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Ubuntu 18.04 Server Configuration Cheat Sheet by

Common commands and installation basics I need to remember

Ubuntu Server 18.04

apt - Advanced Packaging Tool

Update available packages
 
sudo apt update
Upgrades all currently installed packages
 
sudo apt upgrade
Remove packages that are no longer required
 
sudo apt autoremove

ufw - Uncomp­licated Firewall

1. Install ufw
 
sudo apt install ufw
2 Setup default policies
 
sudo ufw default deny incoming
  
sudo ufw default allow outgoing
3. Allow SSH
 
sudo ufw allow 22
...or
 
sudo ufw allow ssh
4. Enable ufw
 
sudo ufw enable
5. Allow other connec­tions
...Apache
 
sudo ufw allow 'Apache Full'
...Webmin
 
sudo ufw allow 10000
View current ufw status
 
sudo ufw status verbose

Install Webmin

1. Edit the sources list
 
sudo nano /etc/a­pt/­sou­rce­s.list
Add the following line to your sources file
2. Download the Webmin PGP key
3. Install the Webmin PGP key
 
sudo apt-key add jcamer­on-­key.asc
4. Update packages including the Webmin repository
 
sudo apt update
5. Install Webmin
 
sudo apt install webmin
Once the instal­lation finishes, you'll be presented with the following output:
Webmin install complete. You can now login to https:­//y­our­_se­rve­r_i­p:10000 as root with your root password, or as any user who can use 
sudo
.
Add port 10000 to your firewall
 
sudo ufw allow 10000
 

Install Apache 2.4

Install Apache 2.x
 
sudo  apt install apache2
... or, as a single command
 
sudo apt update && apt-get install apache2
Enable ports through 
ufw
firewall
 
sudo ufw allow http && ufw allow https
... or, via pre-de­fined app settings
 
sudo ufw allow 'Apache Full'
Start Apache
 
sudo apachectl start
Restart Apache after changing settings
 
sudo apachectl restart
Where is Apache installed
 
which apache2

Install PHP

1. Install PHP
 
sudo apt install php libapa­che­2-m­od-php
2. Restart Apache
 
sudo systemctl restart apache2
Check where PHP is installed
 
which php
Check PHP version
 
php -v
Check INI file config­uration
 
php --ini
Dump PHP config­uration
 
php --info
Install optional modules
 
apt-get install php-pear php-fpm php-dev php-zip php-curl php-xmlrpc php-gd php-mysql php-mb­string php-xml libapa­che­2-m­od-php
check all the PHP modules available in Ubuntu
 
apt-cache search --name­s-only ^php

Install MySQL

Install MySQL
 
sudo apt install mysql-­server
Once the instal­lation is complete, the MySQL server should be started automa­tic­ally.
Check the status of MySQL
 
sudo netstat -tap | grep mysql
Start the service (if not running)
 
sudo systemctl restart mysql.s­ervice

Install MongoDB

Install MongoDB package
 
sudo apt install -y mongod­b-org
Check MongoDB service status
 
sudo systemctl status mongodb
Start MongoDB
 
sudo systemctl start mongod.se­rvice
Stop MongoDB
 
sudo systemctl stop mongod.se­rvice
Restart the MongoDB service
 
sudo systemctl restart mongodb
Enable automatic service startup
 
sudo systemctl enable mongod.se­rvice
Disable automatic service startup
 
sudo systemctl disable mongodb
       
 

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  • Published: 13th March, 2019
  • Last Updated: 9th April, 2019
  • Rated: 4 out of 5 stars based on 2 ratings

Favourited By

Jota

Comments

"I've been trying to install Webmin on my Ubuntu 18.04 server following various guides, but I keep running into issues. After adding the repository and updating, the installation seems to complete, but I can’t access Webmin at **https://[server IP]:10000/**. I checked that `ufw` is allowing port 10000, but still no luck. Restarting Webmin with `sudo systemctl restart webmin` doesn’t seem to help either.

I'm wondering if there's something outdated in the process or if Webmin no longer supports 18.04 properly. Should I be looking at a different method? I found this updated guide on **[Install Webmin on Ubuntu](https://docs.vultr.com/how-to-install-webmin-on-ubuntu-24-04)**—would following those steps work on my version, or should I consider upgrading my server? Any advice would be appreciated!"

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