Ambience is fully HA compliant. All jobs can run on any node of the cluster and all data are replicated across the cluster.
In case of a node failure, jobs on the failed node are automatically run on other nodes.
When the failed node recovers, it automatically joins the cluster again.
The attached Ambience-HA-4.pdf (701.1 KB) demonstrates the following points (applicable to version 4.x and above):
- Configuring the Cluster
- Installing Ambience on the Three Nodes
- Configuring the File Server for the Dacapo Data Folder
- Testing the Cluster
- Load balancing Ambience Web Servers
- Configuring HAProxy
- Installation
- Configuring HAProxy
- Configuring HAProxy
Refer to the Ambience documentation for further information and explanations: