Install JDBC Driver on Minion

To detect, poll, or collect any JDBC service, you must install the corresponding JDBC driver. The driver for PostgreSQL is included on the Minion without any additional configuration needed.

This is an optional step and is only needed if you are monitoring a JDBC service that is not PostgreSQL.

We reference the repository directory relative to the Minion home directory. Depending on your operating system, the home directory is /usr/share/minion for Debian and Ubuntu, or /opt/minion for CentOS and RHEL.

  1. Download the JDBC driver JAR from a repository (for example, a public Maven repository).

  2. Install the JAR file in the repository directory, following the Maven repository pattern.

    For MySQL 8.0.30, the path would be repositories/default/mysql/mysql-connector-java/8.0.30/mysql-connector-java-8.0.30.jar.

  3. Create a Karaf feature for the MySQL JDBC driver.

Create a features configuration file
sudo vi deploy/jdbc-mysql.xml
Add the following content to download the MySQL JDBC driver
<?xml version="1.0" encoding="UTF-8"?>
<features name="opennms-33"(1)
          xmlns="http://karaf.apache.org/xmlns/features/v1.4.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://karaf.apache.org/xmlns/features/v1.4.0 http://karaf.apache.org/xmlns/features/v1.4.0">
  <feature name="mysql-bundle" version="8.0.22" install="auto">(2)
    <bundle>wrap:mvn:mysql/mysql-connector-java/8.0.22</bundle>(3)
  </feature>
</features>

  1. The version should match your Horizon Core version.

  2. The bundle is named mysql-bundle, and the version number is set to 8.0.30.

  3. Bundle to download version 8.0.30 with Maven from official repositories.

As soon you write the file, Karaf picks up the feature and tries to install it. You can troubleshoot the installation using ${MINION_HOME}/data/log/karaf.log.

Connect to the Karaf shell
ssh -p 8201 admin@localhost
Verify feature installation and start-up
feature:list | grep mysql
MySQL bundle is installed and available
mysql-bundle   | 8.0.22   | x        | Started     | opennms-{page-component-version}  |