For those who want to run LibreNMS network monitoring software on Ubuntu with Nginx and PHP 7.2-FPM support, the steps below should be a great place to start.
LibreNMS is a popular LAMP/ LEMP based network monitoring software that helps you gain insights and simplifies logs data from your networking devices so you can make sense of them. It helps you monitor, search and analyse the vast amount of data, (especially in a larger environments) into a simple format that you can easily read and digest.
LibreNMS automatically discover your entire network using CDP, FDP, LLDP, OSPF, BGP, SNMP and ARP and provide you alerts via email, slack and more.
LibreNMS supports majority of the network devices in use today. from many major manufacturers. including vast majority of the networking devices deployed.
This brief tutorial is going to show students and new users how to install LibreNMS software on Ubuntu 16.04 / 17.10 and 18.04 LTS servers.
For more about LibreNMS, please check its homepage.
When you’re ready to install LibreNMS, follow the steps below:
Step 1: Install Nginx HTTP Server on Ubuntu
Nginx HTTP Server is probably the second most popular web server in use. so install it since LibreNMS needs it. To install Nginx HTTP on Ubuntu server, run the commands below.
sudo apt update sudo apt install nginx
After installing Nginx , the commands below can be used to stop, start and enable Nginx service to always start up with the server boots.
sudo systemctl stop nginx.service sudo systemctl start nginx.service sudo systemctl enable nginx.service
To test Nginx setup, open your browser and browse to the server hostname or IP address and you should see Nginx default test page as shown below. When you see that, then Nginx is working as expected.
Step 2: Install MariaDB Database Server
MariaDB database server is a great place to start when looking at open source database servers to use with LibreNMS. To install MariaDB run the commands below.
sudo apt-get install mariadb-server mariadb-client
After installing MariaDB, the commands below can be used to stop, start and enable MariaDB service to always start up when the server boots.
Run these on Ubuntu 16.04 LTS
sudo systemctl stop mysql.service sudo systemctl start mysql.service sudo systemctl enable mysql.service
Run these on Ubuntu 18.04 and 18.10 LTS
sudo systemctl stop mariadb.service sudo systemctl start mariadb.service sudo systemctl enable mariadb.service
After that, run the commands below to secure MariaDB server by creating a root password and disallowing remote root access.
sudo mysql_secure_installation
When prompted, answer the questions below by following the guide.
- Enter current password for root (enter for none): Just press the Enter
- Set root password? [Y/n]: Y
- New password: Enter password
- Re-enter new password: Repeat password
- Remove anonymous users? [Y/n]: Y
- Disallow root login remotely? [Y/n]: Y
- Remove test database and access to it? [Y/n]: Y
- Reload privilege tables now? [Y/n]: Y
To test if MariaDB is installed, type the commands below to logon to MariaDB server
sudo mysql -u root -p
Then type the password you created above to sign on. if successful, you should see MariaDB welcome message
Step 3: Install PHP 7.2 and Related Modules
PHP 7.2 may not be available in Ubuntu default repositories. in order to install it, you will have to get it from third-party repositories.
Run the commands below to add the below third-party repository to upgrade to PHP 7.2
sudo apt-get install software-properties-common sudo add-apt-repository ppa:ondrej/php
Then update and upgrade to PHP 7.2
sudo apt update
Next, run the commands below to install PHP 7.2 and related modules.
sudo apt install php7.2-fpm php7.2-common php7.2-mysql php7.2-gmp php7.2-curl php7.2-snmp php7.2-json php7.2-intl php7.2-mbstring php7.2-xmlrpc php7.2-mysql php7.2-gd php7.2-xml php7.2-cli php7.2-zip
After installing PHP 7.2, run the commands below to open PHP default config file for Nginx .
sudo nano /etc/php/7.2/fpm/php.ini
Then make the changes on the following lines below in the file and save. The value below is great settings to apply in your environments.
file_uploads = On allow_url_fopen = On short_open_tag = On memory_limit = 256M upload_max_filesize = 100M max_execution_time = 360 date.timezone = America/Chicago
After making the change above, save the file and close out. Next, restart Nginx by running the commands below:
sudo systemctl restart nginx.service
Step 4: Create LibreNMS Database
Now that you’ve installed all the packages that are required for LibreNMS to function, continue below to start configuring the servers. First run the commands below to create a blank LibreNMS.
To logon to MariaDB database server, run the commands below.
sudo mysql -u root -p
Then create a database called librenms
CREATE DATABASE librenms;
Create a database user called librenms with new password
CREATE USER 'librenmsuser'@'localhost' IDENTIFIED BY 'new_password_here';
Then grant the user full access to the database.
GRANT ALL ON librenms.* TO 'librenmsuser'@'localhost' IDENTIFIED BY 'user_password_here' WITH GRANT OPTION;
Finally, save your changes and exit.
FLUSH PRIVILEGES; EXIT;
Next, run the commands below to open MariaDB default config file.
sudo nano /etc/mysql/mariadb.conf.d/50-server.cnf
Then add the lines below and save.
innodb_file_per_table=1 lower_case_table_names=0
Restart MariaDB after that.
Install these additional dependencies to satisfy LibreNMS installation.
sudo apt install curl git composer fping graphviz imagemagick nmap python-memcache python-mysqldb rrdtool snmp snmpd whois curl -sS | sudo php -- --install-dir=/usr/local/bin --filename=composer
Step 5: Install LibreNMS
Now that you’ve installed and configured the servers, run the commands below to add a new users for LibreNMS, then add the user to the www-data (Nginx ) default group.
sudo useradd librenms -d /opt/librenms -M -r sudo usermod -a -G librenms www-data
Next, change into the /opt directory and download LibreNMS package from its project.
cd /opt sudo composer create-project --no-dev --keep-vcs librenms/librenms librenms dev-master
After that, follow the guide below to configure snmp server.
sudo cp /opt/librenms/snmpd.conf.example /etc/snmp/snmpd.conf sudo nano /etc/snmp/snmpd.conf
Edit the text which says RANDOMSTRINGGOESHERE and set your own community string. you can change it to anything you’d like. Save the file when you’re done.
sudo curl -o /usr/bin/distro sudo chmod +x /usr/bin/distro sudo systemctl restart snmpd
After that run the commands below to create a cron task for LibreNMS.
sudo cp /opt/librenms/librenms.nonroot.cron /etc/cron.d/librenms
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:
sudo cp /opt/librenms/misc/librenms.logrotate /etc/logrotate.d/librenms
When you’re done. run the commands below to configure an appropriate permissions for LibreNMS user account.
sudo chown -R librenms:librenms /opt/librenms sudo setfacl -d -m g::rwx /opt/librenms/rrd /opt/librenms/logs /opt/librenms/bootstrap/cache/ /opt/librenms/storage/ sudo setfacl -R -m g::rwx /opt/librenms/rrd /opt/librenms/logs /opt/librenms/bootstrap/cache/ /opt/librenms/storage/
Step 6: Configure Nginx
Finally, configure Apahce2 site configuration file for LibreNMS by running the commands below. This file will control how users access LibreNMS content. Run the commands below to create a new configuration file called librenms
sudo nano /etc/nginx/sites-available/librenms
Then copy and paste the content below into the file and save.
server {
listen 80;
listen [::]:80;
root /opt/librenms/html;
index index.php;
server_name example.com www.example.com;
client_max_body_size 100M;
location / {
try_files $uri $uri/ /index.php?$query_string;
}
location /api/v0 {
try_files $uri $uri/ /api_v0.php?$query_string;
}
location ~ \.php$ {
include snippets/fastcgi-php.conf;
fastcgi_pass unix:/var/run/php/php7.2-fpm.sock;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include fastcgi_params;
}
}
Save the file and exit.
Step 7: Enable the LibreNMS
After configuring the VirtualHost above, enable it by running the commands below
sudo ln -s /etc/nginx/sites-available/librenms /etc/nginx/sites-enabled/
Step 8 : Restart Nginx
To load all the settings above, restart Nginx by running the commands below.
sudo systemctl restart nginx.service
Finally, run the commands below to complete the setup.
cd /opt/librenms sudo ./scripts/composer_wrapper.php install --no-dev
Next, open your browser and browse to the URL below to begin the setup.
You should see LibreNMS setup page. Continue with the setup wizard until you’re done.
Verify that all the PHP requirements are met. then continue with the database configuration. Type the database connection info you created above and continue.
Then create an account for LibreNMS web portal and continue.
Finally, complete the installation.
When you’re done, logon with:
That’s it!
Conclusion:
You’ve successfully installed LibreNMS on Ubuntu 16.04 | 18.04 and 18.10 servers. Hope you continue to read our tutorials on Linux and Ubuntu.
Enjoy!
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