MHA时测试主从复制报错MySQL Replication Health is NOT OK!
具体报错信息
[root@manager bin]# masterha_check_repl -conf=/etc/masterha/fSat Jul 31 05:23:03 - [warning] Global configuration file /etc/f not found. Skipping.Sat Jul 31 05:23:03 - [info] Reading application default configuration from /etc/masterha/f..Sat Jul 31 05:23:03 - [info] Reading server configuration from /etc/masterha/f..Sat Jul 31 05:23:03 - [info] MHA::MasterMonitor version 0.57.Sat Jul 31 05:23:04 - [info] GTID failover mode = 0Sat Jul 31 05:23:04 - [info] Dead Servers:Sat Jul 31 05:23:04 - [info] 192.168.206.188(192.168.206.188:3306)Sat Jul 31 05:23:04 - [info] Alive Servers:Sat Jul 31 05:23:04 - [info] 192.168.206.88(192.168.206.88:3306)Sat Jul 31 05:23:04 - [info] 192.168.206.177(192.168.206.177:3306)Sat Jul 31 05:23:04 - [info] Alive Slaves:Sat Jul 31 05:23:04 - [info] 192.168.206.177(192.168.206.177:3306) Version=5.7.20-log (oldest major version between slaves) log-bin:enabledSat Jul 31 05:23:04 - [info]Replicating from 192.168.206.88(192.168.206.88:3306)Sat Jul 31 05:23:04 - [info] Current Alive Master: 192.168.206.88(192.168.206.88:3306)Sat Jul 31 05:23:04 - [info] Checking slave configurations..Sat Jul 31 05:23:04 - [info] read_only=1 is not set on slave 192.168.206.177(192.168.206.177:3306).Sat Jul 31 05:23:04 - [warning] relay_log_purge=0 is not set on slave 192.168.206.177(192.168.206.177:3306).Sat Jul 31 05:23:04 - [info] Checking replication filtering settings..Sat Jul 31 05:23:04 - [info] binlog_do_db= , binlog_ignore_db=Sat Jul 31 05:23:04 - [info] Replication filtering check ok.Sat Jul 31 05:23:04 - [info] GTID (with auto-pos) is not supportedSat Jul 31 05:23:04 - [info] Starting SSH connection tests..Sat Jul 31 05:23:15 - [info] All SSH connection tests passed successfully.Sat Jul 31 05:23:15 - [info] Checking MHA Node version..Sat Jul 31 05:23:15 - [info] Version check ok.Sat Jul 31 05:23:15 - [error][/usr/local/share/perl5/MHA/ServerManager.pm, ln492] Server 192.168.206.188(192.168.206.188:3306) is dead, but must be alive! Check server settings.Sat Jul 31 05:23:15 - [error][/usr/local/share/perl5/MHA/MasterMonitor.pm, ln427] Error happened on checking configurations. at /usr/local/share/perl5/MHA/MasterMonitor.pm line 402.Sat Jul 31 05:23:15 - [error][/usr/local/share/perl5/MHA/MasterMonitor.pm, ln525] Error happened on monitoring servers.Sat Jul 31 05:23:15 - [info] Got exit code 1 (Not master dead).MySQL Replication Health is NOT OK!
分析解决
1.主从复制做完后我是有做过数据库同步测试的，主从复制配置应该是没有问题的
2.然后到配置文件看是不是有问题
3.发现上面的配置文件路径应该是不对的，mysql安装时我选的路径是/usr/local/mysql/data，2个不匹配，重新修改再试试
依然还是not ok！
4.实在找不到还是什么原因，百度百度，说是从服务器上开启只读，查看已经配置过，应该不是这个问题
5.报错显示是188的服务器问题，查看服务正常，仔细检查后发现188的防火墙没关，心态又炸了
我以为这次肯定得好了吧，可是当我重新检查时还是not ok，有新的报错提示。好慌啊
报错显示应该是配置问题
mysqlbinlog version command failed with rc 1:0, please verify PATH, LD_LIBRARY_PATH, and client options
6.这个应该是变量的问题，应该是需要做软链接.，服务器重新做下软链接，服务器都做一下
ln -s /usr/local/mysql/bin/mysql /usr/sbin
ln -s /usr/local/mysql/bin/mysqlbinlog /usr/sbin
再检测还是not ok！哭了！报错又变了，说明还有其他的问题！
7.继续看报错
这个应该是字符集的问题，服务器配置文件里字符集注释一下
8.苍天啊大地啊，真的是历经磨难终于成功了，我要去睡觉了！
心态炸裂 搭建mha时 在测试主从复制时候报错MySQL Replication Health is NOT OK！！！有点慌！慢慢盘吧！
