This draft turns a real cluster note into a cleaner walkthrough for installing cert-manager, configuring a Cloudflare-backed ClusterIssuer, issuing certificates, and handling a few common ingress-related surprises.

This draft turns a real outage recovery note into a readable operations walkthrough covering service scale-down, Elasticsearch cleanup, database restore, and controlled service startup.

This draft captures the Windows-side pieces needed to make an SSH service running in WSL 2 reachable through a Windows 10 host.

This draft is based on a real cluster note where I validated private image pulls in Kubernetes by creating a Docker registry secret, attaching it to a deployment, and testing the workload in a dedicated namespace.

This draft captures a simple Ubuntu 20.04 configuration change where I disabled IPv6 through sysctl.conf to force IPv4 behavior for a workload.

This draft captures a Kubernetes preparation issue where sysctl reloads failed because /proc/sys/net/bridge/bridge-nf-call-iptables did not exist until br_netfilter was loaded.

This draft captures a real cluster recovery workflow where problem nodes were cleaned up, re-registered into Rancher, and then brought back into a larger rebuild that included storage, MetalLB, and GPU-related follow-up work.

This draft captures a small but blocking issue in a DeepOps-style Ansible run where the remote Python environment was missing the pkg_resources module from setuptools.

This is a draft stub built from a raw troubleshooting note where an FTP service in Kubernetes showed TLS disconnect errors and repeated container crashes.

This is a real-world provisioning log, rewritten into a readable deployment walkthrough for Linux admins and technical hiring managers.