Data Center

Owned by Rosen Marinkov
Last updated: Sept 25, 2024 by Stanley Neychev
2 min read

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Configuration Manager for Jira (CMJ) is compatible with Jira Data Center.

What is the effect of CMJ operations on Jira Data Center cluster performance?

Jira Data Center allows you to run a cluster of multiple Jira nodes, providing a stable performance under high load. The CMJ operations (snapshot creation, deployment, integrity check, etc.) always run on a single node. This is the node where the user is currently logged in and starts the operation.

Running CMJ operations on a single node ensures that your Jira performance across all other nodes remains stable and no slowdowns in response time occur. Your Jira performance will be affected only on the node where the CMJ operation is running.

How to deal with big snapshot deployments to optimize performance?

The larger a snapshot is, the more projects, customized configurations, and issues it contains. Deploying huge snapshots on big Data Center clusters will most likely lead to very slow and problematic deployments. This is due to the number of changes and comparisons CMJ has to make during the deployment, as well as the cache re-indexing that needs to occur after the deployment.

To better deal with heavy deployments, we advise you to create a separate node dedicated to these tasks. Ensure it’s taken off of the load balancer and that it has increased system resources (processor, memory, etc.) to handle those big deployments. By being off of the load balancer, the node won't be slowed down by client requests, and thus, its performance will be much better. Atlassian recommends a similar approach for reducing cluster downtime.

Best practices for adding a dedicated deployment node

1. Add a new node to your cluster without adding it to the load balancer. Let's call this your deployment node. This way, you'll have a dedicated node for heavy deployments and re-indexes that's fast and reliable without disrupting your workflow. This deployment approach works with any Data Center instance - non-clustered and clustered - regardless of the number of nodes you currently have.

2. Give the deployment node enhanced system resources. Also, consider turning off CMJ’s cache re-index option, which usually triggers immediately after a deployment. This way, you can finish up your deployment, and when everything has been correctly deployed, you can manually initiate a full Jira re-index for the node.

3. Deactivate the deployment node after nodes synchronization is complete. After the successful deployment, all the deployed data will automatically be synced up with your main node/s. After all nodes have synced up the data, you can deactivate the deployment node until you need to make a large snapshot deployment again.