Write a tutorial for setting up a cluster.

1. Define a cluster. What problems does it solve?
2. Make the case for enterprise scalability, advantages for clustering
3. Explain the difference between a Magnolia cluster and a Jackrabbit cluster.
   • Magnolia cluster. Instances and subscribers. Load balancing. See Performance and availability Tech Brief
   • Jackrabbit cluster. Typical use case is shared storage for a single workspace such as forum to share user generated content such as page comments across cluster nodes. See Clustering in Technical Guide and Richard's comment in this thread. You can also set up a full cluster (all workspaces) and get the cluster benefits.
4. Write steps for setting up clustered storage for the forum workspace. Provide sample configuration files for download. Search support tickets in Jira and ask Zdenek/Jan to provide configuration files.

Resources:

• Instance and clustering diagrams
• User list. Search for "cluster". What kind of clusters are users trying to set up?
• Good thread "Magnolia 4.4 + MySQL clustering" with Matt's steps.
• DOCU-127 is a use case for clustering UGC
• Add new instances to Jackrabbit cluster. Use case for adding a new webapp to an existing cluster. Must try with Magnolia instances first. Source: Zdenek.
• SUPPORT-1916 Cleaning a journal with a janitor task, considerations when running a cluster setup