RAC Attack - Oracle Cluster Database at Home/RAC Attack 12c/Linux Post Installation No Internet

Prev: Prepare Host

Install Linux (e)

Next: Create Cluster

To connect to the new created virtual machine, create a connection in Putty for the new VM called collabn1 with the IP Address of 192.168.78.51.

Optionally, create another connection for collabn2 with the IP Address of 192.168.78.52 that will be created later as a clone of collabn1.

Open the collabn1 connection by clicking Open.

Click Yes on the Security Alert dialog box.

Enter root at the login as: prompt and racattack at the password: prompt.

Turn off and disable the firewall IPTables.

[root@collabn1 ~]# service iptables stop
iptables: Flushing firewall rules:                         [  OK  ]
iptables: Setting chains to policy ACCEPT: filter          [  OK  ]
iptables: Unloading modules:                               [  OK  ]

[root@collabn1 ~]# chkconfig iptables off

[root@collabn1 ~]# chkconfig --list iptables
iptables        0:off   1:off   2:off   3:off   4:off   5:off   6:off

Disable SELinux. Open the config file and change the SELINUX variable from enforcing to disabled.

[root@collabn1 ~]# vim /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

Verify that all the network interfaces are up.

[root@collabn1 ~]# 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 08:00:27:4f:8a:0b 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 08:00:27:99:7e:95 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:e2:63:7f brd ff:ff:ff:ff:ff:ff

Add the DVD as repository.

Go to the VBOX menu => Storage => Add the DVD device to the server Device -> CD/DVD Devices -> Oracle_Linux_6_4.iso

Run the following commands:

mkdir /media/cdrom
mount /dev/cdrom /media/cdrom/
cd /etc/yum.repos.d
mkdir /tmp/old.yum.repos.d
mv * /tmp/old.yum.repos.d

cat <<EOF > ol64.repo
[OL64]
name=Oracle Linux 6.4 x86_64
baseurl=file:///media//cdrom
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY
gpgcheck=1
enabled=1
EOF

Install the database preinstall package oracle-rdbms-server-11gR2-preinstall.

This package installs all the package requirements for Oracle 11g (but will work also for 12c), configures kernel parameters, creates oracle user and groups and sets the user limits.

[root@collabn1 ~]# yum install -y oracle-rdbms-server-11gR2-preinstall
....
Transaction Summary
========================================================================
Install      21 Package(s)
Upgrade       2 Package(s)

Total download size: 43 M

....

Installed:
  oracle-rdbms-server-11gR2-preinstall.x86_64 0:1.0-8.el6

....

Complete!

Install additional RPMs that will be used to install and administer the servers.

[root@collabn1 ~]# rpm -ivh /media/cdrom/Packages/kernel-uek-devel-$(uname -r).rpm

[root@collabn1 ~]# yum install -y tigervnc-server.x86_64 xclock man parted.x86_64 unzip.x86_64 xterm lsof bind  xorg-x11-twm oracleasm-support
Install      12 Package(s)
.... 
Total download size: 22 M
....
Complete!

Uninstall NTP.

[root@collabn1 ~]# yum remove -y ntp .... Removed: ntp.x86_64 0:4.2.4p8-3.el6 .... Complete! [root@collabn1 ~]#

Unmount the DVD before continuing with the next steps.

[root@collabn1 ~]# umount /media/cdrom