Install Icinga Web 2 on CentOS¶
Installation Requirements ¶
- Icinga 2 and Icinga DB to monitor your infrastructure
- A web server, e.g. Apache or Nginx
- PHP version ≥ 7.2
- The pdfexport module (≥0.10) is required for the export to PDF
- 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.
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
The additional package
icingacli is necessary to follow further steps in this guide.
If you have SELinux enabled, the package
icingaweb2-selinux is also required.
yum install icingaweb2 icingacli
Install the Web Server ¶
Ensure that you have a web server with PHP installed before proceeding, such as Apache or Nginx with PHP version ≥ 7.2. Depending on your operating system, you may need to install and configure the web server separately. An Apache configuration file to serve Icinga Web is already installed. If you want to use Nginx, you must manually create a configuration file using the following command. Save the output as a new file in the web server configuration directory:
icingacli setup config webserver nginx --document-root /usr/share/icingaweb2/public
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 setup token create
In case you do not remember the token you can show it using the
icingacli setup token show
Start Web Setup ¶
Finally visit Icinga Web 2 in your browser to access the setup wizard and complete the installation:
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.
If you have SELinux enabled, please ensure to either have the selinux package for Icinga Web 2 installed, or disable it.