RAC Attack - Oracle Cluster Database at Home/RAC Attack 12c/Configure Second Linux VM

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  1. The network won't be available yet because we reinitialized the network adapters so the following changes will need to be done in the VM. Log in as root/racattack. Type the command system-config-network. Device configuration is already highlighted. Press Enter.

    RA-Oracle_Linux_6_64bit-Configure_OS-post clone network change

  2. eth0 (eth0) - Ethernet is already highlighted. Press Enter.

    RA-Oracle_Linux_6_64bit-Configure_OS-post clone network save devices

  3. Go down to the Static IP line. Change the IP to 192.168.78.52. Go down to Ok and press Enter.

    RA-Oracle_Linux_6_64bit-Configure_OS-post clone network eth0

  4. Select eth1 (eth1) - Ethernet and press Enter. Go down to the Static IP line. Change the IP to 172.16.100.52. Go down to Ok and press Enter.

    RA-Oracle_Linux_6_64bit-Configure_OS-post clone network eth1

  5. Tab down to Save and press Enter.

    RA-Oracle_Linux_6_64bit-Configure_OS-post clone network save devices

  6. Arrow down to DNS configuration and press Enter.

    RA-Oracle_Linux_6_64bit-Configure_OS-post clone DNS configuration

  7. In the Hostname field, change to collabn2.racattack. Tab down to Ok and press Enter.

    RA-Oracle_Linux_6_64bit-Configure_OS-post clone network dns change

  8. Tab down to Save&Quit and press Enter.

    RA-Oracle_Linux_6_64bit-Configure_OS-post clone network save quit

  9. Check that the parameter PEERDNS is set to no in /etc/sysconfig/network-scripts/ifcfg-eth2 to prevent the resolv.conf from being overwritten by the dhcp client:
    DEVICE=eth2
    TYPE=Ethernet
    UUID=xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxx
    ONBOOT=yes
    NM_CONTROLLED=yes
    BOOTPROTO=dhcp
    HWADDR=xx:xx:xx:xx:xx
    DEFROUTE=yes
    PEERDNS=no
    PEERROUTES=yes
    IPV4_FAILURE_FATAL=yes
    IPV6INIT=no
    NAME="System eth2"
    USERCTL=no
    
  10. Remove the udev network rules file. It will be regenerated on the next reboot with the new MAC addresses.
    [root@collabn2 ~]# rm -f /etc/udev/rules.d/70-persistent-net.rules
    
  11. Remove the HWADDR and UUID lines in the network adapter configuration files.


    [root@collabn2 ~]# sed -i -e '/HWADDR/d' -e '/UUID/d' /etc/sysconfig/network-scripts/ifcfg-eth[0-2]
    
  12. Reboot the collabn2 VM by typing reboot.

    Start the collabn1 VM as well and start Putty sessions for both.

    RA-Oracle_Linux_6_64bit-Configure_OS-collabn1 reboot

  13. Verify that all the network interfaces are up.
    [root@collabn2 ~]# ip l
    1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
       link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
       link/ether 08:00:27:c9:39:d3 brd ff:ff:ff:ff:ff:ff
    3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
       link/ether 08:00:27:33:bd:a8 brd ff:ff:ff:ff:ff:ff
    4: eth2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
       link/ether 08:00:27:5f:61:29 brd ff:ff:ff:ff:ff:ff
    
  14. Verify that all the ASM devices are visible.
    [root@collabn2 ~]# ls -l /dev/asm*
    brw-rw----. 1 oracle dba 8, 17 Aug  5 15:40 /dev/asm-disk1
    brw-rw----. 1 oracle dba 8, 33 Aug  5 15:40 /dev/asm-disk2
    brw-rw----. 1 oracle dba 8, 49 Aug  5 15:40 /dev/asm-disk3
    brw-rw----. 1 oracle dba 8, 65 Aug  5 15:40 /dev/asm-disk4