nfs服务启动报错解决

一、报错现象
启动NFS报错：

[root@XXXX /]# chkconfig --level 2345 nfs on
[root@XXXX /]# 
[root@XXXX /]# chkconfig --list|grep nfs
nfs             0:off   1:off   2:on    3:on    4:on    5:on    6:off
nfslock         0:off   1:off   2:off   3:off   4:off   5:off   6:off
[root@XXXX /]# service nfs start
Starting NFS services:                                     [  OK  ]
Starting NFS quotas: Cannot register service: RPC: Unable to receive; errno = Connection refused
rpc.rquotad: unable to register (RQUOTAPROG, RQUOTAVERS, udp).
                                                           [FAILED]
Starting NFS mountd:                                       [FAILED]
Starting NFS daemon: rpc.nfsd: writing fd to kernel failed: errno 111 (Connection refused)
rpc.nfsd: unable to set any sockets for nfsd
                                                           [FAILED]

二、报错原因
RH系列操作系统在6.0版本之后没有portmap服务控制rpc的启动，NFS和nfslock的启动需要向rpc进行注册，rpc不启动的话就会报错。

三、解决方法
启动rpcbind和rpcidmap即可；rpcbind是6.0版本后默认的RPC服务，所以要先于nfs启动。如果不启动rpcidmap则会造成用户权限的映射错误，用户的权限看起来是一串数字。

[root@XXXX /]# service rpcbind start
Starting rpcbind:                                          [  OK  ]
[root@XXXX /]# service rpcidmapd start
Starting RPC idmapd:                                       [  OK  ]
[root@XXXX /]# service nfs start
Starting NFS services:                                     [  OK  ]
Starting NFS quotas:                                       [  OK  ]
Starting NFS mountd:                                       [  OK  ]
Starting NFS daemon:                                       [  OK  ]