LibreNMS on Ubuntu 16.04

First we will install and enter MariaDB:

apt-get install mariadb-server mariadb-client systemctl restart mysql mysql -u root -p

Next is the creation of the database and user:

CREATE DATABASE librenms CHARACTER SET utf8 COLLATE utf8_unicode_ci; CREATE USER 'librenms'@'localhost' IDENTIFIED BY 'password'; GRANT ALL PRIVILEGES ON librenms.* TO 'librenms'@'localhost'; FLUSH PRIVILEGES; exit

The following lines must be added to /etc/mysql/mariadb.conf.d/50-server.cnf in the [mysqld] section:


Restart the database:

systemctl restart mysql

Now we need Apache, PHP, and related/other packages:

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 curl

Next, modify the date.timezone setting in both /etc/php/7.0/apache2/php.ini and /etc/php/5.0/cli/php.ini:

date.timezone = "America/Los_Angeles"

Apache needs some modification, as does PHP:

a2enmod php7.0 a2dismod mpm_event a2enmod mpm_prefork phpenmod mcrypt

Add librenms user to Ubuntu:

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

Clone the LibreNMS repo:

cd /opt git clone librenms

Create necessary subdirectories with permissions:

cd /opt/librenms mkdir rrd logs chmod 775 rrd

Edit the file /etc/apache2/sites-available/default-ssl.conf:

<IfModule mod_ssl.c> <VirtualHost _default_:443> ServerAdmin #DocumentRoot /var/www/html DocumentRoot /opt/librenms/html/ ServerName # Available loglevels: trace8, ..., trace1, debug, info, notice, warn, # error, crit, alert, emerg. # It is also possible to configure the loglevel for particular # modules, e.g. #LogLevel info ssl:warn ErrorLog /opt/librenms/logs/error_log CustomLog /opt/librenms/logs/access_log combined AllowEncodedSlashes NoDecode <Directory "/opt/librenms/html/"> Require all granted AllowOverride All Options FollowSymLinks MultiViews </Directory> # For most configuration files from conf-available/, which are # enabled or disabled at a global level, it is possible to # include a line for only one particular virtual host. For example the # following line enables the CGI configuration for this host only # after it has been globally disabled with "a2disconf". #Include conf-available/serve-cgi-bin.conf # SSL Engine Switch: # Enable/Disable SSL for this virtual host. SSLEngine on # A self-signed (snakeoil) certificate can be created by installing # the ssl-cert package. See # /usr/share/doc/apache2/README.Debian.gz for more info. # If both key and certificate are stored in the same file, only the # SSLCertificateFile directive is needed. SSLCertificateFile /etc/ssl/certs/ssl-cert-snakeoil.pem SSLCertificateKeyFile /etc/ssl/private/ssl-cert-snakeoil.key # Server Certificate Chain: # Point SSLCertificateChainFile at a file containing the # concatenation of PEM encoded CA certificates which form the # certificate chain for the server certificate. Alternatively # the referenced file can be the same as SSLCertificateFile # when the CA certificates are directly appended to the server # certificate for convinience. #SSLCertificateChainFile /etc/apache2/ssl.crt/server-ca.crt # Certificate Authority (CA): # Set the CA certificate verification path where to find CA # certificates for client authentication or alternatively one # huge file containing all of them (file must be PEM encoded) # Note: Inside SSLCACertificatePath you need hash symlinks # to point to the certificate files. Use the provided # Makefile to update the hash symlinks after changes. #SSLCACertificatePath /etc/ssl/certs/ #SSLCACertificateFile /etc/apache2/ssl.crt/ca-bundle.crt # Certificate Revocation Lists (CRL): # Set the CA revocation path where to find CA CRLs for client # authentication or alternatively one huge file containing all # of them (file must be PEM encoded) # Note: Inside SSLCARevocationPath you need hash symlinks # to point to the certificate files. Use the provided # Makefile to update the hash symlinks after changes. #SSLCARevocationPath /etc/apache2/ssl.crl/ #SSLCARevocationFile /etc/apache2/ssl.crl/ca-bundle.crl # Client Authentication (Type): # Client certificate verification type and depth. Types are # none, optional, require and optional_no_ca. Depth is a # number which specifies how deeply to verify the certificate # issuer chain before deciding the certificate is not valid. #SSLVerifyClient require #SSLVerifyDepth 10 # SSL Engine Options: # Set various options for the SSL engine. # o FakeBasicAuth: # Translate the client X.509 into a Basic Authorisation. This means that # the standard Auth/DBMAuth methods can be used for access control. The # user name is the `one line' version of the client's X.509 certificate. # Note that no password is obtained from the user. Every entry in the user # file needs this password: `xxj31ZMTZzkVA'. # o ExportCertData: # This exports two additional environment variables: SSL_CLIENT_CERT and # SSL_SERVER_CERT. These contain the PEM-encoded certificates of the # server (always existing) and the client (only existing when client # authentication is used). This can be used to import the certificates # into CGI scripts. # o StdEnvVars: # This exports the standard SSL/TLS related `SSL_*' environment variables. # Per default this exportation is switched off for performance reasons, # because the extraction step is an expensive operation and is usually # useless for serving static content. So one usually enables the # exportation for CGI and SSI requests only. # o OptRenegotiate: # This enables optimized SSL connection renegotiation handling when SSL # directives are used in per-directory context. #SSLOptions +FakeBasicAuth +ExportCertData +StrictRequire <FilesMatch "\.(cgi|shtml|phtml|php)$"> SSLOptions +StdEnvVars </FilesMatch> <Directory /usr/lib/cgi-bin> SSLOptions +StdEnvVars </Directory> # SSL Protocol Adjustments: # The safe and default but still SSL/TLS standard compliant shutdown # approach is that mod_ssl sends the close notify alert but doesn't wait for # the close notify alert from client. When you need a different shutdown # approach you can use one of the following variables: # o ssl-unclean-shutdown: # This forces an unclean shutdown when the connection is closed, i.e. no # SSL close notify alert is send or allowed to received. This violates # the SSL/TLS standard but is needed for some brain-dead browsers. Use # this when you receive I/O errors because of the standard approach where # mod_ssl sends the close notify alert. # o ssl-accurate-shutdown: # This forces an accurate shutdown when the connection is closed, i.e. a # SSL close notify alert is send and mod_ssl waits for the close notify # alert of the client. This is 100% SSL/TLS standard compliant, but in # practice often causes hanging connections with brain-dead browsers. Use # this only for browsers where you know that their SSL implementation # works correctly. # Notice: Most problems of broken clients are also related to the HTTP # keep-alive facility, so you usually additionally want to disable # keep-alive for those clients, too. Use variable "nokeepalive" for this. # Similarly, one has to force some clients to use HTTP/1.0 to workaround # their broken HTTP/1.1 implementation. Use variables "downgrade-1.0" and # "force-response-1.0" for this. # BrowserMatch "MSIE [2-6]" \ # nokeepalive ssl-unclean-shutdown \ # downgrade-1.0 force-response-1.0 </VirtualHost> </IfModule> # vim: syntax=apache ts=4 sw=4 sts=4 sr noet

Add the following line to the file /etc/apache2/sites-available/000-default to redirect to https:

Redirect "/" ""

Enable apache mods:

a2enmod rewrite
a2enmod ssl

Enable the sites:

a2ensite /etc/apache2/sites-available/default-ssl.conf

Restart apache:

systemctl restart apache2

Web installer: go to

Configure SMNP

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

Edit /etc/snmp/snmpd.conf

Change RANDOMSTRINGGOESHERE to your own community string

Get snmp agent for LibreNMS server:

curl -o /usr/bin/distro chmod +x /usr/bin/distro systemctl restart snmpd

Set up cron job:

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

Use provided logrotate config:

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

Final steps:

chown -R librenms:librenms /opt/librenms
cd /opt/librenms ./validate.php