Inspecting Resources Viewing Image Repositories Retrieve a list of all image objects available locally. docker images --all Monitoring Active Containers List currently running instances to verify status and obtain identifiers. docker ps -a The output displays the Container ID in the first column, wh...
System Requirements and Environment Verification Before deploying Rancher, verify the host system specifications to ensure compatibility. Operating System Check cat /proc/version Linux version 3.10.0-957.21.3.el7.x86_64 (mockbuild@kbuilder.bsys.centos.org) (gcc version 4.8.5 20150623 (Red Hat 4.8.5-...
Boot Process Overview CentOS 6 Boot Sequence Power-On Self Test (POST) Hardware validation and diagnostics MBR Boot Sector Reads boot loader from disk Master Boot Record GRUB Menu Select kernel version or enter single-user mode for password recovery Kernel Image Loading Loads kernel into memory for...
Prerequisites and Initial Setup To begin, ensure you have VMware Workstation installed and a CentOS 7 ISO image available. When creating a new virtual machine, follow the standard wizard prompts. If the installation fails due to an Intel VT-x error, access your computer's BIOS/UEFI setings, locate t...
Deploying applications in an isolated network environment requires preparing all necessary assets on a connected machine before transferring them. This guide outlines the procedure for setting up a Python 3.9 environment and project dependencies on an offline CentOS server.Phase 1: Resource Preparat...
Git serves as the industry-standard distributed version control system. It enables collaborative development across multiple machines, allowing teams to maintain consistent repositories while integrating changes safely. Unlike centralized systems such as SVN, Git allows every developer to have a ful...
Building a robust offline package repository is crucial for managing software installations in air-gapped environments or on servers with limited internet access. This approach ensures that all necessary dependencies are available locally, preventing installation failures and maintaining consistency...
Base Virtual Machine ConfigurationProvision a base virtual machine with 4GB RAM, 50GB hard disk, hostname node00, and IP address 10.0.2.100.Ensure the VM has internet connectivity before using package managers:[root@node00 ~]# ping google.com PING google.com (142.250.190.46) 56(84) bytes of data. 64...
Overview The default kernel shipped with CentOS 7 and CentOS 8 is often older then what modern applications require. This guide covers two methods for upgrading the Linux kernel: using the ELRepo repository package manager, or manually installing RPM packages. Warning: Kernel upgrades require carefu...
To run a Python script continuously in the background on a Linux system, you can register it as a systemd service. This approach ensures automatic startup on boot and recovery after unexpected termination. Prerequisites Ensure you have a working Python script. For this example, assume the script is...