA.

In a terminal:

Add the DataStax Yum repository in the /etc/yum.repos.d/datastax.repo file.
```
[opscenter]
name = {company} Repository
baseurl = https://rpm.datastax.com/enterprise
enabled = 1
gpgcheck = 0
```
Set gpgcheck=1 to perform a GPG signature check.
If you have enabled signature verification (gpgcheck=1), import the repository key:
```
sudo rpm --import http://rpm.datastax.com/rpm/repo_key
```
Install the DataStax agent:
```
sudo yum install datastax-agent
```
If you are using an earlier version of OpsCenter, add the supported version to the command:
```
sudo yum install datastax-agent-6.8.version-1
```
In DataStax Agent configuration, set stomp_interface to the IP address that OpsCenter is using. You might have to create the address.yaml file.
```
echo "stomp_interface: reachable_opscenterd_ip" | sudo tee -a /var/lib/datastax-agent/conf/address.yaml
```
If SSL communication is enabled in opscenterd.conf, use SSL in address.yaml:
```
echo "use_ssl: 1" | sudo tee -a /var/lib/datastax-agent/conf/address.yaml
```
Start the DataStax agent:
```
sudo service datastax-agent start
```

Manually deploy DataStax Agents from RPM

Prerequisites

Procedure

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