centos7 mysql相互是主从+keepalived
发布时间：2022-06-25 04:29:05 所属栏目：MySql教程 来源：互联网
导读：centos7 mysql互为主从+keepalived： 一、互为主从配置 1.1、资源情况 192.168.11.177 server1 192.168.11.180 server2 192.168.11.210 VIP 1.2、server1配置 # vi /etc/my.cnf [mysqld] server-id=1 log-bin=mysql-bin relay_log=mysql-realy-bin relay_l
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centos7 mysql互为主从+keepalived： 一、互为主从配置 1.1、资源情况 192.168.11.177 server1 192.168.11.180 server2 192.168.11.210 VIP 1.2、server1配置 # vi /etc/my.cnf [mysqld] server-id=1 log-bin=mysql-bin relay_log=mysql-realy-bin relay_log_index=slave-mysql-realy-bin.index expire_logs_days=15 binlog_format=mixed auto-increment-increment=2 auto-increment-offset= 1 innodb_flush_log_at_trx_commit=1 replicate-ignore-db=sys replicate-ignore-db=mysql replicate-ignore-db=information_schema replicate-ignore-db=performance_schema datadir=/data/mysql_data socket=/var/lib/mysql/mysql.sock character_set_server=utf8 sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION' # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid # innodb optimization innodb_buffer_pool_size=8G innodb_log_file_size=256M innodb_flush_method=O_DIRECT max_connections=500 innodb_autoextend_increment=128 1.3、server2配置 # vi /etc/my.cnf server-id=2 log-bin=mysql-bin relay_log=mysql-realy-bin relay_log_index=slave-realy-bin.index expire_logs_days=15 binlog_format=mixed auto-increment-increment=2 auto-increment-offset= 2 innodb_flush_log_at_trx_commit=1 replicate-ignore-db=sys replicate-ignore-db=mysql replicate-ignore-db=information_schema replicate-ignore-db=performance_schema datadir=/data/mysql_data socket=/var/lib/mysql/mysql.sock character_set_server=utf8 sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION' # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid # innodb optimization innodb_buffer_pool_size=8G innodb_log_file_size=256M innodb_flush_method=O_DIRECT max_connections=500 innodb_autoextend_increment=128 1.4、server1、server2上修改账户密码，创建同步账户 # mysql -p mysql> set password=password('******'); mysql> create user repluser@'%' identified by '******'; mysql> grant replication slave, replication client on *.* to repluser@'%'; 1.5、server2建立同步 server1的master状态 mysql> show master status; +------------------+----------+--------------+------------------+-------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set | +------------------+----------+--------------+------------------+-------------------+ | mysql-bin.000003 | 882 | | | | +------------------+----------+--------------+------------------+-------------------+ mysql> CHANGE MASTER TO MASTER_HOST='192.168.11.177', MASTER_USER='repluser', MASTER_PASSWORD='******', MASTER_LOG_FILE='mysql-bin.000003', MASTER_LOG_POS=882; Query OK, 0 rows affected, 2 warnings (0.10 sec) mysql> show slave statusG *************************** 1. row *************************** Slave_IO_State: Master_Host: 192.168.11.177 Master_User: repluser Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000003 Read_Master_Log_Pos: 882 Relay_Log_File: mysql-realy-bin.000001 Relay_Log_Pos: 4 Relay_Master_Log_File: mysql-bin.000003 Slave_IO_Running: No Slave_SQL_Running: No Replicate_Do_DB: Replicate_Ignore_DB: sys,mysql,information_schema,performance_schema 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: 882 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: NULL Master_SSL_Verify_Server_Cert: No Last_IO_Errno: 0 Last_IO_Error: Last_SQL_Errno: 0 Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 0 Master_UUID: Master_Info_File: /data/mysql_data/master.info SQL_Delay: 0 SQL_Remaining_Delay: NULL Slave_SQL_Running_State: Master_Retry_Count: 86400 Master_Bind: Last_IO_Error_Timestamp: Last_SQL_Error_Timestamp: Master_SSL_Crl: Master_SSL_Crlpath: Retrieved_Gtid_Set: Executed_Gtid_Set: Auto_Position: 0 Replicate_Rewrite_DB: Channel_Name: Master_TLS_Version: 1 row in set (0.00 sec) # vi /data/mysql_data/auto.cnf [auto] server-uuid=cbcefb67-9f9a-11e8-91b3-06ba24001d86 > server-uuid=cbcefb77-9f9a-11e8-91b3-06ba24001d86 mysql> show slave statusG *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.11.177 Master_User: repluser Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000003 Read_Master_Log_Pos: 882 Relay_Log_File: mysql-realy-bin.000003 Relay_Log_Pos: 320 Relay_Master_Log_File: mysql-bin.000003 Slave_IO_Running: Yes Slave_SQL_Running: Yes Replicate_Do_DB: Replicate_Ignore_DB: sys,mysql,information_schema,performance_schema 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: 882 Relay_Log_Space: 527 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: 0 Last_IO_Error: Last_SQL_Errno: 0 Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 1 Master_UUID: cd146946-9f95-11e8-9a29-063696001d83 Master_Info_File: /data/mysql_data/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: Last_SQL_Error_Timestamp: Master_SSL_Crl: Master_SSL_Crlpath: Retrieved_Gtid_Set: Executed_Gtid_Set: Auto_Position: 0 Replicate_Rewrite_DB: Channel_Name: Master_TLS_Version: 1 row in set (0.00 sec) mysql> start slave; mysql> show master status; +------------------+----------+--------------+------------------+-------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set | +------------------+----------+--------------+------------------+-------------------+ | mysql-bin.000003 | 154 | | | | +------------------+----------+--------------+------------------+-------------------+ 1.6、server1建立同步 mysql> CHANGE MASTER TO MASTER_HOST='192.168.11.180', MASTER_USER='repluser', MASTER_PASSWORD='******', MASTER_LOG_FILE='mysql-bin.000003', MASTER_LOG_POS=154; Query OK, 0 rows affected, 2 warnings (0.22 sec) mysql> start slave; Query OK, 0 rows affected (0.01 sec) mysql> show slave statusG *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.11.180 Master_User: repluser Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000003 Read_Master_Log_Pos: 154 Relay_Log_File: mysql-realy-bin.000002 Relay_Log_Pos: 320 Relay_Master_Log_File: mysql-bin.000003 Slave_IO_Running: Yes Slave_SQL_Running: Yes Replicate_Do_DB: Replicate_Ignore_DB: sys,mysql,information_schema,performance_schema 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: 154 Relay_Log_Space: 527 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: 0 Last_IO_Error: Last_SQL_Errno: 0 Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 2 Master_UUID: cbcefb67-9f9a-11e8-91b3-06ba24001d86 Master_Info_File: /data/mysql_data/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: Last_SQL_Error_Timestamp: Master_SSL_Crl: Master_SSL_Crlpath: Retrieved_Gtid_Set: Executed_Gtid_Set: Auto_Position: 0 Replicate_Rewrite_DB: Channel_Name: Master_TLS_Version: 1 row in set (0.00 sec) mysql> create database ceshi_db; Query OK, 1 row affected (0.01 sec) mysql> use ceshi_db1; Database changed mysql> create table home(id int(10) not null,name char(10)); Query OK, 0 rows affected (0.14 sec) 1.7、server2验证 mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | ceshi_db | | mysql | | performance_schema | | sys | +--------------------+ 5 rows in set (0.00 sec) mysql> use ceshi_db; Database changed mysql> show tables; +--------------------+ | Tables_in_ceshi_db | +--------------------+ | home | +--------------------+ 1 row in set (0.00 sec) mysql> create database ceshi_db1; Query OK, 1 row affected (0.01 sec) mysql> create table home(id int(10) not null,name char(10));^C mysql> use ceshi_db1; Database changed mysql> create table home(id int(10) not null,name char(10)); Query OK, 0 rows affected (0.09 sec) 1.8、server1验证 mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | ceshi_db | | ceshi_db1 | | mysql | | performance_schema | | sys | +--------------------+ 6 rows in set (0.00 sec) mysql> use ceshi_db1; Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed mysql> show tables; +---------------------+ | Tables_in_ceshi_db1 | +---------------------+ | home | +---------------------+ 1 row in set (0.00 sec) 二、keepalived配置 2.1、server1配置 # cat /etc/keepalived/keepalived.conf global_defs { smtp_server 127.0.0.1 smtp_connect_timeout 30 router_id mysql-1 } vrrp_script chk_mysql { script "/etc/keepalived/scripts/mysql_check.sh" interval 2 weight -5 fall 2 rise 1 } vrrp_instance VI_1 { state MASTER interface eth0 virtual_router_id 61 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 1111 } track_script { chk_mysql } virtual_ipaddress { 182.168.11.210 } } 2.2、server2配置 # cat /etc/keepalived/keepalived.conf global_defs { smtp_server 127.0.0.1 smtp_connect_timeout 30 router_id mysql-2 } vrrp_script chk_mysql { script "/etc/keepalived/scripts/mysql_check.sh" interval 2 weight -5 fall 2 rise 1 } vrrp_instance VI_1 { state BACKUP interface eth0 virtual_router_id 61 priority 99 advert_int 1 authentication { auth_type PASS auth_pass 1111 } track_script { chk_mysql } virtual_ipaddress { 182.168.11.210 } } 2.3、脚本 # cat /etc/keepalived/scripts/mysql_check.sh #!/bin/bash counter=$(netstat -na|grep "LISTEN"|grep "3306"|wc -l) if [ "${counter}" -eq 0 ]; then service keepalived stop fi 2.4、不抢占模式 如果把server1设置为VIP不抢占模式，做下面修改 server1 # vi /etc/keepalived/keepalived.conf 添加 nopreempt state MASTER > state BACKUP #防止切换到从库后，主keepalived恢复后自动切换回主库 （编辑：云计算网_宿迁站长网） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |
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