Manual: Online upgrade

Preparation

Important:

Perform the following steps on the first server node and then on all the other nodes (both server and agent) in the cluster.

Make sure you have 10GiB of free space in the /opt/UiPathAutomationSuite folder on all the nodes. If you do not have enough space, you can either increase the capacity of this folder or remove all the previous installer files except for cluster_config.json. You can always download the previous installer again.

To verify available space, run the following command: df -h /opt/UiPathAutomationSuite.

To prepare for the upgrade, take the following steps:

1. Log into any server machine using SSH. In the case of single-node evaluation profile, where you have only one server node, log into that node.
2. Become root user:

   sudo su -

3. Create an installation folder under the /opt/UiPathAutomationSuite directory:

   # Please replace {version} with installer version
   mkdir -p /opt/UiPathAutomationSuite/{version}/installer

4. Download sf-installer.zip and copy it to /opt/UiPathAutomationSuite/{version}/installer. For download instructions, see sf-installer.zip.

   cp /path/to/sf-installer.zip /opt/UiPathAutomationSuite/{version}/installer

5. Unzip sf-installer.zip:

   cd /opt/UiPathAutomationSuite/{version}/installer
   unzip sf-installer.zip -d .

6. Provide permission to the installer:

   chmod 755 -R /opt/UiPathAutomationSuite/{version}/installer

7. Generate the latest cluster_config.json file on the first server node and copy it to the rest of the nodes.
   Note: For details on how to configure the cluster_config.json parameters, see Advanced installation experience.

   • If you have the old cluster_config.json, generate the configuration file from the cluster:

     cd /opt/UiPathAutomationSuite/{version}/installer
     
     ./configureUiPathAS.sh config get -i /path/to/old/cluster_config.json -o ./cluster_config.json

   • If you do not have the old cluster_config.json file, generate any override of any default values, which you may have done at the time of previous version installation:

     cd /opt/UiPathAutomationSuite/{version}/installer
     
     ./configureUiPathAS.sh config get -o ./cluster_config.json

8. (Optional) If you still use a self-signed certificate generated by the installer, run the following command. This step is required on the first server node, where you will perform the upgrade of UiPath products.

   ### Please replace /path/to/cert with path to location where you want to store certificates.
   ./configureUiPathAS.sh tls-cert get --outpath /path/to/cert
   
   ### Now copy the ca.crt file generated in above location to trust store location
   sudo cp --remove-destination /part/to/cert/ca.crt /etc/pki/ca-trust/source/anchors/
   
   ### Update the trust store
   sudo update-ca-trust

Execution

Important: If any errors or issues occur during or following the upgrade, you can rollback to the previous version, provided that you previously configured a backup. For instructions, see Rollback on error.

Configuring the backup

To configure the backup, take the following steps:

1. Make sure you have enabled the backup on the cluster. You must create the backup using the same version of the installer as the one you used for the current deployment. For instructions, see the backup and restore documentation corresponding to the Automation Suite version from which you plan to upgrade. For instance, if you plan to upgrade from Automation Suite 2021.10, follow the instructions in the 2021.10 guide.
2. Connect to one of the server nodes via SSH.
3. To verify that all desired volumes have backups in the cluster, run:

   /path/to/old-installer/configureUiPathAS.sh verify-volumes-backup

   Note: The backup might take some time, so wait for approximately 15-20 minutes, and then verify the volumes backup again.

Once the backup is created, continue with the following steps.

Putting the cluster in maintenance mode

Putting the cluster in maintenance mode will shut down the ingress controller and all the UiPath services, blocking all the incoming traffic to the Automation Suite cluster.

Important: This operation will cause downtime, and your business automation will be suspended during the entire upgrade process.

1. To put the cluster in maintenance mode, run:

   cd /opt/UiPathAutomationSuite/{version}/installer
   ./configureUiPathAS.sh enable-maintenance-mode

2. To verify that the cluster is in maintenance mode, run:

   ./configureUiPathAS.sh is-maintenance-enabled

   Important: Create a backup of your SQL Server after enabling maintenance mode so that no further transactions are recorded in your SQL database.

Updating Kubernetes and other infrastructure components

Important:

You must perform the infrastructure upgrade on all the nodes in the cluster.

You cannot perform this step on multiple nodes at the same time; you must wait for the upgrade to finish on each node before moving to another.

1. Log into each node where you want to perform the infrastructure upgrade.
2. Become root by running sudo su -.
3. Make sure rke service is enabled on server and agent nodes.

   If the service is disabled, enable it by running the following command:

   • For a server node:

     [[ $(systemctl is-enabled rke2-server.service) != "enabled" ]] && systemctl enable rke2-server.service

   • For an agent node:

     [[ $(systemctl is-enabled rke2-agent.service) != "enabled" ]] && systemctl enable rke2-agent.service

4. To start the upgrade, run the following command:
   Important: Make sure you have updated cluster_config.json generated as described in the Preparation steps.

   # replace {version} with the version you are upgrading to
   cd /opt/UiPathAutomationSuite/{version}/installer
   
   ./install-uipath.sh --upgrade -k -i ./cluster_config.json -o ./output.json --accept-license-agreement

   Important:

   If you get the following error, follow the instructions in Downgrading Ceph from 16.2.6 to 15.2.9.

   Ceph cluster is running on version: 16.2.6 with known bug(https://docs.ceph.com/en/quincy/releases/pacific/#v16-2-6-pacific). Please provide temporary backup directory (via environment variable 'TMP_CEPH_BACKUP_PATH') to downgrade ceph

Updating Shared Components and UiPath Product Services

This step upgrades the fabric and service components running with the cluster. You must follow this steps only once from any of the server nodes.

1. Connect to any server node.
2. Become root by running sudo su -.
3. Run the following command:

   # replace {version} with the version you are upgrading to
   cd /opt/UiPathAutomationSuite/{version}/installer
   
   ./install-uipath.sh --upgrade -f -s -i ./cluster_config.json --accept-license-agreement -o ./output.json

   Important:

   Once the upgrade is done, maintenance mode will be disabled automatically.

   After manually upgrading from Automation Suite 2021.10 to 2022.4, you must also migrate to Cilium CNI. For instructions, see Migrating from Canal to Cilium CNI.

After performing the upgrade, you can take the following additional steps:

• To verify if Automation Suite is healthy, run:

  kubectl get applications -n argocd

• If you experience issues with image vulnerabilities or storage consumption after performing an upgrade, delete the images from the old installer. For details, see the Troubleshooting section.

Enabling the backup post-upgrade

Important: Make sure Automation Suite is up and running and your automation continues as expected before proceeding with the next steps.

Before starting to upgrade the cluster, the upgrade script automatically creates a backup of the cluster and then temporarily disables it. You may want to enable the backup manually once the upgrade is done.

To enable the backup, run the following command from any server node:

# replace {version} with the version you are upgrading to
cd /opt/UiPathAutomationSuite/{version}/installer

./configureUiPathAS.sh resume-scheduled-backups