7.5 Downgrade Execution Containers

Follow the steps in this section to downgrade an Execution Container.

Ensure that the environment variables are set correctly:

Variable Description

MZ_CONTAINER

Example value: execution1

This environment variable specifies an identifier for the container. Each container in your system must have a unique identifier.

Typical values for MZ_CONTAINER is the hostname, or a descriptive value for the purpose of the container.

The permitted characters for the container identifier are 'a-z','0-9' and '-'.

Run the following command to display the name of the local container:

$ mzsh topo container

Alternatively, you can re the value of MZ_CONTAINER in MZ_HOME/bin/mzsh.

$ cat $MZ_HOME/bin/mzsh

Example - Value of MZ_CONTAINER

. . .
if [ -z "${MZ_CONTAINER+x}" ]; then
        MZ_CONTAINER="execution1"
        export MZ_CONTAINER
fi
. . .

Example - Setting Environment Variables

$ export MZ_CONTAINER=execution1

$ export MZ_HOME=/opt/mz

$ export JAVA_HOME=/opt/jdk/jdk1.8.0_121

$ export PATH=$JAVA_HOME/bin:$MZ_HOME/bin:$PATH

Note!

If the software is installed on a GlusterFS storage, you must also set the environment variable IGNORE_TAR_EXIT to true. This will suppress non-critical errors that are caused by the tar command during upgrade. If these errors are not suppressed, the upgrade process will abort.

Example - Setting environment variable IGNORE_TAR_EXIT

$ export IGNORE_TAR_EXIT=true

Downgrade the Execution Container by using the setup script setup.sh. This file was copied or extracted during the upgrade.

$ ./setup.sh downgrade

Next:

7.6 Resume Workflow Execution After Downgrade