How to Install Zimbra Patch on CentOS 7

Many have asked me, did Zimbra Collaboration (ZCS) 8.6.0 Patch4 will include Patch1 to Patch3? Actually, if you read the release notes document, the answer is there. ZCS patches are cumulative, meaning ZCS 8.6.0 Patch4 includes ZCS 8.6.0 Patch3, ZCS 8.6.0 Patch2 and ZCS 8.6.0 Patch1. These patch release notes provide information about the Zimbra Collaboration (ZCS) 8.6.0 Patch4, including the enhancements, bug fixes, security fixes, considerations, Known issues, preparation before installing the Patch, step to install the patch, example of the Patch script and revision history information. This step to install zimbra patch has been tested on RHEL6, CentOS6, Oracle Linux 6, RHEL7, CentOS7 and Oracle Linux 7.

In release notes document (preparation before patch), one of the steps we need to take into consideration is to perform a full backup before applied any patch. This is because there is no automatic roll-back if anything goes wrong. If your environment is currently using VMware Vsphere, you can do a virtual machine snapshot before start installing any patch.

How to Install Zimbra Patch4 CentOS / RHEL

1. Before begin, you should get ready the following:

a) Zimbra Collaboration 8.6.0 GA installed (Tested in RHEL6/CentOS6/OL6/RHEL7/CentOS7/OL7)

# zmcontrol -v
Release 8.6.0_GA_1153.RHEL6_64_20141215151155 RHEL6_64 FOSS edition.

b) Zimbra Collaboration 8.6.0 Patch4 TGZ file already downloaded.

2. Copy the patch.tgz file(s) to your server.

# ls | grep zcs-patch
zcs-patch-8.6.0_GA_1182.tgz

3. Install Zimbra Collaboration 8.6.0 Patch4
a. Log in as root and cd to the directory where the tar file is saved. Type :

# tar xzvf zcs-patch-8.6.0_GA_1182.tgz
# cd zcs-patch-8.6.0_GA_1182

b. Switch to user zimbra :

c. The ZCS mailbox service must be stopped to install the patch. Type the following command :

# zmmailboxdctl stop

d. As root, install the patch. Type

# ./installPatch.sh
..
..
..
Updating files for package zimbra-core
  /opt/zimbra/lib/jars/zimbraclient.jar... copied.
  /opt/zimbra/lib/jars/zimbrastore.jar... copied.
  /opt/zimbra/conf/timezones.ics... copied.
  /opt/zimbra/lib/jars/zimbracommon.jar... copied.
  /opt/zimbra/libexec/zmfixperms... copied.
  /opt/zimbra/bin/zmtrainsa... copied.
  /opt/zimbra/lib/jars/zimbrasoap.jar... copied.

e. Switch to user zimbra

# su – zimbra

f. ZCS must be restarted to changes to take effect.

# zmcontrol restart

I hope this article gives you some ideas and quick guide on how to install Zimbra Patch on RHEL6, CentOS6, Oracle Linux 6, RHEL7, CentOS7 and Oracle Linux 7.