Hi All, I have 2 nodes node1.clusterenv.com 192.20.20.11 node2.clusterenv.com 192.20.20.21 DNS is configured on node1.clusterenv.com Everything works fine except I'm not able to do nslookup from node1.clusterenv.com (where the dns daemon is running). The Bind Version I'm running id :- "BIND 9.3.6-P1-RedHat-9.3.6-4.P1.el5" Please find the attached named.conf file and other associated files. Looking forward to hear from you all Thanks and Regards Nidhin Tomson
Does Code: dig @localhost clusterenv.com work? What are the outputs of Code: netstat -tap and Code: netstat -uap ? Any errors in your logs?
Hi Falko, Thanks for your response. Please find below the requested o/p :- [root@node1 ~]# netstat -tap Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 localhost.localdomain:2208 *:* LISTEN 3218/hpiod tcp 0 0 *:nfs *:* LISTEN - tcp 0 0 *:vce *:* LISTEN 3774/ricci tcp 0 0 node1.clusterenv.com:21064 *:* LISTEN - tcp 0 0 *:814 *:* LISTEN 2752/rpc.statd tcp 0 0 *:sunrpc *:* LISTEN 2654/portmap tcp 0 0 node1.clusterenv.com:http *:* LISTEN 3426/httpd tcp 0 0 *:16851 *:* LISTEN 3576/modclusterd tcp 0 0 *:47923 *:* LISTEN - tcp 0 0 *:948 *:* LISTEN 3313/rpc.mountd tcp 0 0 node1.clusterenv.com:domain *:* LISTEN 5127/named tcp 0 0 localhost.localdomai:domain *:* LISTEN 5127/named tcp 0 0 *:917 *:* LISTEN 3281/rpc.rquotad tcp 0 0 *:telnet *:* LISTEN 3259/xinetd tcp 0 0 localhost.localdomain:ipp *:* LISTEN 3245/cupsd tcp 0 0 *:50008 *:* LISTEN 2885/ccsd tcp 0 0 localhost.localdomain:rndc *:* LISTEN 5127/named tcp 0 0 localhost.localdomain:smtp *:* LISTEN 3405/master tcp 0 0 localhost.localdomain:2207 *:* LISTEN 3223/python tcp 0 0 node1.clusterenv.com:41539 192.20.20.31:iscsi-target ESTABLISHED 2397/iscsid [root@node1 ~]# netstat -uap Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name udp 0 0 *:nfs *:* - udp 0 0 localhost.localdomain:57232 localhost.locald:domain ESTABLISHED 3576/modclusterd udp 0 0 *:914 *:* 3281/rpc.rquotad udp 0 0 node1.clusterenv.com:63771 198.41.0.4:domain ESTABLISHED 5127/named udp 0 0 node1.cluste:netsupport *:* 2891/aisexec udp 0 0 node1.clusterenv.com:5149 *:* 2891/aisexec udp 0 0 239.192.83.8:netsupport *:* 2891/aisexec udp 0 0 node1.clusterenv.com:55975 198.41.0.4:domain ESTABLISHED 5127/named udp 0 0 *mirr *:* 2752/rpc.statd udp 0 0 *:811 *:* 2752/rpc.statd [root@node1 ~]# dig @localhost clusterenv.com ; <<>> DiG 9.3.6-P1-RedHat-9.3.6-4.P1.el5 <<>> @localhost clusterenv.com ; (1 server found) ;; global options: printcmd ;; connection timed out; no servers could be reached [root@node1 ~]# ====================== There is no specific error messages in /var/log/messages regarding the dns..
Hi Falko, I have added the "listen-on port" keyword to the global options in named.conf. assuming it will enable my named to listen on udp port 53. ========================================== listen-on port 53 { 127.0.0.1 port 53; 192.20.20.11 port 53; }; ========================================== I have already disabled the firewall and selinux for this host. even then i get the same timeout error for local nslookup. Could you help me figure-out the cause behind my issue. below I'm pasting my netstat and nslookup outputs.. [root@node1 ~]# netstat -tap Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 localhost.localdomain:2208 *:* LISTEN 3231/hpiod tcp 0 0 *:961 *:* LISTEN 3326/rpc.mountd tcp 0 0 *:nfs *:* LISTEN - tcp 0 0 *:930 *:* LISTEN 3294/rpc.rquotad tcp 0 0 *:vce *:* LISTEN 3720/ricci tcp 0 0 node1.clusterenv.com:21064 *:* LISTEN - tcp 0 0 *:58091 *:* LISTEN - tcp 0 0 *:sunrpc *:* LISTEN 2687/portmap tcp 0 0 node1.clusterenv.com:http *:* LISTEN 3439/httpd tcp 0 0 *:16851 *:* LISTEN 3588/modclusterd tcp 0 0 node1.clusterenv.com:domain *:* LISTEN 4509/named tcp 0 0 localhost.localdomai:domain *:* LISTEN 4509/named tcp 0 0 *:telnet *:* LISTEN 3272/xinetd tcp 0 0 localhost.localdomain:ipp *:* LISTEN 3258/cupsd tcp 0 0 *:50008 *:* LISTEN 2897/ccsd tcp 0 0 *:824 *:* LISTEN 2762/rpc.statd tcp 0 0 localhost.localdomain:rndc *:* LISTEN 4509/named tcp 0 0 localhost.localdomain:smtp *:* LISTEN 3418/master tcp 0 0 localhost.localdomain:2207 *:* LISTEN 3236/python [root@node1 ~]# netstat -uap Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name udp 0 0 *:nfs *:* - udp 0 0 node1.cluste:netsupport *:* 2903/aisexec udp 0 0 node1.clusterenv.com:5149 *:* 2903/aisexec udp 0 0 239.192.83.8:netsupport *:* 2903/aisexec udp 0 0 *:927 *:* 3294/rpc.rquotad udp 0 0 *:38562 *:* 3524/avahi-daemon: udp 0 0 *:818 *:* 2762/rpc.statd udp 0 0 node1.clusterenv.com:domain *:* 4509/named udp 0 0 localhost.locald:domain *:* 4509/named udp 0 0 *:821 *:* 2762/rpc.statd udp 0 0 *:958 *:* 3326/rpc.mountd udp 0 0 *:tftp *:* 3272/xinetd udp 0 0 *:44369 *:* - udp 0 0 node1.clusterenv.com:34909 198.41.0.4:domain ESTABLISHED 4509/named udp 0 0 *:mdns *:* 3524/avahi-daemon: udp 0 0 *:sunrpc *:* 2687/portmap udp 0 0 localhost.localdomain:34419 localhost.locald:domain ESTABLISHED 3588/modclusterd udp 0 0 *:ipp *:* 3258/cupsd [root@node1 ~]# dig @localhost clusterenv.com ; <<>> DiG 9.3.6-P1-RedHat-9.3.6-4.P1.el5 <<>> @localhost clusterenv.com ; (1 server found) ;; global options: printcmd ;; connection timed out; no servers could be reached [root@node1 ~]#
Hi Falko, Please find the requested o/p. [root@node1 ~]# iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination [root@node1 ~]# =================== By default I have set iptables/selinux to disable status.But still i'm getting same "connection timeout error" when i try to do nslookup from localhost. See below the latest nslookup o/p. [root@node1 ~]# nslookup node51 ;; connection timed out; no servers could be reached [root@node1 ~]# Please suggest me how to proceed further. Thanks and Regards Nidhin Tomson
