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Centos 7 Articles
Found 39 articles
Install and Configure Caching-Only DNS Server in RHEL/CentOS 7
DNS (Domain Name System) plays a crucial role in translating domain names into IP addresses, allowing users to access websites using human-readable URLs. To enhance DNS performance and reduce network latency, implementing a caching-only DNS server can significantly improve the speed and efficiency of DNS lookups. In this article, we will guide you through the process of installing and configuring a caching-only DNS server in RHEL/CentOS 7. Prerequisites Before proceeding, ensure that you have the following − A server running RHEL/CentOS 7. Root or sudo access to the server. Basic knowledge of the Linux command line. ...
Read MoreInstall Glances, InfluxDB and Grafana to Monitor CentOS 7
Monitoring the performance and health of your CentOS 7 server is essential for maintaining its stability and optimizing its resources. In this article, we will explore how to install and configure Glances, InfluxDB, and Grafana—a powerful trio of monitoring tools—to gather system metrics, store them in a time-series database, and visualize them in real-time dashboards. Monitoring Stack Architecture Glances Data Collection InfluxDB Data Storage Grafana Visualization ...
Read MoreHow to Set or Change Hostname in CentOS 7?
The hostname plays a crucial role in identifying a server on a network and generating the fully qualified domain name (FQDN) for the system. In CentOS 7, changing the hostname involves modifying key system files and applying the changes properly. This process requires updating the /etc/hostname file and the /etc/hosts file to ensure the system recognizes the new identifier. After making these changes, a system reboot ensures they take effect across all services and networking components. Step 1 − Check the Current Hostname Before making changes, verify the current hostname by opening a terminal and running the ...
Read MoreSecure ProFTPD Connections Using TLS/SSL Protocol on RHEL/CentOS 7
Secure ProFTPD Connections Using TLS/SSL Protocol on RHEL/CentOS 7 involves implementing Transport Layer Security (TLS) and Secure Sockets Layer (SSL) encryption for secure data transmission over ProFTPD, a popular FTP server program. By configuring ProFTPD to use TLS or SSL, communication between the FTP client and server is encrypted, ensuring confidentiality and integrity of the data being exchanged. This level of security protects sensitive information, such as login credentials, from being intercepted or modified by unauthorized parties. TLS/SSL certificates are used to establish secure connections and authenticate the server, building trust between the client and the FTP server. Methods ...
Read MoreSetting up a ëPXE Network Boot Server\' for Multiple Linux Distribution Installations in RHEL/CentOS 7
PXE (Preboot eXecution Environment) Network Boot Server enables client machines to boot over the network and install Linux distributions without physical installation media. In RHEL/CentOS 7, this requires setting up DHCP, TFTP, and Syslinux services to serve boot files and installation images to client systems. The setup involves installing required packages (DHCP, TFTP, Syslinux), configuring the DHCP server to provide IP addresses and boot parameters, setting up the TFTP server to serve boot files, and creating bootloader menus for multiple Linux distributions. Methods Used Manual Configuration − Step-by-step setup of individual services Automated Tools − Using ...
Read MoreSetting Up NTP (Network Time Protocol) Server in RHEL/CentOS 7
Network Time Protocol (NTP) is a networking protocol used to synchronize the clocks of computers over a network. Setting up an NTP server in RHEL/CentOS 7 allows you to provide accurate time synchronization to client devices across your network infrastructure. Prerequisites Before configuring the NTP server, ensure you have root privileges and network connectivity to external NTP sources. The server should also have proper DNS resolution configured for accessing public NTP servers. Install NTP Package First, install the NTP package using the YUM package manager. This provides the necessary software components to run an NTP server ...
Read MoreHow to Install Enable OpenSSH on CentOS 7
If you're looking to enable OpenSSH on CentOS 7, you've come to the right place. In this article, we'll take a look at the steps you need to follow to install and enable OpenSSH on your CentOS 7 machine. We'll also explore the benefits of using OpenSSH and how to configure it securely. What is OpenSSH? OpenSSH is a secure shell protocol used to establish a secure connection between two computers over a network. It's an open-source version of the Secure Shell (SSH) protocol, which is widely used to provide secure remote access to servers and other network ...
Read MoreHow to Install and Configure Nginx on CentOS 7?
Nginx is a popular web server that is known for its high performance, scalability, and low resource usage. It is commonly used as a reverse proxy, load balancer, and HTTP cache. In this article, we will discuss how to install and configure Nginx on CentOS 7. Step 1: Update System Before installing any packages, it's essential to update your system to the latest version. Run the following command − sudo yum update Step 2: Install Nginx Once the system is updated, we can proceed with the installation of Nginx. Install Nginx using the ...
Read MoreHow to install the latest version of Git on CentOS 7.x/6.x?
Installing the latest version of Git on CentOS can be accomplished through multiple approaches. CentOS repositories often contain older versions of Git, so these methods help you install more recent versions with enhanced features and security updates. Approach 1: Using IUS Community Repository The IUS Community Repository provides updated packages for Enterprise Linux distributions. This is the most straightforward method for getting a recent Git version. Commands yum install epel-release yum remove git rpm -U https://centos7.iuscommunity.org/ius-release.rpm yum install git2u git --version Output immukul@192 lib % git --version git version 2.29.2 ...
Read MoreHow To Add User to Sudoers & Add User to Sudo Group on CentOS 7
If you're new to CentOS 7, one of the first things you'll want to do is learn how to add users to the sudoers file and the sudo group. This will give them elevated privileges and allow them to run commands with root-level permissions. In this article, we'll walk you through the process step-by-step. What is Sudo? Before we get started, let's talk about what sudo is and why it's important. Sudo stands for "superuser do" and is a command that allows users to perform tasks with administrative permissions. By default, only the root user has these permissions ...
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