25.4 Upgrading the Operating System

When you upgrade the operating system to a major version, such as upgrading from SLES 11 to SLES 12, the upgrade procedure for the operating system deletes some Sentinel RPMs.

This version of Sentinel includes a set of commands to use during the operating system upgrade procedure. These commands ensure Sentinel works correctly after you upgrade the operating system.

NOTE:You must upgrade Sentinel before you upgrade the operating system.

Use the following steps to upgrade your operating system:

  1. On the Sentinel server where you want to upgrade your operating system, log in as one of the following:

    • root user

    • Non-root user

  2. Open a command prompt and change to the directory where the Sentinel install file was extracted.

  3. Stop the Sentinel services:

    rcsentinel stop

  4. Run the following command:

    ./install-sentinel --preosupgrade

    NOTE:If you are running this command as a non-root user, ensure that the novell user has appropriate permissions to create a file in the current working directory.

  5. Upgrade your operating system.

  6. (Conditional) If you are logged in as a non-root user, complete the following steps:

    1. Switch to root user.

    2. Run the following command:

      ./bin/root_install_prepare --location=<install_location> --postosupgrade

    3. Switch to non-root user.

  7. Run the following command:

    ./install-sentinel --postosupgrade

  8. Repeat this procedure on the following:

    • Collector Managers

    • Correlation Engines

    • NetFlow Collector Managers

  9. (Conditional) If you are upgrading the operating system in a traditional Sentinel installation, restart the Sentinel service:

    rcsentinel restart

    This step is not applicable for Sentinel HA.