This is a short guide for installing Icinga-Classic on Debian Wheezy using nginx web server.

Caution : This content is obsolete.

Configuration files are based on example config from Icinga Wiki (dead link - 404)

Installing

# apt-get install nginx fcgiwrap icinga-cgi icinga-common icinga-core icinga-doc

While configuring you should uncheck apache2 as a default server (there is no nginx there we will do configuring manually)

Configuring

Here is a sample nginx config file for icinga: 

server {
    listen 80;
    server_name icinga.example.com
    index index.php index.html index.htm;

    error_log /var/log/nginx/icinga-classic_error.log;

    location = / {
        rewrite ^/$ /icinga/index.html permanent;
    }

# Icinga Classic - Configuration
    location /icinga {
        alias   /usr/share/icinga/htdocs;
        index  index.html;
        auth_basic              "Icinga Access";
        auth_basic_user_file    /etc/icinga/htpasswd.users;
    }

    location /icinga/stylesheets {
        alias   /etc/icinga/stylesheets;
        auth_basic              "Icinga Access";
        auth_basic_user_file    /etc/icinga/htpasswd.users;
    }

    location ~ /icinga/(.*)\.cgi$ {
        root /usr/lib/cgi-bin/icinga;
        rewrite ^/cgi-bin/icinga/(.*)\.cgi /$1.cgi break;
        include /etc/nginx/fastcgi_params;
        fastcgi_pass  unix:/var/run/fcgiwrap.socket;
        fastcgi_index index.php;
        fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
        auth_basic              "Icinga Access";
        auth_basic_user_file    /etc/icinga/htpasswd.users;
        fastcgi_param  AUTH_USER          $remote_user;
        fastcgi_param  REMOTE_USER        $remote_user;
    }

# Security - Basic configuration
    location = /favicon.ico {
        log_not_found off;
        access_log off;
        expires max;
    }

    location = /robots.txt {
        allow all;
        log_not_found off;
        access_log off;
    }

    # Deny access to hidden files
    location ~ /\. {
        deny all;
        access_log off;
        log_not_found off;
    }
}

Replace server_name with your hostname, and write this config into file /etc/nginx/sites-available/icinga-classic

Create a symlink to this file from sites-enabled to enable this site: 

ln -s /etc/nginx/sites-available/icinga-classic /etc/nginx/sites-enabled/icinga-classic

Create a passwd file for your icinga user: 

cd /etc/icinga/; touch htpasswd.users; htpasswd htpasswd.users [userlogin]

Replace [userlogin] with login you would prefer to use

Now you can test your instance in your browser. If you are lucky it will work

What next

Do your other configuring of icinga as you wish, it is web server independent, you can use any tutorial you like

Also think about move you icinga instance from http to https for more security. Use other tutorials to make nginx work properly with https.

Configuring icinga2-classicui

The configuration is quite close to the one above. Heres a sample configuration: 

server {
    listen 80;
    server_name icinga.example.com
    index index.php index.html index.htm;

    error_log /var/log/nginx/icinga-classic_error.log;

    location = / {
        rewrite ^/$ /icinga/index.html permanent;
    }

  auth_basic              "Icinga Access";
  auth_basic_user_file    /etc/icinga/htpasswd.users;

  root  /usr/share/icinga2/classicui;

  location = / {
      rewrite ^/$ /icinga2-classicui/index.html permanent;
  }
  location /icinga2-classicui/stylesheets {
    alias   /etc/icinga/stylesheets;
  }
  location /icinga2-classicui {
    alias  /usr/share/icinga2/classicui;
  }


  location ~ /cgi-bin/(.*)\.cgi$ {
    root /usr/lib/cgi-bin/icinga2-classicui;
    rewrite ^/cgi-bin/icinga2-classicui/(.*)\.cgi /$1.cgi break;
    include /etc/nginx/fastcgi_params;
    fastcgi_pass  unix:/var/run/fcgiwrap.socket;
    fastcgi_index index.php;
    fastcgi_param ICINGA_CGI_CONFIG /etc/icinga2-classicui/cgi.cfg;
    fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
    fastcgi_param  AUTH_USER          $remote_user;
    fastcgi_param  REMOTE_USER        $remote_user;
  }


# Security - Basic configuration
    location = /favicon.ico {
        log_not_found off;
        access_log off;
        expires max;
    }

    location = /robots.txt {
        allow all;
        log_not_found off;
        access_log off;
    }

    # Deny access to hidden files
    location ~ /\. {
        deny all;
        access_log off;
        log_not_found off;
    }
}