The checklist for operating MySQL Group Replication

MySQL Group Replication is a plugin for MySQL that allows you to create a group of MySQL servers that work together to provide a replicated and highly available environment. Here is an overview of how to use MySQL Group Replication:

1. First, you will need to install and configure a group of MySQL servers. Each server should have the MySQL Group Replication plugin installed and configured.
2. Next, you will need to create a group of servers using the group_replication_start function provided by the MySQL Group Replication plugin. This function takes a group name and a list of server addresses as its arguments.
3. Once the group of servers has been created, you will need to configure the replication settings for the group. This typically involves setting the group_replication_group_seeds option to the list of server addresses in the group, and configuring other options such as group_replication_local_address, group_replication_group_name, group_replication_single_primary_mode, etc.
4. Once the group has been configured, you can create tables and insert data into them.
5. You can check the status of the group replication by running the command SHOW STATUS LIKE ‘group_replication_%’ on any of the servers, this command will give you information about the group such as the group members, their status and other details.
6. You can also use SHOW PROCESSLIST to check the replication status, this command will show you the threads that are running and their state.
7. To stop replication and remove the server from the group you can use the function group_replication_stop()

Please note that this is a basic overview and you should refer to the MySQL Group Replication documentation for more detailed information about how to configure and use the plugin. Additionally, it’s important to test the replication and to have a good understanding of the replication topology, data consistency and the recovery process before implementing this in production.