Short Notes on LibreNMS !

This post contains short notes & step by step guide on *NMS* –  An open source network monitoring system called LIBRENMS , it is based on MRTG Php/MySQL/Snmp.

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STEP BY STEP iNSTALLATION FOR LIBRENMS

Recommended OS: Ubuntu 18 or 20  (Server Edition/64bit), follow official guide as per below ,

https://docs.librenms.org/Installation/Installation-Ubuntu-1804-Apache/

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Tips on upgrade PHP 7.2 to 7.4 on Ubuntu 16.4

I had few older installation done on Ubuntu 16.4 which were giving error for php 7.2 version, therefore I am posting this guide so that you can still upgrade to older version if required.

Upgrading LIbrenms php 7.2 to 7.4

Install 3rd party repository to add support for installing Php 7.4 in UBUNTU 16.4 SERVER.

sudo add-apt-repository ppa:jczaplicki/xenial-php74-temp
sudo apt-get update

*Install php7.4*

apt install composer php7.4 php7.4-cli php7.4-curl php7.4-fpm php7.4-gd php7.4-json php7.4-mbstring php7.4-mysql php7.4-snmp php7.4-xml php7.4-zip

*Change Timezone in PHP*

nano /etc/php/7.4/fpm/php.ini
nano /etc/php/7.4/cli/php.ini

Search for date.time in above 2 _php_ files & change it as per your time zone example

date.timezone = Asia/Karachi

*Configure PHP-FPM*

cp /etc/php/7.4/fpm/pool.d/www.conf /etc/php/7.4/fpm/pool.d/librenms.conf
nano /etc/php/7.4/fpm/pool.d/librenms.conf

in above librenms.conf file, Change below

[www] to [librenms]
user = librenms
group = librenms
listen = /run/php-fpm-librenms.sock

Save & Exit.

Now move & edit below file

mv /etc/apache2/sites-available/librenms.conf /etc/apache2/sites-available/librenms-7.2.conf
nano /etc/apache2/sites-available/librenms.conf

*** use this as template ***

<VirtualHost *:80>
DocumentRoot /opt/librenms/html/
ServerName librenms.jahanzaib.com

AllowEncodedSlashes NoDecode
<Directory "/opt/librenms/html/">
Require all granted
AllowOverride All
Options FollowSymLinks MultiViews
</Directory>

<IfModule setenvif_module>
SetEnvIfNoCase ^Authorization$ "(.+)" HTTP_AUTHORIZATION=$1
</IfModule>

<FilesMatch ".+\.php$">
SetHandler "proxy:unix:/run/php-fpm-librenms.sock|fcgi://localhost"
</FilesMatch>
</VirtualHost>

SAVE & EXIT.

Restart few services & you will be good to Go Insha.Allah !

a2enmod proxy_fcgi setenvif rewrite
a2ensite librenms.conf
systemctl restart php7.4-fpm
systemctl restart apache2

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