Remove a Linux compute host

You want to remove a compute host from the Symphony DE cluster. This topic guides you through the process of uninstalling the software and removing the host from the cluster.

Uninstall Symphony DE

There are two ways to uninstall Symphony DE, depending on which installation files and procedure you installed with.

If you installed using .tar.gz package

  1. Shut down Symphony DE processes:

    soamshutdown

  2. Delete the Symphony DE installation directory and all subdirectories.

    rm -r $SOAM_HOME

If you installed using RPM

  1. Shut down Symphony DE processes on the local host:

    soamshutdown

  2. Uninstall:
    • For example, for Red Hat Enterprise Linux 4 or SuSE Linux Enterprise Server 9, enter (on one line)

      rpm -e symphonyDE-linux2.6-glibc2.3-x86-4.1.0.build_number
    • For example, for Red Hat Enterprise Linux 3, enter

      rpm -e symphonyDE-linux2.4-glibc2.3-x86-4.1.0.build_number
    • For Red Hat Linux Advanced Server 2.1 or SuSE Linux Enterprise Server 8, enter

      rpm -e symphonyDE-linux2.4-glibc2.2-x86-4.1.0.build_number
    Note:

    If you used --dbpath during installation, to uninstall specify --dbpath. Also, if you use RPM Version 4.1.1, and have installed other software packages using the default dbpath, to uninstall specify --nodeps.

  3. Manually remove any directories left over in $SOAM_HOME.

    For example, manually delete /opt/symphonyDE/DE41, the Symphony DE installation directory.

    Uninstalling does not remove any added or changed files.

Remove the compute host

To remove a compute host from the cluster, you need to remove the configuration entry for the host.

  1. Log on to the management host.
  2. Shut down Symphony DE processes on the management host:

    soamshutdown

  3. Edit $SOAM_HOME/conf/vem_resource.conf and remove the AGENT line that indicates your host.
  4. Save the file.
  5. Start up Symphony DE processes on the management host:

    soamstartup &

  6. Log on to each compute host and start up Symphony DE:

    soamstartup &