NagiosXI

Installation in no internet environment

• Enable required repos

• Install required packages

Update SSL Certificate

• SSLCertificateFile /usr/local/nagiosxi/var/certs/nagiosxi.crt

• SSLCertificateKeyFile /usr/local/nagiosxi/var/certs/nagiosxi.key

• HTTP Config: /etc/httpd/conf.d/ssl.conf

• Restart service: sudo systemctl restart httpd

Note about encrypted private key:

• If the encrypted key in PEM (OpenSSL) format, it starts with -- BEGIN RSA PRIVATE KEY --, the command to decrypt the key is: openssl rsa -in enc.key -out dec.key

• If the encrypted key in PEM (PKCS#8) format, it start with -- BEGIN ENCRYPTED PRIVATE KEY --, a special config file to use old algirithm is required to decrypt the key:

  • Create openssl-legacy.cnf file

  openssl_conf=openssl_init
  
  [openssl_init]
  providers=provider_sect
  
  [provider_sect]
  default=default_sect
  legacy=legacy_sect
  
  [default_sect]
  activate=1
  
  [legacy_sect]
  activate=1

  • Run decrypt command: OPENSSL_CONF=openssl-legacy.cnf openssl rsa -in enc.key -out dec.key

Customize Operation Screen

• https://server.com/nagiosxi/includes/components/opscreen/opscreen.php

• /usr/local/nagiosxi/html/includes/components/opscreen/onscreen.php

• Remove Nagios Logo and below text: Comment below section in/usr/local/nagiosxi/html/includes/components/opscreen/merlin.php

<!--
<div class="logo">
    <a href="http://www.nagios.com/" target="blank" rel="nofollow"><img src="images/nagios.png" border="0" alt="Nagios" title="Nagios"></a> 
    <br clear="right">

    <div class="logotext"><?php echo ("Operations Screen"); ?></div>
</div>
-->

• Change Color of pages and header text: add css style to body.child and h2 in /usr/local/nagiosxi/html/includes/components/opscreen/onscreen.php

body.child {
        font-family: sans-serif;
        line-height: 1.4em;
        font-size: 1.2rem;
        overflow-x: hidden;
        padding: .5em 1em;
        background: #404040;
    }

    h2 {
        margin: 0 0 .2em 0;
        font-size: 1em;
        color: white;
        text-shadow: 1px 1px 0 #000;
    }