I've been using the group_replication plugin with MySQL without issues before 5.7.24. With this version, the server starts up without the plugin because of failure. I confirmed it manually (see steps below) and it's definitely the new version it doesn't work with. I'd consider inspecting the file myself, but a binary doesn't offer much hacking opportunity.
Background on the plugin source: Since it doesn't come included with mysql-server but is well documented, I have obtained it from the Community Edition.
OS: Ubuntu 16.04.3 LTS (Xenial Xerus)
Steps to reproduce:
- Have /usr/lib/mysql/plugin/group_replication.so
Verify version is 5.7.23
$ mysql --version mysql Ver 14.14 Distrib 5.7.23, for Linux (x86_64) using EditLine wrapper
Install plugin successfully in 5.7.23
mysql> INSTALL PLUGIN group_replication SONAME 'group_replication.so'; Query OK, 0 rows affected (1 min 1.16 sec)
Upgrade to 5.7.24 (uninstall everything to do with 5.7.23 do make sure it gets loaded):
dpkg -l | grep mysql apt-get remove libmysqlclient20:amd64 mysql-client-core-5.7 mysql-common mysql-server apt-get install mysql-server $ mysql --version mysql Ver 14.14 Distrib 5.7.24, for Linux (x86_64) using EditLine wrapper
Witness plugin failing to load in 5.7.24:
mysql> INSTALL PLUGIN group_replication SONAME 'group_replication.so'; ERROR 1126 (HY000): Can't open shared library '/usr/lib/mysql/plugin/group_replication.so' (errno: 2 /usr/lib/mysql/plugin/group_replication.so: undefined symbol: _Z25group_replication_cleanupv)
Any idea what I can do to fix it, so I can bring replication back up?