Specifications

Installing on RHEL or CentOS

1. Determine whether other Java pacakges are installed.

rpm -qa | egrep -i '(jdk|jre|java)'

If necessary, remove the other packages.

yum -y remove $(rpm -qa | egrep -i '(jdk|jre|java)')

2. Download the self-installing binary of Oracle Java SE Runtime Environment 6u45 from the Java SE 6 Downloads

page. The file to download is jre-6u45-linux-x64-rpm.bin.

3. Add execute permission to the self-installing binary.

chmod +x ./jre-6u45-linux-x64-rpm.bin

4. Install the Oracle JRE.

./jre-6u45-linux-x64-rpm.bin

5. Add the JAVA_HOME environment variable to /etc/profile.

echo "export JAVA_HOME=/usr/java/default" >> /etc/profile

6. Verify the correct version is installed.

java -version

The preceding command should return the following output.

java version "1.6.0_45"

Java(TM) SE Runtime Environment (build 1.6.0_45-b06)

Java HotSpot(TM) 64-Bit Server VM (build 20.45-b01, mixed mode)

2.7. Disable SE Linux

Zenoss Core is not compatible with Security-Enhanced Linux (SELinux) in enforcing mode. Follow these steps to

disable enforcing mode on the Zenoss Core host.

1. Log in as root, or as a user with superuser privileges.

2. Disable enforcing mode temporarily (avoiding the need to reboot) with the following command:

/bin/echo 0 > /selinux/enforce

3. Disable enforcing mode permanently by editing the /etc/selinux/config file with the following command:

/bin/sed -i.bak -e 's/^SELINUX=.*/SELINUX=disabled/g' /etc/selinux/config

For more information about SELinux, see http://en.wikipedia.org/wiki/SELinux, or the SELinux home page at http://

www.nsa.gov/research/selinux/index.shtml.

2.8. Install the Zenoss Dependencies Repository

Install the Zenoss dependencies repository:

RHEL/CentOS 5: rpm -Uvh http://deps.zenoss.com/yum/zenossdeps-4.2.x-1.el5.noarch.rpm

RHEL/CentOS 6: rpm -Uvh http://deps.zenoss.com/yum/zenossdeps-4.2.x-1.el6.noarch.rpm

2.9. Install and Configure MySQL Community Server

You can install MySQL Community Server and Zenoss Core on the same host or you can install them on separate hosts.