zabbix连接数据库失败（connection to database 'zabbix' failed: [1045] Access denied for user 'root'。。。。。。。）解决方法：

mysql> UPDATE user SET Password=PASSWORD('youpassword') where USER='root' and host='root' or host='localhost';

mysql> FLUSH PRIVILEGES;

重启zabbix

php.ini修改，重启nginx后，不生效原因：

php5.3中要重启php-fpm，单纯的重启nginx不能使php.ini设置生效

ps aux | grep php-fpm

kill -QUIT xxxx

启动：/usr/local/php/sbin/php-fpm

nginx 启动

/usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf