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centos7 mysql相互是主從+keepalived

2024-07-24 12:34:36
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         centos7 mysql互為主從+keepalived:

  一、互為主從配置
 
  1.1、資源情況
 
  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上修改賬戶密碼,創(chuàng)建同步賬戶
 
  # 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狀態(tài)
 
  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 status/G
 
  *************************** 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 status/G
 
  *************************** 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 status/G
 
  *************************** 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驗(yàn)證
 
  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驗(yàn)證
 
  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、腳本
 
  # 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、不搶占模式
 
  如果把server1設(shè)置為VIP不搶占模式,做下面修改
 
  server1
 
  # vi /etc/keepalived/keepalived.conf
 
  添加
 
  nopreempt   
 
  state MASTER
 
  >
 
  state BACKUP        
 
  #防止切換到從庫(kù)后,主keepalived恢復(fù)后自動(dòng)切換回主庫(kù)

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