nameserver on server failed

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Deleted member 745

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Hi,

Anyone know how to fix this, I keep getting an email every so often with this email subject and content as below. Any idea how to fix it. Please?

---------------------------------
Subject : nameserver on server failed

nameserver failed @ Thu Mar 10 21:41:31 2011. A restart was attempted automagically.
Service Check Method: [check command]

Cmd Service Check Raw Output: named is not running
 
Had this sent me as well now.

------------------------------------------
Subject : [ipcheck] Problem with DNS setup on server

IMPORTANT: Do not ignore this email.

The hostname (server) resolves to . It should resolve to
64.191.121.238. Please be sure to correct /etc/hosts as well as the
'A' entry in zone file for the domain.

Some are all of these problems can be caused by /etc/resolv.conf
being setup incorrectly. Please check this file if you believe
everything else is correct.

You may be able to automatically correct this problem by using the
'Add an A entry for your hostname' option under 'Dns Functions' in
your Web Host Manager.
 
kuyenmotdivad said:
Had this sent me as well now.

------------------------------------------
Subject : [ipcheck] Problem with DNS setup on server

IMPORTANT: Do not ignore this email.

The hostname (server) resolves to . It should resolve to
64.191.121.238. Please be sure to correct /etc/hosts as well as the
'A' entry in zone file for the domain.

Some are all of these problems can be caused by /etc/resolv.conf
being setup incorrectly. Please check this file if you believe
everything else is correct.

You may be able to automatically correct this problem by using the
'Add an A entry for your hostname' option under 'Dns Functions' in
your Web Host Manager.
Click to expand...

I think vzcontrol, a controller in the virtualisation platform we are using is causing this to happen. I've reported this as a bug to OpenVZ, because the hostname should not be resetting itself.
 
What software is monitoring the VPSs? If named has started then the monitoring software is reporting a false positive for some reason. Can you do a ps -axf on the VPS in question? (if it is not *BSD)
 
We use OpenVZ as the virtualisation environment, the servers are cPanel servers.
Deebs said:
What software is monitoring the VPSs? If named has started then the monitoring software is reporting a false positive for some reason. Can you do a ps -axf on the VPS in question? (if it is not *BSD)
Click to expand...

root@server [~]# ps -axf
Warning: bad syntax, perhaps a bogus '-'? See /usr/share/doc/procps-3.2.7/FAQ
PID TTY STAT TIME COMMAND
1 ? Ss 0:00 init [3]
22204 ? S<s 0:00 /sbin/udevd -d
22518 ? Ss 0:00 syslogd -m 0
23553 ? Ss 0:00 /usr/sbin/sshd
7565 ? Ss 0:00 \_ sshd: root@pts/0
7573 pts/0 Ss 0:00 \_ -bash
9890 pts/0 R+ 0:00 \_ ps -axf
23566 ? Ss 0:00 xinetd -stayalive -pidfile /var/run/xinetd.pid
23733 ? Ss 0:00 /usr/sbin/exim -bd -q1h
23758 ? Ss 0:01 /usr/bin/spamd -d --allowed-ips=127.0.0.1 --pidfile=/var/run/spamd.pid --max-children=3 --max-spare=1
23759 ? S 0:04 \_ spamd child
23770 ? Ss 0:00 /usr/sbin/dovecot
23771 ? S 0:00 \_ dovecot-auth
23797 ? S 0:00 \_ pop3-login
23798 ? S 0:00 \_ pop3-login
23799 ? S 0:00 \_ imap-login
23800 ? S 0:00 \_ imap-login
7846 ? S 0:00 \_ imap
7847 ? S 0:00 \_ imap
7848 ? S 0:00 \_ imap
7856 ? S 0:00 \_ imap
7858 ? S 0:00 \_ imap
7862 ? S 0:00 \_ imap
7864 ? S 0:00 \_ imap
23838 ? Ss 0:00 pure-ftpd (SERVER)
23840 ? S 0:00 /usr/sbin/pure-authd -s /var/run/ftpd.sock -r /usr/sbin/pureauth
24020 ? Ss 0:00 crond
24406 ? S 0:00 cpdavd - accepting connections on 2077 and 2078
24431 ? S 0:00 cpsrvd - waiting for connections
24511 ? S 0:00 queueprocd - wait to process a task
25635 ? S 0:00 tailwatchd
25661 ? SN 0:00 cpanellogd - sleeping for logs
25741 ? Ss 0:00 /usr/sbin/saslauthd -m /var/run/saslauthd -a pam -n 2
25789 ? S 0:00 \_ /usr/sbin/saslauthd -m /var/run/saslauthd -a pam -n 2
25944 ? Ssl 0:00 /usr/sbin/named -u named
5504 ? S 0:00 /bin/sh /usr/bin/mysqld_safe --datadir=/var/lib/mysql --pid-file=/var/lib/mysql/server.pid
5563 ? Sl 0:00 \_ /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --log-error=/var/lib/mysql/server.err --pid-file=/var/lib/mysql/server.pid
5479 ? S< 0:00 litespeed (lshttpd)
5482 ? S< 0:00 \_ httpd (lscgid)
5483 ? S< 0:00 \_ litespeed (lshttpd)
5484 ? S< 0:00 \_ litespeed (lshttpd)
root@server [~]#
 
Right, I can see the process running. The fault has to lie with the monitoring software, what configs does that have to determine how named is running or not?
 
Have to be honest here and say I have never heard of that, I always use Monit, and within each VPS I would have a seperate Monit instance responsible for that VPS.

Aside from my preferences, do you have the config for chksvrd ?
 
Deebs said:
Have to be honest here and say I have never heard of that, I always use Monit, and within each VPS I would have a seperate Monit instance responsible for that VPS.

Aside from my preferences, do you have the config for chksvrd ?
Click to expand...

That is the standard cPanel service checker cron script.

The config is done via cPanel/WHM, web interface, and presents options for user/admin to enable a monitor and monitor it or not. Most options are selected. Named/BIND is both enabled and monitored.
 
Someone at cPanel is having a look at the server called Marlon, so hoefully he'll fix it. :)
 
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