Megaphone Commons

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# Install Icinga2 and Icingaweb2

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### Installation (Master Node)

Steps are adapted from [this guide](http://linoxide.com/ubuntu-how-to/install-icinga2-ubuntu-16-04/).

#### Install Icinga2

```bash

# Install MySQL if you haven't yet

# These lines for Ubuntu 18.04 only:

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

echo "deb http://packages.icinga.com/ubuntu icinga-bionic main" >  /etc/apt/sources.list.d/bionic-icinga.list

apt update

apt-get install icinga2

apt-get install icinga2-ido-mysql

# These 3 lines for Debian 8 only:

echo 'deb http://ftp.debian.org/debian jessie-backports main' > /etc/apt/sources.list.d/jessie-backports.list

apt-get update

apt-get -t jessie-backports install icinga2

apt-get -t jessie-backports install icinga2-ido-mysql

systemctl enable icinga2.service

systemctl start icinga2.service

apt install nagios-plugins

# nagios-plugins has Samba as a dependency, but you should remove it.

apt remove samba-common samba-libs

icinga2 feature enable ido-mysql

systemctl restart icinga2.service

```

#### Install Icingaweb2

```bash

apt install icingaweb2

```

* Go to http://<your IP>/icingaweb2/setup.

* Finish from here: https://linoxide.com/ubuntu-how-to/install-icinga2-ubuntu-16-04, starting with "Configuring Icinga Web2 plugin"

### Configuration

-   Run `icinga2 node wizard. `Select "N" to create a master node.

-   Enable the api and command module to allow issuing commands from Icingaweb2 and to allow API:

    `icinga2 feature enable api command; service icinga2 restart`

-   Add an API user for remote checks.  For instance, a user that can

    receive backupninja checks.  Add this to `/etc/icinga2/conf.d/api-users.conf`:

    ```

    object ApiUser "backupninja" {

      password = "<redacted>"

      permissions = [

        {

          permission = "actions/process-check-result"

          filter = {{ match("backupninja", service.display_name) }}

        },

        {

          permission = "actions/reschedule-check"

          filter = {{ match("backupninja", service.display_name) }}

        }

      ]

    }

    ```

### Open the firewall

Open port 5665 on the master node's firewall.  Edit the files in `/etc/iptables` and restart `netfilter-persistent`.

### Install additional checks

#### Install Plugins

Place the following two scripts in your plugins directory

(`/usr/lib/nagios/plugins`) and ensure they're executable:

-   **check_drupal** - installs with the Drupal "nagios" plugin, also

    available

    [here](http://cgit.drupalcode.org/nagios/plain/nagios-plugin/check_drupal?id=7da732e2d4943ec5368243f4cd2e33eb02769f23).

-   **check_civicrm** - There are two scripts - one for Civi 4.6 and

    below, another for 4.7 and up.  4.7 version is available

    [here](https://raw.githubusercontent.com/PalanteJon/check_civicrm/master/check_civicrm.php),

    4.6 version is [here](https://raw.githubusercontent.com/aghstrategies/com.aghstrategies.civimonitor/master/check_civicrm.php).

-   **check_domain** - This does a WHOIS lookup to ensure domain names aren't about to expire.  Install from

    [here](https://raw.githubusercontent.com/glensc/monitoring-plugin-check_domain/master/check_domain.sh).

-   **check_rbl** - Check spam blacklists.  File is [here](https://raw.githubusercontent.com/matteocorti/check_rbl/master/check_rbl), also install dependencies:

    `apt install libreadonly-xs-perl libnagios-plugin-perl libdata-validate-ip-perl libdata-validate-domain-perl libnet-dns-perl`

#### Define CheckCommand and Service objects for the new plugins

Copy the CheckCommand and Service files from

`icinga.jmaconsulting.biz:/etc/icinga2/zones.d/global-templates/CheckCommands`

and `icinga.jmaconsulting.biz:/etc/icinga2/conf.d/services`. See [[Add New Checks to Icinga2]] for details.

### Harden the TLS connection

Add this line to the bottom of the "api" object in `/etc/icinga2/features-available/api.conf`:

```

tls_protocolmin = "TLSv1.2"

```

### Set up vim syntax highlighting on the Icinga2 server

```bash

mkdir -p ~/.vim/{syntax,ftdetect}

cd ~/.vim/syntax

wget https://raw.githubusercontent.com/Icinga/icinga2/master/tools/syntax/vim/syntax/icinga2.vim

cd ~/.vim/ftdetect

wget https://raw.githubusercontent.com/Icinga/icinga2/master/tools/syntax/vim/ftdetect/icinga2.vim

```