Experts have hands-on practice and skills to resolve system issues. Daily, working and doing regular operations on the system, they get expertise. Even they understand other system processes for which they have theoretical knowledge. The technical staff of most enterprises is involved in configuring application servers, networks, and system security.

Learning each command with all its parameters needs a lot of practice, and no one is a complete master. Most Linux commands we forget as they do not come in use over a while.

When an expert encounters an issue, they start searching for information online and browsing technical forums. For almost 90% of such, they have help documents, instructions, and FAQs. The 10% depends on their ability or by asking others about the resolution process. The technical experts, senior operation and maintenance engineers, or system architects keep themselves updated with highly comprehensive knowledge of programming language and cluster & distributed architecture.

The Linux distros come with minimum requirements, recommended configurations, and installation options (such as a graphical interface or character interface). The organizations may have different setup planning for hosting servers. Administrators use the Kickstart tool for unattended Linux system installation. They create ‘ks.cfg‘ response file through various parameters or settings that need manual intervention in the typical installation process.

CHANGE THE PORT OF THE SERVER

vi /etc/ssh/sshd_config

change #Port 22

to Port 8022

/etc/init.d/sshd restart

CREATING DOMAIN ENTRY

vi /etc/named.conf

cd /var/named/

CHECKING ERROR LOGS

tail -f /usr/local/apache/logs/error_log

• Installation On Demand: Install only the required package for maximum system efficiency and system safety. As excess software packages not only occupy disk space but also bring potential security risks to the server. Do not install any third-party package until verified.
• Independent Partitions to Applications: Recommended to assign individual partitions to applications. So that even if any partition gets destroyed, it will not affect the data of others and can minimize the loss caused by system crashes.
• Root Password: The root password must contain a mix of uppercase-lowercase letters, numbers, and special characters. Thus, making it secure against dictionary attacks.
• Avoid logging into the system directly with the ROOT account.
• Regularly update the system to fix lags or bugs.

Linux To Build Cloud Computing

According to the Linux Foundation’s research, almost 86% of enterprises have used Linux to build cloud computing and big data platforms.

Enterprise-level applications require high reliability and high stability on the system platform. Mostly RHEL commercial Linux distribution and non-commercial release Centos are the best choices.

Red Hat provides system technical support and provides free system upgrades. For the same, enterprises purchase commercial authorization and consulting services.

CentOS does not provide commercial support, hence recommended to companies having the corresponding technical strength.

Linux The Backbone Of The Server Operating System

• Free & open-source software UNIX-like operating system under The GNU/GPL General Public License. Its entire source code is available for free use, modification and redistribution. It occupied maximum market shares in the server operating system market structure. Also, maintained rapid growth in key areas like finance, government, agriculture, transportation, web hosting, IT industry, and telecommunications.
• It occupies almost 75% market share in the server field.
• In 1991 Linus Torvalds released the Linux Kernel. After that user-space applications got added like GUI components and many other utilities.
• Red Hat Linux commercialized its tools to be sold for enterprises looking for a database administration system.
• In addition, considering the rapid growth of Linux and the support of relevant national policies in different countries, Linux server products are bound to impact the larger server market.