我用munin作为监控员，我很高兴。 它位于本地主机上， CNAME是server.domain.com 。 尝试从远程机器访问server.domain.com出现了与graphics和这样酷的东西munin主页。 过了一段时间，某些插件的graphics停止工作，但我没有注意到这一点。 几天之后，我意识到，我的这个munin有什么问题，而且我在想，怎么可能呢，即使我没有改变，munin也停止了正常的工作。 我意识到，唯一可能影响到munin性能的configuration是对apacheconfiguration的改变（基本上我组成了一群VirtualHosts来pipe理我的子域）。
我认为，这个munin认为，它位于不同于localhost机器上（例如，因为mysql说Access denied for user 'debian-sys-maint'@'localhost' ，我不知道用户是谁，它在哪里知道这样的用户（它现在在munin的configuration文件中find），它之前工作，我根本没有改变muninconfiguration）。
所以，回顾一下，munin工作正常。 在更改apache2 VirtualHostconfiguration（并且可能移动munin，但仍然在单个机器上）之后，mysql，apache，NFS的graphics停止工作。 其他graphics（如磁盘，networking，进程）仍然正常工作。
我能够提供有关系统或从Apache，munin，MySQL或任何其他信息，但我不知道哪些日志提供，因为我不知道是什么问题的主要原因。
我正在提供munin日志。
munin-update.log:
2015/09/11 16:20:02 [INFO]: Starting munin-update 2015/09/11 16:20:02 [INFO] starting work in 9389 for server.domain.com/127.0.0.1:4949. 2015/09/11 16:20:04 [WARNING] Service nfs_client on server.domain.com/127.0.0.1:4949 returned no data for label link /* same message for label: lookup,setattr,readlink,create,remove,write,read,symlink,rename,rmdir,commit,mknod,fsstat,getattr,fsinfo,pathconf,readdirplus,mkdir,access,readdir */ 2015/09/11 16:20:04 [WARNING] Service nfsd on server.domain.com/127.0.0.1:4949 returned no data for label access /* same message for label: mkdir,readdir,fsinfo,pathconf,readdirplus,fsstat,getattr,commit,mknod,symlink,rename,rmdir,remove,write,read,create,link,lookup,setattr,readlink */ 2015/09/11 16:20:08 [WARNING] Service mysql_innodb on server.domain.com/127.0.0.1:4949 returned no data for label free /* same message for label: open_downgrade,readlink,server_caps,setclientid_confirm,setclientid,getacl,lock,write,rename,open_noattr,statfs,close,lookup_root,getattr,delegreturn,fsinfo,access,lookup,link,setattr,locku,create,renew,lockt,read,remove,symlink,setacl,commit,open_confirm,pathconf,openreaddir */ 2015/09/11 16:20:10 [WARNING] Service mysql_queries on server.domain.com/127.0.0.1:4949 returned no data for label select /* same message for label: update,insert,delete,replace,cache_hits */ 2015/09/11 16:20:10 [INFO]: Munin-update finished for node domain.com;server.domain.com (8.45 sec) 2015/09/11 16:20:10 [INFO] Reaping Munin::Master::UpdateWorker<domain.com;server.domain.com>. Exit value/signal: 0/0 2015/09/11 16:20:10 [INFO]: Munin-update finished (8.69 sec)
munin-node.log:
2015/09/11-16:20:02 CONNECT TCP Peer: "[::ffff:127.0.0.1]:53822" Local: "[::ffff:127.0.0.1]:4949" 2015/09/11-16:20:02 [9390] Error output from mysql_: 2015/09/11-16:20:02 [9390] Unknown graph at /etc/munin/plugins/mysql_ line 831. 2015/09/11-16:20:02 [9390] Service 'mysql_' exited with status 255/0. 2015/09/11-16:20:02 [9390] Error output from mysql_: 2015/09/11-16:20:02 [9390] Unknown graph at /etc/munin/plugins/mysql_ line 874. 2015/09/11-16:20:02 [9390] Service 'mysql_' exited with status 255/0. 2015/09/11-16:20:05 [9390] Error output from mysql_isam_space_: 2015/09/11-16:20:05 [9390] /usr/bin/mysqlshow: Access denied for user 'debian-sys-maint'@'localhost' (using password: YES) 2015/09/11-16:20:05 [9390] Service 'mysql_isam_space_' exited with status 1/0. 2015/09/11-16:20:05 [9390] Error output from mysql_isam_space_: 2015/09/11-16:20:05 [9390] /usr/bin/mysqlshow: Access denied for user 'debian-sys-maint'@'localhost' (using password: YES) 2015/09/11-16:20:05 [9390] Service 'mysql_isam_space_' exited with status 1/0. 2015/09/11-16:20:08 [9390] Error output from mysql_innodb: 2015/09/11-16:20:08 [9390] ERROR 1045 (28000): Access denied for user 'debian-sys-maint'@'localhost' (using password: YES) 2015/09/11-16:20:08 [9390] ERROR 1045 (28000): Access denied for user 'debian-sys-maint'@'localhost' (using password: YES) 2015/09/11-16:20:10 [9390] Error output from mysql_queries: 2015/09/11-16:20:10 [9390] mysqladmin: connect to server at 'localhost' failed 2015/09/11-16:20:10 [9390] error: 'Access denied for user 'debian-sys-maint'@'localhost' (using password: YES)'