### 18.8.3 Group Replication Online Upgrade

[18.8.3.1 Online Upgrade Considerations](group-replication-online-upgrade-considerations.html)
[18.8.3.2 Upgrading a Group Replication Member](group-replication-upgrading-member.html)
[18.8.3.3 Group Replication Online Upgrade Methods](group-replication-online-upgrade-methods.html)
[18.8.3.4 Group Replication Upgrade with **mysqlbackup**](group-replication-upgrade-with-mysqlbackup.html)

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 When you have a group running which you want to upgrade but you need to keep the group online to serve your application, you need to consider your approach to the upgrade. This section describes the different elements involved in an online upgrade, and various methods of how to upgrade your group.

