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di1337
n00b
Joined: 17 Nov 2005
Posts: 16
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 Posted: Sun Jul 30, 2006 9:36 am Post subject: /etc/hosts is ignored |
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Hi fellow gentoo'ers,
I am using gentoo to run a file-server on my home network. It works very well, but one thing keeps bugging me: My /etc/hosts file appears to be ignored. The only relevant line is:
| Code: |
127.0.0.1 server server.home localhost
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This line should be correct, but still, I cannot adress my server as server, server.home or locahost while I'm working on it. Does anyone have any clues for me?
Thanks in advance! |
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wynn
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Joined: 01 Apr 2005
Posts: 2421
Location: UK
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| Posted: Sun Jul 30, 2006 9:47 am Post subject: |
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The manpage hosts(5) has
| Quote: | This file is a simple text file that associates IP addresses with hostnames, one line per IP address. For each host a single line should be present with the following information:
IP_address canonical_hostname [aliases...]
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and here the line starts with
| Code: | | 127.0.0.1 localhost |
Perhaps as localhost==127.0.0.1 it has to come first and server and server.home are aliases.
_________________
The avatar is jorma, a "duck" from "Elephants Dream": the film and all the production materials have been made available under a Creative Commons Attribution 2.5 License, see orange.blender.org for details. |
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di1337
n00b
Joined: 17 Nov 2005
Posts: 16
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| Posted: Sun Jul 30, 2006 10:06 am Post subject: Not working :-( |
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I followed your advice and put localhost in front of the other names, but it didn't help, even after a reboot. So I tried removing all the other names. The /etc/hosts file now looks like this:
| Code: | # /etc/hosts: This file describes a number of hostname-to-address
# mappings for the TCP/IP subsystem. It is mostly
# used at boot time, when no name servers are running.
# On small systems, this file can be used instead of a
# "named" name server. Just add the names, addresses
# and any aliases to this file...
# $Header: /home/cvsroot/gentoo-src/rc-scripts/etc/hosts,v 1.8 2003/08/04 20:12:25 azarah Exp $
#
127.0.0.1 localhost
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Still, I can't address the server as localhost. Is something supposed to load /etc/hosts on boot time that might not run here? |
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wynn
Advocate
Joined: 01 Apr 2005
Posts: 2421
Location: UK
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| Posted: Sun Jul 30, 2006 1:35 pm Post subject: |
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So, logged in to your server, you can't get
| Code: | $ ping -c1 localhost
PING localhost (127.0.0.1) 56(84) bytes of data.
64 bytes from localhost (127.0.0.1): icmp_seq=1 ttl=64 time=0.019 ms
--- localhost ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.019/0.019/0.019/0.000 ms
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What does it return?
| Quote: | | Is something supposed to load /etc/hosts on boot time that might not run here? |
Not as far as I know, if you have the line
in /etc/nsswitch.conf, then anything needing get an IP address from a name will look at the local files first before going off to DNS.
Do you get similar output as this for "ifconfig lo"?
| Code: | # ifconfig lo
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:191 errors:0 dropped:0 overruns:0 frame:0
TX packets:191 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:34996 (34.1 Kb) TX bytes:34996 (34.1 Kb)
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_________________
The avatar is jorma, a "duck" from "Elephants Dream": the film and all the production materials have been made available under a Creative Commons Attribution 2.5 License, see orange.blender.org for details. |
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di1337
n00b
Joined: 17 Nov 2005
Posts: 16
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| Posted: Sun Jul 30, 2006 1:49 pm Post subject: |
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When I instruct the server to ping itself, i get:
| Code: | ping: unknown host localhost
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Other than resolving names in /etc/hosts, everything works. My interfaces are all up, even the loopback interface, and I can use 127.0.0.1. I just can't get localhost to be resolved to it. The nsswitch.conf file also appears to be correct. |
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wynn
Advocate
Joined: 01 Apr 2005
Posts: 2421
Location: UK
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| Posted: Sun Jul 30, 2006 2:03 pm Post subject: |
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Here, logging in to another machine on the local network
| Code: | lightfoot ~ # ssh greyarea
Last login: Sun Jul 30 14:57:25 2006 from lightfoot.etowers.net
greyarea ~ # ping -c1 localhost
PING localhost (127.0.0.1) 56(84) bytes of data.
64 bytes from localhost (127.0.0.1): icmp_seq=1 ttl=64 time=0.022 ms
--- localhost ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.022/0.022/0.022/0.000 ms |
| Quote: | | When I instruct the server to ping itself, i get: |
Without giving away any secrets  is there some special way you log in to your server? I suppose it's in a colo a thousand miles away and you can't login at its console (not that that should make any difference).
_________________
The avatar is jorma, a "duck" from "Elephants Dream": the film and all the production materials have been made available under a Creative Commons Attribution 2.5 License, see orange.blender.org for details. |
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di1337
n00b
Joined: 17 Nov 2005
Posts: 16
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| Posted: Sun Jul 30, 2006 2:16 pm Post subject: |
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Actually, it's located right here in my living room 
But:good news
After resetting all network information for the fourth time today, everything just automagically works. Actually, I'm quite curious about what caused the problem, but I guess we'll probably never know.. anyhow, thanks for all the help . |
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wynn
Advocate
Joined: 01 Apr 2005
Posts: 2421
Location: UK
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| Posted: Sun Jul 30, 2006 3:39 pm Post subject: |
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I'm glad you've got it working, I'd run out of ideas
_________________
The avatar is jorma, a "duck" from "Elephants Dream": the film and all the production materials have been made available under a Creative Commons Attribution 2.5 License, see orange.blender.org for details. |
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