zabbix connection to database 'zabbix' failed
在启动zabbix时启动失败，查看日志：# tailf /tmp/zabbix_server.log24661:20180326:203250.916 connection to database 'zabbix' failed: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
24661:20180326:203250.916 database is down: reconnecting in 10 seconds
24661:20180326:203300.916 connection to database 'zabbix' failed: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
24661:20180326:203300.916 database is down: reconnecting in 10 seconds
24661:20180326:203310.917 connection to database 'zabbix' failed: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
24661:20180326:203310.917 database is down: reconnecting in 10 seconds
24661:20180326:203320.918 connection to database 'zabbix' failed: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
24661:20180326:203320.918 database is down: reconnecting in 10 seconds
24661:20180326:203330.920 connection to database 'zabbix' failed: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
24661:20180326:203330.920 database is down: reconnecting in 10 seconds 发现日志链接不上
# ll /var/lib/mysql/mysql.sock
ls: cannot access /var/lib/mysql/mysql.sock: No such file or directory
# ll /var/lib/mysql
ls: cannot access /var/lib/mysql: No such file or directory
可以知道是/var/lib/mysql/mysql.sock不存在
在系统中查找mysql.sock文件：# find / -name mysql.sock
/tmp/mysql.sock 可以知道是在/tmp/下，这个时候有两种方式解决这个问题：
1）做mysql.sock的链接# mkdir /var/lib/mysql
# ln -s /tmp/mysql.sock /var/lib/mysql/mysql.sock
# /etc/rc.d/init.d/mysqld restart
Shutting down MySQL... SUCCESS!
Starting MySQL SUCCESS! 2)修改zabbix_server.conf中的mysql.sock的配置vim /etc/zabbix/zabbix_server.conf
DBSocket=/tmp/mysql.sock 再重启zabbix就好
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