# Step I: Add failed worker node
<a name="upg-red-add-failed"></a>

Add the failed worker back to the cluster and redundancy groups so that it can encode while the remaining workers are upgraded.

## Step A: Add failed worker to the cluster
<a name="upg-red-add-w-cluster"></a>

Add the failed worker node back to the cluster.

**To add nodes to the cluster**

1. On the web interface for the primary Conductor Live node, go to the **Cluster** page and choose **Nodes**.

1. On the **Nodes** page, choose **Add Node**.

1. In the **Add Nodes to Cluster** dialog, do one of the following:
   + In **Node IP Address/s**, enter the IP address or range of IP addresses for multiple nodes and choose **Add**.
   + If your network has a DNS server, search for the node by its hostname:

     1. In **Lookup Node IP Address**, enter the hostname of the node that you're adding. You set the hostname during installation of the node.

     1. Choose the **search** icon.

     1. When Conductor Live displays the IP address that corresponds to the hostname, choose the plus sign beside the address to add it to the Node IP address list.

     1. Choose **Add**.

1. Still in the **Add Nodes to Cluster** dialog, add each node that will be a part of the cluster.

1. Verify that the nodes are added to the list on the Nodes screen and the correct information is shown:
   + The **Status** is **Online**.
   + The **Elemental Product** is the correct type of node, either Conductor Live or AWS Elemental Live.

1. If any nodes contain SDI cards, import the devices so that the Conductor Live node knows about them. Do the following:

   1. On a node that as SDI cards, choose the downward triangle and select **Import Devices**.

      Conductor Live detects the device and adds its configuration to the Conductor Live database.

   1. Import the devices for all nodes that use SDI cards.

   If you don't import the devices, they won't appear in the Conductor Live web interface. You won't be able to specify these devices as video sources in a channel.

## Step B: Add failed worker to a redundancy groups
<a name="upg-red-add-w-red"></a>

Add the failed workers to their redundancy groups.

For more information about adding workers to redundancy groups, see *Add Worker Node Redundancy* in the [AWS Elemental Conductor Live Configuration Guide](https://docs.aws.amazon.com/elemental-cl3/latest/configguide/).

**To add the failed worker to a redundancy group**

1. On the web interface for the primary Conductor Live node, go to the **Cluster** page. 

1.  On the **Cluster** page, choose **Redundancy**. 

1. In the navigation bar, choose the Elemental Live redundancy group that this node belongs to.

1. On the **Backup Nodes** tab, choose **Add to Backup Nodes**.

1. In the **Nodes** field, select the failed worker node to add to the group.

1. Choose **Add**.