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• 1. MHA测试报错
  • （1）报错情况
  • （2）报错原因
  • （3）如何解决

1. MHA测试报错

（1）报错情况

masterha_check_repl -conf=/etc/masterha/app1.cnf报错，显示如下

[root@manager scripts]# masterha_check_repl -conf=/etc/masterha/app1.cnf
Tue Sep  7 02:59:56 2021 - [warning] Global configuration file /etc/masterha_default.cnf not found. Skipping.
Tue Sep  7 02:59:56 2021 - [info] Reading application default configuration from /etc/masterha/app1.cnf..
Tue Sep  7 02:59:56 2021 - [info] Reading server configuration from /etc/masterha/app1.cnf..
Tue Sep  7 02:59:56 2021 - [info] MHA::MasterMonitor version 0.57.
Tue Sep  7 02:59:57 2021 - [info] GTID failover mode = 0
Tue Sep  7 02:59:57 2021 - [info] Dead Servers:
Tue Sep  7 02:59:57 2021 - [info] Alive Servers:
Tue Sep  7 02:59:57 2021 - [info]   192.168.122.10(192.168.122.10:3306)
Tue Sep  7 02:59:57 2021 - [info]   192.168.122.11(192.168.122.11:3306)
Tue Sep  7 02:59:57 2021 - [info]   192.168.122.12(192.168.122.12:3306)
Tue Sep  7 02:59:57 2021 - [info] Alive Slaves:
Tue Sep  7 02:59:57 2021 - [info]   192.168.122.11(192.168.122.11:3306)  Version=5.7.17-log (oldest major version between slaves) log-bin:enabled
Tue Sep  7 02:59:57 2021 - [info]     Replicating from 192.168.122.10(192.168.122.10:3306)
Tue Sep  7 02:59:57 2021 - [info]     Primary candidate for the new Master (candidate_master is set)
Tue Sep  7 02:59:57 2021 - [info]   192.168.122.12(192.168.122.12:3306)  Version=5.7.17-log (oldest major version between slaves) log-bin:enabled
Tue Sep  7 02:59:57 2021 - [info]     Replicating from 192.168.122.10(192.168.122.10:3306)
Tue Sep  7 02:59:57 2021 - [info] Current Alive Master: 192.168.122.10(192.168.122.10:3306)
Tue Sep  7 02:59:57 2021 - [info] Checking slave configurations..
Tue Sep  7 02:59:57 2021 - [warning]  relay_log_purge=0 is not set on slave 192.168.122.11(192.168.122.11:3306).
Tue Sep  7 02:59:57 2021 - [warning]  relay_log_purge=0 is not set on slave 192.168.122.12(192.168.122.12:3306).
Tue Sep  7 02:59:57 2021 - [info] Checking replication filtering settings..
Tue Sep  7 02:59:57 2021 - [info]  binlog_do_db= , binlog_ignore_db= 
Tue Sep  7 02:59:57 2021 - [info]  Replication filtering check ok.
Tue Sep  7 02:59:57 2021 - [info] GTID (with auto-pos) is not supported
Tue Sep  7 02:59:57 2021 - [info] Starting SSH connection tests..
Tue Sep  7 03:00:00 2021 - [info] All SSH connection tests passed successfully.
Tue Sep  7 03:00:00 2021 - [info] Checking MHA Node version..
Tue Sep  7 03:00:00 2021 - [info]  Version check ok.
Tue Sep  7 03:00:00 2021 - [info] Checking SSH publickey authentication settings on the current master..
Tue Sep  7 03:00:00 2021 - [info] HealthCheck: SSH to 192.168.122.10 is reachable.
Tue Sep  7 03:00:00 2021 - [info] Master MHA Node version is 0.57.
Tue Sep  7 03:00:00 2021 - [info] Checking recovery script configurations on 192.168.122.10(192.168.122.10:3306)..
Tue Sep  7 03:00:00 2021 - [info]   Executing command: save_binary_logs --command=test --start_pos=4 --binlog_dir=/usr/local/mysql/data --output_file=/tmp/save_binary_logs_test --manager_version=0.57 --start_file=master-bin.000001 
Tue Sep  7 03:00:00 2021 - [info]   Connecting to root@192.168.122.10(192.168.122.10:22).. 
  Creating /tmp if not exists..    ok.
  Checking output directory is accessible or not..
   ok.
  Binlog found at /usr/local/mysql/data, up to master-bin.000001
Tue Sep  7 03:00:00 2021 - [info] Binlog setting check done.
Tue Sep  7 03:00:00 2021 - [info] Checking SSH publickey authentication and checking recovery script configurations on all alive slave servers..
Tue Sep  7 03:00:00 2021 - [info]   Executing command : apply_diff_relay_logs --command=test --slave_user='mha' --slave_host=192.168.122.11 --slave_ip=192.168.122.11 --slave_port=3306 --workdir=/tmp --target_version=5.7.17-log --manager_version=0.57 --relay_log_info=/usr/local/mysql/data/relay-log.info  --relay_dir=/usr/local/mysql/data/  --slave_pass=xxx
Tue Sep  7 03:00:00 2021 - [info]   Connecting to root@192.168.122.11(192.168.122.11:22).. 
mysqlbinlog: [ERROR] unknown variable 'default-character-set=utf8'
mysqlbinlog version command failed with rc 7:0, please verify PATH, LD_LIBRARY_PATH, and client options
 at /usr/local/bin/apply_diff_relay_logs line 493.
Tue Sep  7 03:00:01 2021 - [error][/usr/local/share/perl5/MHA/MasterMonitor.pm, ln208] Slaves settings check failed!
Tue Sep  7 03:00:01 2021 - [error][/usr/local/share/perl5/MHA/MasterMonitor.pm, ln416] Slave configuration failed.
Tue Sep  7 03:00:01 2021 - [error][/usr/local/share/perl5/MHA/MasterMonitor.pm, ln427] Error happened on checking configurations.  at /usr/local/bin/masterha_check_repl line 48.
Tue Sep  7 03:00:01 2021 - [error][/usr/local/share/perl5/MHA/MasterMonitor.pm, ln525] Error happened on monitoring servers.
Tue Sep  7 03:00:01 2021 - [info] Got exit code 1 (Not master dead).

MySQL Replication Health is NOT OK!

（2）报错原因

锁定报错原因为：[ERROR] unknown variable 'default-character-set=utf8'@192.168.122.11

（3）如何解决

前往192.168.122.11主机（以及同配置的其他slave主机）的/etc/my.cnf删除错误配置并重启mysql服务即可

[root@manager scripts]# masterha_check_repl -conf=/etc/masterha/app1.cnf
Tue Sep  7 03:10:16 2021 - [warning] Global configuration file /etc/masterha_default.cnf not found. Skipping.
Tue Sep  7 03:10:16 2021 - [info] Reading application default configuration from /etc/masterha/app1.cnf..
Tue Sep  7 03:10:16 2021 - [info] Reading server configuration from /etc/masterha/app1.cnf..
Tue Sep  7 03:10:16 2021 - [info] MHA::MasterMonitor version 0.57.
Tue Sep  7 03:10:17 2021 - [info] GTID failover mode = 0
Tue Sep  7 03:10:17 2021 - [info] Dead Servers:
Tue Sep  7 03:10:17 2021 - [info] Alive Servers:
Tue Sep  7 03:10:17 2021 - [info]   192.168.122.10(192.168.122.10:3306)
Tue Sep  7 03:10:17 2021 - [info]   192.168.122.11(192.168.122.11:3306)
Tue Sep  7 03:10:17 2021 - [info]   192.168.122.12(192.168.122.12:3306)
Tue Sep  7 03:10:17 2021 - [info] Alive Slaves:
Tue Sep  7 03:10:17 2021 - [info]   192.168.122.11(192.168.122.11:3306)  Version=5.7.17-log (oldest major version between slaves) log-bin:enabled
Tue Sep  7 03:10:17 2021 - [info]     Replicating from 192.168.122.10(192.168.122.10:3306)
Tue Sep  7 03:10:17 2021 - [info]     Primary candidate for the new Master (candidate_master is set)
Tue Sep  7 03:10:17 2021 - [info]   192.168.122.12(192.168.122.12:3306)  Version=5.7.17-log (oldest major version between slaves) log-bin:enabled
Tue Sep  7 03:10:17 2021 - [info]     Replicating from 192.168.122.10(192.168.122.10:3306)
Tue Sep  7 03:10:17 2021 - [info] Current Alive Master: 192.168.122.10(192.168.122.10:3306)
Tue Sep  7 03:10:17 2021 - [info] Checking slave configurations..
Tue Sep  7 03:10:17 2021 - [info]  read_only=1 is not set on slave 192.168.122.11(192.168.122.11:3306).
Tue Sep  7 03:10:17 2021 - [warning]  relay_log_purge=0 is not set on slave 192.168.122.11(192.168.122.11:3306).
Tue Sep  7 03:10:17 2021 - [info]  read_only=1 is not set on slave 192.168.122.12(192.168.122.12:3306).
Tue Sep  7 03:10:17 2021 - [warning]  relay_log_purge=0 is not set on slave 192.168.122.12(192.168.122.12:3306).
Tue Sep  7 03:10:17 2021 - [info] Checking replication filtering settings..
Tue Sep  7 03:10:17 2021 - [info]  binlog_do_db= , binlog_ignore_db= 
Tue Sep  7 03:10:17 2021 - [info]  Replication filtering check ok.
Tue Sep  7 03:10:17 2021 - [info] GTID (with auto-pos) is not supported
Tue Sep  7 03:10:17 2021 - [info] Starting SSH connection tests..
Tue Sep  7 03:10:20 2021 - [info] All SSH connection tests passed successfully.
Tue Sep  7 03:10:20 2021 - [info] Checking MHA Node version..
Tue Sep  7 03:10:20 2021 - [info]  Version check ok.
Tue Sep  7 03:10:20 2021 - [info] Checking SSH publickey authentication settings on the current master..
Tue Sep  7 03:10:20 2021 - [info] HealthCheck: SSH to 192.168.122.10 is reachable.
Tue Sep  7 03:10:20 2021 - [info] Master MHA Node version is 0.57.
Tue Sep  7 03:10:20 2021 - [info] Checking recovery script configurations on 192.168.122.10(192.168.122.10:3306)..
Tue Sep  7 03:10:20 2021 - [info]   Executing command: save_binary_logs --command=test --start_pos=4 --binlog_dir=/usr/local/mysql/data --output_file=/tmp/save_binary_logs_test --manager_version=0.57 --start_file=master-bin.000001 
Tue Sep  7 03:10:20 2021 - [info]   Connecting to root@192.168.122.10(192.168.122.10:22).. 
  Creating /tmp if not exists..    ok.
  Checking output directory is accessible or not..
   ok.
  Binlog found at /usr/local/mysql/data, up to master-bin.000001
Tue Sep  7 03:10:20 2021 - [info] Binlog setting check done.
Tue Sep  7 03:10:20 2021 - [info] Checking SSH publickey authentication and checking recovery script configurations on all alive slave servers..
Tue Sep  7 03:10:20 2021 - [info]   Executing command : apply_diff_relay_logs --command=test --slave_user='mha' --slave_host=192.168.122.11 --slave_ip=192.168.122.11 --slave_port=3306 --workdir=/tmp --target_version=5.7.17-log --manager_version=0.57 --relay_log_info=/usr/local/mysql/data/relay-log.info  --relay_dir=/usr/local/mysql/data/  --slave_pass=xxx
Tue Sep  7 03:10:20 2021 - [info]   Connecting to root@192.168.122.11(192.168.122.11:22).. 
  Checking slave recovery environment settings..
    Opening /usr/local/mysql/data/relay-log.info ... ok.
    Relay log found at /usr/local/mysql/data, up to relay-log-bin.000006
    Temporary relay log file is /usr/local/mysql/data/relay-log-bin.000006
    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.
Tue Sep  7 03:10:21 2021 - [info]   Executing command : apply_diff_relay_logs --command=test --slave_user='mha' --slave_host=192.168.122.12 --slave_ip=192.168.122.12 --slave_port=3306 --workdir=/tmp --target_version=5.7.17-log --manager_version=0.57 --relay_log_info=/usr/local/mysql/data/relay-log.info  --relay_dir=/usr/local/mysql/data/  --slave_pass=xxx
Tue Sep  7 03:10:21 2021 - [info]   Connecting to root@192.168.122.12(192.168.122.12:22).. 
  Checking slave recovery environment settings..
    Opening /usr/local/mysql/data/relay-log.info ... ok.
    Relay log found at /usr/local/mysql/data, up to relay-log-bin.000006
    Temporary relay log file is /usr/local/mysql/data/relay-log-bin.000006
    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.
Tue Sep  7 03:10:21 2021 - [info] Slaves settings check done.
Tue Sep  7 03:10:21 2021 - [info] 
192.168.122.10(192.168.122.10:3306) (current master)
 +--192.168.122.11(192.168.122.11:3306)
 +--192.168.122.12(192.168.122.12:3306)

Tue Sep  7 03:10:21 2021 - [info] Checking replication health on 192.168.122.11..
Tue Sep  7 03:10:21 2021 - [info]  ok.
Tue Sep  7 03:10:21 2021 - [info] Checking replication health on 192.168.122.12..
Tue Sep  7 03:10:21 2021 - [info]  ok.
Tue Sep  7 03:10:21 2021 - [info] Checking master_ip_failover_script status:
Tue Sep  7 03:10:21 2021 - [info]   /usr/local/bin/master_ip_failover --command=status --ssh_user=root --orig_master_host=192.168.122.10 --orig_master_ip=192.168.122.10 --orig_master_port=3306 


IN SCRIPT TEST====/sbin/ifconfig ens33:1 down==/sbin/ifconfig ens33:1 192.168.122.200===

Checking the Status of the script.. OK 
Tue Sep  7 03:10:21 2021 - [info]  OK.
Tue Sep  7 03:10:21 2021 - [warning] shutdown_script is not defined.
Tue Sep  7 03:10:21 2021 - [info] Got exit code 0 (Not master dead).

MySQL Replication Health is OK.

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