To Install Webmin On Debian 11.3

Introduction:

Webmin is an open-source web-based system configuration tool for Linux system administration. By using this tool, we can manage internal system configurations such as user accounts, disk quotas, Apache, DNS, PHP, MySQL, file sharing, and many others.

Installation and Configuration procedure.

Step 1: Check the OS version by using the below command

root@linuxhelp:~# lsb_release -a
Distributor ID: Debian
Description:    Debian GNU/Linux 11 (bullseye)
Release:        11
Codename:       bullseye

Step 2: Next update the repository by using the below command

root@linuxhelp:~# sudo apt update && sudo apt upgrade
Hit:1 http://security.debian.org/debian-security bullseye-security InRelease
Hit:2 http://repo.mysql.com/apt/debian bullseye InRelease
Hit:3 http://deb.debian.org/debian bullseye InRelease
Get:4 http://deb.debian.org/debian bullseye-updates InRelease [44.1 kB]
Hit:5 https://packages.sury.org/php bullseye InRelease
Fetched 44.1 kB in 1s (59.8 kB/s)
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
157 packages can be upgraded. Run 'apt list --upgradable' to see them.
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Calculating upgrade... Done


The following NEW packages will be installed:
  linux-image-5.10.0-18-amd64
Running hooks in /etc/ca-certificates/update.d...
Done.

Step 3: Add the GPG key signed by webmin by using the below command

root@linuxhelp:~# wget -qO - http://www.webmin.com/jcameron-key.asc | sudo apt-key add -
Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)).
OK

Step 4: Add the Integrate Webmin repository by using the below command

root@linuxhelp:~# sudo sh -c 'echo "deb http://download.webmin.com/download/repository sarge contrib" > \
/etc/apt/sources.list.d/webmin.list'

Step 5: Again update the repository by using the below command

root@linuxhelp:~# apt-get update
Hit:1 http://deb.debian.org/debian bullseye InRelease
Hit:2 http://security.debian.org/debian-security bullseye-security InRelease
Hit:3 http://repo.mysql.com/apt/debian bullseye InRelease
Hit:4 http://deb.debian.org/debian bullseye-updates InRelease
Hit:5 https://packages.sury.org/php bullseye InRelease
Ign:6 http://download.webmin.com/download/repository sarge InRelease

Get:7 http://download.webmin.com/download/repository sarge Release [16.9 kB]
Get:8 http://download.webmin.com/download/repository sarge Release.gpg [173 B]
Get:9 http://download.webmin.com/download/repository sarge/contrib amd64 Packages [1,384 B]
Fetched 18.4 kB in 3s (7,296 B/s)
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
All packages are up to date.

Step 6: Once the repository is added, install the Webmin by using the following commands.

root@linuxhelp:~# sudo apt install webmin
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following additional packages will be installed:
  libauthen-pam-perl libio-pty-perl
The following NEW packages will be installed:
  libauthen-pam-perl libio-pty-perl webmin
0 upgraded, 3 newly installed, 0 to remove and 0 not upgraded.
Need to get 28.5 MB of archives.
After this operation, 304 MB of additional disk space will be used.
Do you want to continue? [Y/n] y

Get:1 http://deb.debian.org/debian bullseye/main amd64 libauthen-pam-perl amd64 0.16-3+b8 [27.5 kB]
Get:2 http://deb.debian.org/debian bullseye/main amd64 libio-pty-perl amd64 1:1.15-2 [37.0 kB]
Get:3 http://download.webmin.com/download/repository sarge/contrib amd64 webmin all 2.000 [28.4 MB]
Fetched 28.5 MB in 7s (4,176 kB/s)
Selecting previously unselected package libauthen-pam-perl.
(Reading database ... 161806 files and directories currently installed.)
Preparing to unpack .../libauthen-pam-perl_0.16-3+b8_amd64.deb ...
Unpacking libauthen-pam-perl (0.16-3+b8) ...
Selecting previously unselected package libio-pty-perl.
Preparing to unpack .../libio-pty-perl_1%3a1.15-2_amd64.deb ...
Unpacking libio-pty-perl (1:1.15-2) ...
Selecting previously unselected package webmin.
Preparing to unpack .../archives/webmin_2.000_all.deb ...
Unpacking webmin (2.000) ...
Setting up libio-pty-perl (1:1.15-2) ...
Setting up libauthen-pam-perl (0.16-3+b8) ...
Setting up webmin (2.000) ...
Processing triggers for man-db (2.9.4-2) ...
root@linuxhelp:~# apt install ufw
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done

ufw is already the newest version (0.36-7.1).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

root@linuxhelp:~# sudo ufw allow 10000
Rule added
Rule added (v6)

root@linuxhelp:~# sudo systemctl start webmin

root@linuxhelp:~# sudo systemctl status webmin
● webmin.service - Webmin server daemon
     Loaded: loaded (/lib/systemd/system/webmin.service; enabled; vendor preset: enabled)
     Active: active (running) since Sat 2022-09-24 23:04:43 IST; 33s ago
    Process: 112880 ExecStart=/usr/share/webmin/miniserv.pl /etc/webmin/miniserv.conf (code=exited, status=0/SUCCESS)
   Main PID: 112881 (miniserv.pl)
      Tasks: 1 (limit: 3450)
     Memory: 29.0M
        CPU: 428ms
     CGroup: /system.slice/webmin.service

             └─112881 /usr/bin/perl /usr/share/webmin/miniserv.pl /etc/webmin/miniserv.conf

Sep 24 23:04:41 linuxhelp systemd[1]: Starting Webmin server daemon...
Sep 24 23:04:41 linuxhelp perl[112880]: pam_unix(webmin:auth): authentication failure; logname= uid=0 euid=0 tty= ruser= rhost=  user=root
Sep 24 23:04:43 linuxhelp webmin[112880]: Webmin starting
Sep 24 23:04:43 linuxhelp systemd[1]: webmin.service: Can't open PID file /var/webmin/miniserv.pid (yet?) after start: Operation not permitted
Sep 24 23:04:43 linuxhelp systemd[1]: Started Webmin server daemon.