1 Red Hat Enterprise Linux

Overview

This section provides the steps required for a successful upgrade from Zabbix 6.2.x to the latest version of Zabbix 6.4.x using official Zabbix packages for Red Hat Enterprise Linux.

Before the upgrade make sure to read the relevant upgrade notes!

You may also want to check the requirements for 6.4.

It may be handy to run two parallel SSH sessions during the upgrade, executing the upgrade steps in one and monitoring the server/proxy logs in another. For example, run tail -f zabbix_server.log or tail -f zabbix_proxy.log in the second SSH session showing you the latest log file entries and possible errors in real time. This can be critical for production instances.

For instructions on upgrading between Zabbix 6.4.x minor versions (for example, from 6.4.1 to 6.4.3), see Upgrade between minor versions.

Upgrade procedure

1 Stop Zabbix processes

Stop Zabbix server to make sure that no new data is inserted into database.

# systemctl stop zabbix-server

If upgrading Zabbix proxy, agent, or agent 2, stop these components too:

# systemctl stop zabbix-proxy
# systemctl stop zabbix-agent
# systemctl stop zabbix-agent2
2 Back up the existing Zabbix database

This is a very important step. Make sure that you have a backup of your database. It will help if the upgrade procedure fails (lack of disk space, power off, any unexpected problem).

3 Back up configuration files, PHP files and Zabbix binaries

Make a backup copy of Zabbix binaries, configuration files and the PHP file directory.

Configuration files:

# mkdir /opt/zabbix-backup/
# cp /etc/zabbix/zabbix_server.conf /opt/zabbix-backup/
# cp /etc/httpd/conf.d/zabbix.conf  /opt/zabbix-backup/

PHP files and Zabbix binaries:

# cp -R /usr/share/zabbix/ /opt/zabbix-backup/
# cp -R /usr/share/zabbix-* /opt/zabbix-backup/
4 Update repository configuration package

Before proceeding with the upgrade, update your current repository package to the latest version to ensure compatibility with the newest packages and to include any recent security patches or bug fixes.

On RHEL 9, run:

# rpm -Uvh https://repo.zabbix.com/zabbix/6.4/rhel/9/x86_64/zabbix-release-latest.el9.noarch.rpm

On RHEL 8, run:

# rpm -Uvh https://repo.zabbix.com/zabbix/6.4/rhel/8/x86_64/zabbix-release-latest.el8.noarch.rpm

For older RHEL versions, replace the link above with the correct one from Zabbix repository. Note, however, that packages for those versions may not include all Zabbix components. For a list of components included, see Zabbix packages.

Then, clean up the dnf package manager's cache (including headers, metadata, and package files downloaded during previous installations or updates):

# dnf clean all

On the next dnf operation, dnf will download fresh metadata from the repositories since the old metadata is cleared.

See also: Known issues for updating the repository configuration package on RHEL.

5 Upgrade Zabbix components

To upgrade Zabbix components you may run something like:

# dnf install zabbix-server-mysql zabbix-web-mysql zabbix-agent
  • If using PostgreSQL, substitute mysql with pgsql in the command.
  • If upgrading the proxy, substitute server with proxy in the command.
  • If upgrading the agent 2, substitute zabbix-agent with zabbix-agent2 zabbix-agent2-plugin-* in the command.

Upgrading Zabbix agent 2 with the dnf install zabbix-agent2 command could lead to an error. For more information, see Known issues.

Then, to upgrade the web frontend with Apache and restart Apache, run:

# dnf install zabbix-apache-conf
# systemctl restart httpd
6 Review component configuration parameters

Make sure to review Upgrade notes to check if any changes in the configuration parameters are required.

For new optional parameters, see the What's new page.

7 Start Zabbix processes

Start the updated Zabbix components.

# systemctl start zabbix-server
# systemctl start zabbix-proxy
# systemctl start zabbix-agent
# systemctl start zabbix-agent2
8 Clear web browser cookies and cache

After the upgrade you may need to clear web browser cookies and web browser cache for the Zabbix web interface to work properly.

Upgrade between minor versions

It is possible to upgrade between Zabbix 6.4.x minor versions (for example, from 6.4.1 to 6.4.3).

To upgrade Zabbix minor version, please run:

# dnf upgrade 'zabbix-*'

To upgrade Zabbix server minor version only, please run:

# dnf upgrade 'zabbix-server-*'

To upgrade Zabbix agent minor version only, please run:

# dnf upgrade 'zabbix-agent-*'

or, for Zabbix agent 2:

# dnf upgrade 'zabbix-agent2-*'