16 Updating a Trento Agent #

To update the Trento Agent, follow the procedure below:

Log in to the Trento Agent host.
Stop the Trento Agent:
```
> sudo systemctl stop trento-agent
```

Install the new package:

> sudo zypper ref
> sudo zypper install trento-agent

Copy the file /etc/trento/agent.yaml.rpmsave to /etc/trento/agent.yaml. Make sure that entries facts-service-url, server-url, and api-key in /etc/trento/agent.yaml are correct.
Start the Trento Agent:
```
> sudo systemctl start trento-agent
```

Check the status of the Trento Agent:

sudo systemctl status trento-agent
● trento-agent.service - Trento Agent service
   Loaded: loaded (/usr/lib/systemd/system/trento-agent.service; enabled; vendor preset: disabled)
   Active: active (running) since Wed 2021-11-24 17:37:46 UTC; 4s ago
 Main PID: 22055 (trento)
    Tasks: 10
   CGroup: /system.slice/trento-agent.service
           ├─22055 /usr/bin/trento agent start --consul-config-dir=/srv/consul/consul.d
           └─22220 /usr/bin/ruby.ruby2.5 /usr/sbin/SUSEConnect -s

[...]

Check the version in the Hosts overview of the Trento Web (URL http://TRENTO_SERVER_HOSTNAME).
Repeat this procedure in all Trento Agent hosts.