Linux

How to download Redhat Certification

Installation, Linux, Openshift, Redhat /

To Download the Redhat Certification, Follow the below steps : Step 1: Login to redhat.com Step 2 : Click on Certifications Step 3 : Click on Privacy Settings Under I want to be visible in search , click on Yes Step 4 : Login to credly.com If you do not have an account , create one Step 5 : Find your badge in the dashboard It may take even 24 hours to reflect in Dashboard , after enabling the option in redhat.com privacy settings

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Basic Linux Commands

Linux /

BASIC LINUX COMMANDS Now to understand about the basic linux commands, first you need to know what Linux is all About!! WHAT IS LINUX? When using Windows — its high degree of compatibility is fine for every day use for many people. Since Windows is a proprietary operating system, developers and user more or less have to work with a relatively closed software environment with certain restrictions . Linux on the other hand has a completely open source kernel -The central part of the operating system that links your hardware with applications that can be used freely for tons of use case scenario. These different versions of Linux are commonly called as distributions or distros which provides different stacks of software tools and desktop environments all of which are tied to the Linux Kernel that combine to form a complete operating system. These distros can range from anything — Ubuntu or Mint which are popular desktop distributions often used as alternatives to windows . Linux is focused on security and stability,which as made it extremely popular for servers and other critical applications, whereas Windows is focused on ease of use. So now lets look into some of the basics Commands in Linux

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The Importance Of Learning DevOps With Red Hat Linux

317 Comments / Devops, Linux /

INTRODUCTION: In today’s fast-paced and highly competitive technology landscape, DevOps has emerged as a crucial methodology for streamlining software development and operations. At the heart of DevOps lies the need for efficient and reliable infrastructure, and Red Hat Linux has become synonymous with stability, security, and scalability. In this blog, we will explore the significance of learning DevOps with Red Hat Linux and how this powerful combination can propel your career to new heights. Unleashing Creativity: The Symphony of DevOps with Red Hat Linux Imagine a symphony orchestra, where DevOps represents the harmonious collaboration of musicians, and Red Hat Linux serves as the revered conductor, guiding each note and inspiring awe-inspiring performances. Join us on this creative journey as we explore the captivating importance of learning DevOps with Red Hat Linux, through the lens of an orchestra. The Maestro’s Baton: Industry-Recognized Standard: In our orchestra, Red Hat Linux assumes the role of the esteemed maestro. Just as renowned conductors are revered for their expertise, Red Hat Linux stands tall as an industry-recognized standard in the technology landscape. Learning DevOps with Red Hat Linux means embracing a language that resonates with organizations worldwide, much like a conductor conducting a globally acclaimed symphony. Dancing in Synchronization: Seamless Integration and Automation: Visualize the dancers gracefully moving across the stage, perfectly synchronized to the music. In our orchestra, Red Hat Linux provides the platform for seamless integration and automation, while DevOps represents the skilled choreographers. The tools of Red Hat Linux, like Ansible, Kubernetes, and OpenShift, seamlessly integrate and automate processes, allowing the orchestra of DevOps to execute complex routines flawlessly. For example, imagine orchestrating the deployment of a complex web application. Red Hat Linux, as the conductor, uses Ansible to automate the provisioning of servers, Kubernetes to manage container orchestration, and OpenShift to facilitate continuous deployment. The result is a synchronized performance, with the application seamlessly delivered to the audience. A Harmonious Ensemble: Enhanced Security and Stability: Every great orchestra requires security and stability to deliver a captivating performance. In our symphony, Red Hat Linux plays a crucial role in providing enhanced security features and rock-solid stability. Through DevOps practices, the orchestra ensures that security is tightly woven into the fabric of every process and that stability resonates in every note. The combined power of Red Hat Linux and DevOps brings harmony and peace of mind to the performance. Scaling Crescendos: Scalability and Flexibility: As the orchestra evolves and takes center stage, the need for scalability and flexibility becomes apparent. Red Hat Linux serves as the foundation, allowing the orchestra of DevOps to scale their operations and adapt to changing demands. Through orchestration tools like Kubernetes and OpenShift, the orchestra seamlessly scales its infrastructure, accommodating growing audiences and evolving requirements. With Red Hat Linux as their ally, the orchestra achieves symphonic heights of flexibility and scalability. The Overture of Opportunity: As the symphony concludes, a standing ovation awaits the performers. Learning DevOps with Red Hat Linux opens doors to a world of career opportunities. Just as renowned conductors are sought after in the music industry, professionals with DevOps skills and expertise in Red Hat Linux are highly sought after by organizations. By mastering this symphony, you become the conductor of your career, leading teams, and orchestrating success. CONCLUSION: In the grand theater of technology, the symphony of DevOps with Red Hat Linux captivates and inspires. Just like a mesmerizing orchestra, where each musician plays their part to perfection, learning DevOps with Red Hat Linux equips you to create breathtaking performances in the world of technology. So, take your place on the stage, embrace the power of Red Hat Linux as the maestro, and let your skills as a DevOps practitioner harmonize the elements of innovation, efficiency, and creativity, creating a symphony that resonates with the world.

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Why Linux?

15 Comments / Linux /

Every programmer no matter the domain would have a basic knowledge on Linux. So when we talk about Freshers first step into Programming then it would be Linux!! So now the most important question is why Linux knowledge, and if we want to skip that ,then you need to know what you are missing. To know why you need Linux take a look at the below points , Better understanding of the Operating System Every programmer needs to deal with Command Line , and Linux helps a lot in that What every application you have developed it has to be deployed on a Linux Platform Git knowledge is required to make sure that the entire project is under a version controlling system, and not just for pushing the code to github. Hence Linux plays a role in this too So , now lets talk about Linux. Linux is a Kernel (It interacts with your Hardware). When we put some softwares in the kernel then it becomes a whole Operating System. Lets learn few words related to Linux , Linux was highly inspired by MINIX which was inspired by UNIX. GNU General Public License — Here modification and re-distribution of software is allowed. This is one of the reason of wide usage of Linux Distros — Specific group of Software — updation of software, package repository and release of new packages, companies launch their own distribution of Linux AKA Distros. Some common Companies are Arch, Debian , Redhat, Slackware, others. Among all Distros Redhat plays an important role — Redhat Linux Debian — Mint, Ubuntu , Kali, Parrot, Deepin Redhat — CentOS, Fedora Bash Shell — A shell is basically the Black screen/Terminal / Command Promp that you can see in Linux. When we write a command in the shell , what is going to come up from it is heavily dependent on the shell used. One such is Bash Shell

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What Is Opensource ?

4 Comments / Interview, Linux /

Opensource Let’s talk about opensource today!! The idea behind opensource is that everything should be available for anybody to go ahead and use and modify. That means it is build on a collaborative approach to problem solving. If you see something wrong you don’t have to just report an issue and hope someone fixes it, you can go straight in and do it yourself. So now if you have a piece of software you can shape it to ensure that your goals are met. Browsers, medias , operating systems- its everywhere. Most of the architecture of the internet itself runs in opensource platform. Many huge companies depend on opensource and companies hire developers to use and contribute to opensource software because it accelerates their works. These companies then contribute back to a wider communities and encourage others to do so as well. WHY OPENSOURCE? Lower software cost High quality software Abundant support No vendor Lock-in Scaling and consolidation and many more SECURITY Now you are wondering about its security. If anyone can poke around the code then presumable that makes it insecure, but that’s not it!!! This transparency makes is exactly what makes most opensource software much more secure than other kind. Instead of blindly trusting the software that you are using is secure, you can actually check that it is and do something about it if its not properly secured. FREE Now as you can understand everyone can make their contributions to the code, so does that mean you get you license fee? Nope, because there is no license fee!! With some notable exceptions opensource software is free to use and secure. This is beyond money, because the real value in opensource software comes from a community surrounding it- usually made up of talented and passionate people contributing for any number of reasons. ADVANTAGES OF OPENSOURCE Security Affordability Transparent Interoperable on multiple platforms Flexible due to customization Localization EXAMPLES Mozilla Firefox VLC Media Player Linux PHP Python Apache Web Server and many more

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Dreamworks With Linux: A New Frontier

67 Comments / Linux /

DreamWorks Animation, the famous animation studio, used Linux as the operating system for its animation production pipeline. INTRODUCING DREAMWORKS AND LINUX Dreamworks is a leading animation studio that creates content for film, television, and online platforms. With its cutting-edge technology and award-winning productions, Dreamworks has become a leader in the industry. Linux is an open-source operating system that is highly customizable and secure. It is used by many companies to power their websites, applications, and other services. DREAMWORKS AND LINUX COLLABORATION Dreamworks has partnered with Linux to create a powerful platform for their content creation. By leveraging the open-source nature of Linux, Dreamworks is able to create a secure and cost-effective platform for their animation production. Linux provides Dreamworks with the security and stability they need to create their content. The platform is highly customizable, allowing Dreamworks to tailor it to fit their needs. DREAMWORKS AND LINUX IN ACTION Dreamworks has already begun to take advantage of the power of Linux. The studio has used Linux to create award-winning films such as Kung Fu Panda and Shrek. Dreamworks is also using Linux to power their online streaming services, allowing viewers to watch their content anywhere. Linux has also been used to create a secure platform for Dreamworks’s animation production. This allows Dreamworks to create content without the need to purchase expensive licenses or software. This helps Dreamworks save money and time, while still having access to the latest technology. By using a custom-built distribution of Linux called DreamWorks Pictures Desktop (DPD), the studio was able to efficiently run its animation software and render animations. The use of Linux in the animation industry has become a standard, and many other animation studios have adopted similar systems. The stability and scalability of Linux were critical factors for DreamWorks Animation, as the demands of animation production require a reliable and efficient platform. The use of Linux by DreamWorks Animation highlights the versatility and power of this open-source operating system for a variety of industries and applications. For more such technical topics follow us — cubensquare.com

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Walt Disney and Redhat Linux

18 Comments / Linux, Redhat /

Walt Disney The Walt Disney Company is a global entertainment company that was founded in 1923 by Walt Disney and his brother Roy. It is best known for its iconic characters such as Mickey Mouse, Donald Duck, and Goofy, as well as its animated films and theme parks. Today, the company is a multinational conglomerate with interests in film, television, theme parks, and more, and is one of the world’s largest media companies Redhat Linux Red Hat Linux is a popular distribution of the Linux operating system. Red Hat Linux is known for its stability, security, and scalability, making it a popular choice for enterprise environments. It also offers enterprise-level support and services, including updates and patches Walt Disney and Redhat Linux Red Hat Linux in the entertainment industry is its use by the Walt Disney Company. The Walt Disney Company has a long history of using open-source software, including Linux, to power its animation and special effects workflows. In particular, the Walt Disney Animation Studios (WDAS) has been using Linux for over a decade. The studio’s production pipeline relies heavily on Linux-based tools such as Autodesk Maya, Nuke, and Houdini for tasks such as modeling, animation, and compositing. To manage its Linux-based infrastructure, WDAS turned to Red Hat Enterprise Linux. The use of Red Hat Enterprise Linux allowed the studio to standardize its infrastructure, improve security, and increase efficiency. It also enabled WDAS to take advantage of Red Hat’s enterprise support and services, which helped the studio to quickly resolve any issues that arose. In addition, Red Hat’s open-source philosophy aligned with WDAS’s culture of collaboration and innovation. The use of open-source software allowed WDAS to customize and optimize its production pipeline to meet its specific needs, while also contributing back to the open-source community. Overall, the use of Red Hat Linux by the Walt Disney Company highlights the benefits of open-source software in the entertainment industry. It demonstrates how open-source solutions can provide a cost-effective and customizable platform for managing critical workloads such as animation and special effects, while also enabling collaboration and innovation.

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CIS Benchmarks for Linux Systems

3,673 Comments / Linux, Redhat /

Objective: Below are the standard Guidelines as per the CIS Benchmarking standard to adopt a secure Configuration posture for Linux Systems running on x86 and x64 platforms. This benchmark is intended for system and application administrators, security specialists, auditors, helpdesk, and platform deployment personnel who plan to develop, deploy, assess, or secure solutions that incorporate Linux on the x86 or x64 platform.   About CIS Benchmarks: CIS Benchmarks are a set of guidelines and best practices for securing IT systems, networks, and infrastructure. They are developed by the Center for Internet Security (CIS), a global non-profit organization. CIS Benchmarks are free to the public and are used by thousands of businesses. Note: It is advisable to verify root users’ path integrity and the integrity of any programs being run prior to the execution of commands and scripts. –> Disable unused filesystems Ensure mounting of cramfs filesystems is disabled Ensure mounting of freevxfs filesystems is disabled Ensure mounting of jffs2 filesystems is disabled Ensure mounting of hfs filesystems is disabled Ensure mounting of hfsplus filesystems is disabled Ensure mounting of squashfs filesystems is disabled Ensure mounting of udf filesystems is disabled Ensure mounting of FAT filesystems is limited Ensure /tmp is configured Ensure nodev option set on /tmp partition Ensure nosuid option set on /tmp partition Ensure noexec option set on /tmp partition Ensure separate partition exists for /var Ensure separate partition exists for /var/tmp Ensure nodev option set on /var/tmp partition Ensure nosuid option set on /var/tmp partition Ensure noexec option set on /var/tmp partition Ensure separate partition exists for /var/log Ensure separate partition exists for /var/log/audit Ensure separate partition exists for /home Ensure nodev option set on /home partition Ensure nodev option set on /dev/shm partition Ensure nosuid option set on /dev/shm partition Ensure noexec option set on /dev/shm partition Ensure nodev option set on removable media partitions Ensure nosuid option set on removable media partitions Ensure noexec option set on removable media partitions Ensure sticky bit is set on all world-writable directories Disable Automounting Disable USB Storage  –> Configure Software Updates Ensure package manager repositories are configured Ensure GPG keys are configured Filesystem Integrity Checking Ensure AIDE is installed Ensure filesystem integrity is regularly checked Secure Boot Settings Ensure permissions on bootloader config are configured Ensure bootloader password is set Ensure authentication required for single user mode Ensure interactive boot is not enabled  –> Additional Process Hardening Ensure core dumps are restricted Ensure XD/NX support is enabled Ensure address space layout randomization (ASLR) is enabled Ensure prelink is disabled Mandatory Access Control Ensure login and logout events are collected Ensure session initiation information is collected Ensure discretionary access control permission modification events are collected Ensure unsuccessful unauthorized file access attempts are collected Ensure use of privileged commands is collected Ensure successful file system mounts are collected Ensure file deletion events by users are collected Ensure changes to system administration scope (sudoers) is collected Ensure system administrator actions (sudolog) are collected Ensure kernel module loading and unloading is collected Ensure the audit configuration is immutable  –>Configure Logging Configure rsyslog Ensure rsyslog is installed Ensure rsyslog Service is enabled Ensure logging is configured Ensure rsyslog default file permissions configured Ensure rsyslog is configured to send logs to a remote log host Ensure remote rsyslog messages are only accepted on designated log hosts.  –>Configure journald Ensure journald is configured to send logs to rsyslog Ensure journald is configured to compress large log files Ensure journald is configured to write logfiles to persistent disk Ensure permissions on all logfiles are configured Ensurelogrotate is configured Access, Authentication and Authorization  –> Configure cron Ensure cron daemon is enabled Ensure permissions on /etc/crontab are configured Ensure permissions on /etc/cron.hourly are configured Ensure permissions on /etc/cron.daily are configured Ensure permissions on /etc/cron.weekly are configured Ensure permissions on /etc/cron.monthly are configured Ensure permissions on /etc/cron.d are configured Ensure at/cron is restricted to authorized users  –> SSH Server Configuration Ensure permissions on /etc/ssh/sshd_config are configured Ensure permissions on SSH private host key files are configured Ensure permissions on SSH public host key files are configured Ensure SSH Protocol is set to 2 Ensure SSH LogLevel is appropriate Ensure SSH X11 forwarding is disabled Ensure SSH MaxAuthTries is set to 4 or less Ensure SSH IgnoreRhosts is enabled Ensure SSH HostbasedAuthentication is disabled Ensure SSH root login is disabled Ensure SSH PermitEmptyPasswords is disabled Ensure SSH PermitUserEnvironment is disabled Ensure only strong Ciphers are used Ensure only strong MAC algorithms are used Ensure only strong Key Exchange algorithms are used Ensure SSH Idle Timeout Interval is configured Ensure SSH LoginGraceTime is set to one minute or less Ensure SSH access is limited Ensure SSH warning banner is configured Ensure SSH PAM is enabled Ensure SSH AllowTcpForwarding is disabled Ensure SSH MaxStartups is configured Ensure SSH MaxSessions is set to 4 or less –> Configure PAM Ensure password creation requirements are configured Ensure lockout for failed password attempts is configured Ensure password reuse is limited Ensure password hashing algorithm is SHA-512 –> User Accounts and Environment –> Set Shadow Password Suite Parameters Ensure password expiration is 365 days or less Ensure minimum days between password changes is 7 or more Ensure password expiration warning days is 7 or more Ensure inactive password lock is 30 days or less Ensure all users last password change date is in the past Ensure system accounts are secured Ensure default group for the root account is GID 0 Ensure default user umask is 027 or more restrictive Ensure default user shell timeout is 900 seconds or less Ensure root login is restricted to system console Ensure access to the su command is restricted –> System Maintenance System File Permissions Audit system file permissions Ensure permissions on /etc/passwd are configured Ensure permissions on /etc/shadow are configured Ensure permissions on /etc/group are configured Ensure permissions on /etc/gshadow are configured Ensure permissions on /etc/passwd-are configured Ensure permissions on /etc/shadow-are configured Ensure permissions on /etc/group-are configured Ensure permissions on /etc/gshadow-are configured Ensure no world writable files exist

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