How to install Virtualmin on Ubuntu 20.04

---

Virtualmin is an open-source web hosting and cloud control panel. It enables users to create multiple managed hosting environments and avoid switching to different servers. It's secure and allows access to the server via an SSL-encrypted HTTP with little technical knowledge. In this article, you will learn how to install Virtualmin Ubuntu control panel on 20.04 LTS Server.

Update the system

---

apt update
apt dist-upgrade

once the updates are installed, reboot the system with the command,

reboot

Once rebooted proceed with the steps below,

Add Swap

---

Command to create a Swap file.

Note: We are adding 1.5GB here since our test VPS has 512 MB of RAM if you want to add a different size then you can replace it in place of 1.5G

fallocate -l 1.5G /swapfile

To set write permission.[Default permissions only enable for root user]

chmod 600 /swapfile

To set up a swap area on the file.

mkswap /swapfile

To activate the swap file.

swapon /swapfile

Open the following file and add the given content to change it to permanent.

nano /etc/fstab

Add the following line.

/swapfile swap swap defaults 0 0

Now check the free -m size.

free -m

Output:

root@vps:~# free -m
               total        used        free      shared  buff/cache   available
Mem:             468         143          55           0         268         304
Swap:           2047           0        2047

NOTE: Now the added swap space can be seen.

Check Swap Information (Optional)

---

Command to check swap size.

swapon --show

Output:

root@vps:~# swapon --show
NAME      TYPE      SIZE   USED PRIO
/swapfile file      1.5G 441.7M   -2
/dev/vda2 partition 512M     0B   -3
root@vps:~#

Or you can check using the free -m command.

free -m

Output:

root@vps:~# free -m
               total        used        free      shared  buff/cache   available
Mem:             468         136          21           0         309         311
Swap:            511          18         493

NOTE: If the output is empty, it means that swap space is not enabled yet on your system.

Installing Virtualmin

---

Use the following command to download Virtualmin,

wget https://software.virtualmin.com/gpl/scripts/install.sh

Execute the scripts

---

chmod +x install.sh

To install both Webmin and Virtualmin

---

./install.sh

Output:

root@vps:~# ./install.sh
2022-06-23 21:03:20 URL:https://software.virtualmin.com/lib/slib.sh [22709/22709] -> "slib.sh" [1]

  Welcome to the Virtualmin GPL installer, version 6.2.2

  This script must be run on a freshly installed supported OS. It does not
  perform updates or upgrades (use your system package manager) or license
  changes (use the "virtualmin change-license" command).

  The systems currently supported by install.sh are:

    CentOS/RHEL Linux 7, and 8 on x86_64
    Debian 9, and 10 on i386 and amd64
    Ubuntu 16.04 LTS, 18.04 LTS, and 20.04 LTS on i386 and amd64

  If your OS/version/arch is not listed, installation will fail. More
  details about the systems supported by the script can be found here:

    https://www.virtualmin.com/os-support

  The selected package bundle is LAMP and the size of install is
  full. It will require up to 650 MB of disk space.

  Exit and re-run this script with --help flag to see available options.

 Continue? (y/n) y

Please enter [y] or [n]: y
[INFO] Started installation log in /root/virtualmin-install.log

Stop/Disable UFW:

---

ufw disabled
systemctl stop ufw
systemctl disable ufw

Accessing Virtualmin

---

To access Virtualmin, open the URL from your web browser: https://IP_address:10000.

Note:

1. When logging in for the first time, you will see an 'invalid SSL' warning.

2. Simply click on the 'Advanced' tab and then 'Accept the risk and Continue'.

Login to the Webmin web interface using your root user and password.

Once you log in, you will be redirected to the Webmin dashboard.