介绍几个MHA check 命令，输出如下
[root@MHA bin]# pwd
/usr/local/bin
[root@MHA bin]# ls -l
total 104
-r-xr-xr-x. 1 root root 16367 Sep 7 09:43 apply_diff_relay_logs
-r-xr-xr-x. 1 root root 4807 Sep 7 09:43 filter_mysqlbinlog
-r-xr-xr-x. 1 root root 1995 Sep 7 09:22 masterha_check_repl
-r-xr-xr-x. 1 root root 1779 Sep 7 09:22 masterha_check_ssh
-r-xr-xr-x. 1 root root 1865 Sep 7 09:22 masterha_check_status
-r-xr-xr-x. 1 root root 3201 Sep 7 09:22 masterha_conf_host
-r-xr-xr-x. 1 root root 2517 Sep 7 09:22 masterha_manager
-r-xr-xr-x. 1 root root 2165 Sep 7 09:22 masterha_master_monitor
-r-xr-xr-x. 1 root root 2373 Sep 7 09:22 masterha_master_switch
-r-xr-xr-x. 1 root root 5171 Sep 7 09:22 masterha_secondary_check
-r-xr-xr-x. 1 root root 1739 Sep 7 09:22 masterha_stop
-rwxr-xr-x. 1 root root 4598 Sep 7 14:20 master_ip_failover
-rwxr-xr-x. 1 root root 10101 Sep 7 14:32 master_ip_online_change
-r-xr-xr-x. 1 root root 8261 Sep 7 09:43 purge_relay_logs
-r-xr-xr-x. 1 root root 7525 Sep 7 09:43 save_binary_logs
[root@MHA bin]# masterha_check_ssh --conf=/etc/app1.cnf
Sun Sep 9 08:27:02 2018 - [warning] Global configuration file /etc/masterha_default.cnf not found. Skipping.
Sun Sep 9 08:27:02 2018 - [info] Reading application default configuration from /etc/app1.cnf..
Sun Sep 9 08:27:02 2018 - [info] Reading server configuration from /etc/app1.cnf..
Sun Sep 9 08:27:02 2018 - [info] Starting SSH connection tests..
Sun Sep 9 08:27:02 2018 - [debug]
Sun Sep 9 08:27:02 2018 - [debug] Connecting via SSH from root@master(192.168.56.101:22) to root@slave1(192.168.56.102:22)..
Sun Sep 9 08:27:02 2018 - [debug] ok.
Sun Sep 9 08:27:02 2018 - [debug] Connecting via SSH from root@master(192.168.56.101:22) to root@slave2(192.168.56.103:22)..
Sun Sep 9 08:27:02 2018 - [debug] ok.
Sun Sep 9 08:27:03 2018 - [debug]
Sun Sep 9 08:27:02 2018 - [debug] Connecting via SSH from root@slave1(192.168.56.102:22) to root@master(192.168.56.101:22)..
Sun Sep 9 08:27:03 2018 - [debug] ok.
Sun Sep 9 08:27:03 2018 - [debug] Connecting via SSH from root@slave1(192.168.56.102:22) to root@slave2(192.168.56.103:22)..
Sun Sep 9 08:27:03 2018 - [debug] ok.
Sun Sep 9 08:27:03 2018 - [debug]
Sun Sep 9 08:27:03 2018 - [debug] Connecting via SSH from root@slave2(192.168.56.103:22) to root@master(192.168.56.101:22)..
Sun Sep 9 08:27:03 2018 - [debug] ok.
Sun Sep 9 08:27:03 2018 - [debug] Connecting via SSH from root@slave2(192.168.56.103:22) to root@slave1(192.168.56.102:22)..
Sun Sep 9 08:27:03 2018 - [debug] ok.
Sun Sep 9 08:27:03 2018 - [info] All SSH connection tests passed successfully.
[root@MHA bin]# masterha_check_repl --conf=/etc/app1.cnf
Sun Sep 9 08:27:15 2018 - [warning] Global configuration file /etc/masterha_default.cnf not found. Skipping.
Sun Sep 9 08:27:15 2018 - [info] Reading application default configuration from /etc/app1.cnf..
Sun Sep 9 08:27:15 2018 - [info] Reading server configuration from /etc/app1.cnf..
Sun Sep 9 08:27:15 2018 - [info] MHA::MasterMonitor version 0.56.
Sun Sep 9 08:27:16 2018 - [info] GTID failover mode = 0
Sun Sep 9 08:27:16 2018 - [info] Dead Servers:
Sun Sep 9 08:27:16 2018 - [info] Alive Servers:
Sun Sep 9 08:27:16 2018 - [info] master(192.168.56.101:3306)
Sun Sep 9 08:27:16 2018 - [info] slave1(192.168.56.102:3306)
Sun Sep 9 08:27:16 2018 - [info] slave2(192.168.56.103:3306)
Sun Sep 9 08:27:16 2018 - [info] Alive Slaves:
Sun Sep 9 08:27:16 2018 - [info] slave1(192.168.56.102:3306) Version=10.1.35-MariaDB (oldest major version between slaves) log-bin:enabled
Sun Sep 9 08:27:16 2018 - [info] Replicating from 192.168.56.101(192.168.56.101:3306)
Sun Sep 9 08:27:16 2018 - [info] slave2(192.168.56.103:3306) Version=10.1.35-MariaDB (oldest major version between slaves) log-bin:enabled
Sun Sep 9 08:27:16 2018 - [info] Replicating from 192.168.56.101(192.168.56.101:3306)
Sun Sep 9 08:27:16 2018 - [info] Current Alive Master: master(192.168.56.101:3306)
Sun Sep 9 08:27:16 2018 - [info] Checking slave configurations..
Sun Sep 9 08:27:16 2018 - [info] Checking replication filtering settings..
Sun Sep 9 08:27:16 2018 - [info] binlog_do_db= , binlog_ignore_db=
Sun Sep 9 08:27:16 2018 - [info] Replication filtering check ok.
Sun Sep 9 08:27:16 2018 - [info] GTID (with auto-pos) is not supported
Sun Sep 9 08:27:16 2018 - [info] Starting SSH connection tests..
Sun Sep 9 08:27:17 2018 - [info] All SSH connection tests passed successfully.
Sun Sep 9 08:27:17 2018 - [info] Checking MHA Node version..
Sun Sep 9 08:27:18 2018 - [info] Version check ok.
Sun Sep 9 08:27:18 2018 - [info] Checking SSH publickey authentication settings on the current master..
Sun Sep 9 08:27:18 2018 - [info] HealthCheck: SSH to master is reachable.
Sun Sep 9 08:27:18 2018 - [info] Master MHA Node version is 0.56.
Sun Sep 9 08:27:18 2018 - [info] Checking recovery script configurations on master(192.168.56.101:3306)..
Sun Sep 9 08:27:18 2018 - [info] Executing command: save_binary_logs --command=test --start_pos=4 --binlog_dir=/data/binlogs --output_file=/var/log/masterha//save_binary_logs_test --manager_version=0.56 --start_file=mysql-bin.000005
Sun Sep 9 08:27:18 2018 - [info] Connecting to root@192.168.56.101(master:22)..
Creating /var/log/masterha if not exists.. ok.
Checking output directory is accessible or not..
ok.
Binlog found at /data/binlogs, up to mysql-bin.000005
Sun Sep 9 08:27:19 2018 - [info] Binlog setting check done.
Sun Sep 9 08:27:19 2018 - [info] Checking SSH publickey authentication and checking recovery script configurations on all alive slave servers..
Sun Sep 9 08:27:19 2018 - [info] Executing command : apply_diff_relay_logs --command=test --slave_user='admin' --slave_host=slave1 --slave_ip=192.168.56.102 --slave_port=3306 --workdir=/var/log/masterha/ --target_version=10.1.35-MariaDB --manager_version=0.56 --relay_log_info=/data/mysql/relay-log.info --relay_dir=/data/mysql/ --slave_pass=xxx
Sun Sep 9 08:27:19 2018 - [info] Connecting to root@192.168.56.102(slave1:22)..
Checking slave recovery environment settings..
Opening /data/mysql/relay-log.info ... ok.
Relay log found at /data/relaylogs, up to relay-bin.000015
Temporary relay log file is /data/relaylogs/relay-bin.000015
Testing mysql connection and privileges.. done.
Testing mysqlbinlog output.. done.
Cleaning up test file(s).. done.
Sun Sep 9 08:27:19 2018 - [info] Executing command : apply_diff_relay_logs --command=test --slave_user='admin' --slave_host=slave2 --slave_ip=192.168.56.103 --slave_port=3306 --workdir=/var/log/masterha/ --target_version=10.1.35-MariaDB --manager_version=0.56 --relay_log_info=/data/mysql/relay-log.info --relay_dir=/data/mysql/ --slave_pass=xxx
Sun Sep 9 08:27:19 2018 - [info] Connecting to root@192.168.56.103(slave2:22)..
Checking slave recovery environment settings..
Opening /data/mysql/relay-log.info ... ok.
Relay log found at /data/relaylogs, up to relay-bin.000015
Temporary relay log file is /data/relaylogs/relay-bin.000015
Testing mysql connection and privileges.. done.
Testing mysqlbinlog output.. done.
Cleaning up test file(s).. done.
Sun Sep 9 08:27:19 2018 - [info] Slaves settings check done.
Sun Sep 9 08:27:19 2018 - [info]
master(192.168.56.101:3306) (current master)
+--slave1(192.168.56.102:3306)
+--slave2(192.168.56.103:3306)
Sun Sep 9 08:27:19 2018 - [info] Checking replication health on slave1..
Sun Sep 9 08:27:19 2018 - [info] ok.
Sun Sep 9 08:27:19 2018 - [info] Checking replication health on slave2..
Sun Sep 9 08:27:19 2018 - [info] ok.
Sun Sep 9 08:27:19 2018 - [info] Checking master_ip_failover_script status:
Sun Sep 9 08:27:19 2018 - [info] /usr/local/bin/master_ip_failover --command=status --ssh_user=root --orig_master_host=master --orig_master_ip=192.168.56.101 --orig_master_port=3306
inet 192.168.56.105/32 scope global eth2
INFO: VIP 192.168.1.100 found on Master
Sun Sep 9 08:27:19 2018 - [info] OK.
Sun Sep 9 08:27:19 2018 - [warning] shutdown_script is not defined.
Sun Sep 9 08:27:19 2018 - [info] Got exit code 0 (Not master dead).
MySQL Replication Health is OK.
[root@MHA bin]#
[root@MHA bin]# masterha_check_s
masterha_check_ssh masterha_check_status
[root@MHA bin]# masterha_check_status --conf=/etc/app1.cnf
app1 is stopped(2:NOT_RUNNING).
[root@MHA bin]# masterha_check_status
Either --conf or --status_dir must be set.
at /usr/local/share/perl5/MHA/ManagerAdminWrapper.pm line 121
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