Jephe Wu - http://linuxtechres.blogspot.com
Objective: step-by-step to install a RHEL 6.4/6.5 64bit server VM on ESXi 5 for preparing Oracle database installation
Environment: ESXi 5, vsphere client, RHEL 6.4 64bit, Oracle 11gR2 database single instance installation
Steps
1. Information
hostname: oradb1
ip: 192.168.1.2/24
virtual disk size: 80g
vcpu: 2
RAM: 4G
partition: / - 20g , swap - 4g, /boot - 500M, /u01 - the rest
use LVM for everything except for /boot.
2. Installation
download RHEL 6.4/6.5 x86_64bit DVD, upload to ESXi datastore through Vsphere.
create a new VM with the datastore, choose this uploaded iso file and connect it and power it on so it will boot from dvd for OS installation
3. Package selection
Just choose 'Base' which is default option to install it, also tick ' Compatibility libraries'.
4. Configuration after OS installation
a. disable selinux , vi /etc/sysconfig/selinux
b. ntsysv --level 2345 to disable unnecessary services
c. vi /etc/sysconfig/network-scripts/ifcfg-eth0, change onboot=yes if required.
d. run 'setup' to setup network eth0 if required.
4. setup yum repo for dvd media
Later on, you need to manually install quite a lot of rpms, in order to auto resolve the dependency, you can setup a yum repo based on dvd itself
cd /etc/yum.repos.d
cp rhel-source.repo rhel64.repo -va
vi rhel64.repo as follows:
[oracle@oradb1 yum.repos.d]$ more rhel64.repo
[rhel64]
name=Red Hat Enterprise Linux $releasever - $basearch - Source
baseurl=file:///media/
enabled=1
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release
From ESxi VM, hardware, for cdrom/dvd, tick 'connected' and 'connect at poweron' to connect dvd, then mount it as follows:
mount /dev/dvd /media
5. Preparing package for Oracle database
Requirements for Installing Oracle 11gR2 RDBMS on RHEL6 or OL6 64-bit (x86-64) (Doc ID 1441282.1) , the following packages are required.
groupadd -g 501 oinstall groupadd -g 502 dba groupadd -g 503 oper useradd -m -u 501 -g oinstall -G dba,oper -d /home/oracle -s /bin/bash -c "Oracle Software Owner" oracle mkdir -p /u01/app/oracle chown -R oracle:oinstall /u01/app chmod -R 775 /u01/app |
8. sysctl.conf
kernel.sem = 250 32000 100 128
fs.file-max = 6815744
fs.aio-max-nr = 1048576
net.ipv4.ip_local_port_range = 9000 65500
net.core.rmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576
a.) Add the following settings to /etc/security/limits.conf
oracle hard nproc 16384
oracle soft nofile 1024
oracle hard nofile 65536
oracle soft stack 10240
Note: not required for RHEL 6.4 as it's already put in system-auth, refer to the reference part at the bottom of this page for RHEL6 best practice for Oracle 11g R2 database
c.) Verify the current ulimits, and raise if needed. This can be done many ways...adding the following lines to /etc/profile is the recommended method:
if [ $SHELL = "/bin/ksh" ]; then
ulimit -u 16384
ulimit -n 65536
else
ulimit -u 16384 -n 65536
fi
fi
sed -i 's/CV_ASSUME_DISTID=OEL4/CV_ASSUME_DISTID=OEL6/'
/u01/app/oracle/oracle-software/database/stage/cvu/cv/admin/cvu_config
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