CentOS 8 add network bridge (br0) with nmcli command

How do I configure my CentOS 8 and add network bridge (br0) with the nmcli command? How can I create a Linux network bridge on CentOS Linux 8 server for KVM (Kernel-based Virtual Machine)?

A network bridge is nothing but a device that joins two local networks into one network. It works at the data link layer (layer 2 of the OSI model). Network bridges often used with virtualization software. For example, popular software such as KVM, LXD, or Docker users can configure bridges instead of NAT-based networking. The nmcli command-line tool can create a persistent bridge configuration without editing any files.** This page shows how to create a bridge interface using the Network Manager command-line tool called nmcli on CentOS 8 Enterprise Linux** .

Tutorial requirementsOperating system/appCentOS Linux 8 serverRoot privileges requiredYesDifficultyEasy (rss)Estimated completion time5mTable of contents

• » Adding network bridge
• » Prerequisite
• » Creating a Linux network bridge
• » Disable or enable STP
• » Set up static or DHCP based IP address
• » Enable br0 network bridge interface
• » Verification network bridge
• » Conclusion

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CentOS 8 add network bridge (br0) with nmcli command

How do I configure my CentOS 8 and add network bridge (br0) with the nmcli command? How can I create a Linux network bridge on CentOS Linux 8 server for KVM (Kernel-based Virtual Machine)?

A network bridge is nothing but a device that joins two local networks into one network. It works at the data link layer (layer 2 of the OSI model). Network bridges often used with virtualization software. For example, popular software such as KVM, LXD, or Docker users can configure bridges instead of NAT-based networking. The nmcli command-line tool can create a persistent bridge configuration without editing any files.** This page shows how to create a bridge interface using the Network Manager command-line tool called nmcli on CentOS 8 Enterprise Linux** .

Tutorial requirementsOperating system/appCentOS Linux 8 serverRoot privileges requiredYesDifficultyEasy (rss)Estimated completion time5mTable of contents

• » Adding network bridge
• » Prerequisite
• » Creating a Linux network bridge
• » Disable or enable STP
• » Set up static or DHCP based IP address
• » Enable br0 network bridge interface
• » Verification network bridge
• » Conclusion

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#[object object] #[object object] #[object object] #[object object] #neural networks

How To Install PyCharm on CentOS 7 and 8

PyCharm is an IDE (or Integrated Development Environment) for the Python programming language. It is a cross-platform development environment that is compatible with Windows, macOS, and Linux. It provides a tool that integrates code analysis, graphical debugging, unit testing, and also contains an integrated terminal that supports development on remote hosts and virtual machines.

PyCharm was created by JetBrains based on the IntelliJ IDEA platform. There are two main versions of PyCharm.

The PyCharm Community Edition – This version is used for development without the framework options and other features that are necessary for writing Enterprise solutions.
The PyCharm Professional Edition – This version is used to develop software for large projects where frameworks and additional libraries are needed. This version contains support for Scientific and Python development and supports HTML, JS, and SQL.
For successful developers, it is crucial to have excellent tools that lessen their workload and save time. Additionally, PyCharm utilizes various plugins and extensions, written by both IntelliJ IDEA and other third-party contributors to increase functionality. The Professional Edition has a free trial period during which users can familiarize themselves with it and its use or the open-source Community Edition which allows for continued free usage.

#centos #centos 7 #centos 8 #code analysis #cross platform

How to Install Security Updates on CentOS 8

Keeping your Linux system up-to-date is a very critical task, especially when it comes to installing security updates. This ensures that your system stays safe, stable, and keeps you on top of the latest security threats.

In this short and precise article, we will explain how to install security system updates on a CentOS 8 Linux system. We will show how to check for system updates (for all installed packages), updates for a specific package, or security updates only. We will also look at how to install updates either for a specific package, for all installed packages, or security updates only.

First, log into your system and open a terminal window, or if it is a remote system, access it via ssh. And before you move any further, take note of your the current kernel version on your system:

# uname -r

Check Current Kernel Version

Checking Security Updates for CentOS 8 Server

To check if there are any updates available, issue the following command on the command prompt. This command non-interactively checks whether there are any updates are available for all packages on your system.

# dnf check-update

Check CentOS 8 Updates

If you want, you can check updates for a specific package, provide the package name as shown.

# dnf check-update cockpit

Check Updates for Package

Checking Security Updates for Installed Software Packages

You can determine if there are security-related updates or notices available, using the following command. It will show a summary of security notices displaying the number of updates in each category. From the screenshot below, there is 1 security update available for us to install on the test system.

# dnf updateinfo

Check Notices for Security Updates

To show the actual number of security packages with updates for the system, run the command that follows. Although there is only 1 security update as indicated in the output of the previous command, the actual number of security packages is 3 because the packages are related to each other:

# dnf updateinfo list sec
OR
# dnf updateinfo list sec | awk '{print $3}'

#centos #security #centos tips #centos-8

How to Install OpenJDK 11 on CentOS 8

What is OpenJDK?

OpenJDk or Open Java Development Kit is a free, open-source framework of the Java Platform, Standard Edition (or Java SE). It contains the virtual machine, the Java Class Library, and the Java compiler. The difference between the Oracle OpenJDK and Oracle JDK is that OpenJDK is a source code reference point for the open-source model. Simultaneously, the Oracle JDK is a continuation or advanced model of the OpenJDK, which is not open source and requires a license to use.

In this article, we will be installing OpenJDK on Centos 8.

#tutorials #alternatives #centos #centos 8 #configuration #dnf #frameworks #java #java development kit #java ee #java environment variables #java framework #java jdk #java jre #java platform #java sdk #java se #jdk #jre #open java development kit #open source #openjdk #openjdk 11 #openjdk 8 #openjdk runtime environment

Laravel 8 Tutorial for Beginners

Hello everyone! I just updated this tutorial for Laravel 8. In this tutorial, we’ll go through the basics of the Laravel framework by building a simple blogging system. Note that this tutorial is only for beginners who are interested in web development but don’t know where to start. Check it out if you are interested: Laravel Tutorial For Beginners

Laravel is a very powerful framework that follows the MVC structure. It is designed for web developers who need a simple, elegant yet powerful toolkit to build a fully-featured website.

#laravel 8 tutorial #laravel 8 tutorial crud #laravel 8 tutorial point #laravel 8 auth tutorial #laravel 8 project example #laravel 8 tutorial for beginners