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Bind 9 dying?
https://forum.linode.com/viewtopic.php?f=19&t=1058		 Page 1 of 1
Author:  jp [ Mon Aug 02, 2004 7:13 am ]
Post subject:  Bind 9 dying?
Hello.

I have Debian stable deployed at a Linode 64, and although everything else has been working perfectly, i got a problem with bind.

I have the original (no backports) bind9 packages from woody installed, and had two problems with it already:

- In one day it just stopped answering. The named processes were there, but wouldn't work. Tried stopping bind, and that didn't work either. I had to kill -9 the named processes.

- I found that bind had silently died this night. Had to restart

I use nothing special/esoteric in my config. The Debian default plus my /etc/bind/db.* files.

I know there are two bugs in the Debian BTS describin this. What disappoints me is that it happened after working nicely for two months.

So... Does anyone know any tricks I could use? I don't see another DNS server I could use. I had problems with MaraDNS (although it's great), and djbdns seems to strange to me.

The temporary solution I am using is to restart bing daily.

Thanks for any help!

J.
Author:  veggieman [ Tue Oct 05, 2004 8:17 am ]
Post subject:  Bind named.conf: permission denied
After installing some extra things and editing the named.conf file with a new zone and uploading the file through Webmin the Bind server crashes.

In the messages log it says:
Quote:
named[765]: starting BIND 9.2.4rc6 -u named
named[765]: using 1 CPU
named[773]: loading configuration from '/etc/named.conf'
named[773]: none:0: open: /etc/named.conf: permission denied
named[773]: loading configuration: permission denied
named[773]: exiting (due to fatal error)


All I did was upload the named.conf through the webmin file manager uploader. Apparently that changed the owner to root.

--------------------------------
Update
After various attempts I changed the user:group ownership to root:named for both /etc and named.conf. Then the Name server started back up.

Since I fixed it after I posted this I'll leave it posted for information purposes.
Author:  jp [ Tue Oct 05, 2004 8:27 am ]
Post subject: 
Well that is not the problem I had. Bind starts for me, but is killed later.

Anyway, these are the permissions ihere:

Code:
-rw-r--r--    1 root     root          237 Jun  6 16:54 db.0
-rw-r--r--    1 root     root          271 Jun  6 16:54 db.127
-rw-r--r--    1 root     root          237 Jun  6 16:54 db.255
-rw-r--r--    1 root     root          932 Oct  2 08:58 db.randomnode.info
-rw-r--r--    1 root     root         2769 Jun  6 16:54 db.root
-rw-r--r--    1 root     root         1942 Oct  1 23:10 named.conf
-rw-------    1 root     root           77 Jun  6 16:35 rndc.key


jp
Author:  veggieman [ Tue Oct 05, 2004 8:48 am ]
Post subject: 
Quote:
Bind starts for me, but is killed later

It starts but then stops.
From looking at your file permissions listing I would not be surprised if it has the same error in your /logs/messages file.

The group ownership for named.conf should be "named".
I have it like this now:
Quote:
-rw-r----- 1 root named 969 Oct 5 07:26 named.conf

and apparently also for /etc:
Quote:
drwxr-xr-x 48 root named 4096 Oct 5 08:41 etc


And also all the zone data files in /var/named should be user and group owned by "named".
That's because the Bind named server is started up as user "named" on my CentOS system.
Quote:
named[765]: starting BIND 9.2.4rc6 -u named


I found out about that through this reference:
http://www.boran.com/security/sp/bind9_20010430.html

It could be different on your Debian system so that you may not need that for your system. If you have a different problem I would suggest examining in detail your log files to see if any errors are logged.
Author:  jp [ Tue Oct 05, 2004 9:32 am ]
Post subject: 
Quote:
From looking at your file permissions listing I would not be surprised if it has the same error in your /logs/messages file.

The group ownership for named.conf should be "named".


Well, it works for a whole day for me before dying... And the files have read access to all.
I remember trying to find something in the logs, but there was nothing related to file permissions.

jp
Author:  jp [ Sat Oct 09, 2004 8:01 pm ]
Post subject:  Fixed!
Well, in case someone reading this thread wonders what really was happening: I had set up a too small swap partition, and MySQL and Apache were using too much memory:

Quote:
http://www.linode.com/forums/viewtopic.php?p=5174


It's fixed now...

jp
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