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Linux
Introduction to IPTables
This guide is meant as an introduction to iptables and covers basic packet filtering using this tool on Centos 7. The goal is to learn to work with some basic options so you can adapt them to your particular needs. For this reason we will…
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How to Use /proc/sys and sysctl to modify and set kernel runtime parameters in RHEL7
When you want to improve the performance or the characteristics of your server, you need to set the kernel runtime parameters. In order to do this, you’ve got three ways: through the /proc filesystem, with the sysctl command,…
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30+ Commands to understand Firewalld in RHEL7 environment
Firewalld provides a dynamically managed firewall with support for network/firewall zones that define the trust level of network connections or interfaces. It has support for IPv4, IPv6 firewall settings, ethernet bridges, and IP sets.…
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How to Install Jenkins 2 on CentOS / RHEL 7
Jenkins is a Java-based, open-source automation server. Jenkins is used to automate all sorts of tasks related to building, testing and delivering or deploying software. Jenkins is a fork of Project Hudson and it is maintained by the…
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How to Install Ansible and Use Playbooks on CentOS 7
Ansible is an open-source software provisioning, configuration management, and application-deployment tool. Ansible uses its own declarative language, based on YAML (Yet Another Markup Language), to describe system configurations. The…
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How to Install CentOS 8
CentOS 8 has been released on September 24th, 2019. You now may be looking to try the world’s best opensource enterprise operating system. CentOS 8 is derived from the source of Red Hat Enterprise Linux 8 and uses Linux kernel 4.18.…
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How to Install Asterisk on CentOS 7
Asterisk is an open source framework used for building communication applications. You can use it to turn a local computer or server to communication server. It is used to power IP PBX systems, VoIP gateways, conference servers and other…
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Create a Kubernetes Cluster Using Kubeadm on Ubuntu 18.04
Kubernetes is a container orchestration system that manages containers at scale. Initially developed by Google based on its experience running containers in production, Kubernetes is open source and actively developed by a community around…
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Install EasyEngine to create SSL enabled WordPress blogs
One of the most common uses for a VPS is hosting a WordPress-based site. While we covered the details of setting up both a LEMP stack and WordPress on top of that, some will prefer using a more user-friendly script to make the job a little…
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Install PHP 7 on CentOS 7 / RHEL 7 & CentOS 6 / RHEL 6
PHP is a widely-used open-source programming language for web development created by Rasmus Lerdorf. It is an HTML-embedded scripting language for creating dynamic web sites. CentOS 7/6 comes with PHP 5.x by default which is already the…
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