Hi All I configured a DNS on FC8. I followed the howtoforge tutorial http://howtoforge.net/linux_bind9_and_caching_nameserver when i try to resolve www.testdomain.net from another machine (a machine other than the one which i configured DNS), it is not able to resolve the same. [root@localhost ~]# ping www.testdomain.net ping: unknown host www.testdomain.net If i ping it from the same machine on which DNS is configured it is pinging. [root@localhost]# ping www.testdomain.net PING www.testdomain.net (192.168.0.19) 56(84) bytes of data. 64 bytes from 192.168.0.19: icmp_seq=1 ttl=64 time=0.036 ms 64 bytes from 192.168.0.19: icmp_seq=2 ttl=64 time=0.048 ms --- www.testdomain.net ping statistics --- 2 packets transmitted, 2 received, 0% packet loss, time 999ms rtt min/avg/max/mdev = 0.036/0.042/0.048/0.006 ms [root@localhost]# When i check for the status of my namd service its giving the following output. [root@localhost ~]# /etc/init.d/named status version: 9.5.0b3 number of zones: 16 debug level: 0 xfers running: 0 xfers deferred: 0 soa queries in progress: 0 query logging is OFF recursive clients: 0/0/1000 tcp clients: 0/100 server is up and running named-sdb dead but pid file exists [root@localhost ~]# what does this named-sdb dead but pid file exists means ? if i do telnet 192.168.0.19 53 from a remote machine its giving the following error. telnet 192.168.0.19 53 Trying 192.168.0.19... telnet: connect to address 192.168.0.19: Connection refused [root@localhost ~]# if i do telnet localhost 53 from the same machine where DNS is configured its connecting to port 53. Why is it happening so ? Whats wrong with my DNS configuration ? Looking forward to hear from you Thanks and Regards Nidhin Tomson
Thanks Falko for your response. The output for netstat -tap is as follows : - [root@localhost ~]# netstat -tap Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 *:mysql *:* LISTEN 29811/mysqld tcp 0 0 *op3 *:* LISTEN 2291/tcpserver tcp 0 0 localhost.localdomain:783 *:* LISTEN 1841/spamd.pid tcp 0 0 *:sunrpc *:* LISTEN 1584/rpcbind tcp 0 0 192.168.122.1:domain *:* LISTEN 2054/dnsmasq tcp 0 0 localhost.localdomai:domain *:* LISTEN 1726/named-sdb tcp 0 0 localhost.localdomain:ipp *:* LISTEN 2065/cupsd tcp 0 0 *:smtp *:* LISTEN 2295/tcpserver tcp 0 0 localhost.localdomain:rndc *:* LISTEN 1726/named-sdb tcp 0 0 *:56251 *:* LISTEN 1603/rpc.statd tcp 0 0 *:imaps *:* LISTEN 2217/couriertcpd tcp 0 0 *:courierpassd *:* LISTEN 1831/xinetd tcp 0 0 *:imap *:* LISTEN 2207/couriertcpd tcp 0 0 *:http *:* LISTEN 30939/httpd tcp 0 0 localhost6.localdoma:domain *:* LISTEN 1726/named-sdb tcp 0 0 *:ssh *:* LISTEN 1821/sshd tcp 0 0 localhost6.localdomain:rndc *:* LISTEN 1726/named-sdb tcp 0 0 ::ffff:192.168.0.19:ssh ::ffff:192.168.0.4:28394 ESTABLISHED 5002/0 [root@localhost ~]# There is no errors in /var/log/messages If i restart the named service the output of /var/log/messages is as follows : - May 28 09:06:18 localhost named-sdb[1726]: received control channel command 'stop' May 28 09:06:18 localhost named-sdb[1726]: shutting down: flushing changes May 28 09:06:18 localhost named-sdb[1726]: stopping command channel on 127.0.0.1#953 May 28 09:06:18 localhost named-sdb[1726]: stopping command channel on ::1#953 May 28 09:06:18 localhost named-sdb[1726]: no longer listening on ::1#53 May 28 09:06:18 localhost named-sdb[1726]: no longer listening on 127.0.0.1#53 May 28 09:06:19 localhost named-sdb[1726]: exiting May 28 09:06:21 localhost named-sdb[5108]: starting BIND 9.5.0b3 -u named -t /var/named/chroot May 28 09:06:21 localhost named-sdb[5108]: found 1 CPU, using 1 worker thread May 28 09:06:21 localhost named-sdb[5108]: SDB ldap zone database module loaded. May 28 09:06:21 localhost named-sdb[5108]: SDB postgreSQL DB zone database module loaded. May 28 09:06:21 localhost named-sdb[5108]: SDB sqlite3 DB zone database module loaded. May 28 09:06:21 localhost named-sdb[5108]: SDB directory DB zone database module loaded. May 28 09:06:21 localhost named-sdb[5108]: loading configuration from '/etc/named.conf' May 28 09:06:21 localhost named-sdb[5108]: the working directory is not writable May 28 09:06:21 localhost named-sdb[5108]: listening on IPv6 interface lo, ::1#53 May 28 09:06:21 localhost named-sdb[5108]: listening on IPv4 interface lo, 127.0.0.1#53 May 28 09:06:21 localhost named-sdb[5108]: default max-cache-size (33554432) applies May 28 09:06:21 localhost named-sdb[5108]: automatic empty zone: 127.IN-ADDR.ARPA May 28 09:06:21 localhost named-sdb[5108]: automatic empty zone: 254.169.IN-ADDR.ARPA May 28 09:06:21 localhost named-sdb[5108]: automatic empty zone: 2.0.192.IN-ADDR.ARPA May 28 09:06:21 localhost named-sdb[5108]: automatic empty zone: 255.255.255.255.IN-ADDR.ARPA May 28 09:06:21 localhost named-sdb[5108]: automatic empty zone: 0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.IP6.ARPA May 28 09:06:21 localhost named-sdb[5108]: automatic empty zone: D.F.IP6.ARPA May 28 09:06:21 localhost named-sdb[5108]: automatic empty zone: 8.E.F.IP6.ARPA May 28 09:06:21 localhost named-sdb[5108]: automatic empty zone: 9.E.F.IP6.ARPA May 28 09:06:21 localhost named-sdb[5108]: automatic empty zone: A.E.F.IP6.ARPA May 28 09:06:21 localhost named-sdb[5108]: automatic empty zone: B.E.F.IP6.ARPA May 28 09:06:21 localhost named-sdb[5108]: default max-cache-size (33554432) applies: view _bind May 28 09:06:21 localhost named-sdb[5108]: command channel listening on 127.0.0.1#953 May 28 09:06:21 localhost named-sdb[5108]: command channel listening on ::1#953 May 28 09:06:21 localhost named-sdb[5108]: zone 0.in-addr.arpa/IN: NS '0.in-addr.arpa' has no address records (A or AAAA) May 28 09:06:21 localhost named-sdb[5108]: zone 0.in-addr.arpa/IN: loaded serial 0 May 28 09:06:21 localhost named-sdb[5108]: zone 1.0.0.127.in-addr.arpa/IN: NS '1.0.0.127.in-addr.arpa' has no address records (A or AAAA) May 28 09:06:21 localhost named-sdb[5108]: zone 1.0.0.127.in-addr.arpa/IN: loaded serial 0 May 28 09:06:21 localhost named-sdb[5108]: zone 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa/IN: NS '1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa' has no address records (A or AAAA) May 28 09:06:21 localhost named-sdb[5108]: zone 1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa/IN: loaded serial 0 May 28 09:06:21 localhost named-sdb[5108]: zone localhost.localdomain/IN: loaded serial 0 May 28 09:06:21 localhost named-sdb[5108]: zone localhost/IN: loaded serial 0 May 28 09:06:21 localhost named-sdb[5108]: zone allgolan.net/IN: loaded serial 42 May 28 09:06:21 localhost named-sdb[5108]: running May 28 09:06:21 localhost named-sdb[5108]: zone allgolan.net/IN: sending notifies (serial 42) And one more thing i did not install caching-nameserver since i could not find i t in the FC 8 repose. [root@localhost ~]# yum install chaching-nameserver updates 100% |=========================| 2.3 kB 00:00 Setting up Install Process Parsing package install arguments No package chaching-nameserver available. Nothing to do [root@localhost ~]# When i do an nslookup its giving non-otherative answer. [root@localhost ~]# nslookup www.google.com Server: 127.0.0.1 Address: 127.0.0.1#53 Non-authoritative answer: www.google.com canonical name = www.l.google.com. Name: www.l.google.com Address: 64.233.189.99 Name: www.l.google.com Address: 64.233.189.147 Name: www.l.google.com Address: 64.233.189.104 [root@localhost ~]# whats is wrong with my instllation ? Looking forward to hear from you Thanks and Regards Nidhin Tomson
dnsmasp is listening on 192.168.122.1, but I can't find any DNS server listening on 192.168.0.19. What's the output of Code: ifconfig ?
Hi Falko Thanks for the response. The output of ifconfig is as follows :- eth0 Link encap:Ethernet HWaddr 00:13:20:EB3:E0 inet addr:192.168.0.19 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: fe80::213:20ff:feeb:d3e0/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:386721 errors:0 dropped:0 overruns:0 frame:0 TX packets:75141 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:33815639 (32.2 MiB) TX bytes:6860073 (6.5 MiB) Interrupt:20 Base address:0xe000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:2098 errors:0 dropped:0 overruns:0 frame:0 TX packets:2098 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:3585737 (3.4 MiB) TX bytes:3585737 (3.4 MiB) virbr0 Link encap:Ethernet HWaddr 16:A0:FF:CF:6B:1A inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0 inet6 addr: fe80::14a0:ffff:fecf:6b1a/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:35 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:5654 (5.5 KiB) [root@localhost src]# I got rid of the named.sdb faild but pid file exists error by removing the bind-sdb package . Is that the right way to do ? Why the DNS is not listening on 192.168.0.19 ? If i check named status it gives the following output :- [root@localhost src]# /etc/init.d/named status version: 9.5.0b3 number of zones: 16 debug level: 0 xfers running: 0 xfers deferred: 0 soa queries in progress: 0 query logging is OFF recursive clients: 0/0/1000 tcp clients: 0/100 server is up and running named (pid 1721) is running... [root@localhost src]# Looking forward to hear from you Thanks and Regards Nidhin Tomson
The error was that DNS quieres were listening only on localhost. i just aaded the ip of the machine wehere DNS is running to the listen -on port option. options { listen-on port 53 { 127.0.0.1; 192.168.0.19; <--- This entry will not be there by default. We have to manually add it. };
