- Overview
- Requirements
- Deployment templates
- Manual: Preparing the installation
- Manual: Preparing the installation
- Step 2: Configuring the OCI-compliant registry for offline installations
- Step 3: Configuring the external objectstore
- Step 4: Configuring High Availability Add-on
- Step 5: Configuring SQL databases
- Step 7: Configuring the DNS
- Step 8: Configuring the disks
- Step 9: Configuring kernel and OS level settings
- Step 10: Configuring the node ports
- Step 11: Applying miscellaneous settings
- Step 12: Validating and installing the required RPM packages
- Cluster_config.json Sample
- General configuration
- Profile configuration
- Certificate configuration
- Database configuration
- External Objectstore configuration
- Pre-signed URL configuration
- ArgoCD configuration
- Kerberos authentication configuration
- External OCI-compliant registry configuration
- Disaster recovery: Active/Passive and Active/Active configurations
- High Availability Add-on configuration
- Orchestrator-specific configuration
- Insights-specific configuration
- Process Mining-specific configuration
- Document Understanding-specific configuration
- Automation Suite Robots-specific configuration
- AI Center-specific configuration
- Monitoring configuration
- Optional: Configuring the proxy server
- Optional: Enabling resilience to zonal failures in a multi-node HA-ready production cluster
- Optional: Passing custom resolv.conf
- Optional: Increasing fault tolerance
- Adding a dedicated agent node with GPU support
- Adding a Dedicated Agent Node for Automation Suite Robots
- Step 15: Configuring the temporary Docker registry for offline installations
- Step 16: Validating the prerequisites for the installation
- Manual: Performing the installation
- Post-installation
- Cluster administration
- Managing products
- Getting Started with the Cluster Administration portal
- Adding a new node to the cluster
- Removing a node from the cluster
- Repaving a cluster node
- Starting and shutting down a node
- Renaming a node
- Migrating Redis from in-cluster to external High Availability Add-on
- Migrating data between objectstores
- Migrating in-cluster objectstore to external objectstore
- Migrating from in-cluster registry to an external OCI-compliant registry
- Switching to the secondary cluster manually in an Active/Passive setup
- Disaster Recovery: Performing post-installation operations
- Converting an existing installation to multi-site setup
- Guidelines on upgrading an Active/Passive or Active/Active deployment
- Guidelines on backing up and restoring an Active/Passive or Active/Active deployment
- Scaling a single-node (evaluation) deployment to a multi-node (HA) deployment
- Monitoring and alerting
- Migration and upgrade
- Migrating between Automation Suite clusters
- Upgrading Automation Suite
- Downloading the installation packages and getting all the files on the first server node
- Retrieving the latest applied configuration from the cluster
- Updating the cluster configuration
- Configuring the OCI-compliant registry for offline installations
- Executing the upgrade
- Performing post-upgrade operations
- Product-specific configuration
- Best practices and maintenance
- Troubleshooting
- How to troubleshoot services during installation
- How to uninstall the cluster
- How to clean up offline artifacts to improve disk space
- How to clear Redis data
- How to enable Istio logging
- How to manually clean up logs
- How to clean up old logs stored in the sf-logs bucket
- How to disable streaming logs for AI Center
- How to debug failed Automation Suite installations
- How to delete images from the old installer after upgrade
- How to disable TX checksum offloading
- How to manually set the ArgoCD log level to Info
- How to expand AI Center storage
- How to generate the encoded pull_secret_value for external registries
- How to address weak ciphers in TLS 1.2
- How to check the TLS version
- How to work with certificates
- How to schedule Ceph backup and restore data
- How to collect DU usage data with in-cluster objectstore (Ceph)
- How to install RKE2 SELinux on air-gapped environments
- How to clean up old differential backups on an NFS server
- Error in downloading the bundle
- Offline installation fails because of missing binary
- Certificate issue in offline installation
- SQL connection string validation error
- Azure disk not marked as SSD
- Failure after certificate update
- Antivirus causes installation issues
- Automation Suite not working after OS upgrade
- Automation Suite requires backlog_wait_time to be set to 0
- Temporary registry installation fails on RHEL 8.9
- Frequent restart issue in uipath namespace deployments during offline installations
- DNS settings not honored by CoreDNS
- Upgrade fails due to unhealthy Ceph
- RKE2 not getting started due to space issue
- Upgrade fails due to classic objects in the Orchestrator database
- Ceph cluster found in a degraded state after side-by-side upgrade
- Service upgrade fails for Apps
- In-place upgrade timeouts
- Upgrade fails in offline environments
- snapshot-controller-crds pod in CrashLoopBackOff state after upgrade
- Upgrade fails due to overridden Insights PVC sizes
- Setting a timeout interval for the management portals
- Authentication not working after migration
- Kinit: Cannot find KDC for realm <AD Domain> while getting initial credentials
- Kinit: Keytab contains no suitable keys for *** while getting initial credentials
- GSSAPI operation failed due to invalid status code
- Alarm received for failed Kerberos-tgt-update job
- SSPI provider: Server not found in Kerberos database
- Login failed for AD user due to disabled account
- ArgoCD login failed
- Update the underlying directory connections
- Failure to get the sandbox image
- Pods not showing in ArgoCD UI
- Redis probe failure
- RKE2 server fails to start
- Secret not found in UiPath namespace
- ArgoCD goes into progressing state after first installation
- Missing Ceph-rook metrics from monitoring dashboards
- Mismatch in reported errors during diagnostic health checks
- No healthy upstream issue
- Redis startup blocked by antivirus
- Running High Availability with Process Mining
- Process Mining ingestion failed when logged in using Kerberos
- Unable to connect to AutomationSuite_ProcessMining_Warehouse database using a pyodbc format connection string
- Airflow installation fails with sqlalchemy.exc.ArgumentError: Could not parse rfc1738 URL from string ''
- How to add an IP table rule to use SQL Server port 1433
- Automation Suite certificate is not trusted from the server where CData Sync is running
- Running the diagnostics tool
- Using the Automation Suite support bundle
- Exploring Logs
- Exploring summarized telemetry

Automation Suite on Linux installation guide
After installing Automation Suite, you can remove any node from the cluster for machine maintenance purposes or to release unused resources. You can remove server, agent, and GPU nodes from the cluster.
Removing a node from the cluster is possible only on multi-node HA-ready production setups.
Removing nodes from the cluster does not cause any downtime. However, it can still affect the internal caching component if HAA is not configured.
The removal of the GPU node will not wait for already scheduled jobs, such as training pipeline or analysis. If these jobs are deleted in the process of node removal, you need to start afresh. Make sure that no processes are running on the nodes you plan to remove.
Performing the following steps would only result in the nodes being removed from the cluster. The machine will not be wiped completely, and some residues could render it unusable for further installation.
Make sure you format the machine and prepare it for installation or for adding it to an existing cluster by following the instructions in Configuring the disks.
To successfully remove a node from the cluster, you must meet the following requirements:
- The capacity of the resultant cluster must match the total required capacity to run the workloads scheduled before the node removal. For example, if total workloads require 32 vCPU and 64 GB memory, then after the node removal, the remaining nodes in the cluster should have at least the same amount of resources. Otherwise, you will not be allowed to remove the nodes.
- The resultant cluster must have a minimum of 3 server nodes; an odd number of server nodes is also required.
- If the setup is multizonal, the resultant cluster must have server nodes in each of the 3 zones.
- The cluster must be in a healthy state, i.e., all the nodes or pods are healthy. Pods are unhealthy when they are in any of
the following states:
Pending,Error,Init,Crashloopbackoff,Terminating. - You cannot remove GPU nodes unless additional corresponding GPU nodes are available.
To remove a node from the cluster, take the following steps:
The script warns you to shut down or terminate the node; it does not delete the node from the cluster until you shut down the node. The script waits for 5 minutes for the node to be shut down before timing out. The script provides instructions on which node to shut down and in what order. You can also rerun the script if you have not shut down the node in the requested time.
To automate the entire node removal process, take the following steps:
- Add the
--skip-node-deletionflag at the end of the script in step 3. - Once the script is succeeded, shut down the first target node and then rerun the script, this time without
--skip-node-deletion. If you have not shut down the node in the order provided to the script, then it will fail. You can always rerun the script, once the expected node is shut down. - Repeat the previous step until all the nodes are removed successfully.
To get the name of the nodes to remove, see How to get the node name.
How to get the node name
To get the names of the nodes, take the following steps:
agent3, server0, server1, and server2.