# Step C: Disable high availability
<a name="upg-std-disable"></a>

If you don't have high availability enabled, skip this step and go to [Step E: Stop the running channels](upg-std-stop.md).

**To disable high availability**

1. If you're using a virtual machine (VM), take a snapshot before disabling high availability. See the VMware VSphere help text for more information.

1. On the web interface for the primary Conductor Livenode, go to the **Cluster** page and choose **Redundancy**.

1. In the **High Availability** field, choose **Disable**.

1. Verify that high availability is disabled. From Linux prompts, access the primary and secondary Conductor Live nodes with the *elemental* user credentials. For password assistance, contact your system administrator.

1. In the remote terminal session for each Conductor Live, enter the following command to verify that Conductor Live high availability is disabled:

   ```
   [elemental@hostname log]$ tail -F /opt/elemental_se/web/log/conductor_live247.output
   ```

   The conductor\_live247.output log starts to scroll on the screen and shows messages as they are occurring. Watch for the following INFO lines on the primary Conductor Live node:

   ```
   WARN -- : Disabling HA, elemental_se restarting…
   .
   .
   .
   I, [2015-11-13T04:37:54.491204 #4978] INFO -- : HA environment not enabled
   .
   .
   .
   I, [2015-11-13T04:38:03.905069 #4978] INFO -- : Elemental Conductor is ready
   ```

   Ensure the secondary Conductor Live is also ready.

1. Press Ctrl\+C to exit the tail command.

1. Enter the following commands:

   ```
   [elemental@hostname ~]$ sudo -s
   [elemental@hostname ~]$ cd /data/pgsql/logs
   [elemental@hostname ~]$ tail -F postgresql-{{<day>}}.log
   ```

   where <day> is today (the day you are upgrading), typed with an initial capital letter: Mon, Tue, Wed, Thu, Fri, Sat, Sun

1. Confirm that you see `database system is ready to accept connections` on the secondary Conductor Live.

1. Press Ctrl\+C to exit the tail command.

1. Type the following command to exit the session as the sudo user:

   ```
   [elemental@hostname ~]$ exit
   ```