从master使用 Percona xtrabackup 创建的备份恢复从属
在主 binlog 上设置为在 14 天后过期，并且此备份不到 24 小时
my.cnf（主）
expire_logs_days = 14
恢复脚本（从属）
service mysql stop
rm -r /var/lib/mysql/*
# backup is unzipped into /var/lib/mysql
xtrabackup --prepare --target-dir=/var/lib/mysql
chown -R mysql.mysql /var/lib/mysql
service mysql start
# get gtid
line=$(head -n 1 "/var/lib/mysql/xtrabackup_binlog_info")
gtid=$(echo $line | awk -F '[ ,]' '{print $3}')
mysql -u root -pPASS -e "reset master; SET GLOBAL gtid_purged='$gtid'; CHANGE MASTER TO MASTER_HOST='$master_host', MASTER_USER='repl', MASTER_PASSWORD='$master_pass', MASTER_AUTO_POSITION=1; start slave"
mysql -u root -pPASS -e "show slave status\G;"
地位
*************************** 1. row ***************************
Slave_IO_State:
Master_Host: server.com
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File:
Read_Master_Log_Pos: 4
Relay_Log_File: rep-relay-bin.000001
Relay_Log_Pos: 4
Relay_Master_Log_File:
Slave_IO_Running: No
Slave_SQL_Running: Yes
Replicate_Do_DB: mydb
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 0
Relay_Log_Space: 154
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 1236
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. Replicate the missing transactions from elsewhere, or provision a new slave from backup. Consider increasing the master's binary log expiration period. The GTID sets and the missing purged transactions are too long to print in this message. For more information, please see the master's error log or the manual for GTID_SUBTRACT.'
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 1
Master_UUID: fe51e8df-b7c4-11e9-be21-4061862b8d34
Master_Info_File: /mnt/HC_Volume_8355755/mysql/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp: 210211 10:50:32
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set: 3ccc2392-45ed-11e7-bc98-4061862b8d34:1-35942477,
94bb04d3-6c4e-11eb-8631-96000080ccbb:1-2
Auto_Position: 1
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
/var/lib/mysql/xtrabackup_binlog_info
mysql-bin.000025 217141189 3ccc2392-45ed-11e7-bc98-4061862b8d34:1-35942477,
fe51e8df-b7c4-11e9-be21-4061862b8d34:1-25059775
gtid从文件中提取的值：3ccc2392-45ed-11e7-bc98-4061862b8d34:1-35942477
更新
还尝试/var/lib/mysql/xtrabackup_binlog_info通过执行来获取第二个 uid
gtid=$(tail -n 1 "$mysql_dir/xtrabackup_binlog_info")
没有任何效果..同样的错误
更新 2
show master status在主返回
3ccc2392-45ed-11e7-bc98-4061862b8d34:1-35942477,
fe51e8df-b7c4-11e9-be21-4061862b8d34:1-25203198
