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icingaweb2/doc/02-Installation.md

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Installation

The preferred way of installing Icinga Web 2 is to use the official package repositories depending on which operating system and distribution you are running.

Please follow the steps listed for your operating system. Packages for distributions other than the ones listed here may also be available. Please refer to icinga.com/get-started/download for a full list of available community repositories.

Browser Support

Icinga Web 2 and modules made by Icinga don't require a particular browser or set of browsers. The vendor of the browser in question doesn't matter much. However, the features a browser supports do.

This generally applies to CSS and Javascript features. Since there a plethora of features in each category which Icinga Web 2 and modules may require, we will only mention the most prominent feature or sub-category here:

If your desired browser and its version is showing up in green when visiting the respective link, it's probably okay to use it for Icinga Web 2.

Upgrade

In case you are upgrading from an older version of Icinga Web 2 please make sure to read the upgrading section thoroughly.

Installation Requirements

  • Icinga 2 and Icinga DB to monitor your infrastructure
  • A web server, e.g. Apache or Nginx
  • PHP version ≥ 7.2

Optional Requirements

  • 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.

Debian Repository 

apt-get update
apt-get -y install apt-transport-https wget gnupg

wget -O - https://packages.icinga.com/icinga.key | apt-key add -

DIST=$(awk -F"[)(]+" '/VERSION=/ {print $2}' /etc/os-release); \
 echo "deb https://packages.icinga.com/debian icinga-${DIST} main" > \
 /etc/apt/sources.list.d/${DIST}-icinga.list
 echo "deb-src https://packages.icinga.com/debian icinga-${DIST} main" >> \
 /etc/apt/sources.list.d/${DIST}-icinga.list

apt-get update

Ubuntu Repository 

apt-get update
apt-get -y install apt-transport-https wget gnupg

wget -O - https://packages.icinga.com/icinga.key | apt-key add -

. /etc/os-release; if [ ! -z ${UBUNTU_CODENAME+x} ]; then DIST="${UBUNTU_CODENAME}"; else DIST="$(lsb_release -c| awk '{print $2}')"; fi; \
 echo "deb https://packages.icinga.com/ubuntu icinga-${DIST} main" > \
 /etc/apt/sources.list.d/${DIST}-icinga.list
 echo "deb-src https://packages.icinga.com/ubuntu icinga-${DIST} main" >> \
 /etc/apt/sources.list.d/${DIST}-icinga.list

apt-get update

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

RHEL Repository

!!! info

A paid repository subscription is required for RHEL repositories. Get more information on
[icinga.com/subscription](https://icinga.com/subscription)

Don't forget to fill in the username and password section with your credentials in the local .repo file.

rpm --import https://packages.icinga.com/icinga.key
wget https://packages.icinga.com/subscription/rhel/ICINGA-release.repo -O /etc/yum.repos.d/ICINGA-release.repo

If you are using RHEL you need to additionally enable the optional and codeready-builder repository before installing the EPEL rpm package.

RHEL 8

ARCH=$( /bin/arch )

subscription-manager repos --enable rhel-8-server-optional-rpms
subscription-manager repos --enable "codeready-builder-for-rhel-8-${ARCH}-rpms"

dnf install https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm

RHEL 7

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.

subscription-manager repos --enable rhel-7-server-optional-rpms
subscription-manager repos --enable rhel-server-rhscl-7-rpms

yum install https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm

SLES Repository

!!! info

A paid repository subscription is required for RHEL repositories. Get more information on
[icinga.com/subscription](https://icinga.com/subscription)

Don't forget to fill in the username and password section with your credentials in the local .repo file.

rpm --import https://packages.icinga.com/icinga.key

zypper ar https://packages.icinga.com/subscription/sles/ICINGA-release.repo
zypper ref

You need to additionally enable a couple of SLES repositories to fulfill dependencies:

source /etc/os-release

SUSEConnect -p sle-module-desktop-applications/$VERSION_ID/x86_64
SUSEConnect -p sle-module-development-tools/$VERSION_ID/x86_64
SUSEConnect -p sle-module-web-scripting/$VERSION_ID/x86_64
SUSEConnect -p PackageHub/$VERSION_ID/x86_64

Amazon Linux 2 Repository

!!! info

A paid repository subscription is required for Amazon Linux repositories. Get more information on
[icinga.com/subscription](https://icinga.com/subscription)

Don't forget to fill in the username and password section with your credentials in the local .repo file.

rpm --import https://packages.icinga.com/icinga.key
wget https://packages.icinga.com/subscription/amazon/ICINGA-release.repo -O /etc/yum.repos.d/ICINGA-release.repo

You need to install and enable the amazon-linux-extras repository to meet the requirements of Icinga Web 2 on Amazon Linux 2:

yum install -y amazon-linux-extras

amazon-linux-extras enable php8.0

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.

Debian

apt-get install icingaweb2 icingacli

Ubuntu

apt-get install icingaweb2 libapache2-mod-php icingacli

The additional package libapache2-mod-php is necessary on Ubuntu to automatically install a web server and PHP and make Icinga Web 2 work out-of-the-box.

!!! tip

If you have [SELinux](90-SELinux.md) enabled, the package `icingaweb2-selinux` is also required.

CentOS

yum install icingaweb2 icingacli

RHEL

RHEL 8

dnf install icingaweb2 icingacli

RHEL 7

yum install icingaweb2 icingacli

SLES

zypper install icingaweb2 icingacli

Amazon Linux 2

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:

icingacli setup token create

In case you do not remember the token you can show it using the icingacli:

icingacli setup token show

You need to manually create a database and a database user prior to starting the web wizard. This is due to local security restrictions whereas the web wizard cannot create a database/user through a local unix domain socket.

MariaDB [mysql]> CREATE DATABASE icingaweb2;

MariaDB [mysql]> GRANT ALL ON icingaweb2.* TO icingaweb2@localhost IDENTIFIED BY 'CHANGEME';

You may also create a separate administrative account with all privileges instead.

!!! note

This is only required if you are using a local database as authentication type.

Start Web Setup

Finally visit Icinga Web 2 in your browser to access the setup wizard and complete the installation: /icingaweb2/setup.

!!! hint

Use the same database, user and password details created above when asked.

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're using php-fpm on SLES 15 SP2 onwards, `/etc/icingaweb2` may not be writable.
That's because the default systemd unit file for php-fpm has `ProtectSystem=full`
enabled. You want to lookup/add the systemd setting `ReadWritePaths=` in this case and
add `/etc/icingaweb2` to it. Alternatively you can also define a different configuration
directory using the environment variable `ICINGAWEB_CONFIGDIR`.

!!! note

If you have SELinux enabled, please ensure to either have the selinux package for Icinga Web 2 installed, or disable it.

Installing Icinga Web 2 from Source

Although the preferred way of installing Icinga Web 2 is to use packages, it is also possible to install Icinga Web 2 directly from source.

Getting the Source

First of all, you need to download the sources.

Git clone:

cd /usr/share/
git clone https://github.com/Icinga/icingaweb2.git icingaweb2

Tarball download (latest release):

cd /usr/share
wget https://github.com/Icinga/icingaweb2/archive/v2.9.5.zip
unzip v2.9.5.zip
mv icingaweb2-2.9.5 icingaweb2

Installing Requirements from Source

You will need to install certain dependencies depending on your setup:

  • Icinga 2 and Icinga DB to monitor your infrastructure
  • A web server, e.g. Apache or Nginx
  • PHP version ≥ 7.2
  • Icinga PHP Library (ipl) (≥ 0.13)
  • Icinga PHP Thirdparty (≥ 0.12)
  • The following PHP modules must be installed: cURL, json, gettext, fileinfo, intl, dom, OpenSSL and xml
  • The pdfexport module (≥0.10) is required for the export to PDF
  • LDAP PHP library when using Active Directory or LDAP for authentication
  • MySQL or PostgreSQL PHP libraries

The following example installs Apache2 as web server, MySQL as RDBMS and uses the PHP adapter for MySQL. Adopt the package requirements to your needs (e.g. adding ldap for authentication) and distribution.

Example for RHEL/CentOS/Fedora:

yum install httpd mysql-server
yum install php php-gd php-intl

The setup wizard will check the pre-requisites later on.

Installing Icinga Web 2

Choose a target directory and move Icinga Web 2 there.

mv icingaweb2 /usr/share/icingaweb2

Configuring the Web Server

Use icingacli to generate web server configuration for either Apache or nginx.

Apache:

./bin/icingacli setup config webserver apache --document-root /usr/share/icingaweb2/public

nginx:

./bin/icingacli setup config webserver nginx --document-root /usr/share/icingaweb2/public

Save the output as new file in your webserver's configuration directory.

Example for Apache on RHEL or CentOS:

./bin/icingacli setup config webserver apache --document-root /usr/share/icingaweb2/public > /etc/httpd/conf.d/icingaweb2.conf

Example for Apache on SUSE:

./bin/icingacli setup config webserver apache --document-root /usr/share/icingaweb2/public > /etc/apache2/conf.d/icingaweb2.conf

Example for Apache on Debian Jessie:

./bin/icingacli setup config webserver apache --document-root /usr/share/icingaweb2/public > /etc/apache2/conf-available/icingaweb2.conf
a2enconf icingaweb2

Example for Apache on Alpine Linux:

icingacli setup config webserver apache --document-root /usr/share/webapps/icingaweb2/public > /etc/apache2/conf.d/icingaweb2.conf

Preparing Icinga Web 2 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. Please follow the steps listed below for preparing the web setup.

Because both web and CLI must have access to configuration and logs, permissions will be managed using a special system group. The web server user and CLI user have to be added to this system group.

Add the system group icingaweb2 in the first place.

Fedora, RHEL, CentOS, SLES and OpenSUSE:

groupadd -r icingaweb2

Debian and Ubuntu:

addgroup --system icingaweb2

Add your web server's user to the system group icingaweb2 and restart the web server:

Fedora, RHEL and CentOS:

usermod -a -G icingaweb2 apache
service httpd restart

SLES and OpenSUSE:

usermod -A icingaweb2 wwwrun
service apache2 restart

Debian and Ubuntu:

usermod -a -G icingaweb2 www-data
service apache2 restart

Alpine Linux:

gpasswd -a apache icingaweb2
rc-service apache2 restart

Use icingacli to create the configuration directory which defaults to /etc/icingaweb2:

./bin/icingacli setup config directory

When using the web setup you are required to authenticate using a token. In order to generate a token use the icingacli:

./bin/icingacli setup token create

In case you do not remember the token you can show it using the icingacli:

./bin/icingacli setup token show

Icinga Web 2 Setup Wizard

Finally visit Icinga Web 2 in your browser to access the setup wizard and complete the installation: /icingaweb2/setup.

Paste the previously generated token and follow the steps on-screen. Then you are done here.

If you prefer to set up the configuration manually, follow the Icinga Web 2 Manual Configuration instructions