Starting and Stopping Channels - AWS Elemental Conductor Live 3

This is version 3.17 of the AWS Elemental Conductor Live 3 documentation. This is the latest version. For prior versions, see the Previous Versions section of AWS Elemental Conductor Live 3 Documentation.

Starting and Stopping Channels

Starting and Stopping One Channel

You can start a channel from AWS Elemental Conductor Live 3; choose the green Start button from the Channels screen.


               Image file start-stop-channel.png

When you stop a channel, it is displayed at the point at which it was stopped on the AWS Elemental Conductor Live 3 web interface. When it is stopped on the AWS Elemental Conductor Live 3 web interface, it is also stopped on the AWS Elemental Live web interface and immediately archived.

Starting or Stopping Several Channels at One Time

Step A. Create the Task

You can use the Tasks feature to start or stop several channels at once.

  1. On the Channels screen, choose Tasks > Start Channels or Stop Channels.

  2. Select the channels for the action. On the Start Channels screen, only channels that are currently not running appear in the list. On the Stop Channels screen, only channels that are currently running appear.

    
                        Image file start-stop-channel-select.png
  3. On the final screen, choose Process Now or Save for Later.

    
                        Image file start-stop-channel-finish.png

Process Now

In this case, the channels are started or stopped immediately.

Save for Later

This option is intended to let you queue up several tasks and then execute them as quickly as possible.

For example, assume that you want to move all channels from node A to node B and then start channels that were idle and restart those that were running. Set up bulk changes as follows: do Bulk Change #1 to move the channels from node A to node B (change the associated node for the channels). Then do Bulk Change #2 to run all the channels that are now on node B. In order to do this two-part move with the least downtime, you could:

  1. Set up Bulk Change #1 and choose Save for Later.

  2. Set up Bulk Change #2 and choose Save for Later.

    Both bulk changes appear on the left side of the screen, as shown below.

  3. When you are ready, display the Channels screen and choose the Pending Tasks icon:

    
                        Image file channels-pending-tasks-icon.png
  4. Choose Run Pending Actions. Bulk Change #1 runs. As part of this change, any channels that were running before the action are restarted, except for idle channels, which are not started. As soon as #1 has finished, Bulk Change #2 runs, which then starts all the idle channels.

    
                        Image file channels-pending-tasks-show.png
    
                        Image file channels-pending-tasks-run.png
Warning

Save for Later is intended to queue a few changes for immediate execution.

Avoid choosing Save for Later, to set up bulk changes and then delay running them in a few hours, leaving the bulk change waiting; doing so may create undesired consequences later on.

Step B. Monitor the Status of the Task

When you choose Process Now to run the task, you can monitor the status of each stop or start in the task.

  1. Go to the Status > Task Report. The Task Reports screen appears. In the Task Reports panel on the left, choose the task to monitor (newer tasks appear first).

    (This list shows running and completed tasks; for pending tasks, go to the Channels screen and choose the Pending Tasks icon).

  2. Find the relevant task and review the information:

    • The top line shows the count of Total Tasks, Failed Tasks, and Successful Tasks.

    • Below that, a line appears for each individual action. Each line shows the current status of the action: Pending, Success, or an explanation of why the task failed.

    As the status of an action changes, the screen automatically refreshes to display the latest information.

    
                        Image file channel-monitor-task.png