centos 6 nfs: logs not showing anywhere
Can someone please tell me where NFS logs in centos 6? Or perhaps where I can tell NFS to send logs?
At the present time, there appears to be no such setting. Trying to get the thing to work without logs is quite frustrating.
[root@houston netshare]# locate nfs| grep log
[root@houston netshare]#
[root@houston netshare]# grep -Rni "nfs" /var/log
/var/log/anaconda.storage.log:23:20:41:33,962 DEBUG : registered device format class NFS as nfs
/var/log/anaconda.storage.log:24:20:41:33,962 DEBUG : registered device format class NFSv4 as nfs4
This is a day-old centos 6 install from livecd and yum update has been run.
[root@houston ~]# cat /etc/exports
/var/netshare 10.10.0.10(rw,sync,no_root_squash)
/var/netshare/esxi1 192.168.111.119(rw,sync,no_root_squash)
/var/netshare 192.168.111.101(rw,sync.no_root_squash)
[root@houston ~]# chkconfig --list | egrep '(nfs|rpc*)'
nfs 0:off 1:off 2:off 3:off 4:off 5:off 6:off
nfslock 0:off 1:off 2:off 3:on 4:on 5:on 6:off
rpcbind 0:off 1:off 2:on 3:on 4:on 5:on 6:off
rpcgssd 0:off 1:off 2:off 3:on 4:on 5:on 6:off
rpcidmapd 0:off 1:off 2:off 3:on 4:on 5:on 6:off
rpcsvcgssd 0:off 1:off 2:off 3:off 4:off 5:off 6:off
[root@houston ~]# ps aux | egrep '(nfs|rpc*)'
rpc 1482 0.0 0.0 18972 1012 ? Ss Dec06 0:00 rpcbind
root 1587 0.0 0.0 0 0 ? S Dec06 0:00 [fc_rport_eq]
rpcuser 1648 0.0 0.0 23344 1352 ? Ss Dec06 0:00 rpc.statd
root 1690 0.0 0.0 0 0 ? S Dec06 0:00 [rpciod/0]
root 1691 0.0 0.0 0 0 ? S Dec06 0:00 [rpciod/1]
root 1692 0.0 0.0 0 0 ? S Dec06 0:00 [rpciod/2]
root 1693 0.0 0.0 0 0 ? S Dec06 0:00 [rpciod/3]
root 29056 0.0 0.0 107304 280 ? Ss 11:36 0:00 rpc.rquotad
root 29060 0.0 0.0 21760 1264 ? Ss 11:36 0:00 rpc.mountd
root 29111 0.0 0.0 25160 760 ? Ss 11:36 0:00 rpc.idmapd
root 29116 0.0 0.0 0 0 ? S 11:36 0:00 [nfsd4]
root 29117 0.0 0.0 0 0 ? S 11:36 0:00 [nfsd4_callbacks]
root 29118 0.0 0.0 0 0 ? S 11:36 0:00 [nfsd]
root 29119 0.0 0.0 0 0 ? S 11:36 0:00 [nfsd]
root 29120 0.0 0.0 0 0 ? S 11:36 0:00 [nfsd]
root 29121 0.0 0.0 0 0 ? S 11:36 0:00 [nfsd]
root 29122 0.0 0.0 0 0 ? S 11:36 0:00 [nfsd]
root 29123 0.0 0.0 0 0 ? S 11:36 0:00 [nfsd]
root 29124 0.0 0.0 0 0 ? S 11:36 0:00 [nfsd]
root 29125 0.0 0.0 0 0 ? S 11:36 0:00 [nfsd]
root 29357 0.0 0.0 100992 748 pts/1 S+ 12:56 0:00 egrep (nfs|rpc*)
[root@houston ~]# iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination
ACCEPT all -- anywhere anywhere
REJECT all -- anywhere loopback/8 reject-with icmp-port-unreachable
ACCEPT all -- anywhere anywhere state RELATED,ESTABLISHED
ACCEPT tcp -- anywhere anywhere tcp dpt:http
ACCEPT tcp -- anywhere anywhere tcp dpt:https
ACCEPT tcp -- anywhere anywhere tcp dpt:51414
ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:ssh
ACCEPT udp -- anywhere anywhere state NEW udp dpt:sunrpc
ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:sunrpc
ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:nfs
ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:32803
ACCEPT udp -- anywhere anywhere state NEW udp dpt:filenet-rpc
ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:892
ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:47649
ACCEPT udp -- anywhere anywhere state NEW udp dpt:892
ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:rquotad
ACCEPT udp -- anywhere anywhere state NEW udp dpt:rquotad
ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:pftp
ACCEPT udp -- anywhere anywhere state NEW udp dpt:pftp
ACCEPT icmp -- anywhere anywhere
LOG all -- anywhere anywhere limit: avg 5/min burst 5 LOG level debug prefix `iptables denied: '
DROP all -- anywhere anywhere
Chain FORWARD (policy ACCEPT)
target prot opt source destination
DROP all -- anywhere anywhere
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
ACCEPT all -- anywhere anywhere
I've just had the same problem in 2016, using CentOS 6.5 on my workstation, and CentOS 7 on the client (a Vagrant box on the same host). My specific problem was the same as the OP's, I couldn't find any nfsd logging.
Use rpcdebug to Enable NFS Logging
The answer for me, for anyone else coming to this question in the future, was to use the command (as root/sudo on the server end):
rpcdebug -m nfsd all
to turn on full debugging to /var/log/messages
This will enable the kind of output shown in ewwhite's post above when you issue the mount command from the client.
to turn off again, use
rpcdebug -m nfsd -c all
you can reduce the amount of debug info by replacing the keyword 'all' with a specific module. These are listed in
man rpcdebug
Add Startup Flags to rpc.mountd and rpc.idmapd to Increase Debug
You can get more debug info by adding -d all to rpc.mountd and -vvv to rpc.idmapd.
Do this by editing `/etc/sysconfig/nfs' and setting:
...
RPCMOUNTDOPTS=" -d all"
...
RPCIDMAPDARGS="-vvv"
...
You will need to restart the nfs service (as root/sudo) for this to apply:
service nfs restart
This is the CentOS 6.n approach. Under CentOS 7 you would need to look at systemctl restart [servicename] instead. [servicename] may well be nfs but I haven't done this under CentOS 7 yet.
For clarity, these debug log messages will be written to /var/log/messages.
Did you look in /var/log/messages? NFS logs there.
Dec 7 08:36:25 OGC_Mirror kernel: RPC: Registered named UNIX socket transport module.
Dec 7 08:36:25 OGC_Mirror kernel: RPC: Registered udp transport module.
Dec 7 08:36:25 OGC_Mirror kernel: RPC: Registered tcp transport module.
Dec 7 08:36:25 OGC_Mirror kernel: RPC: Registered tcp NFSv4.1 backchannel transport module.
Dec 7 08:36:25 OGC_Mirror kernel: Installing knfsd (copyright (C) 1996 [email protected]).
Dec 7 08:36:25 OGC_Mirror rpc.mountd[2459]: Version 1.2.3 starting
Dec 7 08:36:25 OGC_Mirror kernel: NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
Dec 7 08:36:25 OGC_Mirror kernel: NFSD: starting 90-second grace period