Is it Possible to Write on Group Replication Nodes when Number of Members is Less Than 3?
(Doc ID 2555707.1)
Last updated on FEBRUARY 26, 2020
Applies to:MySQL Server - Version 8.0 and later
Information in this document applies to any platform.
To ensure fault tolerance, at least three members are required within a group replication setup. However, there can be a situation where number of running member achieves to 3, like the following scenario for example:
- Starting up the group initially. Always only one member is active initially. When another member is added, still the number of members is two.
- Shutting down the group. When shutting down the group, by shutting down nodes one by one, number of member can be less than three at the end.
The question is if it is possible to write on such group where number of members is less than three.
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