环境

  1. manager		192.168.137.141
  2. master1		192.168.137.144
  3. master2		192.168.137.145
  4. slave		192.168.137.141
  5. vip			192.168.137.199

部署

三台机器已安装mysql。

百度云:链接：https://pan.baidu.com/s/1an3QjoFFdqcjo5-KWRCShw 密码：wsq9

  1. 192.168.137.141
  2. mha4mysql-manager-0.55-0.el6.noarch.rpm
  3. mha4mysql-node-0.54-0.el6.noarch.rpm
  4.  
  5. 192.168.137.144
  6. 192.168.137.145
  7. mha4mysql-node-0.54-0.el6.noarch.rpm

依赖

链接：https://pan.baidu.com/s/1mTcoBiUsvATQMkM3bXJKrA 密码：rpvq

  1.  yum install perl perl-ExtUtils-CBuilder perl-ExtUtils-MakeMaker perl-CPAN perl-DBD-MySQL

都要安装。

主模块1:配置集群之前SSH免密码登录

两步完成ssh免密码登录

  1. 192.168.137.141  -->  192.168.137.144
  2. 192.168.137.141  -->  192.168.137.145
  3.  
  4. 192.168.137.144  -->  192.168.137.141
  5. 192.168.137.144  -->  192.168.137.145
  6.  
  7. 192.168.137.145  -->  192.168.137.141
  8. 192.168.137.145  -->  192.168.137.144
  9.  
  10. 6次

主模块2:配置集群主从复制

mysql主备部署[高可用]

  1. master:		192.168.137.144
  2. slave:		192.168.137.145
  3.  
  4. master:		192.168.137.144
  5. slave:		192.168.137.141

主模块3:manager配置

  1. mkdir -p /etc/masterha
  2.  
  3. cd /etc/masterha
  4.  
  5. vim app1.cnf

app1.cnf

  1. [server default]
  2. user=root
  3. password=lizhenghua
  4. manager_workdir=/etc/masterha
  5. manager_log=/etc/masterha/logs/manager.log
  6. remote_workdir=/etc/masterha
  7. ssh_user=root
  8. repl_user=sync
  9. repl_password=sync
  10. ping_interval=3
  11. #master_ip_online_change_script=/etc/masterha/script/master_ip_online_change
  12. master_ip_failover_script=/etc/masterha/script/master_ip_failover
  13. #report_script=/etc/masterha/script/sendMail_report
  14. [server1]
  15. hostname=192.168.137.144
  16. port=3306
  17. master_binlog_dir=/usr/local/mysql/data/
  18. candidate_master=1
  19. [server2]
  20. hostname=192.168.137.145
  21. port=3306
  22. master_binlog_dir=/usr/local/mysql/data/
  23. candidate_master=1
  24. [server3]
  25. hostname=192.168.137.141
  26. port=3306
  27. master_binlog_dir=/usr/local/mysql/data/
  28. candidate_master=1

副模块1:检测SSH

  1. masterha_check_ssh --conf=/etc/masterha/app1.cnf

模块2:检测主从

  1. masterha_check_repl --conf=/etc/masterha/app1.cnf

manager启动方式

  1. vim start.sh
  2.  
  3. #!/usr/bin/bash
  4. nohup perl /root/perl5/bin/masterha_manager --conf=/etc/masterha/conf/app1.cnf &

功能测试

192.168.137.141

  1. mysql> show slave status \G\
  2. *************************** 1. row ***************************
  3.                Slave_IO_State: Waiting for master to send event
  4.                   Master_Host: 192.168.137.144
  5.                   Master_User: sync
  6.                   Master_Port: 3306
  7.                 Connect_Retry: 60
  8.               Master_Log_File: mysql-bin.000003
  9.           Read_Master_Log_Pos: 154
  10.                Relay_Log_File: mysql-relay-bin.000004
  11.                 Relay_Log_Pos: 367
  12.         Relay_Master_Log_File: mysql-bin.000003
  13.              Slave_IO_Running: Yes
  14.             Slave_SQL_Running: Yes
  15.               Replicate_Do_DB:
  16.           Replicate_Ignore_DB:
  17.            Replicate_Do_Table:
  18.        Replicate_Ignore_Table:
  19.       Replicate_Wild_Do_Table:
  20.   Replicate_Wild_Ignore_Table:
  21.                    Last_Errno: 0
  22.                    Last_Error:
  23.                  Skip_Counter: 0
  24.           Exec_Master_Log_Pos: 154
  25.               Relay_Log_Space: 740
  26.               Until_Condition: None
  27.                Until_Log_File:
  28.                 Until_Log_Pos: 0
  29.            Master_SSL_Allowed: No
  30.            Master_SSL_CA_File:
  31.            Master_SSL_CA_Path:
  32.               Master_SSL_Cert:
  33.             Master_SSL_Cipher:
  34.                Master_SSL_Key:
  35.         Seconds_Behind_Master: 0
  36. Master_SSL_Verify_Server_Cert: No
  37.                 Last_IO_Errno: 0
  38.                 Last_IO_Error:
  39.                Last_SQL_Errno: 0
  40.                Last_SQL_Error:
  41.   Replicate_Ignore_Server_Ids:
  42.              Master_Server_Id: 144
  43.                   Master_UUID: 9abbdca0-424e-11e8-a71a-000c29deb434
  44.              Master_Info_File: /usr/local/mysql/data/master.info
  45.                     SQL_Delay: 0
  46.           SQL_Remaining_Delay: NULL
  47.       Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
  48.            Master_Retry_Count: 86400
  49.                   Master_Bind:
  50.       Last_IO_Error_Timestamp:
  51.      Last_SQL_Error_Timestamp:
  52.                Master_SSL_Crl:
  53.            Master_SSL_Crlpath:
  54.            Retrieved_Gtid_Set:
  55.             Executed_Gtid_Set:
  56.                 Auto_Position: 0
  57.          Replicate_Rewrite_DB:
  58.                  Channel_Name:
  59.            Master_TLS_Version:
  60. 1 row in set (0.00 sec)

kill掉192.168.137.144机器上的mysql, 然后141开始切换master

  1. mysql> show slave status \G\
  2. *************************** 1. row ***************************
  3.                Slave_IO_State: Waiting for master to send event
  4.                   Master_Host: 192.168.137.145
  5.                   Master_User: sync
  6.                   Master_Port: 3306
  7.                 Connect_Retry: 60
  8.               Master_Log_File: mysql-bin.000003
  9.           Read_Master_Log_Pos: 154
  10.                Relay_Log_File: mysql-relay-bin.000002
  11.                 Relay_Log_Pos: 320
  12.         Relay_Master_Log_File: mysql-bin.000003
  13.              Slave_IO_Running: Yes
  14.             Slave_SQL_Running: Yes
  15.               Replicate_Do_DB:
  16.           Replicate_Ignore_DB:
  17.            Replicate_Do_Table:
  18.        Replicate_Ignore_Table:
  19.       Replicate_Wild_Do_Table:
  20.   Replicate_Wild_Ignore_Table:
  21.                    Last_Errno: 0
  22.                    Last_Error:
  23.                  Skip_Counter: 0
  24.           Exec_Master_Log_Pos: 154
  25.               Relay_Log_Space: 527
  26.               Until_Condition: None
  27.                Until_Log_File:
  28.                 Until_Log_Pos: 0
  29.            Master_SSL_Allowed: No
  30.            Master_SSL_CA_File:
  31.            Master_SSL_CA_Path:
  32.               Master_SSL_Cert:
  33.             Master_SSL_Cipher:
  34.                Master_SSL_Key:
  35.         Seconds_Behind_Master: 0
  36. Master_SSL_Verify_Server_Cert: No
  37.                 Last_IO_Errno: 0
  38.                 Last_IO_Error:
  39.                Last_SQL_Errno: 0
  40.                Last_SQL_Error:
  41.   Replicate_Ignore_Server_Ids:
  42.              Master_Server_Id: 145
  43.                   Master_UUID: 9abbdca0-424e-11e8-a71a-000c29deb433
  44.              Master_Info_File: /usr/local/mysql/data/master.info
  45.                     SQL_Delay: 0
  46.           SQL_Remaining_Delay: NULL
  47.       Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
  48.            Master_Retry_Count: 86400
  49.                   Master_Bind:
  50.       Last_IO_Error_Timestamp:
  51.      Last_SQL_Error_Timestamp:
  52.                Master_SSL_Crl:
  53.            Master_SSL_Crlpath:
  54.            Retrieved_Gtid_Set:
  55.             Executed_Gtid_Set:
  56.                 Auto_Position: 0
  57.          Replicate_Rewrite_DB:
  58.                  Channel_Name:
  59.            Master_TLS_Version:
  60. 1 row in set (0.00 sec)

manager上日志

切换成功!

主模块3:VIP

master_ip_failover

  1. #!/usr/bin/env perl
  2.  
  3. use strict;
  4. use warnings FATAL => 'all';
  5.  
  6. use Getopt::Long;
  7.  
  8. my (
  9.     $command,          $ssh_user,        $orig_master_host, $orig_master_ip,
  10.     $orig_master_port, $new_master_host, $new_master_ip,    $new_master_port
  11. );
  12.  
  13. my $vip = '192.168.137.199/24';
  14. my $key = '0';
  15. my $ssh_start_vip = "/usr/sbin/ifconfig ens33:$key $vip netmask 255.255.255.0 up";
  16. my $ssh_stop_vip = "/usr/sbin/ifconfig ens33:$key down";
  17.  
  18. GetOptions(
  19.     'command=s'          => \$command,
  20.     'ssh_user=s'         => \$ssh_user,
  21.     'orig_master_host=s' => \$orig_master_host,
  22.     'orig_master_ip=s'   => \$orig_master_ip,
  23.     'orig_master_port=i' => \$orig_master_port,
  24.     'new_master_host=s'  => \$new_master_host,
  25.     'new_master_ip=s'    => \$new_master_ip,
  26.     'new_master_port=i'  => \$new_master_port,
  27. );
  28.  
  29. exit &main();
  30.  
  31. sub main {
  32.  
  33.     print "\n\nIN SCRIPT TEST====$ssh_stop_vip==$ssh_start_vip===\n\n";
  34.  
  35.     if ( $command eq "stop" || $command eq "stopssh" ) {
  36.  
  37.         my $exit_code = 1;
  38.         eval {
  39.             print "Disabling the VIP on old master: $orig_master_host \n";
  40.             &stop_vip();
  41.             $exit_code = 0;
  42.         };
  43.         if ($@) {
  44.             warn "Got Error: $@\n";
  45.             exit $exit_code;
  46.         }
  47.         exit $exit_code;
  48.     }
  49.     elsif ( $command eq "start" ) {
  50.  
  51.         my $exit_code = 10;
  52.         eval {
  53.             print "Enabling the VIP - $vip on the new master - $new_master_host \n";
  54.             &start_vip();
  55.             $exit_code = 0;
  56.         };
  57.         if ($@) {
  58.             warn $@;
  59.             exit $exit_code;
  60.         }
  61.         exit $exit_code;
  62.     }
  63.     elsif ( $command eq "status" ) {
  64.         print "Checking the Status of the script.. OK \n";
  65.         exit 0;
  66.     }
  67.     else {
  68.         &usage();
  69.         exit 1;
  70.     }
  71. }
  72.  
  73. sub start_vip() {
  74.     `ssh $ssh_user\@$new_master_host \" $ssh_start_vip \"`;
  75. }
  76. sub stop_vip() {
  77.      return 0  unless  ($ssh_user);
  78.     `ssh $ssh_user\@$orig_master_host \" $ssh_stop_vip \"`;
  79. }
  80.  
  81. sub usage {
  82.     print
  83.     "Usage: master_ip_failover --command=start|stop|stopssh|status --orig_master_host=host --orig_master_ip=ip
  84.             --orig_master_port=port --new_master_host=host --new_master_ip=ip --new_master_port=port\n";
  85. } 

检测VIP漂移

第一步:启动manager

  1. [root@localhost masterha]# ./start.sh
  2. [root@localhost masterha]# nohup: 把输出追加到"nohup.out"
  3.  
  4. 务必保证已经启动成功(ssh,主从检测都没错一般不会出问题)!
  5. start.sh里写了什么? 看上面

第二步:停止master mysql(192.168.137.144)

  1. [root@localhost masterha]# ssh root@192.168.137.144 "service mysql stop"
  2. Shutting down MySQL............ SUCCESS!

看manager.log日志

查看原来master1 192.168.137.144发现VIP已经被down掉

发现VIP漂移到了新的master2 192.168.137.145上

此时VIP切换成功!

同时查看主从切换, 按道理说现在master1 192.168.137.144上的mysql已经宕掉, slave应该连接新的master2 137.145上

  1. 漂移前查询
    mysql> show slave status \G
  2. *************************** 1. row ***************************
  3.                Slave_IO_State: Waiting for master to send event
  4.                   Master_Host: 192.168.137.144
  5.                   Master_User: sync
  6.                   Master_Port: 3306
  7.                 Connect_Retry: 60
  8.               Master_Log_File: mysql-bin.000016
  9.           Read_Master_Log_Pos: 154
  10.                Relay_Log_File: mysql-relay-bin.000002
  11.                 Relay_Log_Pos: 320
  12.         Relay_Master_Log_File: mysql-bin.000016
  13.              Slave_IO_Running: Yes
  14.             Slave_SQL_Running: Yes
  15.               Replicate_Do_DB:
  16.           Replicate_Ignore_DB:
  17.            Replicate_Do_Table:
  18.        Replicate_Ignore_Table:
  19.       Replicate_Wild_Do_Table:
  20.   Replicate_Wild_Ignore_Table:
  21.                    Last_Errno: 0
  22.                    Last_Error:
  23.                  Skip_Counter: 0
  24.           Exec_Master_Log_Pos: 154
  25.               Relay_Log_Space: 527
  26.               Until_Condition: None
  27.                Until_Log_File:
  28.                 Until_Log_Pos: 0
  29.            Master_SSL_Allowed: No
  30.            Master_SSL_CA_File:
  31.            Master_SSL_CA_Path:
  32.               Master_SSL_Cert:
  33.             Master_SSL_Cipher:
  34.                Master_SSL_Key:
  35.         Seconds_Behind_Master: 0
  36. Master_SSL_Verify_Server_Cert: No
  37.                 Last_IO_Errno: 0
  38.                 Last_IO_Error:
  39.                Last_SQL_Errno: 0
  40.                Last_SQL_Error:
  41.   Replicate_Ignore_Server_Ids:
  42.              Master_Server_Id: 144
  43.                   Master_UUID: 9abbdca0-424e-11e8-a71a-000c29deb434
  44.              Master_Info_File: /usr/local/mysql/data/master.info
  45.                     SQL_Delay: 0
  46.           SQL_Remaining_Delay: NULL
  47.       Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
  48.            Master_Retry_Count: 86400
  49.                   Master_Bind:
  50.       Last_IO_Error_Timestamp:
  51.      Last_SQL_Error_Timestamp:
  52.                Master_SSL_Crl:
  53.            Master_SSL_Crlpath:
  54.            Retrieved_Gtid_Set:
  55.             Executed_Gtid_Set:
  56.                 Auto_Position: 0
  57.          Replicate_Rewrite_DB:
  58.                  Channel_Name:
  59.            Master_TLS_Version:
  60. 1 row in set (0.00 sec)
  61. 漂移后查询
  62. mysql> show slave status \G
  63. *************************** 1. row ***************************
  64.                Slave_IO_State: Waiting for master to send event
  65.                   Master_Host: 192.168.137.145
  66.                   Master_User: sync
  67.                   Master_Port: 3306
  68.                 Connect_Retry: 60
  69.               Master_Log_File: mysql-bin.000005
  70.           Read_Master_Log_Pos: 154
  71.                Relay_Log_File: mysql-relay-bin.000002
  72.                 Relay_Log_Pos: 320
  73.         Relay_Master_Log_File: mysql-bin.000005
  74.              Slave_IO_Running: Yes
  75.             Slave_SQL_Running: Yes
  76.               Replicate_Do_DB:
  77.           Replicate_Ignore_DB:
  78.            Replicate_Do_Table:
  79.        Replicate_Ignore_Table:
  80.       Replicate_Wild_Do_Table:
  81.   Replicate_Wild_Ignore_Table:
  82.                    Last_Errno: 0
  83.                    Last_Error:
  84.                  Skip_Counter: 0
  85.           Exec_Master_Log_Pos: 154
  86.               Relay_Log_Space: 527
  87.               Until_Condition: None
  88.                Until_Log_File:
  89.                 Until_Log_Pos: 0
  90.            Master_SSL_Allowed: No
  91.            Master_SSL_CA_File:
  92.            Master_SSL_CA_Path:
  93.               Master_SSL_Cert:
  94.             Master_SSL_Cipher:
  95.                Master_SSL_Key:
  96.         Seconds_Behind_Master: 0
  97. Master_SSL_Verify_Server_Cert: No
  98.                 Last_IO_Errno: 0
  99.                 Last_IO_Error:
  100.                Last_SQL_Errno: 0
  101.                Last_SQL_Error:
  102.   Replicate_Ignore_Server_Ids:
  103.              Master_Server_Id: 145
  104.                   Master_UUID: 9abbdca0-424e-11e8-a71a-000c29deb433
  105.              Master_Info_File: /usr/local/mysql/data/master.info
  106.                     SQL_Delay: 0
  107.           SQL_Remaining_Delay: NULL
  108.       Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
  109.            Master_Retry_Count: 86400
  110.                   Master_Bind:
  111.       Last_IO_Error_Timestamp:
  112.      Last_SQL_Error_Timestamp:
  113.                Master_SSL_Crl:
  114.            Master_SSL_Crlpath:
  115.            Retrieved_Gtid_Set:
  116.             Executed_Gtid_Set:
  117.                 Auto_Position: 0
  118.          Replicate_Rewrite_DB:
  119.                  Channel_Name:
  120.            Master_TLS_Version:
  121. 1 row in set (0.00 sec)

VIP漂移正常,主从复制正常,MHA搭建成功!

报错信息:

SSH

  1. 测试ssh报错
  2.  [root@localhost app]# masterha_check_ssh --conf=/etc/masterha/app/app1.cnf
  3. Thu May 17 01:04:32 2018 - [warning] Global configuration file /etc/masterha_default.cnf not found. Skipping.
  4. Thu May 17 01:04:32 2018 - [info] Reading application default configurations from /etc/masterha/app/app1.cnf..
  5. Thu May 17 01:04:32 2018 - [info] Reading server configurations from /etc/masterha/app/app1.cnf..
  6. Thu May 17 01:04:32 2018 - [info] Starting SSH connection tests..
  7. Thu May 17 01:04:33 2018 - [error][/usr/share/perl5/vendor_perl/MHA/SSHCheck.pm, ln63]
  8. Thu May 17 01:04:32 2018 - [debug]  Connecting via SSH from root@192.168.137.144(192.168.137.144:22) to root@192.168.137.145(192.168.137.145:22)..
  9. Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).
  10. Thu May 17 01:04:32 2018 - [error][/usr/share/perl5/vendor_perl/MHA/SSHCheck.pm, ln111] SSH connection from root@192.168.137.144(192.168.137.144:22) to root@192.168.137.145(192.168.137.145:22) failed!
  11. Thu May 17 01:04:33 2018 - [error][/usr/share/perl5/vendor_perl/MHA/SSHCheck.pm, ln63]
  12. Thu May 17 01:04:32 2018 - [debug]  Connecting via SSH from root@192.168.137.145(192.168.137.145:22) to root@192.168.137.144(192.168.137.144:22)..
  13. Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).
  14. Thu May 17 01:04:33 2018 - [error][/usr/share/perl5/vendor_perl/MHA/SSHCheck.pm, ln111] SSH connection from root@192.168.137.145(192.168.137.145:22) to root@192.168.137.144(192.168.137.144:22) failed!
  15. Bizarre copy of ARRAY in scalar assignment at /usr/share/perl5/vendor_perl/Carp.pm line 182.
  16.  解决方案
  17.  三台机器互相配置ssh免密码认证(每台两次共6次)
  18.  再测
  19.  [root@localhost app]# masterha_check_ssh --conf=/etc/masterha/app/app1.cnf
  20. Thu May 17 01:12:33 2018 - [warning] Global configuration file /etc/masterha_default.cnf not found. Skipping.
  21. Thu May 17 01:12:33 2018 - [info] Reading application default configurations from /etc/masterha/app/app1.cnf..
  22. Thu May 17 01:12:33 2018 - [info] Reading server configurations from /etc/masterha/app/app1.cnf..
  23. Thu May 17 01:12:33 2018 - [info] Starting SSH connection tests..
  24. Thu May 17 01:12:34 2018 - [debug]
  25. Thu May 17 01:12:33 2018 - [debug]  Connecting via SSH from root@192.168.137.144(192.168.137.144:22) to root@192.168.137.145(192.168.137.145:22)..
  26. Thu May 17 01:12:34 2018 - [debug]   ok.
  27. Thu May 17 01:12:35 2018 - [debug]
  28. Thu May 17 01:12:34 2018 - [debug]  Connecting via SSH from root@192.168.137.145(192.168.137.145:22) to root@192.168.137.144(192.168.137.144:22)..
  29. Thu May 17 01:12:35 2018 - [debug]   ok.
  30. Thu May 17 01:12:35 2018 - [info] All SSH connection tests passed successfully.

主从1

  1. 主主同步报错
  2. mysql> show slave status \G
  3. *************************** 1. row ***************************
  4.                Slave_IO_State:
  5.                   Master_Host: 192.168.137.145
  6.                   Master_User: sync
  7.                   Master_Port: 3306
  8.                 Connect_Retry: 60
  9.               Master_Log_File: mysql-bin.000001
  10.           Read_Master_Log_Pos: 336
  11.                Relay_Log_File: localhost-relay-bin.000001
  12.                 Relay_Log_Pos: 4
  13.         Relay_Master_Log_File: mysql-bin.000001
  14.              Slave_IO_Running: No
  15.             Slave_SQL_Running: Yes
  16.               Replicate_Do_DB:
  17.           Replicate_Ignore_DB:
  18.            Replicate_Do_Table:
  19.        Replicate_Ignore_Table:
  20.       Replicate_Wild_Do_Table:
  21.   Replicate_Wild_Ignore_Table:
  22.                    Last_Errno: 0
  23.                    Last_Error:
  24.                  Skip_Counter: 0
  25.           Exec_Master_Log_Pos: 336
  26.               Relay_Log_Space: 154
  27.               Until_Condition: None
  28.                Until_Log_File:
  29.                 Until_Log_Pos: 0
  30.            Master_SSL_Allowed: No
  31.            Master_SSL_CA_File:
  32.            Master_SSL_CA_Path:
  33.               Master_SSL_Cert:
  34.             Master_SSL_Cipher:
  35. ▽              Master_SSL_Key:
  36.         Seconds_Behind_Master: NULL
  37. Master_SSL_Verify_Server_Cert: No
  38.                 Last_IO_Errno: 1593
  39.                 Last_IO_Error: Fatal error: The slave I/O thread stops because master and slave have equal MySQL server UUIDs; these UUIDs must be different for replication to work.
  40.                Last_SQL_Errno: 0
  41.                Last_SQL_Error:
  42.   Replicate_Ignore_Server_Ids:
  43.              Master_Server_Id: 145
  44.                   Master_UUID:
  45.              Master_Info_File: /usr/local/mysql/data/master.info
  46.                     SQL_Delay: 0
  47.           SQL_Remaining_Delay: NULL
  48.       Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
  49.            Master_Retry_Count: 86400
  50.                   Master_Bind:
  51.       Last_IO_Error_Timestamp: 180517 01:37:32
  52.      Last_SQL_Error_Timestamp:
  53.                Master_SSL_Crl:
  54.            Master_SSL_Crlpath:
  55.            Retrieved_Gtid_Set:
  56.             Executed_Gtid_Set:
  57.                 Auto_Position: 0
  58.          Replicate_Rewrite_DB:
  59.                  Channel_Name:
  60.            Master_TLS_Version:
  61. 1 row in set (0.00 sec)
  62. 解决:
  63. [root@localhost .ssh]# cd /usr/local/mysql/data/
  64. [root@localhost data]# vim auto.cnf
  65. [auto]
  66. server-uuid=9abbdca0-424e-11e8-a71a-000c29deb434
  67. 保存退出。(保证两个mysql的uuid不一致即可)

主从2

  1. 报错3:主从问题
  2. [root@localhost ~]# masterha_check_repl --conf=/etc/masterha/app1.cnf
  3. Thu May 17 21:32:15 2018 - [warning] Global configuration file /etc/masterha_default.cnf not found. Skipping.
  4. Thu May 17 21:32:15 2018 - [info] Reading application default configurations from /etc/masterha/app1.cnf..
  5. Thu May 17 21:32:15 2018 - [info] Reading server configurations from /etc/masterha/app1.cnf..
  6. Thu May 17 21:32:15 2018 - [info] MHA::MasterMonitor version 0.55.
  7. Thu May 17 21:32:15 2018 - [warning] SQL Thread is stopped(no error) on 192.168.137.144(192.168.137.144:3306)
  8. Thu May 17 21:32:15 2018 - [error][/root/perl5/lib/perl5/MHA/ServerManager.pm, ln732] Multi-master configuration is detected, but two or more masters are either writable (read-only is not set) or dead! Check configurations for details. Master configurations are as below:
  9. Master 192.168.137.145(192.168.137.145:3306), replicating from 192.168.137.144(192.168.137.144:3306)
  10. Master 192.168.137.144(192.168.137.144:3306), replicating from 192.168.137.145(192.168.137.145:3306)
  11.  
  12. Thu May 17 21:32:15 2018 - [error][/root/perl5/lib/perl5/MHA/MasterMonitor.pm, ln386] Error happend on checking configurations.  at /root/perl5/lib/perl5/MHA/MasterMonitor.pm line 300.
  13. Thu May 17 21:32:15 2018 - [error][/root/perl5/lib/perl5/MHA/MasterMonitor.pm, ln482] Error happened on monitoring servers.
  14. Thu May 17 21:32:15 2018 - [info] Got exit code 1 (Not master dead).
  15.  
  16. MySQL Replication Health is NOT OK!
  17. [root@localhost ~]#
  18. 解决:
  19. 在每台mysql的my.cnf下配置属性:(主要是备机)
  20. relay-log=/usr/local/mysql/binlog/mysql-relay-bin
  21. mkdir -p /usr/local/mysql/binlog
  22. chown -R mysql:mysql /usr/local/mysql/binlog
  23. 重启mysql。
  24. 重新配置主从：
  25. CHANGE MASTER TO MASTER_HOST='192.168.137.144',MASTER_USER='sync',MASTER_PASSWORD='sync',MASTER_LOG_FILE='mysql-bin.000002',MASTER_LOG_POS=154;
  26.  
  27. 结果：
  28.  
  29. [root@localhost ~]# masterha_check_repl --conf=/etc/masterha/app1.cnf
  30. Thu May 17 21:58:11 2018 - [warning] Global configuration file /etc/masterha_default.cnf not found. Skipping.
  31. Thu May 17 21:58:11 2018 - [info] Reading application default configurations from /etc/masterha/app1.cnf..
  32. Thu May 17 21:58:11 2018 - [info] Reading server configurations from /etc/masterha/app1.cnf..
  33. Thu May 17 21:58:11 2018 - [info] MHA::MasterMonitor version 0.55.
  34. Thu May 17 21:58:11 2018 - [info] Dead Servers:
  35. Thu May 17 21:58:11 2018 - [info] Alive Servers:
  36. Thu May 17 21:58:11 2018 - [info]   192.168.137.144(192.168.137.144:3306)
  37. Thu May 17 21:58:11 2018 - [info]   192.168.137.145(192.168.137.145:3306)
  38. Thu May 17 21:58:11 2018 - [info] Alive Slaves:
  39. Thu May 17 21:58:11 2018 - [info]   192.168.137.145(192.168.137.145:3306)  Version=5.7.21-log (oldest major version between slaves) log-bin:enabled
  40. Thu May 17 21:58:11 2018 - [info]     Replicating from 192.168.137.144(192.168.137.144:3306)
  41. Thu May 17 21:58:11 2018 - [info]     Primary candidate for the new Master (candidate_master is set)
  42. Thu May 17 21:58:11 2018 - [info] Current Alive Master: 192.168.137.144(192.168.137.144:3306)
  43. Thu May 17 21:58:11 2018 - [info] Checking slave configurations..
  44. Thu May 17 21:58:11 2018 - [info]  read_only=1 is not set on slave 192.168.137.145(192.168.137.145:3306).
  45. Thu May 17 21:58:11 2018 - [warning]  relay_log_purge=0 is not set on slave 192.168.137.145(192.168.137.145:3306).
  46. Thu May 17 21:58:11 2018 - [info] Checking replication filtering settings..
  47. Thu May 17 21:58:11 2018 - [info]  binlog_do_db= , binlog_ignore_db=
  48. Thu May 17 21:58:11 2018 - [info]  Replication filtering check ok.
  49. Thu May 17 21:58:11 2018 - [info] Starting SSH connection tests..
  50. Thu May 17 21:58:12 2018 - [info] All SSH connection tests passed successfully.
  51. Thu May 17 21:58:12 2018 - [info] Checking MHA Node version..
  52. Thu May 17 21:58:13 2018 - [info]  Version check ok.
  53. Thu May 17 21:58:13 2018 - [info] Checking SSH publickey authentication settings on the current master..
  54. Thu May 17 21:58:13 2018 - [info] HealthCheck: SSH to 192.168.137.144 is reachable.
  55. Thu May 17 21:58:14 2018 - [info] Master MHA Node version is 0.54.
  56. Thu May 17 21:58:14 2018 - [info] Checking recovery script configurations on the current master..
  57. Thu May 17 21:58:14 2018 - [info]   Executing command: save_binary_logs --command=test --start_pos=4 --binlog_dir=/usr/local/mysql/data/ --output_file=/masterha/save_binary_logs_test --manager_version=0.55 --start_file=mysql-bin.000002
  58. Thu May 17 21:58:14 2018 - [info]   Connecting to root@192.168.137.144(192.168.137.144)..
  59.   Creating /masterha if not exists.. Creating directory /masterha.. done.
  60.    ok.
  61.   Checking output directory is accessible or not..
  62.    ok.
  63.   Binlog found at /usr/local/mysql/data/, up to mysql-bin.000002
  64. Thu May 17 21:58:14 2018 - [info] Master setting check done.
  65. Thu May 17 21:58:14 2018 - [info] Checking SSH publickey authentication and checking recovery script configurations on all alive slave servers..
  66. Thu May 17 21:58:14 2018 - [info]   Executing command : apply_diff_relay_logs --command=test --slave_user='root' --slave_host=192.168.137.145 --slave_ip=192.168.137.145 --slave_port=3306 --workdir=/masterha --target_version=5.7.21-log --manager_version=0.55 --relay_log_info=/usr/local/mysql/data/relay-log.info  --relay_dir=/usr/local/mysql/data/  --slave_pass=xxx
  67. Thu May 17 21:58:14 2018 - [info]   Connecting to root@192.168.137.145(192.168.137.145:22)..
  68. Creating directory /masterha.. done.
  69.   Checking slave recovery environment settings..
  70.     Opening /usr/local/mysql/data/relay-log.info ... ok.
  71.     Relay log found at /usr/local/mysql/binlog, up to mysql-relay-bin.000002
  72.     Temporary relay log file is /usr/local/mysql/binlog/mysql-relay-bin.000002
  73.     Testing mysql connection and privileges..mysql: [Warning] Using a password on the command line interface can be insecure.
  74.  done.
  75.     Testing mysqlbinlog output.. done.
  76.     Cleaning up test file(s).. done.
  77. Thu May 17 21:58:15 2018 - [info] Slaves settings check done.
  78. Thu May 17 21:58:15 2018 - [info]
  79. 192.168.137.144 (current master)
  80.  +--192.168.137.145
  81.  
  82. Thu May 17 21:58:15 2018 - [info] Checking replication health on 192.168.137.145..
  83. Thu May 17 21:58:15 2018 - [info]  ok.
  84. Thu May 17 21:58:15 2018 - [warning] master_ip_failover_script is not defined.
  85. Thu May 17 21:58:15 2018 - [warning] shutdown_script is not defined.
  86. Thu May 17 21:58:15 2018 - [info] Got exit code 0 (Not master dead).
  87.  
  88. MySQL Replication Health is OK.

VIP

VIP恢复master1后, 重新启动manager后发现报错

解决方法:按提示删除指定文件即可。

ssh

这是我搭建的第二遍了, 这是第二遍时出的错

由于manager有点特殊,在测试ssh的时候发现了一个大问题, 折磨了我很久

master:148

master2:149

slave:150

为什么会这样, 这是ssh 148 --> 149不行, 但是手动ssh登录的时候是可以免密码跨越的.

后来想到这是manager和slave一体的

  1. ssh-copy-id root@192.168.137.148

192.168.137.148是本机, 这是给本地的一个免密

然后再测试, 完美通过

mysqlbinlog

如下

  1. [root@localhost masterha]# masterha_check_repl --conf=/etc/masterha/app1.cnf
  2. Fri Jul 20 23:39:47 2018 - [info] Checking recovery script configurations on 192.168.137.148(192.168.137.148:3306)..
  3. Fri Jul 20 23:39:47 2018 - [info]   Executing command: save_binary_logs --command=test --start_pos=4 --binlog_dir=/opt/mysql/data/ --output_file=/etc/masterha/save_binary_logs_test --manager_version=0.58 --start_file=mysql-bin.000001
  4. Fri Jul 20 23:39:47 2018 - [info]   Connecting to root@192.168.137.148(192.168.137.148:22)..
  5.   Creating /etc/masterha if not exists..    ok.
  6.   Checking output directory is accessible or not..
  7.    ok.
  8.   Binlog found at /opt/mysql/data/, up to mysql-bin.000001
  9. Fri Jul 20 23:39:47 2018 - [info] Binlog setting check done.
  10. Fri Jul 20 23:39:47 2018 - [info] Checking SSH publickey authentication and checking recovery script configurations on all alive slave servers..
  11. Fri Jul 20 23:39:47 2018 - [info]   Executing command : apply_diff_relay_logs --command=test --slave_user='root' --slave_host=192.168.137.149 --slave_ip=192.168.137.149 --slave_port=3306 --workdir=/etc/masterha --target_version=5.7.22-log --manager_version=0.58 --relay_log_info=/opt/mysql/data/relay-log.info  --relay_dir=/opt/mysql/data/  --slave_pass=xxx
  12. Fri Jul 20 23:39:47 2018 - [info]   Connecting to root@192.168.137.149(192.168.137.149:22)..
  13. Can't exec "mysqlbinlog": 没有那个文件或目录 at /usr/share/perl5/vendor_perl/MHA/BinlogManager.pm line 106.
  14. mysqlbinlog version command failed with rc 1:0, please verify PATH, LD_LIBRARY_PATH, and client options
  15.  at /usr/bin/apply_diff_relay_logs line 532.
  16. Fri Jul 20 23:39:48 2018 - [error][/usr/share/perl5/vendor_perl/MHA/MasterMonitor.pm, ln208] Slaves settings check failed!
  17. Fri Jul 20 23:39:48 2018 - [error][/usr/share/perl5/vendor_perl/MHA/MasterMonitor.pm, ln416] Slave configuration failed.
  18. Fri Jul 20 23:39:48 2018 - [error][/usr/share/perl5/vendor_perl/MHA/MasterMonitor.pm, ln427] Error happened on checking configurations.  at /usr/bin/masterha_check_repl line 48.
  19. Fri Jul 20 23:39:48 2018 - [error][/usr/share/perl5/vendor_perl/MHA/MasterMonitor.pm, ln525] Error happened on monitoring servers.
  20. Fri Jul 20 23:39:48 2018 - [info] Got exit code 1 (Not master dead).
  21.  
  22. MySQL Replication Health is NOT OK!

这个报错就是没有搞这个环境, 然后它找不到mysqlbinlog这个命令, 这个就比较容易解决

  1. ln -s /opt/mysql/bin/mysqlbinlog /usr/bin/mysqlbinlog

第一个是你mysql中bin的mysqlbinlog, 把它软链接扔进全局环境/usr/bin里面

Slave IO

如下

  1. Fri Jul 20 23:48:07 2018 - [info] Checking replication health on 192.168.137.149..
  2. Fri Jul 20 23:48:07 2018 - [info]  ok.
  3. Fri Jul 20 23:48:07 2018 - [info] Checking replication health on 192.168.137.150..
  4. Fri Jul 20 23:48:07 2018 - [info]  ok.
  5. Fri Jul 20 23:48:07 2018 - [info] Checking replication health on 192.168.137.148..
  6. Fri Jul 20 23:48:07 2018 - [error][/usr/share/perl5/vendor_perl/MHA/Server.pm, ln490] Slave IO thread is not running on 192.168.137.148(192.168.137.148:3306)
  7. Fri Jul 20 23:48:07 2018 - [error][/usr/share/perl5/vendor_perl/MHA/ServerManager.pm, ln1526]  failed!
  8. Fri Jul 20 23:48:07 2018 - [error][/usr/share/perl5/vendor_perl/MHA/MasterMonitor.pm, ln427] Error happened on checking configurations.  at /usr/share/perl5/vendor_perl/MHA/MasterMonitor.pm line 420.
  9. Fri Jul 20 23:48:07 2018 - [error][/usr/share/perl5/vendor_perl/MHA/MasterMonitor.pm, ln525] Error happened on monitoring servers.
  10. Fri Jul 20 23:48:07 2018 - [info] Got exit code 1 (Not master dead).
  11.  
  12. MySQL Replication Health is NOT OK!

这个报错完全就是打快了, 不小心把主从同步的slave命令(下面那一条)扔进了master中, 罪过

CHANGE MASTER TO MASTER_HOST='192.168.137.148',MASTER_USER='sync',MASTER_PASSWORD='lizhenghua',MASTER_LOG_FILE='mysql-bin.000001',MASTER_LOG_POS=1121;

这个解决的思路就是从master中干掉它即可

  1. mysql>stop slave;
  2. mysql>reset slave all;

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