NOTE: These instructions assume you are the root user. If you are not, prepend sudo to the shell commands (the ones that aren't at mysql> prompts) or temporarily become a user with root privileges with sudo -s or sudo -i.

DB Server

NOTE: Whilst we are working on ensuring LibreNMS is compatible with MySQL strict mode, for now, please disable this after mysql is installed.

Install / Configure MySQL

apt-get install mariadb-server mariadb-client
systemctl restart mysql
mysql -uroot -p
CREATE DATABASE librenms CHARACTER SET utf8 COLLATE utf8_unicode_ci;
GRANT ALL PRIVILEGES ON librenms.*
  TO 'librenms'@'localhost'
  IDENTIFIED BY '<password>'
;
FLUSH PRIVILEGES;
exit

vim /etc/mysql/mariadb.conf.d/50-server.cnf

Within the [mysqld] section please add:

innodb_file_per_table=1
sql-mode=""

systemctl restart mysql

Web Server

Install / Configure Apache

apt-get install libapache2-mod-php7.0 php7.0-cli php7.0-mysql php7.0-gd php7.0-snmp php-pear php7.0-curl snmp graphviz php7.0-mcrypt php7.0-json apache2 fping imagemagick whois mtr-tiny nmap python-mysqldb snmpd php-net-ipv4 php-net-ipv6 rrdtool git

In /etc/php/7.0/apache2/php.ini and /etc/php/7.0/cli/php.ini, ensure date.timezone is set to your preferred time zone. See http://php.net/manual/en/timezones.php for a list of supported timezones. Valid examples are: "America/New_York", "Australia/Brisbane", "Etc/UTC".

a2enmod php7.0
a2dismod mpm_event
a2enmod mpm_prefork
phpenmod mcrypt

Add librenms user

useradd librenms -d /opt/librenms -M -r
usermod -a -G librenms www-data

Clone repo

cd /opt
git clone https://github.com/librenms/librenms.git librenms

Web interface

cd /opt/librenms
mkdir rrd logs
chmod 775 rrd
vim /etc/apache2/sites-available/librenms.conf

Add the following config:

<VirtualHost *:80>
  DocumentRoot /opt/librenms/html/
  ServerName  librenms.example.com
  CustomLog /opt/librenms/logs/access_log combined
  ErrorLog /opt/librenms/logs/error_log
  AllowEncodedSlashes NoDecode
  <Directory "/opt/librenms/html/">
    Require all granted
    AllowOverride All
    Options FollowSymLinks MultiViews
  </Directory>
</VirtualHost>
a2ensite librenms.conf
a2enmod rewrite
systemctl restart apache2

NOTE: If this is the only site you are hosting on this server (it should be :)) then you will need to disable the default site.

a2dissite 000-default

Web installer

Now head to: http://librenms.example.com/install.php and follow the on-screen instructions.

Configure snmpd

cp /opt/librenms/snmpd.conf.example /etc/snmp/snmpd.conf
vim /etc/snmp/snmpd.conf

Edit the text which says RANDOMSTRINGGOESHERE and set your own community string.

curl -o /usr/bin/distro https://raw.githubusercontent.com/librenms/librenms-agent/master/snmp/distro
chmod +x /usr/bin/distro
systemctl restart snmpd

Cron job

cp librenms.nonroot.cron /etc/cron.d/librenms

Copy logrotate config

LibreNMS keeps logs in /opt/librenms/logs. Over time these can become large and be rotated out. To rotate out the old logs you can use the provided logrotate config file:

cp misc/librenms.logrotate /etc/logrotate.d/librenms

Final steps

chown -R librenms:librenms /opt/librenms

Run validate.php as root in the librenms directory:

cd /opt/librenms
./validate.php

That's it! You now should be able to log in to http://librenms.example.com/. Please note that we have not covered HTTPS setup in this example, so your LibreNMS install is not secure by default. Please do not expose it to the public Internet unless you have configured HTTPS and taken appropriate web server hardening steps.

Add first device

We now suggest that you add localhost as your first device from within the WebUI.

What next?

Now that you've installed LibreNMS, we'd suggest that you have a read of a few other docs to get you going:

Closing

We hope you enjoy using LibreNMS. If you do, it would be great if you would consider opting into the stats system we have, please see this page on what it is and how to enable it.