September 26, 2021
How to install Cockpit on CentOS 8

How To Install Cockpit Management Tools on CentOS 8

On this article we will discuss how to install the latest version of Cockpit, a web-based graphical interface server management tools on CentOS 8 operating system.

Introduction

Cockpit is a free and open-source web-based server management tools. By using Cockpit, Linux users or System Administrators can perform number of system tasks on the server, such like : system monitoring, administering storage, usage networks monitoring, logs inspection, services management, managing containers and so on. Cockpit uses APIs that already exist on the system. It doesn’t reinvent subsystems or add a layer of its own tooling. By default, Cockpit uses our own system’s normal user logins and privileges. Network-wide logins are also supported through single-sign-on and other authentication techniques. On this article we will show you how to install Cockpit on Centos 8 Operating system.



Cockpit Installation on CentOS 8

On this article we will use Cockpit software version 238.2, while the last version is 248.2 has been available on Cockpit official website which was released on 7 July 2021. Before Cockpit installation process begins, there are several prerequisites that must be met, namely:

  • A CentOS 8 Server with sufficient disk space
  • An account with sudo or root access to run privileged commands.
  • CentOS utility for installing new package/software (such as : dnf, yum).

The installation process will be consist of several stages as explained below.

  1. Updating CentOS sytem
  2. Install Cockpit
  3. Enable Cockpit system service
  4. Testing Cockpit

1. Updating CentOS 8 System

At the first stage, we will update our CentOS 8 system. By updating the system, we will have our server with all the latest stable releases from CentOS Repository. This task can be done by submitting command line : sudo dnf -y update.

[ramans@otodiginet ~]$ sudo dnf -y update
[sudo] password for ramans: 
CentOS Linux 8 - AppStream                                                              3.3 kB/s | 4.3 kB     00:01    
CentOS Linux 8 - AppStream                                                              1.5 MB/s | 8.2 MB     00:05    
CentOS Linux 8 - BaseOS                                                                 4.7 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - BaseOS                                                                 843 kB/s | 4.5 MB     00:05    
CentOS Linux 8 - Extras                                                                 2.4 kB/s | 1.5 kB     00:00    
MariaDB Server                                                                          1.9 kB/s | 3.4 kB     00:01    
MariaDB MaxScale                                                                        1.2 kB/s | 2.5 kB     00:02    
MariaDB MaxScale                                                                        1.6 kB/s | 7.1 kB     00:04    
MariaDB Tools                                                                           1.9 kB/s | 2.9 kB     00:01    
Dependencies resolved.
========================================================================================================================
 Package                                     Arch        Version                                Repository         Size
========================================================================================================================
Installing:
 kernel                                      x86_64      4.18.0-305.10.2.el8_4                  baseos            5.9 M
 kernel-core                                 x86_64      4.18.0-305.10.2.el8_4                  baseos             36 M
 kernel-devel                                x86_64      4.18.0-305.10.2.el8_4                  baseos             18 M
 kernel-modules                              x86_64      4.18.0-305.10.2.el8_4                  baseos             28 M
Upgrading:



CentOS 8 update system
CentOS 8 update system

2. Install Cockpit Package

After our CentOS system has been updated to the new last stable repositories, then we will install Cockpit software by executing command line : sudo dnf install cockpit.

ramans@otodiginet ~]$ sudo dnf install cockpit
Last metadata expiration check: 1:00:23 ago on Wed 28 Jul 2021 12:25:56 AM PDT.
Dependencies resolved.
========================================================================================================================
 Package                             Architecture        Version                           Repository              Size
========================================================================================================================
Installing:
 cockpit                             x86_64              238.2-1.el8                       baseos                  76 k
Installing dependencies:
 clevis                              x86_64              15-1.el8                          appstream               57 k
 cockpit-bridge                      x86_64              238.2-1.el8                       baseos                 535 k
 cockpit-system                      noarch              238.2-1.el8                       baseos                 3.4 M
 cockpit-ws                          x86_64              238.2-1.el8                       baseos                 1.3 M
 jose                                x86_64              10-2.el8                          appstream               58 k
Installing Cockpit monitoring tools on CentOS 8
Installing Cockpit monitoring tools on CentOS 8

3. Enable Cockpit system service

After Cockpit installation was completed done, then we will enable and start its service to be available and running on the system. For this purpose, we will hit the command line : sudo systemctl enable --now cockpit.socket and sudo systemctl start cockpit then we verify its service by submitting command line : sudo systemctl status cockpit, as shown below.

[ramans@otodiginet ~]$ sudo systemctl enable --now cockpit.socket
Created symlink /etc/systemd/system/sockets.target.wants/cockpit.socket → /usr/lib/systemd/system/cockpit.socket.
[ramans@otodiginet ~]$ sudo systemctl status cockpit
● cockpit.service - Cockpit Web Service
   Loaded: loaded (/usr/lib/systemd/system/cockpit.service; static; vendor preset: disabled)
   Active: inactive (dead)
     Docs: man:cockpit-ws(8)
[ramans@otodiginet ~]$ sudo systemctl start cockpit
[ramans@otodiginet ~]$ sudo systemctl status cockpit
● cockpit.service - Cockpit Web Service
   Loaded: loaded (/usr/lib/systemd/system/cockpit.service; static; vendor preset: disabled)
   Active: active (running) since Wed 2021-07-28 00:52:28 PDT; 4s ago
     Docs: man:cockpit-ws(8)
  Process: 87132 ExecStartPre=/usr/sbin/remotectl certificate --ensure --user=root --group=cockpit-ws --selinux-type=et>
 Main PID: 87138 (cockpit-tls)
    Tasks: 1 (limit: 23535)
   Memory: 940.0K
   CGroup: /system.slice/cockpit.service
           └─87138 /usr/libexec/cockpit-tls

Jul 28 00:52:24 otodiginet systemd[1]: Starting Cockpit Web Service...
Jul 28 00:52:28 otodiginet systemd[1]: Started Cockpit Web Service.
lines 1-13/13 (END)...skipping...
Enable and starting cockpit service
Enable and starting Cockpit service

4. Testing Cockpit Application Tools

At this point, we will test Cockpit application tools by using web browser and supplying system user and its password to login to the application. The default URL of Cockpt is :https://[hosted_ip_address]:9090/. On my article we will user url : https://otodiginet:9090/.

Cockpit application tools Front page
Cockpit application tools Front page



Cockpit view | System –> Storage

We can also add some additional features to be managed on our server. For this purpose we can easily add it to our Cockpit application, as shown below.

Conclusion

So far, on this article we have shown you how to install Cockpit, a server management tools on CentOS 8 operating sytem. I hope this article can be useful for those who need it.

Share this article via :

Leave a Reply

Your email address will not be published. Required fields are marked *