Documentation Home
MySQL 8.0 Reference Manual
Related Documentation Download this Manual
PDF (US Ltr) - 44.6Mb
PDF (A4) - 44.7Mb
PDF (RPM) - 40.4Mb
HTML Download (TGZ) - 10.5Mb
HTML Download (Zip) - 10.5Mb
HTML Download (RPM) - 9.1Mb
Man Pages (TGZ) - 205.6Kb
Man Pages (Zip) - 308.8Kb
Info (Gzip) - 3.9Mb
Info (Zip) - 3.9Mb
Excerpts from this Manual

18.10.2 The Group

In MySQL Group Replication, a set of servers forms a replication group. A group has a name, which takes the form of a UUID. The group is dynamic and servers can leave (either voluntarily or involuntarily) and join it at any time. The group adjusts itself whenever servers join or leave.

If a server joins the group, it automatically brings itself up to date by fetching the missing state from an existing server. This state is transferred by means of Asynchronous MySQL replication. If a server leaves the group, for instance it was taken down for maintenance, the remaining servers notice that it has left and reconfigure the group automatically. The group membership service described at Section 18.1.3.2, “Group Membership” powers all of this.


User Comments
User comments in this section are, as the name implies, provided by MySQL users. The MySQL documentation team is not responsible for, nor do they endorse, any of the information provided here.
Sign Up Login You must be logged in to post a comment.