Last modified on 5 April 2013, at 05:10

RAC Attack - Oracle Cluster Database at Home/Configure Node 1


After completing the previous lab, you should already be logged in as the oracle user on collabn1. You should already have a terminal open, where you are currently switched to the root user.



  1. As the root user, CONFIRM that the IP address if eth0 starts with 192.168.78 and that the IP address of eth1 starts with 172.16.100.

    [root@collabn1 ~]# ifconfig|grep net
     eth0      Link encap:Ethernet  HWaddr 00:0C:29:07:F5:C0
              inet addr:192.168.78.128  Bcast:192.168.78.255  Mask:255.255.255.0
              inet6 addr: fe80::20c:29ff:fe07:f5c0/64 Scope:Link
     eth1      Link encap:Ethernet  HWaddr 00:0C:29:07:F5:CA
              inet addr:172.16.100.128  Bcast:172.16.100.255  Mask:255.255.255.0
              inet6 addr: fe80::20c:29ff:fe07:f5ca/64 Scope:Link
              inet addr:127.0.0.1  Mask:255.0.0.0
              inet6 addr: ::1/128 Scope:Host
    
  2. Update the IP addresses by directly editing the linux network configuration files. Update the BOOTPROTO line and add the remaining lines.

    [root@collabn1 ~]# cd /etc/sysconfig/network-scripts
    [root@collabn1 network-scripts]# gedit ifcfg-eth0
    BOOTPROTO=none
    IPADDR=192.168.78.51
    NETMASK=255.255.255.0
    GATEWAY=192.168.78.2
    [root@collabn1 network-scripts]# gedit ifcfg-eth1
    BOOTPROTO=none
    IPADDR=172.16.100.51
    NETMASK=255.255.255.0
    
  3. Update the DNS search domain

    [root@collabn1 network-scripts]# gedit /etc/resolv.conf
    search vm.ardentperf.com
    nameserver 192.168.78.2
    
  4. As root, restart the network services by typing service network restart. Then confirm the new ip addresses with ifconfig. Also confirm the search domain by inspecting /etc/resolv.conf – if the file has reverted then edit it again. (When I wrote this lab, the change stuck after the second time I edited the file.)


    RA-oel-network-restart.png
  5. Edit /etc/ hosts. EDIT the line with 127.0.0.1 and then ADD all of the other lines below:

    [root@collabn1 etc]# vi /etc/hosts
    192.168.78.51   collabn1 collabn1.vm.ardentperf.com
    192.168.78.61   collabn1-vip collabn1-vip.vm.ardentperf.com
    172.16.100.51   collabn1-priv collabn1-priv.vm.ardentperf.com
    192.168.78.52   collabn2 collabn2.vm.ardentperf.com
    192.168.78.62   collabn2-vip collabn2-vip.vm.ardentperf.com
    172.16.100.52   collabn2-priv collabn2-priv.vm.ardentperf.com
    192.168.78.250  collab-scan collab-scan.vm.ardentperf.com
    192.168.78.251  collab-gns collab-gns.vm.ardentperf.com
    ::1             localhost6.localdomain6 localhost6
    127.0.0.1       localhost.localdomain localhost