Appian on Kubernetes Installation

This page applies to administrators of Appian on Kubernetes in self-managed environments.

About Appian on Kubernetes

Appian on Kubernetes lets self-managed customers host Appian as a containerized application on a Kubernetes cluster. Instead of managing each Appian component separately, Kubernetes orchestrates them together—and the Appian Operator handles the coordination so you don't have to.

The Appian Operator is versioned separately from the Appian platform. Appian supports the three latest Appian Operator releases for use with any supported Appian platform release. This policy means that you can run a newer Appian Operator against Appian 25.2.

Documentation organization

The Appian Operator documentation is the primary source of information for installing and upgrading the Appian Operator, as well as migrating to Appian on Kubernetes from a machine-based self-managed environment.

In Appian 25.4, descriptions of certain Appian Operator capabilities were moved from the Appian Operator documentation to the Appian platform documentation.

Because of this reorganization, these descriptions don't appear in Appian 25.2 documentation. However, the Appian 25.4 version of these descriptions apply to Appian 25.2, so you can use the links in the following section to answer your installation and configuration questions.

Capability descriptions

Use the following links to jump to the appropriate Appian 25.4 descriptions:

Capability	Description
Application Logging	Customize application logging for Webapp, Search Server, and Service Manager.
Assign Pods to Nodes	Control which nodes Appian pods run on using nodeSelectors and affinity rules.
Backups	Run and restore system backups for Appian on Kubernetes installations.
Cold Failover	Configure cold failover for Appian on Kubernetes installations.
Editing, Stopping, and Restarting Appian	Learn which site property changes require a full restart, a webapp-only restart, or no restart.
Exposing Appian Outside Kubernetes	Route external HTTP and HTTPS traffic into Appian using an Ingress resource.
FAQ: Containerized Self-managed Appian	Find answers to common questions about running self-managed Appian on Kubernetes.
Health Check	Ensure Health Check runs properly on Appian on Kubernetes installations.
High Availability	Configure high availability for Appian on Kubernetes installations.
Horizontal Pod Autoscaling	Scale Apache Web Server (httpd) replicas automatically based on CPU usage.
Init and Sidecar Containers	Set up init and sidecar containers on Appian custom resources.
kubectl Cheat Sheet	Reference helpful kubectl commands for developing, debugging, and operating Appian on Kubernetes.
Mail Server Setup	Configure how Appian sends and receives email, including the Kubernetes Secret setup.
Role-Based Access Control	Understand the operator's cluster roles and namespace permissions.
Security	Define privilege and access control settings for pods and containers using a security context.
Self-Managed Resource Requests and Limits	Set per-component resource requests and limits using sizing guidelines.
Set Up Appian AI for Appian on Kubernetes	Set up and configure Appian AI features for self-managed Kubernetes environments.
Set Up RPA for Appian on Kubernetes	Configure RPA in Appian on Kubernetes.
Support Bundle	Generate a support bundle for the Appian Operator and the sites it manages.
Topology Changes	Migrate an Appian deployment between standalone and high availability topologies.
Troubleshooting	Troubleshoot the Appian site and operator, including startup and shutdown issues.
Volumes and Volume Mounts	Configure volumes and volume mounts for Appian on Kubernetes.

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