Portmap Error: Unable to receive; errno = Connection reset by peer
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While setting and configuring NFS share on a server when you try to restart portmap service you get following error
[root@server mounted]# service portmap restart
pmap_getmaps rpc problem: RPC: Unable to receive; errno = Connection reset by peer
Stopping portmap: [FAILED]
Starting portmap: [ OK ]
[root@server mounted]#
pmap_getmaps rpc problem: RPC: Unable to receive; errno = Connection reset by peer
Stopping portmap: [FAILED]
Starting portmap: [ OK ]
[root@server mounted]#
Logs (tail -f /var/log/message) shows that portmap port is conflicting with some other service.
Dec 29 06:39:46 server portmap[32452]: cannot bind udp: Address already in use
Dec 29 06:39:46 server portmap[32452]: cannot bind udp: Address already in use
Dec 29 06:39:46 server portmap[32452]: cannot bind udp: Address already in use
Dec 29 06:39:46 server portmap[32452]: cannot bind udp: Address already in use
Dec 29 06:39:46 server portmap[32452]: cannot bind udp: Address already in use
Dec 29 06:39:46 server portmap[32452]: cannot bind udp: Address already in use
Dec 29 06:39:46 server portmap[32452]: cannot bind udp: Address already in use
I have searched on internet and found following commands which fixed the issue.
1) Stop portsentry service
[root@server mounted]# /etc/init.d/portsentry stop
2) Restart portmap service
[root@server mounted]# /etc/init.d/portmap restart
3) Start portsentry service
[root@server mounted]# /etc/init.d/portsentry start
Try to configure NFS now :)
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on Debian Linux i am getting below error while running showmount command, guys is there any workaround for this error.
RPC: failed to contact portmap (errno -5)
qa-vm2:~# showmount
mount clntudp_create: RPC: Port mapper failure – RPC: Unable to receive
qa-vm2:~#
qa-vm2:~#tail -f /var/log/messages
Mar 19 03:33:15 qa-vm2 kernel: NFSD: starting 90-second grace period
Mar 19 03:39:22 qa-vm2 kernel: nfsd: last server has exited
Mar 19 03:39:22 qa-vm2 kernel: nfsd: unexporting all filesystems
Mar 19 03:39:22 qa-vm2 kernel: RPC: failed to contact portmap (errno -5).
Mar 19 03:39:23 qa-vm2 kernel: NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory