Upgrading the virtual software and virtual hardware requires some downtime for your instance, so be sure to plan your upgrade in advance.
GitHub Enterprise 2.11 includes an upgrade to Elasticsearch 2.4. To prepare the appliance for upgrade to 2.11 or later, you'll need to use the migration script.
Before upgrading GitHub Enterprise, review these recommendations and requirements to plan your upgrade strategy.
Upgrade GitHub Enterprise to get the latest features and security updates.
You can enable automatic update checks so that your GitHub Enterprise instance checks for and downloads the latest GitHub Enterprise release.
You can increase or change the amount of storage available for Git repositories, databases, search indexes, and other persistent application data.
To add CPU or memory resources to an existing GitHub Enterprise instance, shut down the instance and use the underlying virtual platform's tools to allocate the resources to the virtual machine. The newly allocated resources are automatically recognized on boot and no additional configuration is necessary.
To migrate from GitHub Enterprise 11.10.x to 2.1.23, you'll need to set up a new appliance instance and migrate data from the previous instance.