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This version of GitHub Enterprise was discontinued on 2023-03-15. No patch releases will be made, even for critical security issues. For better performance, improved security, and new features, upgrade to the latest version of GitHub Enterprise. For help with the upgrade, contact GitHub Enterprise support.

Configuring high availability

GitHub Enterprise Server supports a high availability mode of operation designed to minimize service disruption in the event of hardware failure or major network outage affecting the primary appliance.

  • About high availability configuration

    In a high availability configuration, a fully redundant secondary GitHub Enterprise Server appliance is kept in sync with the primary appliance through replication of all major datastores.

  • Creating a high availability replica

    In an active/passive configuration, the replica appliance is a redundant copy of the primary appliance. If the primary appliance fails, high availability mode allows the replica to act as the primary appliance, allowing minimal service disruption.

  • Monitoring a high-availability configuration

    After configuration of high availability for your GitHub Enterprise Server instance, you can monitor the status of data replication among to your instance's replica nodes.

  • Initiating a failover to your replica appliance

    You can failover to a GitHub Enterprise Server replica appliance using the command line for maintenance and testing, or if the primary appliance fails.

  • Recovering a high availability configuration

    After failing over to a GitHub Enterprise Server appliance, you should regain redundancy as soon as possible rather than rely on a single appliance.

  • Removing a high availability replica

    You can stop replication to a GitHub Enterprise Server replica temporarily, or permanently remove replication.

  • About geo-replication

    Geo-replication on GitHub Enterprise Server uses multiple active replicas to fulfill requests from geographically distributed data centers.