3 Replies Latest reply: Sep 9, 2012 11:45 AM by OraDB RSS

    PRVF-5636 : The DNS response time for an unreachable node exceeded "15000"

    OraDB
      Friends,

      OS: OEL 6.3 64 bit
      DB: 11.2.0.3
      Environment: VirtualBox 4.1.20

      i have 3 nodes. one is for dns and other two for rac1 and rac2
      i have done all the preliminary steps. then i started
      [oracle@rac1 grid]$ ./runcluvfy.sh stage -pre crsinst -n rac1,rac2 -verbose
      and all are passed except the above subjected error.
      Checking DNS response time for an unreachable node
        Node Name                             Status                  
        ------------------------------------  ------------------------
        rac2                                  failed                  
        rac1                                  failed                  
      PRVF-5636 : The DNS response time for an unreachable node exceeded "15000" ms on following nodes: rac2
      
      File "/etc/resolv.conf" is not consistent across nodes
      ok....now to solve this error...i tried many options...but not able to succeed.

      Try 1:
      [root@mydns ~]# time nslookup rac1
      Server:         192.168.1.2
      Address:        192.168.1.2#53
      
      Name:   rac1.sathy.net
      Address: 192.168.1.3
      
      
      real    0m0.051s
      user    0m0.003s
      sys     0m0.011s
      [root@mydns ~]# 
      [oracle@rac1 grid]$ time nslookup mydns
      Server:         192.168.1.2
      Address:        192.168.1.2#53
      
      Name:   mydns.sathy.net
      Address: 192.168.1.2
      
      
      real    0m0.019s
      user    0m0.005s
      sys     0m0.008s
      [oracle@rac1 grid]$ 
      [root@rac2 ~]# time nslookup rac1
      Server:         192.168.1.2
      Address:        192.168.1.2#53
      
      Name:   rac1.sathy.net
      Address: 192.168.1.3
      
      
      real    0m0.019s
      user    0m0.008s
      sys     0m0.005s
      [root@rac2 ~]# 
      Try 2:
      [root@mydns ~]# nslookup sathy-scan
      Server:         192.168.1.2
      Address:        192.168.1.2#53
      
      Name:   sathy-scan.sathy.net
      Address: 192.168.1.8
      Name:   sathy-scan.sathy.net
      Address: 192.168.1.9
      Name:   sathy-scan.sathy.net
      Address: 192.168.1.7
      
      [root@mydns ~]# nslookup rac1
      Server:         192.168.1.2
      Address:        192.168.1.2#53
      
      Name:   rac1.sathy.net
      Address: 192.168.1.3
      
      [root@mydns ~]# nslookup rac2
      Server:         192.168.1.2
      Address:        192.168.1.2#53
      
      Name:   rac2.sathy.net
      Address: 192.168.1.5
      
      [root@mydns ~]# 
      [oracle@rac1 grid]$ nslookup sathy-scan
      Server:         192.168.1.2
      Address:        192.168.1.2#53
      
      Name:   sathy-scan.sathy.net
      Address: 192.168.1.9
      Name:   sathy-scan.sathy.net
      Address: 192.168.1.7
      Name:   sathy-scan.sathy.net
      Address: 192.168.1.8
      
      [oracle@rac1 grid]$ nslookup rac2
      Server:         192.168.1.2
      Address:        192.168.1.2#53
      
      Name:   rac2.sathy.net
      Address: 192.168.1.5
      
      [oracle@rac1 grid]$ nslookup rac1
      Server:         192.168.1.2
      Address:        192.168.1.2#53
      
      Name:   rac1.sathy.net
      Address: 192.168.1.3
      
      [oracle@rac1 grid]$ 
      [root@rac2 ~]# nslookup sathy-scan
      Server:         192.168.1.2
      Address:        192.168.1.2#53
      
      Name:   sathy-scan.sathy.net
      Address: 192.168.1.7
      Name:   sathy-scan.sathy.net
      Address: 192.168.1.8
      Name:   sathy-scan.sathy.net
      Address: 192.168.1.9
      
      [root@rac2 ~]# nslookup rac1
      Server:         192.168.1.2
      Address:        192.168.1.2#53
      
      Name:   rac1.sathy.net
      Address: 192.168.1.3
      
      [root@rac2 ~]# nslookup rac2
      Server:         192.168.1.2
      Address:        192.168.1.2#53
      
      Name:   rac2.sathy.net
      Address: 192.168.1.5
      
      [root@rac2 ~]# 
      Try 3:
      [root@mydns ~]# cat /etc/named.conf 
      // Default named.conf generated by install of bind-9.2.4-30.el4_7.2
      options {
              listen-on port 53 { any; };
              directory "/var/named";
              dump-file "/var/named/data/cache_dump.db";
              statistics-file "/var/named/data/named_stats.txt";
              forwarders { 192.168.1.1; };
      };
      include "/etc/rndc.key";
      
      zone "sathy.net" IN {
      type master;
      file "sathy.net.zone";
      allow-update { none; };
      };
      
      zone "1.168.192.in-addr.arpa." IN {
      type master;
      file "1.168.192.in-addr.arpa";
      allow-update { none; };
      };
      
      zone "." in {
      type hint;
      file "/dev/null";
      };
      [root@mydns ~]# 
      Try 4:
      [root@mydns ~]# cat /etc/selinux/config 
      
      # This file controls the state of SELinux on the system.
      # SELINUX= can take one of these three values:
      #     enforcing - SELinux security policy is enforced.
      #     permissive - SELinux prints warnings instead of enforcing.
      #     disabled - No SELinux policy is loaded.
      SELINUX=disabled
      # SELINUXTYPE= can take one of these two values:
      #     targeted - Targeted processes are protected,
      #     mls - Multi Level Security protection.
      #SELINUXTYPE=targeted 
      
      [root@mydns ~]# 
      [oracle@rac1 grid]$ cat /etc/selinux/config 
      
      # This file controls the state of SELinux on the system.
      # SELINUX= can take one of these three values:
      #     enforcing - SELinux security policy is enforced.
      #     permissive - SELinux prints warnings instead of enforcing.
      #     disabled - No SELinux policy is loaded.
      SELINUX=disabled
      # SELINUXTYPE= can take one of these two values:
      #     targeted - Targeted processes are protected,
      #     mls - Multi Level Security protection.
      #SELINUXTYPE=targeted 
      
      [oracle@rac1 grid]$ 
      [root@rac2 ~]# cat /etc/selinux/config 
      
      # This file controls the state of SELinux on the system.
      # SELINUX= can take one of these three values:
      #     enforcing - SELinux security policy is enforced.
      #     permissive - SELinux prints warnings instead of enforcing.
      #     disabled - No SELinux policy is loaded.
      SELINUX=disabled
      # SELINUXTYPE= can take one of these two values:
      #     targeted - Targeted processes are protected,
      #     mls - Multi Level Security protection.
      #SELINUXTYPE=targeted 
      
      [root@rac2 ~]# 
      what else i have to check to solve this error?
      for the past 2 days..i am trying to solve this error. may be somewhere a small mistake is happened from my side, but i am not able to find out.
      hope somebody will find out and help me.

      thanks
        • 1. Re: PRVF-5636 : The DNS response time for an unreachable node exceeded "15000"
          onedbguru
          did you make sure that "File "/etc/resolv.conf" is not consistent across nodes" was corrected?

          Make sure ALL PUBLIC and PRIVATE addresses are in the /etc/hosts file (except for SCAN as you can only have one entry per IP address). Also make sure that all of your ssh passwordless access can be accessed across all nodes for both the grid owner and the rdbms owner.
          • 2. Re: PRVF-5636 : The DNS response time for an unreachable node exceeded "15000"
            585179
            Hi,

            As far as I remember this error is just a warning so this can be ignored if you're doing testing environment. In the real world environment you would need to call Network Admin.


            Cheers
            • 3. Re: PRVF-5636 : The DNS response time for an unreachable node exceeded "15000"
              OraDB
              ok...here it is....
              [root@mydns ~]# cat /etc/resolv.conf 
              # Generated by NetworkManager
              search sathy.net
              nameserver 192.168.1.2
              [root@mydns ~]# 
              [root@rac1 ~]# cat /etc/resolv.conf 
              # Generated by NetworkManager
              search sathy.net
              nameserver 192.168.1.2
              [root@rac1 ~]# 
              [root@rac2 ~]# cat /etc/resolv.conf 
              # Generated by NetworkManager
              search sathy.net
              nameserver 192.168.1.2
              [root@rac2 ~]# 
              [root@mydns ~]# cat /etc/hosts
              #127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
              #::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
              127.0.0.1               localhost.localdomain localhost
              ::1            localhost6.localdomain6 localhost6
              
              # Public Network – (eth0)
              192.168.1.3     rac1.sathy.net    rac1
              192.168.1.5     rac2.sathy.net    rac2
              
              # Public Virtual IP (VIP) addresses – (eth0:1)
              192.168.1.4     rac1-vip.sathy.net rac1-vip
              192.168.1.6     rac2-vip.sathy.net rac2-vip
              
              # Private Interconnect – (eth1)
              
              192.168.2.3      rac1-priv.sathy.net       rac1-priv
              192.168.2.5      rac2-priv.sathy.net       rac2-priv
              
              #Compute Node Client Access SCAN Interface details
              #192.168.1.7   sathy-scan.sathy.net  sathy-scan
              #192.168.1.8   sathy-scan.sathy.net  sathy-scan
              #192.168.1.9   sathy-scan.sathy.net  sathy-scan
              [root@mydns ~]# 
              [root@rac1 ~]# cat /etc/hosts
              #127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
              #::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
              127.0.0.1               localhost.localdomain localhost
              ::1            localhost6.localdomain6 localhost6
              
              # Public Network – (eth0)
              192.168.1.3     rac1.sathy.net    rac1
              192.168.1.5     rac2.sathy.net    rac2
              
              # Public Virtual IP (VIP) addresses – (eth0:1)
              192.168.1.4     rac1-vip.sathy.net rac1-vip
              192.168.1.6     rac2-vip.sathy.net rac2-vip
              
              # Private Interconnect – (eth1)
              
              192.168.2.3      rac1-priv.sathy.net       rac1-priv
              192.168.2.5      rac2-priv.sathy.net       rac2-priv
              
              #Compute Node Client Access SCAN Interface details
              #192.168.1.7   sathy-scan.sathy.net  sathy-scan
              #192.168.1.8   sathy-scan.sathy.net  sathy-scan
              #192.168.1.9   sathy-scan.sathy.net  sathy-scan
              [root@rac1 ~]# 
              [root@rac2 ~]# cat /etc/hosts
              #127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
              #::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
              127.0.0.1               localhost.localdomain localhost
              ::1            localhost6.localdomain6 localhost6
              
              # Public Network – (eth0)
              192.168.1.3     rac1.sathy.net    rac1
              192.168.1.5     rac2.sathy.net    rac2
              
              # Public Virtual IP (VIP) addresses – (eth0:1)
              192.168.1.4     rac1-vip.sathy.net rac1-vip
              192.168.1.6     rac2-vip.sathy.net rac2-vip
              
              # Private Interconnect – (eth1)
              
              192.168.2.3      rac1-priv.sathy.net       rac1-priv
              192.168.2.5      rac2-priv.sathy.net       rac2-priv
              
              #Compute Node Client Access SCAN Interface details
              #192.168.1.7   sathy-scan.sathy.net  sathy-scan
              #192.168.1.8   sathy-scan.sathy.net  sathy-scan
              #192.168.1.9   sathy-scan.sathy.net  sathy-scan
              [root@rac2 ~]# 
              [oracle@rac1 ~]$ ssh rac2 date
              Sun Sep  9 22:04:45 IST 2012
              [oracle@rac1 ~]$ su - grid
              Password: 
              [grid@rac1 ~]$ ssh rac2 date
              Sun Sep  9 22:04:54 IST 2012
              [grid@rac1 ~]$ 
              [oracle@rac2 ~]$ ssh rac1 date
              Sun Sep  9 22:04:18 IST 2012
              [oracle@rac2 ~]$ su - grid
              Password: 
              [grid@rac2 ~]$ ssh rac1 date
              Sun Sep  9 22:04:31 IST 2012
              [grid@rac2 ~]$ 
              Now the error is ...
              PRVF-5637 : DNS response time could not be checked on following nodes: rac2,rac1
              what else?

              i wonder how it was successful in my previous installation which in oel 5.7....

              Edited by: OraDB on Sep 9, 2012 9:44 AM