- 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
- Step 13: Generating cluster_config.json
- 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
- Running uipathctl
- Manual: Performing the installation
- Post-installation
- Cluster administration
- Managing products
- Getting Started with the Cluster Administration portal
- 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 reduce permissions for an NFS backup directory
- 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
- Upgrade failure due to uppercase hostname
- 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
Step 9: Configuring kernel and OS level settings
This page describes the OS and the kernel settings, which a Linux administratormust perform before performing an Automation Suite installation.
Usually, these settings are managed via deployment tools such as Puppet, Ansible, etc. Make sure that these changes are made via the control process of your environment to prevent them from being reverted later.
Make sure to complete the following steps before starting the installation, as misconfigurations at the OS and kernel level can lead to non-intuitive errors. Checking these specific settings can often avoid such errors.
Disabling swap memory
You must disable swap memory before installing Automation Suite. Swap memory is known to cause issues with container workloads. Additionally, Automation Suite workloads do not benefit from using swap memory, and Kubernetes already optimizes memory usage.
Configuring sysctl settings
The following sysctl settings are required on the machine:
- enable IP forwarding
- disable reverse path filtering
You can do this by running the following command:
cat <<EOF >>"/etc/sysctl.d/99-sysctl.conf"
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.ipv4.conf.all.rp_filter=0
EOF
cat <<EOF >>"/etc/sysctl.d/99-sysctl.conf"
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-ip6tables = 1
net.ipv4.conf.all.rp_filter=0
EOF
The nf-call-iptables is needed for most Kubernetes deployments. Kubernetes creates virtual networks internal to the cluster. This allows every pod to have its own IP address, which is used in conjunction with the internal name services to facilitate service-to-service communication. The cluster does not work without nf-call-iptables enabled. For details, see the official Kubernetes documentation.
To apply the settings, run the following command:
sysctl --system
sysctl --system
Configuring fapolicy settings
This step is optional and applies only if you use fapolicy. In this case, an RKE2 specific policy is required.
To generate the RKE2 policy, use the following command:
cat <<-EOF >>"/etc/fapolicyd/rules.d/69-rke2.rules"
allow perm=any all : dir=/var/lib/rancher/
allow perm=any all : dir=/opt/cni/
allow perm=any all : dir=/run/k3s/
allow perm=any all : dir=/var/lib/kubelet/
allow perm=any all : dir=/root/.local/share/helm
EOF
cat <<-EOF >>"/etc/fapolicyd/rules.d/69-rke2.rules"
allow perm=any all : dir=/var/lib/rancher/
allow perm=any all : dir=/opt/cni/
allow perm=any all : dir=/run/k3s/
allow perm=any all : dir=/var/lib/kubelet/
allow perm=any all : dir=/root/.local/share/helm
EOF
Ensure that the change is communicated to your Linux team and goes through the appropriate configuration management processes.
Configuring noexec and nosuid settings
The disks used for the /var/lib/rancher mount must not have noexec or nosuid set. The uipathctl rke2 disk command automatically creates these mounts without these properties.
If a Linux administrator manually sets these properties, the instance becomes non-functional.
For more details on disk configuration, see Step 8: Configuring the disks.