This blog is about one of the issues encountered by our Remote
DBA Team in one of the production servers. We have a setup of
MySQL 5.7 Single Primary (Writer) GR with cluster size of 3
. Due to OOM, the MySQL process in the primary node got killed,
this repeated over the course of the time.
We all know about the OOM (out of memory), theoretically, it is a
process that the Linux kernel employs when the system is
critically low on memory.
In a dedicated DB server, when the OOM triggers the direct impact
will be on mysqld process since it will be the
most memory consuming one.
Going forward will look into the detailed analysis made to tackle
the issue of OOM.
- Service – Group Replication Cluster
- Cluster Nodes – 3
- GR mode – Single Primary …