Portmapper issue : cannout mount nfs export
Hi.
I don't know how to debug this situation.
I have a client that cannot mount a NFS share.
I have many clients with similar configuration
(Root over NFS/Etherboot/IP Kernel level autoconfiguration using DHCP).
Many clients can mount the share, but one cannot.
What should I try?
How do I tune a sarge box for high nfs load? (54 clients/read only)?
Is is true that in /etc/defaults/nfs-kernel-server you have to increase
the following number to match the number of remote clients?
I've read it in some places[1].
# Number of servers to start up
RPCNFSDCOUNT=16
How do I debug NFS?
Regards,
Nelson.-
[1]http://www.gentoo.org/doc/en/diskless-howto.xml
Relevant configuration:
Client: Recent Knoppix CD (testing and troubleshooting)
mount 10.0.0.1:/diskless/root /mnt
portmap: server localhost not responding, timed out
portmap: server localhost not responding, timed out
portmap: server localhost not responding, timed out
lockd_up: makesock failed, error=-5
portmap: server localhost not responding, timed out
Server: (debian sarge)
(Kernel package taken from sid)
node1:~# uname -a
Linux node1 2.6.10-1-686-smp #1 SMP Fri Mar 11 01:49:45 EST 2005 i686 GNU/Linux
Logs:
Mar 31 22:17:42 node1 portmap[3714]: connect from 10.0.0.7 to getport(mountd)
Mar 31 22:17:42 node1 rpc.mountd: export request from 10.0.0.7
Mar 31 22:17:46 node1 portmap[3715]: connect from 10.0.0.7 to dump()
Mar 31 22:17:46 node1 rpc.mountd: authenticated mount request from
10.0.0.7:967 for /diskless/root (/diskless/root)
/etc/exports
/diskless/root 10.0.0.0/255.255.0.0(ro,no_root_squash,no_all_squash,async)
/diskless/root 127.0.0.1(ro,no_root_squash,no_all_squash,async)
/etc/hosts
127.0.0.1 localhost
192.168.0.254 mdk master
# what should I do here ???
# Is : "127.0.0.1 localhost node1" a mistake? I think so.
10.0.0.1 node1
10.0.1.1 node1
10.0.2.1 node1
/etc/hosts.deny is empty (firewalled intranet with a few trusted users)
/etc/hosts.allow
ALL:ALL
mountd: ALL
portmap: 255.255.255.255 0.0.0.0
node1:~# ifconfig
eth0 Link encap:Ethernet HWaddr 00:50:8B:6D:B0:41
inet addr:10.0.0.1 Bcast:10.0.0.255 Mask:255.255.255.0
inet6 addr: fe80::250:8bff:fe6d:b041/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:23878 errors:0 dropped:0 overruns:0 frame:0
TX packets:25825 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2213534 (2.1 MiB) TX bytes:3358506 (3.2 MiB)
eth0:0 Link encap:Ethernet HWaddr 00:50:8B:6D:B0:41
inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
eth1 Link encap:Ethernet HWaddr 00:50:8B:6D:B0:62
inet addr:10.0.1.1 Bcast:10.0.1.255 Mask:255.255.255.0
inet6 addr: fe80::250:8bff:fe6d:b062/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2758 errors:0 dropped:0 overruns:0 frame:0
TX packets:2824 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:370344 (361.6 KiB) TX bytes:332492 (324.6 KiB)
eth2 Link encap:Ethernet HWaddr 00:50:8B:E7:50:F6
inet addr:10.0.2.1 Bcast:10.0.2.255 Mask:255.255.255.0
inet6 addr: fe80::250:8bff:fee7:50f6/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:10820 errors:0 dropped:0 overruns:0 frame:0
TX packets:15649 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1479310 (1.4 MiB) TX bytes:13210962 (12.5 MiB)
node1:~# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.0.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
10.0.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
10.0.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth2
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
0.0.0.0 192.168.0.254 0.0.0.0 UG 0 0 0 eth0
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and you are the easiest person to fool.
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