Install Icinga Web 2 on CentOS¶
Installation Requirements ¶
- Icinga 2 with the IDO database backend (MySQL or PostgreSQL)
- A web server, e.g. Apache or Nginx
- PHP version >= 7.3
- Older versions (5.6+) are only supported up until Icinga Web v2.11
Optional Requirements¶
- For exports to PDF also the following PHP modules are required: mbstring, GD, Imagick
- LDAP PHP library when using Active Directory or LDAP for authentication
Add Icinga Package Repository ¶
You need to add the Icinga repository to your package management configuration for installing Icinga Web 2. If you’ve already configured your OS to use the Icinga repository for installing Icinga 2, you may skip this step.
CentOS Repository ¶
rpm --import https://packages.icinga.com/icinga.key
wget https://packages.icinga.com/centos/ICINGA-release.repo -O /etc/yum.repos.d/ICINGA-release.repo
The packages for CentOS depend on other packages which are distributed as part of the EPEL repository.
CentOS 7:
yum install epel-release
Since Icinga Web v2.5 we also require a newer PHP version than what is available in RedHat itself. You need to enable the SCL repository, so that the dependencies can pull in the newer PHP.
yum install centos-release-scl
Install Icinga Web 2 ¶
You can install Icinga Web 2 by using your distribution’s package manager to install the icingaweb2
package.
The additional package icingacli
is necessary to follow further steps in this guide.
Tip
If you have SELinux enabled, the package icingaweb2-selinux
is also required.
dnf install icingaweb2 icingacli
Install the Web Server ¶
Make sure you have a web server with PHP up and running before moving on. Please refer to the installation requirements for details about supported versions. Depending on your OS you might have to install, and configure the web server separately.
Prepare Web Setup ¶
You can set up Icinga Web 2 quickly and easily with the Icinga Web 2 setup wizard which is available the first time
you visit Icinga Web 2 in your browser. When using the web setup you are required to authenticate using a token.
In order to generate a token use the icingacli
:
icingacli setup token create
In case you do not remember the token you can show it using the icingacli
:
icingacli setup token show
Start Web Setup ¶
Finally visit Icinga Web 2 in your browser to access the setup wizard and complete the installation:
/icingaweb2/setup
.
The setup wizard automatically detects the required packages. In case one of them is missing, e.g. a PHP module, please install the package, restart your webserver and reload the setup page.
Note
If you have SELinux enabled, please ensure to either have the selinux package for Icinga Web 2 installed, or disable it.