Description:
Hello Team,
I was testing the migration from the Mysql Innodb cluster commercial version to MySQL CE(Community Edition).
While adding the MySQL CE node to the cluster by opting for the option of clone plugin it fails with the below error
ERROR: The clone process has failed: Clone Donor MySQL version: 8.0.21-commercial is different from Recipient MySQL version 8.0.21. (3864)
Cluster.addInstance: Clone Donor MySQL version: 8.0.21-commercial is different from Recipient MySQL version 8.0.21. (RuntimeError)
Error Log:
2022-10-15T10:34:29.081932Z 32 [System] [MY-010597] [Repl] 'CHANGE MASTER TO FOR CHANNEL 'group_replication_recovery' executed'. Previous state master_host='', master_port= 3306, master_log_file='', master_log_pos= 4, master_bind=''. New state master_host='', master_port= 3306, master_log_file='', master_log_pos= 4, master_bind=''.
2022-10-15T10:34:29.140152Z 32 [System] [MY-013587] [Repl] Plugin group_replication reported: 'Plugin 'group_replication' is starting.'
2022-10-15T10:34:29.489506Z 35 [System] [MY-010597] [Repl] 'CHANGE MASTER TO FOR CHANNEL 'group_replication_applier' executed'. Previous state master_host='<NULL>', master_port= 0, master_log_file='', master_log_pos= 4, master_bind=''. New state master_host='<NULL>', master_port= 0, master_log_file='', master_log_pos= 4, master_bind=''.
2022-10-15T10:34:37.634289Z 32 [System] [MY-011511] [Repl] Plugin group_replication reported: 'This server is working as secondary member with primary member address 192.168.56.10:3306.'
2022-10-15T10:34:38.631821Z 0 [Warning] [MY-013469] [Repl] Plugin group_replication reported: 'This member will start distributed recovery using clone. It is due to the number of missing transactions being higher than the configured threshold of 1.'
2022-10-15T10:34:39.681593Z 0 [System] [MY-013471] [Repl] Plugin group_replication reported: 'Distributed recovery will transfer data using: Cloning from a remote group donor.'
2022-10-15T10:34:39.682299Z 0 [System] [MY-011503] [Repl] Plugin group_replication reported: 'Group membership changed to 192.168.56.30:3306, 192.168.56.20:3306, 192.168.56.10:3306 on view 16658272789450654:5.'
2022-10-15T10:34:39.689525Z 45 [System] [MY-011566] [Repl] Plugin group_replication reported: 'Setting super_read_only=OFF.'
2022-10-15T10:34:42.135975Z 45 [ERROR] [MY-011569] [Repl] Plugin group_replication reported: 'Internal query: CLONE INSTANCE FROM 'mysql_innodb_cluster_3'@'192.168.56.10':3306 IDENTIFIED BY '*****' REQUIRE SSL; result in error. Error number: 3864'
2022-10-15T10:34:42.136111Z 44 [ERROR] [MY-013465] [Repl] Plugin group_replication reported: 'There was an issue when cloning from another server: Error number: 3864 Error message: Clone Donor MySQL version: 8.0.21-commercial is different from Recipient MySQL version 8.0.21.'
2022-10-15T10:34:42.684680Z 45 [ERROR] [MY-011569] [Repl] Plugin group_replication reported: 'Internal query: CLONE INSTANCE FROM 'mysql_innodb_cluster_3'@'192.168.56.20':3306 IDENTIFIED BY '*****' REQUIRE SSL; result in error. Error number: 3864'
2022-10-15T10:34:42.684741Z 44 [ERROR] [MY-013465] [Repl] Plugin group_replication reported: 'There was an issue when cloning from another server: Error number: 3864 Error message: Clone Donor MySQL version: 8.0.21-commercial is different from Recipient MySQL version 8.0.21.'
2022-10-15T10:34:42.830595Z 45 [System] [MY-011565] [Repl] Plugin group_replication reported: 'Setting super_read_only=ON.'
2022-10-15T10:34:42.830660Z 44 [Warning] [MY-013472] [Repl] Plugin group_replication reported: 'Due to some issue on the previous step distributed recovery is now executing: Incremental Recovery.'
2022-10-15T10:34:43.390532Z 48 [System] [MY-010597] [Repl] 'CHANGE MASTER TO FOR CHANNEL 'group_replication_recovery' executed'. Previous state master_host='', master_port= 3306, master_log_file='', master_log_pos= 4, master_bind=''. New state master_host='192.168.56.10', master_port= 3306, master_log_file='', master_log_pos= 4, master_bind=''.
2022-10-15T10:34:43.539506Z 49 [Warning] [MY-010897] [Repl] Storing MySQL user name or password information in the master info repository is not secure and is therefore not recommended. Please consider using the USER and PASSWORD connection options for START SLAVE; see the 'START SLAVE Syntax' in the MySQL Manual for more information.
2022-10-15T10:34:43.686094Z 49 [System] [MY-010562] [Repl] Slave I/O thread for channel 'group_replication_recovery': connected to master 'mysql_innodb_cluster_3@192.168.56.10:3306',replication started in log 'FIRST' at position 4
2022-10-15T10:34:49.038991Z 48 [System] [MY-010597] [Repl] 'CHANGE MASTER TO FOR CHANNEL 'group_replication_recovery' executed'. Previous state master_host='192.168.56.10', master_port= 3306, master_log_file='', master_log_pos= 4, master_bind=''. New state master_host='<NULL>', master_port= 0, master_log_file='', master_log_pos= 4, master_bind=''.
2022-10-15T10:34:49.191047Z 0 [System] [MY-011490] [Repl] Plugin group_replication reported: 'This server was declared online within the replication group.'
2022-10-15T10:36:32.834990Z 52 [System] [MY-010597] [Repl] 'CHANGE MASTER TO FOR CHANNEL 'group_replication_recovery' executed'. Previous state master_host='<NULL>', master_port= 0, master_log_file='', master_log_pos= 4, master_bind=''. New state master_host='<NULL>', master_port= 0, master_log_file='', master_log_pos= 4, master_bind=''.
How to repeat:
Adding the MySQL CE node to the commercial InnoDB cluster can help in repeating the bug.
Suggested fix:
I think this should be documented in the limitation of the clone plugin.
https://dev.mysql.com/doc/refman/8.0/en/clone-plugin-limitations.html
