[warning] Connection failed 1 time(s)..
Thu Sep 7 16:43:54 2017 - [info] Executing secondary network check script: /usr/local/bin/masterha_secondary_check -s 172.17.0.2 -s 172.17.0.3 -s 172.17.0.4 -s 172.17.0.5 --user=root --master_host=172.17.0.3 --master_ip=172.17.0.3 --master_port=3306 --master_user=root --master_password=123456 --ping_type=SELECT
Thu Sep 7 16:43:54 2017 - [info] Executing SSH check script: save_binary_logs --command=test --start_pos=4 --binlog_dir=/data/binlog/,/var/lib/mysql,/var/log/mysql --output_file=/tmp/save_binary_logs_test --manager_version=0.57 --binlog_prefix=mysql-bin
Thu Sep 7 16:43:54 2017 - [info] HealthCheck: SSH to 172.17.0.3 is reachable.
Monitoring server 172.17.0.2 is reachable, Master is not reachable from 172.17.0.2. OK.
Monitoring server 172.17.0.3 is reachable, Master is not reachable from 172.17.0.3. OK.
Thu Sep 7 16:43:57 2017 - [warning] Got error on MySQL connect: 2003 (Can‘t connect to MySQL server on ‘172.17.0.3‘ (111))
Thu Sep 7 16:43:57 2017 - [warning] Connection failed 2 time(s)..
ssh: connect to host 172.17.0.4 port 22: No route to host
Monitoring server 172.17.0.4 is NOT reachable!
Thu Sep 7 16:43:58 2017 - [warning] n.At least one of monitoring servers is not reachable from this script. This is likely a network problem. Failover should not happe
masterha_secondary_check -s 172.17.0.2 -s 172.17.0.3 -s 172.17.0.4 -s 172.17.0.5
上面服务器有一个网络不通了，就不能failover（有点坑）
原文：http://lovexx.blog.51cto.com/131664/1963477