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129 entries match these filters
- 0169 Add a new disk: partition, format and mount it by UUID Find a new disk with lsblk, partition it with parted, create an ext4 or XFS filesystem and mount it permanently through /etc/fstab… Intermediate · Step by step · Linux Article Disks, LVM & filesystems 15 Oct 2026
- 0171 Extend an LVM logical volume and filesystem online (safe script) A bash script that grows the LVM volume behind a mount point, checks the filesystem type and free space first, and runs… Advanced · Step by step · Linux Script Disks, LVM & filesystems 15 Oct 2026
- 0173 Set a static IP address: nmcli on RHEL vs netplan on Ubuntu RHEL, Rocky and AlmaLinux configure networking with NetworkManager (nmcli); Ubuntu Server uses netplan YAML. Here is the same static IP setup in… Intermediate · Step by step · Linux Article Networking & firewalls 15 Oct 2026
- 0175 Open ports with firewalld and ufw firewalld (RHEL, Rocky, AlmaLinux) and ufw (Ubuntu) are friendly front ends to the kernel firewall. Allow SSH first, then open only the… Intermediate · Step by step · Linux Article Networking & firewalls 15 Oct 2026
- 0178 Create a sudo user with an SSH key and disable password login A bash script that creates an admin user in the sudo or wheel group, installs their SSH public key and can switch… Advanced · Step by step · Linux Script Keys & config · Users, sudo & hardening 15 Oct 2026
- 0182 Your first Ansible playbook: install nginx and publish a page A complete beginner playbook that installs nginx on Debian or Ubuntu servers, starts it at boot and deploys a home page, with… Beginner · Step by step · Linux, macOS Script Ansible 15 Oct 2026
- 0138 Kubernetes RBAC basics: least-privilege access for a service account RBAC controls who may do what in a cluster with Roles, ClusterRoles and bindings. This guide grants a CI service account deploy… Advanced · Step by step · Linux Article Concepts · Config, secrets & storage 15 Oct 2026
- 0139 Collect describe, events and logs of a failing Kubernetes pod A bash script that saves a pod's status, describe output, events, YAML, current and previous logs of every container and its node… Intermediate · Step by step · Linux, macOS Script Troubleshooting 15 Oct 2026
- 0150 Logging in with oc and working with OpenShift projects Install the oc client, log in with a password, browser or token, then create, switch and inspect projects. Covers where oc stores… Beginner · Step by step · Any system Article Concepts · Deploying applications 15 Oct 2026
- 0151 Tutorial: deploy a small web app on OpenShift and expose it with a Route A step-by-step first deployment: create a project, build a static website from Git with Source-to-Image, publish it on an HTTPS Route, then… Beginner · Step by step · Any system Article Deploying applications 15 Oct 2026