I want to create a replica to my Percona Server with GTID enabled, but got this error when i show slave status:
Last_IO_Error: Got fatal error 1236 from master when reading data from binary log: 'The slave is connecting using CHANGE MASTER TO MASTER_AUTO_POSITION = 1, but the master has purged binary logs containing GTIDs that the slave requires.'
Normally, i would stop my slave, reset it, reset master (on the slave), and get new GTID_PURGED value from the master. But this time around, the master has a very unusual value(s) and i am not sure how to determine which one to use:
mysql> show master status\G
*************************** 1. row ***************************
File: mysqld-bin.000283
Position: 316137263
Binlog_Do_DB:
Binlog_Ignore_DB:
Executed_Gtid_Set: 1570dee1-165b-11e6-a4a2-00e081e93212:1-3537,
c73f3ee7-e8d4-ee19-6507-f898a9930ccd:1-18609,
cdb70eaa-f753-ee1b-5c95-ecb8024ae729:1-2357789559:2357789561-2357790104:2357790106-2514115701:2514115703-2514115705:2514115707-2546512667
1 row in set (0.00 sec)
From the slave with the new backup copy, i get this:
root@ubuntu:/var/lib/mysql# cat xtrabackup_binlog_info
mysqld-bin.000283 294922064 1570dee1-165b-11e6-a4a2-00e081e93212:1-3537,
c73f3ee7-e8d4-ee19-6507-f898a9930ccd:1-18609,
cdb70eaa-f753-ee1b-5c95-ecb8024ae729:1-2357789559:2357789561-2357790104:2357790106-2514115701:2514115703-2514115705:2514115707-2546400960
One more thing, i just purged the binary logs on the master before i made a backup. automatic binlog purge is set to 7 days. So i know its not because the bin log has been purged as the error is suggesting.
I am running Ubuntu 14:04, and Percona server version 5.6.31-77.
How can i resolve this issue? What is the correct value of the master's GTID_PURGED?
mysql 5.6 GTID replication errors and fixes What is GTID? 
4c2ad77f-697e-11e3-b2c3-c80aa9f17dc4
This is the server's 128 bit identification number (SERVER_UUID). It identifies where the transaction was originated. Every server has its own SERVER_UUID. What problems GTID solves?
It is possible to identify a transaction uniquely across the replication servers. Make the automation of failover process much easier. There is no need to do calculations, inspect the binary log and so on. Just MASTER_AUTO_POSITION=1.
Three variables are needed in ALL servers of the replication chain
Replication errors and fixes:
"'Got fatal error 1236 from master when reading data from binary log: "The slave is connecting using CHANGE MASTER TO MASTER_AUTO_POSITION = 1, but the master has purged binary logs containing GTIDs that the slave requires." slave_io thread stop running.
Resolution: Considering following are the master – slave UUID's
MASTER UUID: 4c2ad77f-697e-11e3-b2c3-c80aa9f17dc4
SLAVE UUID: 5b37def1-6189-11e3-bee0-e89a8f22a444
Steps:
slave>stop slave;
slave> FLUSH TABLES WITH READ LOCK;
slave>show master status;
'4c2ad77f-697e-11e3-b2c3-c80aa9f17dc4:1-83345127,5b37def1-6189-11e3-bee0-e89a8f22a444:1-13030:13032-13317:13322-13325:13328-653183:653185-654126:654128-1400817:1400820-3423394:3423401-5779965′
(HERE 83345127 Last GTID executed on master and 5779965 Last slave GTID executed on Master )
slave> reset master;
slave>set global GTID_PURGED='4c2ad77f-697e-11e3-b2c3-c80aa9f17dc4:1-83345127,5b37def1-6189-11e3-bee0-e89a8f22a444:1-5779965′;
slave>start slave;
slave>unlock tables;
slave>show slave status;
NOTE: After this Re-start slave other chain-slaves if they stop replicating;
ERROR: 'Error "Table … 'doesn"t exist" on query. Default database: …Query: "INSERT INTO OR Last_SQL_Error: ….Error 'Duplicate entry' SKIP Transaction on slave (slave_sql Thread stop running) NOTE:
Resolution: Considering following are the master – slave UUID's
MASTER UUID: 4c2ad77f-697e-11e3-b2c3-c80aa9f17dc4
SLAVE UUID: 5b37def1-6189-11e3-bee0-e89a8f22a444
slave>show slave status;
copy the 'Executed_Gtid_Set' value. '4c2ad77f-697e-11e3-b2c3-c80aa9f17dc4:1-659731804,5b37def1-6189-11e3-bee0-e89a8f22a444:1-70734947-80436012:80436021-80437839'
-Seems that slave (with uuid 5b37def1-6189-11e3-bee0-e89a8f22a444) transaction '80437840' is causing the problem here.
slave> STOP SLAVE;
slave> SET GTID_NEXT="5b37def1-6189-11e3-bee0-e89a8f22a444:80437840"; (last_executed_slave_gtid_on_master + 1)
slave> BEGIN; COMMIT;
slave> SET GTID_NEXT="AUTOMATIC";
slave> START SLAVE;
slave> show slave status;
and it's ALL SET !!!