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Dns configuration error in Redhat

 
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Operating Systems Linux Red Hat Dns configuration error in Redhat
# 1  
Old 08-25-2009
Dns configuration error in Redhat

Dear All I want to configure DNS in redhat linux. i am following these steps but when i restart the services it is showing status failed. Please any body can help me on urgent basis.

#service named restart

Stopping named: [FAILED]
Starting named: [FAILED]


---------Edited in named.conf file---------------------

options {
listen-on port 53 { nms.example.com; 10.13.74.162; 127.0.0.1; };
directory "/var/named";
query-source port 53;
allow-query { nms.example.com; 10.13.0.0/24; };
forwarders { 10.11.8.14; };
forward only;
};

zone "example.com" IN {
type master; file "example.com.zone";
allow-update { none; };
forwarders { 10.11.8.14; };
};


zone"74.13.10.in-addr.arpa" IN {
type master; file "10.13.74.zone";
allow-update { none; };
forwarders { };
};


---After that----

#cd /var/named/chroot/var/named
#vi example.com.zone

Quote:
$TTL 86400 @ IN SOA nms.example.com. root.nms.example.com. (
2001101100 ; serial (d. adams)
28800 ; refresh
14400 ; retry
3600000 ; expiry
0 ) ; minimum
IN NS nms.example.com.
IN A 10.13.74.162 example.com.
IN A 10.13.74.162 nms.example.com.
IN A 10.13.74.162
www IN A 10.13.74.162
www1 IN CNAME nms.example.com.
www2 IN CNAME nms.example.com.
www3 IN CNAME nms.example.com.
@ IN MX 10 nms.example.com.
nms IN MX 10 nms.example.com.

-------------configuration of 10.13.74.162.zone file--------------------


#vi 10.13.74.162.zone

[quote]
$TTL 86400 @ IN SOA nms.example.com. root.nms.example.com. ( 4 10800 3600 604800 86400 )
IN NS nms.example.com.
162.74.13.10.in-addr.arpa.
IN PTR nms.example.com.


After configuring i restart the service. as i have see the log messages looking like this.

#cd /var/log/ #vi messages

Quote:
Aug 25 21:08:47 nms named[4959]: loading configuration from '/etc/named.conf'
Aug 25 21:08:47 nms named[4959]: /etc/named.conf:15: undefined ACL 'nms.example.com' \
Aug 25 21:08:47 nms named[4959]: not listening on any interfaces
Aug 25 21:08:47 nms named[4959]: /etc/named.conf:19: undefined ACL 'nms.example.com'
Aug 25 21:08:47 nms named[4959]: loading configuration: not found
Aug 25 21:08:47 nms named[4959]: exiting (due to fatal error)

PLease help me..... Thanks in Advance tapan

Last edited by sahu.tapan; 08-25-2009 at 07:25 AM..
# 2  
Old 08-25-2009
It looks like you are using the chroot setup but loading named.conf from /etc.
You need to modify /etc/sysconfig/named to include the following directive
Code:
ROOTDIR=/var/named/chroot

After you have modified named.conf you should always test it using
Code:
service named testconfig

The ACL (Access Control List) errors are due to the fact that you are using "nms.example.com" in the listen-on and allow-query directives in the options statement. You cannot use FQDNs this way. You must do it something like this.
Code:
acl nms {
    10.13.0.123;
};
......
listen-on port 53 { nms; 10.13.74.162; 127.0.0.1; };
......
allow-query { nms; 10.13.0.0/24; };

# 3  
Old 08-26-2009
Thanks fpmurphy!!!

Regards,
Tapan

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