percona-xtrabackup工具實現mysql5.6.34的主從同步復制

下載并安裝percona-xtrabackup工具

# wget https://www.percona.com/downloads/XtraBackup/Percona-XtraBackup-2.4.7/binary/redhat/6/x86_64/percona-xtrabackup-24-2.4.7-1.el6.x86_64.rpm

#yum localinstall -y percona-xtrabackup-24-2.4.7-1.el6.x86_64.rpm

1.備份，將mysql數據庫整個備份到/opt/目錄下

# innobackupex --defaults-file="/etc/my.cnf" --user=root -proot --socket=/tmp/mysql.sock /opt

2.預處理，進行事物檢查(也可以拷貝到從庫后再進行檢查)

# innobackupex --defaults-file="/etc/my.cnf" --user=root -proot --socket=/tmp/mysql.sock --apply-log --use-memory=1G /opt/2017-05-18_00-13-42/

3.scp到從庫

[root@centossz008 ~]# scp -r /opt/2017-05-18_01-34-42/ 192.168.3.13:/opt

4.關閉從庫，清理從庫數據，恢復數據到從庫

/etc/init.d/mysqld stop

刪除從庫的數據和日志信息

[root@node5 ~]# rm -rf /data/mydata/*[root@node5 ~]# rm -rf /data/binlogs/*

[root@node5 ~]# rm -rf /data/relaylogs/*

在從庫上執行(將數據恢復到數據庫中)

[root@node5 ~]# innobackupex --defaults-file="/etc/my.cnf" --user=root --socket=/tmp/mysql.sock --move-back /opt/2017-05-18_01-34-42/

5.修改權限，啟動從庫

[root@node5 mydata]# chown -R mysql.mysql /data

[root@node5 mydata]#/etc/init.d/mysqld start

查看主庫中master位置

[root@node5 mydata]# cat /opt/2017-05-18_01-34-42/xtrabackup_binlog_info

master-bin.000002 191 4c6237f8-a7da-11e6-9966-000c29f333f8:1-2

6.主庫中創建建salve同步用戶

mysql> grant replication slave,reload,super on *.* to repluser@192.168.3.13 identified by 'replpass';

mysql> FLUSH PRIVILEGES;

7.從庫執行同步

mysql> change master to master_host='192.168.3.12',master_user='repluser',master_password='replpass',master_log_file='master-bin.000002',master_log_pos=191;

mysql>start slave;

mysql>show slave status\G*************************** 1. row ***************************Slave_IO_State: Waitingformaster to send event

Master_Host:192.168.3.12Master_User: repluser

Master_Port:3306Connect_Retry:60Master_Log_File: master-bin.000002Read_Master_Log_Pos:586Relay_Log_File: relay-bin.000002Relay_Log_Pos:710Relay_Master_Log_File: master-bin.000002Slave_IO_Running: Yes # 表示配置成功

Slave_SQL_Running: Yes

Replicate_Do_DB:

Replicate_Ignore_DB:

Replicate_Do_Table:

Replicate_Ignore_Table:

Replicate_Wild_Do_Table:

Replicate_Wild_Ignore_Table:

Last_Errno:0Last_Error:

Skip_Counter:0Exec_Master_Log_Pos:586Relay_Log_Space:908Until_Condition: None

Until_Log_File:

Until_Log_Pos:0Master_SSL_Allowed: No

Master_SSL_CA_File:

Master_SSL_CA_Path:

Master_SSL_Cert:

Master_SSL_Cipher:

Master_SSL_Key:

Seconds_Behind_Master:0Master_SSL_Verify_Server_Cert: No

Last_IO_Errno:0Last_IO_Error:

Last_SQL_Errno:0Last_SQL_Error:

Replicate_Ignore_Server_Ids:

Master_Server_Id:100Master_UUID: 4c6237f8-a7da-11e6-9966-000c29f333f8

Master_Info_File:/data/mydata/master.infoSQL_Delay:0SQL_Remaining_Delay: NULL

Slave_SQL_Running_State: Slave has read all relay log; waitingfor the slave I/O thread to update it

Master_Retry_Count:86400Master_Bind:

Last_IO_Error_Timestamp:

Last_SQL_Error_Timestamp:

Master_SSL_Crl:

Master_SSL_Crlpath:

Retrieved_Gtid_Set: 4c6237f8-a7da-11e6-9966-000c29f333f8:3-4Executed_Gtid_Set: 4c6237f8-a7da-11e6-9966-000c29f333f8:3-4Auto_Position:0

1 row in set (0.00 sec)

延遲復制：

啟用方法：

mysql>stop slave;

mysql> change master to master_delay=600;

mysql> start slave;

應用場景：

1.誤刪除恢復

2.延遲測試(當有延遲時業務是否會受影響)

3.歷史查詢

***************************

mysql master 配置

[root@centossz008 ~]# cat /etc/my.cnf

[client]

port= 3306socket= /tmp/mysql.sock

default-character-set =utf8mb4

[mysqld]

port= 3306innodb_file_per_table= 1binlog-format=ROW

log-slave-updates=truegtid-mode=on

enforce-gtid-consistency=truemaster-info-repository=filerelay-log-info-repository=file

sync-master-info=1slave-parallel-workers=4binlog-checksum=CRC32

master-verify-checksum=1slave-sql-verify-checksum=1binlog-rows-query-log_events=1server-id=100report-port=3306log-bin=/data/binlogs/master-bin

max_binlog_size=200M

datadir=/data/mydata

socket=/tmp/mysql.sock

sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

init-connect = 'SET NAMES utf8mb4'character-set-server =utf8mb4

skip-name-resolve

skip-external-locking

back_log= 300max_connections= 1024max_connect_errors= 6000open_files_limit= 65535table_open_cache= 128max_allowed_packet=4M

binlog_cache_size=1M

max_heap_table_size=8M

tmp_table_size=16M

read_buffer_size=2M

read_rnd_buffer_size=8M

sort_buffer_size=8M

join_buffer_size=8M

key_buffer_size=4M

thread_cache_size= 8query_cache_type= 1query_cache_size=16M

query_cache_limit=2M

ft_min_word_len= 4expire_logs_days= 10performance_schema= 0explicit_defaults_for_timestamp

default_storage_engine=InnoDB

innodb_open_files= 500innodb_buffer_pool_size=64M

innodb_write_io_threads= 4innodb_read_io_threads= 4innodb_thread_concurrency= 4innodb_purge_threads= 1innodb_flush_log_at_trx_commit= 2innodb_log_buffer_size=2M

innodb_log_file_size=32M

innodb_log_files_in_group= 3innodb_max_dirty_pages_pct= 90innodb_lock_wait_timeout= 120bulk_insert_buffer_size=8M

myisam_sort_buffer_size=8M

myisam_max_sort_file_size=512M

myisam_repair_threads= 1interactive_timeout= 28800wait_timeout= 28800[mysqldump]

quick

max_allowed_packet=16M

[myisamchk]

key_buffer_size=8M

sort_buffer_size=8M

read_buffer=4M

write_buffer= 4M

******************

mysql slave 配置

[root@node5 src]# cat /etc/my.cnf

[client]

port= 3306socket= /tmp/mysql.sock

default-character-set =utf8mb4

[mysqld]

port= 3306innodb_file_per_table= 1binlog-format=ROW

log-slave-updates=truegtid-mode=on

enforce-gtid-consistency=truemaster-info-repository=filerelay-log-info-repository=file

sync-master-info=1slave-parallel-workers=4binlog-checksum=CRC32

master-verify-checksum=1slave-sql-verify-checksum=1binlog-rows-query-log_events=1server-id=200report-port=3306log-bin=/data/binlogs/master-bin

relay-log=/data/relaylogs/relay-bin

max_binlog_size=200M

datadir=/data/mydata

socket=/tmp/mysql.sock

sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

init-connect = 'SET NAMES utf8mb4'character-set-server =utf8mb4

skip-name-resolve

skip-external-locking

back_log= 300max_connections= 1024max_connect_errors= 6000open_files_limit= 65535table_open_cache= 128max_allowed_packet=4M

binlog_cache_size=1M

max_heap_table_size=8M

tmp_table_size=16M

read_buffer_size=2M

read_rnd_buffer_size=8M

sort_buffer_size=8M

join_buffer_size=8M

key_buffer_size=4M

thread_cache_size= 8query_cache_type= 1query_cache_size=16M

query_cache_limit=2M

ft_min_word_len= 4expire_logs_days= 10performance_schema= 0explicit_defaults_for_timestamp

default_storage_engine=InnoDB

innodb_open_files= 500innodb_buffer_pool_size=64M

innodb_write_io_threads= 4innodb_read_io_threads= 4innodb_thread_concurrency= 4innodb_purge_threads= 1innodb_flush_log_at_trx_commit= 2innodb_log_buffer_size=2M

innodb_log_file_size=32M

innodb_log_files_in_group= 3innodb_max_dirty_pages_pct= 90innodb_lock_wait_timeout= 120bulk_insert_buffer_size=8M

myisam_sort_buffer_size=8M

myisam_max_sort_file_size=512M

myisam_repair_threads= 1interactive_timeout= 28800wait_timeout= 28800[mysqldump]

quick

max_allowed_packet=16M

[myisamchk]

key_buffer_size=8M

sort_buffer_size=8M

read_buffer=4M

write_buffer= 4M

*********************

cenos6上啟動mysql服務報錯：

070517 23:08:52 mysqld_safe Starting mysqld daemon with databases from /data/mydata

2107-05-17 23:08:56 0 [ERROR] This MySQL server doesn't support dates later then 2038

2107-05-17 23:08:56 0 [ERROR] Aborting

將時間修改為1年前，即可啟動，啟動完成后改回時間即可

總結

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