环境
manager 192.168.137.141master1 192.168.137.144master2 192.168.137.145slave 192.168.137.141vip 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
192.168.137.141mha4mysql-manager-0.55-0.el6.noarch.rpmmha4mysql-node-0.54-0.el6.noarch.rpm192.168.137.144192.168.137.145mha4mysql-node-0.54-0.el6.noarch.rpm
依赖
链接：https://pan.baidu.com/s/1mTcoBiUsvATQMkM3bXJKrA 密码：rpvq
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
192.168.137.141 --> 192.168.137.144192.168.137.141 --> 192.168.137.145192.168.137.144 --> 192.168.137.141192.168.137.144 --> 192.168.137.145192.168.137.145 --> 192.168.137.141192.168.137.145 --> 192.168.137.1446次
主模块2:配置集群主从复制
master: 192.168.137.144slave: 192.168.137.145master: 192.168.137.144slave: 192.168.137.141
主模块3:manager配置
mkdir -p /etc/masterhacd /etc/masterhavim app1.cnf
app1.cnf
[server default]user=rootpassword=lizhenghuamanager_workdir=/etc/masterhamanager_log=/etc/masterha/logs/manager.logremote_workdir=/etc/masterhassh_user=rootrepl_user=syncrepl_password=syncping_interval=3#master_ip_online_change_script=/etc/masterha/script/master_ip_online_changemaster_ip_failover_script=/etc/masterha/script/master_ip_failover#report_script=/etc/masterha/script/sendMail_report[server1]hostname=192.168.137.144port=3306master_binlog_dir=/usr/local/mysql/data/candidate_master=1[server2]hostname=192.168.137.145port=3306master_binlog_dir=/usr/local/mysql/data/candidate_master=1[server3]hostname=192.168.137.141port=3306master_binlog_dir=/usr/local/mysql/data/candidate_master=1
副模块1:检测SSH
masterha_check_ssh --conf=/etc/masterha/app1.cnf
模块2:检测主从
masterha_check_repl --conf=/etc/masterha/app1.cnf
manager启动方式
vim start.sh#!/usr/bin/bashnohup perl /root/perl5/bin/masterha_manager --conf=/etc/masterha/conf/app1.cnf &
功能测试
192.168.137.141
mysql> show slave status \G\*************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.137.144 Master_User: sync Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000003 Read_Master_Log_Pos: 154 Relay_Log_File: mysql-relay-bin.000004 Relay_Log_Pos: 367 Relay_Master_Log_File: mysql-bin.000003 Slave_IO_Running: Yes 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: 0 Last_Error: Skip_Counter: 0 Exec_Master_Log_Pos: 154 Relay_Log_Space: 740 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: 0Master_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: 144 Master_UUID: 9abbdca0-424e-11e8-a71a-000c29deb434 Master_Info_File: /usr/local/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)
kill掉192.168.137.144机器上的mysql, 然后141开始切换master
mysql> show slave status \G\*************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.137.145 Master_User: sync Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000003 Read_Master_Log_Pos: 154 Relay_Log_File: mysql-relay-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: 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: 0Master_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: 145 Master_UUID: 9abbdca0-424e-11e8-a71a-000c29deb433 Master_Info_File: /usr/local/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)
manager上日志
切换成功!
主模块3:VIP
master_ip_failover
#!/usr/bin/env perluse strict;use warnings FATAL => 'all';use Getopt::Long;my ( $command, $ssh_user, $orig_master_host, $orig_master_ip, $orig_master_port, $new_master_host, $new_master_ip, $new_master_port);my $vip = '192.168.137.199/24';my $key = '0';my $ssh_start_vip = "/usr/sbin/ifconfig ens33:$key $vip netmask 255.255.255.0 up";my $ssh_stop_vip = "/usr/sbin/ifconfig ens33:$key down";GetOptions( 'command=s' => \$command, 'ssh_user=s' => \$ssh_user, 'orig_master_host=s' => \$orig_master_host, 'orig_master_ip=s' => \$orig_master_ip, 'orig_master_port=i' => \$orig_master_port, 'new_master_host=s' => \$new_master_host, 'new_master_ip=s' => \$new_master_ip, 'new_master_port=i' => \$new_master_port,);exit &main();sub main { print "\n\nIN SCRIPT TEST====$ssh_stop_vip==$ssh_start_vip===\n\n"; if ( $command eq "stop" || $command eq "stopssh" ) { my $exit_code = 1; eval { print "Disabling the VIP on old master: $orig_master_host \n"; &stop_vip(); $exit_code = 0; }; if ($@) { warn "Got Error: $@\n"; exit $exit_code; } exit $exit_code; } elsif ( $command eq "start" ) { my $exit_code = 10; eval { print "Enabling the VIP - $vip on the new master - $new_master_host \n"; &start_vip(); $exit_code = 0; }; if ($@) { warn $@; exit $exit_code; } exit $exit_code; } elsif ( $command eq "status" ) { print "Checking the Status of the script.. OK \n"; exit 0; } else { &usage(); exit 1; }}sub start_vip() { `ssh $ssh_user\@$new_master_host \" $ssh_start_vip \"`;}sub stop_vip() { return 0 unless ($ssh_user); `ssh $ssh_user\@$orig_master_host \" $ssh_stop_vip \"`;}sub usage { print "Usage: master_ip_failover --command=start|stop|stopssh|status --orig_master_host=host --orig_master_ip=ip --orig_master_port=port --new_master_host=host --new_master_ip=ip --new_master_port=port\n";} 检测VIP漂移
第一步:启动manager
[root@localhost masterha]# ./start.sh [root@localhost masterha]# nohup: 把输出追加到"nohup.out"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)!start.sh里写了什么? 看上面
第二步:停止master mysql(192.168.137.144)
[root@localhost masterha]# ssh root@192.168.137.144 "service mysql stop"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
漂移前查询 mysql> show slave status \G*************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.137.144 Master_User: sync Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000016 Read_Master_Log_Pos: 154 Relay_Log_File: mysql-relay-bin.000002 Relay_Log_Pos: 320 Relay_Master_Log_File: mysql-bin.000016 Slave_IO_Running: Yes 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: 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: 0Master_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: 144 Master_UUID: 9abbdca0-424e-11e8-a71a-000c29deb434 Master_Info_File: /usr/local/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) 漂移后查询mysql> show slave status \G*************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.137.145 Master_User: sync Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000005 Read_Master_Log_Pos: 154 Relay_Log_File: mysql-relay-bin.000002 Relay_Log_Pos: 320 Relay_Master_Log_File: mysql-bin.000005 Slave_IO_Running: Yes 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: 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: 0Master_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: 145 Master_UUID: 9abbdca0-424e-11e8-a71a-000c29deb433 Master_Info_File: /usr/local/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)
VIP漂移正常,主从复制正常,MHA搭建成功!
报错信息:
SSH
测试ssh报错 [root@localhost app]# masterha_check_ssh --conf=/etc/masterha/app/app1.cnf Thu May 17 01:04:32 2018 - [warning] Global configuration file /etc/masterha_default.cnf not found. Skipping.Thu May 17 01:04:32 2018 - [info] Reading application default configurations from /etc/masterha/app/app1.cnf..Thu May 17 01:04:32 2018 - [info] Reading server configurations from /etc/masterha/app/app1.cnf..Thu May 17 01:04:32 2018 - [info] Starting SSH connection tests..Thu May 17 01:04:33 2018 - [error][/usr/share/perl5/vendor_perl/MHA/SSHCheck.pm, ln63] 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)..Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).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!Thu May 17 01:04:33 2018 - [error][/usr/share/perl5/vendor_perl/MHA/SSHCheck.pm, ln63] 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)..Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).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!Bizarre copy of ARRAY in scalar assignment at /usr/share/perl5/vendor_perl/Carp.pm line 182. 解决方案 三台机器互相配置ssh免密码认证(每台两次共6次) 再测 [root@localhost app]# masterha_check_ssh --conf=/etc/masterha/app/app1.cnf Thu May 17 01:12:33 2018 - [warning] Global configuration file /etc/masterha_default.cnf not found. Skipping.Thu May 17 01:12:33 2018 - [info] Reading application default configurations from /etc/masterha/app/app1.cnf..Thu May 17 01:12:33 2018 - [info] Reading server configurations from /etc/masterha/app/app1.cnf..Thu May 17 01:12:33 2018 - [info] Starting SSH connection tests..Thu May 17 01:12:34 2018 - [debug] 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)..Thu May 17 01:12:34 2018 - [debug] ok.Thu May 17 01:12:35 2018 - [debug] 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)..Thu May 17 01:12:35 2018 - [debug] ok.Thu May 17 01:12:35 2018 - [info] All SSH connection tests passed successfully.
主从1
主主同步报错mysql> show slave status \G*************************** 1. row *************************** Slave_IO_State: Master_Host: 192.168.137.145 Master_User: sync Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000001 Read_Master_Log_Pos: 336 Relay_Log_File: localhost-relay-bin.000001 Relay_Log_Pos: 4 Relay_Master_Log_File: mysql-bin.000001 Slave_IO_Running: No 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: 0 Last_Error: Skip_Counter: 0 Exec_Master_Log_Pos: 336 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: NULLMaster_SSL_Verify_Server_Cert: No Last_IO_Errno: 1593 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. Last_SQL_Errno: 0 Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 145 Master_UUID: Master_Info_File: /usr/local/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: 180517 01:37:32 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)解决:[root@localhost .ssh]# cd /usr/local/mysql/data/[root@localhost data]# vim auto.cnf [auto]server-uuid=9abbdca0-424e-11e8-a71a-000c29deb434保存退出。(保证两个mysql的uuid不一致即可)
主从2
报错3:主从问题[root@localhost ~]# masterha_check_repl --conf=/etc/masterha/app1.cnf Thu May 17 21:32:15 2018 - [warning] Global configuration file /etc/masterha_default.cnf not found. Skipping.Thu May 17 21:32:15 2018 - [info] Reading application default configurations from /etc/masterha/app1.cnf..Thu May 17 21:32:15 2018 - [info] Reading server configurations from /etc/masterha/app1.cnf..Thu May 17 21:32:15 2018 - [info] MHA::MasterMonitor version 0.55.Thu May 17 21:32:15 2018 - [warning] SQL Thread is stopped(no error) on 192.168.137.144(192.168.137.144:3306)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: Master 192.168.137.145(192.168.137.145:3306), replicating from 192.168.137.144(192.168.137.144:3306)Master 192.168.137.144(192.168.137.144:3306), replicating from 192.168.137.145(192.168.137.145:3306)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.Thu May 17 21:32:15 2018 - [error][/root/perl5/lib/perl5/MHA/MasterMonitor.pm, ln482] Error happened on monitoring servers.Thu May 17 21:32:15 2018 - [info] Got exit code 1 (Not master dead).MySQL Replication Health is NOT OK![root@localhost ~]# 解决:在每台mysql的my.cnf下配置属性:(主要是备机)relay-log=/usr/local/mysql/binlog/mysql-relay-binmkdir -p /usr/local/mysql/binlogchown -R mysql:mysql /usr/local/mysql/binlog重启mysql。重新配置主从：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;结果：[root@localhost ~]# masterha_check_repl --conf=/etc/masterha/app1.cnf Thu May 17 21:58:11 2018 - [warning] Global configuration file /etc/masterha_default.cnf not found. Skipping.Thu May 17 21:58:11 2018 - [info] Reading application default configurations from /etc/masterha/app1.cnf..Thu May 17 21:58:11 2018 - [info] Reading server configurations from /etc/masterha/app1.cnf..Thu May 17 21:58:11 2018 - [info] MHA::MasterMonitor version 0.55.Thu May 17 21:58:11 2018 - [info] Dead Servers:Thu May 17 21:58:11 2018 - [info] Alive Servers:Thu May 17 21:58:11 2018 - [info] 192.168.137.144(192.168.137.144:3306)Thu May 17 21:58:11 2018 - [info] 192.168.137.145(192.168.137.145:3306)Thu May 17 21:58:11 2018 - [info] Alive Slaves: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:enabledThu May 17 21:58:11 2018 - [info] Replicating from 192.168.137.144(192.168.137.144:3306)Thu May 17 21:58:11 2018 - [info] Primary candidate for the new Master (candidate_master is set)Thu May 17 21:58:11 2018 - [info] Current Alive Master: 192.168.137.144(192.168.137.144:3306)Thu May 17 21:58:11 2018 - [info] Checking slave configurations..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).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).Thu May 17 21:58:11 2018 - [info] Checking replication filtering settings..Thu May 17 21:58:11 2018 - [info] binlog_do_db= , binlog_ignore_db= Thu May 17 21:58:11 2018 - [info] Replication filtering check ok.Thu May 17 21:58:11 2018 - [info] Starting SSH connection tests..Thu May 17 21:58:12 2018 - [info] All SSH connection tests passed successfully.Thu May 17 21:58:12 2018 - [info] Checking MHA Node version..Thu May 17 21:58:13 2018 - [info] Version check ok.Thu May 17 21:58:13 2018 - [info] Checking SSH publickey authentication settings on the current master..Thu May 17 21:58:13 2018 - [info] HealthCheck: SSH to 192.168.137.144 is reachable.Thu May 17 21:58:14 2018 - [info] Master MHA Node version is 0.54.Thu May 17 21:58:14 2018 - [info] Checking recovery script configurations on the current master..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 Thu May 17 21:58:14 2018 - [info] Connecting to root@192.168.137.144(192.168.137.144).. Creating /masterha if not exists.. Creating directory /masterha.. done. ok. Checking output directory is accessible or not.. ok. Binlog found at /usr/local/mysql/data/, up to mysql-bin.000002Thu May 17 21:58:14 2018 - [info] Master setting check done.Thu May 17 21:58:14 2018 - [info] Checking SSH publickey authentication and checking recovery script configurations on all alive slave servers..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=xxxThu May 17 21:58:14 2018 - [info] Connecting to root@192.168.137.145(192.168.137.145:22).. Creating directory /masterha.. done. Checking slave recovery environment settings.. Opening /usr/local/mysql/data/relay-log.info ... ok. Relay log found at /usr/local/mysql/binlog, up to mysql-relay-bin.000002 Temporary relay log file is /usr/local/mysql/binlog/mysql-relay-bin.000002 Testing mysql connection and privileges..mysql: [Warning] Using a password on the command line interface can be insecure. done. Testing mysqlbinlog output.. done. Cleaning up test file(s).. done.Thu May 17 21:58:15 2018 - [info] Slaves settings check done.Thu May 17 21:58:15 2018 - [info] 192.168.137.144 (current master) +--192.168.137.145Thu May 17 21:58:15 2018 - [info] Checking replication health on 192.168.137.145..Thu May 17 21:58:15 2018 - [info] ok.Thu May 17 21:58:15 2018 - [warning] master_ip_failover_script is not defined.Thu May 17 21:58:15 2018 - [warning] shutdown_script is not defined.Thu May 17 21:58:15 2018 - [info] Got exit code 0 (Not master dead).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
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
[root@localhost masterha]# masterha_check_repl --conf=/etc/masterha/app1.cnf Fri Jul 20 23:39:47 2018 - [info] Checking recovery script configurations on 192.168.137.148(192.168.137.148:3306)..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 Fri Jul 20 23:39:47 2018 - [info] Connecting to root@192.168.137.148(192.168.137.148:22).. Creating /etc/masterha if not exists.. ok. Checking output directory is accessible or not.. ok. Binlog found at /opt/mysql/data/, up to mysql-bin.000001Fri Jul 20 23:39:47 2018 - [info] Binlog setting check done.Fri Jul 20 23:39:47 2018 - [info] Checking SSH publickey authentication and checking recovery script configurations on all alive slave servers..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=xxxFri Jul 20 23:39:47 2018 - [info] Connecting to root@192.168.137.149(192.168.137.149:22).. Can't exec "mysqlbinlog": 没有那个文件或目录 at /usr/share/perl5/vendor_perl/MHA/BinlogManager.pm line 106.mysqlbinlog version command failed with rc 1:0, please verify PATH, LD_LIBRARY_PATH, and client options at /usr/bin/apply_diff_relay_logs line 532.Fri Jul 20 23:39:48 2018 - [error][/usr/share/perl5/vendor_perl/MHA/MasterMonitor.pm, ln208] Slaves settings check failed!Fri Jul 20 23:39:48 2018 - [error][/usr/share/perl5/vendor_perl/MHA/MasterMonitor.pm, ln416] Slave configuration failed.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.Fri Jul 20 23:39:48 2018 - [error][/usr/share/perl5/vendor_perl/MHA/MasterMonitor.pm, ln525] Error happened on monitoring servers.Fri Jul 20 23:39:48 2018 - [info] Got exit code 1 (Not master dead).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
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
Fri Jul 20 23:48:07 2018 - [info] Checking replication health on 192.168.137.149..Fri Jul 20 23:48:07 2018 - [info] ok.Fri Jul 20 23:48:07 2018 - [info] Checking replication health on 192.168.137.150..Fri Jul 20 23:48:07 2018 - [info] ok.Fri Jul 20 23:48:07 2018 - [info] Checking replication health on 192.168.137.148..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)Fri Jul 20 23:48:07 2018 - [error][/usr/share/perl5/vendor_perl/MHA/ServerManager.pm, ln1526] failed!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.Fri Jul 20 23:48:07 2018 - [error][/usr/share/perl5/vendor_perl/MHA/MasterMonitor.pm, ln525] Error happened on monitoring servers.Fri Jul 20 23:48:07 2018 - [info] Got exit code 1 (Not master dead).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
mysql>stop slave;mysql>reset slave all;