System Package Maintenance Maintaining an up-to-date system is critical for security and stability. Use the package manager to synchronize repositories and apply pending updates: sudo yum update -y Network Interface Configuration To ensure consistent connectivity, you may need to configure a static...
Overview of YUM ======== YUM, which stands for Yellow dog Updater, Modified, is an RPM package manager. It automatically downloads and installs RPM packages from specified servers, handles dependencies between packages, and installs all required packages in one go without the need for manual downlo...
Note: The multiple IP addresses must be in the same subnet to avoid multi-gateway issues. For example, if the subnet is 192.168.1.0/24 with gateway 192.168.1.1, you can assign IP addresses like 192.168.1.2 through 192.168.1.254. To configure multiple IP addresses on a single network interface in Cen...
Prerequisites A registered domain name (e.g., example.com) with an A record pointing to your server's public IP. A VPS with a public IP (recommend 4 Mbps bandwidth or higher). A file transfer tool like FileZilla or SCP. Root access to the server. Step 1: Install Dependencies First, update the system...
Overview of the Three Essential Tools grep: Filters and searches for specific patterns in text. sed: Modifies and replaces content in files, particularly effective for line-based operations. awk: Analyzes and processses file content, especially powerful for column-based operations. Regular Expressio...
Social engineering involves deception where attackers impersonate trusted entities to trick users into revealing credentials or sensitive data. Malicious login attempts often utilize automated tools for brute-force or dictionary attacks against user account passwords. Sensitive information exposure...
This guide walks through deploying a production-ready Kubernetes cluster using kubeadm on CentOS 7, targeting version 1.28.9. The topology consists of one control-plane node and two worker nodes. Kernel Upgrade for Stability Older kernel versions may cause unexpected behavior in container runtimes a...
Docker Installation on CentOS 7 Registry Mirror Configuration To improve image download speed, configure Alibaba's registry mirror by editing /etc/docker/daemon.json: { "registry-mirrors": ["https://91cntlkt.mirror.aliyuncs.com"] } Restart the Docker service after making changes:...
What is YUM YUM (Yellowdog Updater, Modified) is a dependancy-aware package management tool for RPM-based Linux distributions that simplifies the entire lifecycle of software management, from installation to removal, compared to manual RPM management. YUM Repository Basics A YUM repository is a coll...
Overview This section outlines the process of installing Docker on CentOS 7, covering both online and offline installation methods. Only CentOS 7 and later versions with kernel 3.10 or higher are supported. Online Installation of Docker Check the system version: cat /etc/redhat-release Install requi...