0 Replies Latest reply: Jul 23, 2013 10:15 AM by e29b9b8c-d2c9-4dfb-8203-3a39dce14c13 RSS

    Cannot ping vip  - where does resolution happen?

    e29b9b8c-d2c9-4dfb-8203-3a39dce14c13

      All I set up my new rac configuration. Here is the overview

       

      • I configured scan using dns server on my openfiler box - the nslookup returns the expected results.
      • Using the scan address I could NOTconnect to the instance
      • using the vip address I was able to connect

       

      I realized my hosts file had _ (underscores)  rather than - (hyphens)  ie and did not match my entries in the dns

      so I changed them to - as below  and bounced the server

       

      opgx280.oracle.lab ~ # cat /etc/hosts

      127.0.0.1       localhost.localdomain                 localhost

      # Public Network - (eth0)

      192.168.1.200   dim4700

      192.168.1.202   opgx280

      192.168.1.204   opgx620

      192.168.1.205   openfiler

       

      # Private Interconnect - (eth1)

      192.168.2.200   dim4700-interconnect

      192.168.2.202   opgx280-interconnect

      192.168.2.204   opgx620-interconnect

      192.168.2.225   openfiler-interconnect

       

      # Public Virtual IP (VIP) addresses - (eth0:1)

      192.168.1.220   dim4700-vip

      192.168.1.222   opgx280-vip

      192.168.1.224   opgx620-vip

       

      vi /srv/named/data/oracle.lab.zone

      ...

      @ IN NS openfiler.oracle.lab.

      localhost       IN A 127.0.0.1

      dim3000         IN A 192.168.1.203

      openfiler       IN A 192.168.1.205

      opgx280         IN A 192.168.1.202

      dim4700         IN A 192.168.1.200

      opgx620         IN A 192.168.1.204

      opgx280-vip     IN A 192.168.1.222

      dim4700-vip     IN A 192.168.1.220

      opgx620-vip     IN A 192.168.1.224

      lab-cluster-scan IN A 192.168.1.187

                           IN A 192.168.1.188

                           IN A 192.168.1.189

       

      since then, I lost ability to connect using the  vip AND I cannot ping the vip NOR can I ping the vip ip address

       

      From what I can tell - oracle manages resolution of the vip

      So I believe my changing of the /etc/hosts entry - broke oracle's resolution.

       

      since the ip is indeed virtual It makes sense from a  system prespective that it would NOT resolve. (What would it resolve to?)

      So I need to tell oracle about the new hosts name

       

       

      opgx280.oracle.lab ~ # ifconfig

      eth0      Link encap:Ethernet  HWaddr 00:12:3F:4E:CA:A0

                inet addr:192.168.1.202  Bcast:192.168.1.255  Mask:255.255.255.0

                inet6 addr: fe80::212:3fff:fe4e:caa0/64 Scope:Link

                UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

                RX packets:1755 errors:0 dropped:6 overruns:0 frame:0

                TX packets:1857 errors:0 dropped:0 overruns:0 carrier:0

                collisions:0 txqueuelen:1000

                RX bytes:185435 (181.0 KiB)  TX bytes:195883 (191.2 KiB)

                Interrupt:16

       

      eth0:1    Link encap:Ethernet  HWaddr 00:12:3F:4E:CA:A0

                inet addr:192.168.1.225  Bcast:192.168.1.255  Mask:255.255.255.0

                UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

                Interrupt:16

       

      eth1      Link encap:Ethernet  HWaddr 00:0F:B5:06:38:E9

                inet addr:192.168.2.202  Bcast:192.168.2.255  Mask:255.255.255.0

                inet6 addr: fe80::20f:b5ff:fe06:38e9/64 Scope:Link

                UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

                RX packets:81795 errors:0 dropped:6 overruns:0 frame:0

                TX packets:54169 errors:0 dropped:0 overruns:0 carrier:0

                collisions:0 txqueuelen:1000

                RX bytes:110063686 (104.9 MiB)  TX bytes:10799080 (10.2 MiB)

                Interrupt:17 Base address:0x2000

       

       

      I have no idea  where oracle is getting the 192.168.1.225  from!

       

      nmap -T4 -F 192.168.1.1/24

       

      Nmap scan report for openfiler_vip (192.168.1.225)

      Host is up (0.0017s latency).

      Not shown: 97 closed ports

      PORT    STATE SERVICE

      22/tcp  open  ssh

      111/tcp open  rpcbind

      873/tcp open  rsync

      MAC Address: 00:12:3F:4E:CA:A0 (Dell)

       

      opgx280.oracle.lab ~ # nslookup openfiler_vip

      Server:         192.168.1.205

      Address:        192.168.1.205#53

      ** server can't find openfiler_vip: NXDOMAIN

       

      Im really confused with this. My eth0:1  is broadcasting 192.168.1.225 how I can tell oracle about the new addresses??

       

      I notice it takes about 3-4 min for eth0:1 to show up in ifconfig, This seems to be something oracle is doing

      Needless to say the scan address is NOT working

       

      WTH!