# Getting Started This tutorial is a step-by-step introduction to installing Icinga 2 and Icinga Web 2. It assumes that you are familiar with the operating system you're using to install Icinga 2. ## Setting up Icinga 2 First off you will have to install Icinga 2. The preferred way of doing this is to use the official package repositories depending on which operating system and distribution you are running. Distribution | Repository ------------------------|--------------------------- Debian | [debmon](http://debmon.org/packages/debmon-wheezy/icinga2), [Icinga Repository](http://packages.icinga.org/debian/) Ubuntu | [Icinga PPA](https://launchpad.net/~formorer/+archive/ubuntu/icinga), [Icinga Repository](http://packages.icinga.org/ubuntu/) RHEL/CentOS | [Icinga Repository](http://packages.icinga.org/epel/) openSUSE | [Icinga Repository](http://packages.icinga.org/openSUSE/), [Server Monitoring Repository](https://build.opensuse.org/package/show/server:monitoring/icinga2) SLES | [Icinga Repository](http://packages.icinga.org/SUSE/) Gentoo | [Upstream](http://packages.gentoo.org/package/net-analyzer/icinga2) FreeBSD | [Upstream](http://www.freshports.org/net-mgmt/icinga2) ArchLinux | [Upstream](https://aur.archlinux.org/packages/icinga2) Packages for distributions other than the ones listed above may also be available. Please contact your distribution packagers. ### Package Repositories You need to add the Icinga repository to your package management configuration. Below is a list with examples for the various distributions. Debian (debmon): # wget -O - http://debmon.org/debmon/repo.key 2>/dev/null | apt-key add - # echo 'deb http://debmon.org/debmon debmon-wheezy main' >/etc/apt/sources.list.d/debmon.list # apt-get update Ubuntu (PPA): # add-apt-repository ppa:formorer/icinga # apt-get update RHEL/CentOS: # rpm --import http://packages.icinga.org/icinga.key # curl -o /etc/yum.repos.d/ICINGA-release.repo http://packages.icinga.org/epel/ICINGA-release.repo # yum makecache Fedora: # rpm --import http://packages.icinga.org/icinga.key # curl -o /etc/yum.repos.d/ICINGA-release.repo http://packages.icinga.org/fedora/ICINGA-release.repo # yum makecache SLES 11: # zypper ar http://packages.icinga.org/SUSE/ICINGA-release-11.repo # zypper ref SLES 12: # zypper ar http://packages.icinga.org/SUSE/ICINGA-release.repo # zypper ref openSUSE: # zypper ar http://packages.icinga.org/openSUSE/ICINGA-release.repo # zypper ref The packages for RHEL/CentOS depend on other packages which are distributed as part of the [EPEL repository](http://fedoraproject.org/wiki/EPEL). Please make sure to enable this repository by following [these instructions](http://fedoraproject.org/wiki/EPEL#How_can_I_use_these_extra_packages.3F). ### Installing Icinga 2 You can install Icinga 2 by using your distribution's package manager to install the `icinga2` package. Debian/Ubuntu: # apt-get install icinga2 RHEL/CentOS 5/6: # yum install icinga2 # chkconfig icinga2 on # service icinga2 start RHEL/CentOS 7 and Fedora: # yum install icinga2 # systemctl enable icinga2 # systemctl start icinga2 SLES/openSUSE: # zypper install icinga2 ### Enabled Features during Installation The default installation will enable three features required for a basic Icinga 2 installation: * `checker` for executing checks * `notification` for sending notifications * `mainlog` for writing the `icinga2.log` file You can verify that by calling `icinga2 feature list` [CLI command](8-cli-commands.md#cli-command-feature) to see which features are enabled and disabled. # icinga2 feature list Disabled features: api command compatlog debuglog graphite icingastatus ido-mysql ido-pgsql livestatus notification perfdata statusdata syslog Enabled features: checker mainlog notification ### Installation Paths By default Icinga 2 uses the following files and directories: Path | Description ------------------------------------|------------------------------------ /etc/icinga2 | Contains Icinga 2 configuration files. /etc/init.d/icinga2 | The Icinga 2 init script. /usr/sbin/icinga2 | The Icinga 2 binary. /usr/share/doc/icinga2 | Documentation files that come with Icinga 2. /usr/share/icinga2/include | The Icinga Template Library and plugin command configuration. /var/run/icinga2 | PID file. /var/run/icinga2/cmd | Command pipe and Livestatus socket. /var/cache/icinga2 | status.dat/objects.cache, icinga2.debug files /var/spool/icinga2 | Used for performance data spool files. /var/lib/icinga2 | Icinga 2 state file, cluster log, local CA and configuration files. /var/log/icinga2 | Log file location and compat/ directory for the CompatLogger feature. ## Setting up Check Plugins Without plugins Icinga 2 does not know how to check external services. The [Monitoring Plugins Project](https://www.monitoring-plugins.org/) provides an extensive set of plugins which can be used with Icinga 2 to check whether services are working properly. The recommended way of installing these standard plugins is to use your distribution's package manager. For your convenience here is a list of package names for some of the more popular operating systems/distributions: OS/Distribution | Package Name | Installation Path -----------------------|--------------------|--------------------------- RHEL/CentOS (EPEL) | nagios-plugins-all | /usr/lib/nagios/plugins or /usr/lib64/nagios/plugins Debian | nagios-plugins | /usr/lib/nagios/plugins FreeBSD | nagios-plugins | /usr/local/libexec/nagios OS X (MacPorts) | nagios-plugins | /opt/local/libexec Depending on which directory your plugins are installed into you may need to update the global `PluginDir` constant in your [Icinga 2 configuration](4-configuring-icinga-2.md#constants-conf). This constant is used by the check command definitions contained in the Icinga Template Library to determine where to find the plugin binaries. Please refer to the [plugins](13-addons-plugins.md#plugins) chapter for details about how to integrate additional check plugins into your Icinga 2 setup. ## Running Icinga 2 ### Init Script Icinga 2's init script is installed in `/etc/init.d/icinga2` by default: # /etc/init.d/icinga2 Usage: /etc/init.d/icinga2 {start|stop|restart|reload|checkconfig|status} The init script supports the following actions: Command | Description --------------------|------------------------ start | The `start` action starts the Icinga 2 daemon. stop | The `stop` action stops the Icinga 2 daemon. restart | The `restart` action is a shortcut for running the `stop` action followed by `start`. reload | The `reload` action sends the `HUP` signal to Icinga 2 which causes it to restart. Unlike the `restart` action `reload` does not wait until Icinga 2 has restarted. checkconfig | The `checkconfig` action checks if the `/etc/icinga2/icinga2.conf` configuration file contains any errors. status | The `status` action checks if Icinga 2 is running. By default the Icinga 2 daemon is running as `icinga` user and group using the init script. Using Debian packages the user and group are set to `nagios` for historical reasons. ### systemd Service Some distributions (e.g. Fedora, openSUSE and RHEL/CentOS 7) use systemd. The Icinga 2 packages automatically install the necessary systemd unit files. The Icinga 2 systemd service can be (re-)started, reloaded, stopped and also queried for its current status. # systemctl status icinga2 icinga2.service - Icinga host/service/network monitoring system Loaded: loaded (/usr/lib/systemd/system/icinga2.service; disabled) Active: active (running) since Mi 2014-07-23 13:39:38 CEST; 15s ago Process: 21692 ExecStart=/usr/sbin/icinga2 -c ${ICINGA2_CONFIG_FILE} -d -e ${ICINGA2_ERROR_LOG} -u ${ICINGA2_USER} -g ${ICINGA2_GROUP} (code=exited, status=0/SUCCESS) Process: 21674 ExecStartPre=/usr/sbin/icinga2-prepare-dirs /etc/sysconfig/icinga2 (code=exited, status=0/SUCCESS) Main PID: 21727 (icinga2) CGroup: /system.slice/icinga2.service 21727 /usr/sbin/icinga2 -c /etc/icinga2/icinga2.conf -d -e /var/log/icinga2/error.log -u icinga -g icinga --no-stack-rlimit Jul 23 13:39:38 nbmif icinga2[21692]: [2014-07-23 13:39:38 +0200] information/ConfigItem: Checked 309 Service(s). Jul 23 13:39:38 nbmif icinga2[21692]: [2014-07-23 13:39:38 +0200] information/ConfigItem: Checked 1 User(s). Jul 23 13:39:38 nbmif icinga2[21692]: [2014-07-23 13:39:38 +0200] information/ConfigItem: Checked 15 Notification(s). Jul 23 13:39:38 nbmif icinga2[21692]: [2014-07-23 13:39:38 +0200] information/ConfigItem: Checked 4 ScheduledDowntime(s). Jul 23 13:39:38 nbmif icinga2[21692]: [2014-07-23 13:39:38 +0200] information/ConfigItem: Checked 1 UserGroup(s). Jul 23 13:39:38 nbmif icinga2[21692]: [2014-07-23 13:39:38 +0200] information/ConfigItem: Checked 1 IcingaApplication(s). Jul 23 13:39:38 nbmif icinga2[21692]: [2014-07-23 13:39:38 +0200] information/ConfigItem: Checked 8 Dependency(s). Jul 23 13:39:38 nbmif systemd[1]: Started Icinga host/service/network monitoring system. The `systemctl` command supports the following actions: Command | Description --------------------|------------------------ start | The `start` action starts the Icinga 2 daemon. stop | The `stop` action stops the Icinga 2 daemon. restart | The `restart` action is a shortcut for running the `stop` action followed by `start`. reload | The `reload` action sends the `HUP` signal to Icinga 2 which causes it to restart. Unlike the `restart` action `reload` does not wait until Icinga 2 has restarted. status | The `status` action checks if Icinga 2 is running. enable | The `enable` action enables the service being started at system boot time (similar to `chkconfig`) Examples: # systemctl enable icinga2 # systemctl restart icinga2 Job for icinga2.service failed. See 'systemctl status icinga2.service' and 'journalctl -xn' for details. If you're stuck with configuration errors, you can manually invoke the [configuration validation](8-cli-commands.md#config-validation). ## Configuration Syntax Highlighting Icinga 2 ships configuration examples for syntax highlighting using the `vim` and `nano` editors. The RHEL, SUSE and Debian package `icinga2-common` install these files into `/usr/share/*/icinga2-common/syntax`. Sources provide these files in `tools/syntax`. ### Configuration Syntax Highlighting using Vim Create a new local vim configuration storage, if not already existing. Edit `vim/ftdetect/icinga2.vim` if your paths to the Icinga 2 configuration differ. $ PREFIX=~/.vim $ mkdir -p $PREFIX/{syntax,ftdetect} $ cp vim/syntax/icinga2.vim $PREFIX/syntax/ $ cp vim/ftdetect/icinga2.vim $PREFIX/ftdetect/ Test it: $ vim /etc/icinga2/conf.d/templates.conf ### Configuration Syntax Highlighting using Nano Copy the `/etc/nanorc` sample file to your home directory. Create the `/etc/nano` directory and copy the provided `icinga2.nanorc` into it. $ cp /etc/nanorc ~/.nanorc # mkdir -p /etc/nano # cp icinga2.nanorc /etc/nano/ Then include the icinga2.nanorc file in your ~/.nanorc by adding the following line: $ vim ~/.nanorc ## Icinga 2 include "/etc/nano/icinga2.nanorc" Test it: $ nano /etc/icinga2/conf.d/templates.conf ## Setting up Icinga Web 2 Icinga 2 can be used with Icinga Web 2 and a number of other web interfaces. This chapter explains how to set up Icinga Web 2. The [Alternative Frontends](14-alternative-frontends.md#alternative-frontends) chapter can be used as a starting point for installing some of the other web interfaces which are also available. The DB IDO (Database Icinga Data Output) modules for Icinga 2 take care of exporting all configuration and status information into a database. The IDO database is used by a number of projects including [Icinga Web 2](2-getting-started.md#setting-up-icingaweb2), Icinga Reporting or Icinga Web 1.x. There is a separate module for each database backend. At present support for both MySQL and PostgreSQL is implemented. ### Configuring DB IDO MySQL #### Installing MySQL database server Debian/Ubuntu: # apt-get install mysql-server mysql-client RHEL/CentOS 5/6: # yum install mysql-server mysql # chkconfig mysqld on # service mysqld start # mysql_secure_installation RHEL/CentOS 7 and Fedora: # yum install mariadb-server mariadb # systemctl enable mariadb # systemctl start mariadb # mysql_secure_installation SUSE: # zypper install mysql mysql-client # chkconfig mysqld on # service mysqld start #### Installing the IDO modules for MySQL The next step is to install the `icinga2-ido-mysql` package using your distribution's package manager. Debian/Ubuntu: # apt-get install icinga2-ido-mysql RHEL/CentOS: # yum install icinga2-ido-mysql SUSE: # zypper install icinga2-ido-mysql > **Note** > > The Debian/Ubuntu packages provide a database configuration wizard by > default. You can skip the automated setup and install/upgrade the > database manually if you prefer that. #### Setting up the MySQL database Set up a MySQL database for Icinga 2: # mysql -u root -p mysql> CREATE DATABASE icinga; GRANT SELECT, INSERT, UPDATE, DELETE, DROP, CREATE VIEW, INDEX, EXECUTE ON icinga.* TO 'icinga'@'localhost' IDENTIFIED BY 'icinga'; After creating the database you can import the Icinga 2 IDO schema using the following command: # mysql -u root -p icinga < /usr/share/icinga2-ido-mysql/schema/mysql.sql #### Enabling the IDO MySQL module The package provides a new configuration file that is installed in `/etc/icinga2/features-available/ido-mysql.conf`. You will need to update the database credentials in this file. All available attributes are explained in the [IdoMysqlConnection object](6-object-types.md#objecttype-idomysqlconnection) chapter. You can enable the `ido-mysql` feature configuration file using `icinga2 feature enable`: # icinga2 feature enable ido-mysql Module 'ido-mysql' was enabled. Make sure to restart Icinga 2 for these changes to take effect. After enabling the ido-mysql feature you have to restart Icinga 2: Debian/Ubuntu, RHEL/CentOS 6 and SUSE: # service icinga2 restart RHEL/CentOS 7 and Fedora: # systemctl restart icinga2 ### Configuring DB IDO PostgreSQL #### Installing PostgreSQL database server Debian/Ubuntu: # apt-get install postgresql RHEL/CentOS 5/6: # yum install postgresql-server postgresql # chkconfig postgresql on # service postgresql start RHEL/CentOS 7: # yum install postgresql-server postgresql # systemctl enable postgresql # systemctl start postgresql SUSE: # zypper install postgresql postgresql-server # chkconfig postgresql on # service postgresql start #### Installing the IDO modules for PostgreSQL The next step is to install the `icinga2-ido-pgsql` package using your distribution's package manager. Debian/Ubuntu: # apt-get install icinga2-ido-pgsql RHEL/CentOS: # yum install icinga2-ido-pgsql SUSE: # zypper install icinga2-ido-pgsql > **Note** > > Upstream Debian packages provide a database configuration wizard by default. > You can skip the automated setup and install/upgrade the database manually > if you prefer that. #### Setting up the PostgreSQL database Set up a PostgreSQL database for Icinga 2: # cd /tmp # sudo -u postgres psql -c "CREATE ROLE icinga WITH LOGIN PASSWORD 'icinga'"; # sudo -u postgres createdb -O icinga -E UTF8 icinga # sudo -u postgres createlang plpgsql icinga > **Note** > > When using PostgreSQL 9.x you can omit the `createlang` command. Locate your pg_hba.conf (Debian: `/etc/postgresql/*/main/pg_hba.conf`, RHEL/SUSE: `/var/lib/pgsql/data/pg_hba.conf`), add the icinga user with md5 authentication method and restart the postgresql server. # vim /var/lib/pgsql/data/pg_hba.conf # icinga local icinga icinga md5 host icinga icinga 127.0.0.1/32 md5 host icinga icinga ::1/128 md5 # "local" is for Unix domain socket connections only local all all ident # IPv4 local connections: host all all 127.0.0.1/32 ident # IPv6 local connections: host all all ::1/128 ident # /etc/init.d/postgresql restart After creating the database and permissions you can import the Icinga 2 IDO schema using the following command: # export PGPASSWORD=icinga # psql -U icinga -d icinga < /usr/share/icinga2-ido-pgsql/schema/pgsql.sql #### Enabling the IDO PostgreSQL module The package provides a new configuration file that is installed in `/etc/icinga2/features-available/ido-pgsql.conf`. You will need to update the database credentials in this file. All available attributes are explained in the [IdoPgsqlConnection object](6-object-types.md#objecttype-idopgsqlconnection) chapter. You can enable the `ido-pgsql` feature configuration file using `icinga2 feature enable`: # icinga2 feature enable ido-pgsql Module 'ido-pgsql' was enabled. Make sure to restart Icinga 2 for these changes to take effect. After enabling the ido-pgsql feature you have to restart Icinga 2: Debian/Ubuntu, RHEL/CentOS 6 and SUSE: # service icinga2 restart RHEL/CentOS 7 and Fedora: # systemctl restart icinga2 ### Webserver Debian/Ubuntu: # apt-get install apache2 RHEL/CentOS 6: # yum install httpd # chkconfig httpd on # service httpd start RHEL/CentOS 7/Fedora: # yum install httpd # systemctl enable httpd # systemctl start httpd SUSE: # zypper install apache2 # chkconfig on # service apache2 start ### Firewall Rules Example: # iptables -A INPUT -p tcp -m tcp --dport 80 -j ACCEPT # service iptables save RHEL/CentOS 7 specific: # firewall-cmd --add-service=http # firewall-cmd --permanent --add-service=http ### Setting Up External Command Pipe Web interfaces and other Icinga addons are able to send commands to Icinga 2 through the external command pipe. You can enable the External Command Pipe using the CLI: # icinga2 feature enable command After that you will have to restart Icinga 2: Debian/Ubuntu, RHEL/CentOS 6 and SUSE: # service icinga2 restart RHEL/CentOS 7 and Fedora: # systemctl restart icinga2 By default the command pipe file is owned by the group `icingacmd` with read/write permissions. Add your webserver's user to the group `icingacmd` to enable sending commands to Icinga 2 through your web interface: # usermod -a -G icingacmd www-data Debian packages use `nagios` as the default user and group name. Therefore change `icingacmd` to `nagios`. The webserver's user is different between distributions so you might have to change `www-data` to `wwwrun`, `www`, or `apache`. Change "www-data" to the user you're using to run queries. You can verify that the user has been successfully added to the `icingacmd` group using the `id` command: $ id ### Installing up Icinga Web 2 Please consult the [installation documentation](https://github.com/Icinga/icingaweb2/blob/master/doc/installation.md) for further instructions on how to install Icinga Web 2. ## Addons A number of additional features are available in the form of addons. A list of popular addons is available in the [Addons and Plugins](13-addons-plugins.md#addons-plugins) chapter.