Configuring Database Failover

To edit the configuration on the ISR API and Archival deployments to include database failover:

Using a secure shell (SSH) client, log into the RSS host/s using a user name and password.
To add the secondary database IP address to the API configuration, edit the following file.
```
/var/lib/tomcat/webapps/IsrApi/WEB-INF/web.xml
```

Using the arrow keys to navigate the file and edit the following line with the relevant IP addresses:

<context-param>
    <param-name>connectionString</param-name>
    <param-value>jdbc:mysql://169.254.1.50,<secondary_host_IP>/ipcr_db</param-value>
    <description>MsSQLX connection URI</description>
  </context-param>

Save your changes to the file.
Restart the application server by performing the following:
```
systemctl restart tomcat
```
If required, verify successful failover between the PRIMARY and SECONDARY servers.