This draft rewrites a real mail operations note into a cleaner guide for improving send-only SMTP deliverability by wiring Postfix to OpenDKIM, generating per-domain keys, and publishing the required DNS records.
This draft captures the exact repository and package commands I used to install a pinned Terraform version on Ubuntu 24.04 LTS.
This draft captures a small but useful operational pattern: run certbot renew from cron and reload the Nginx container afterward so the renewed certificates are actually picked up.
This draft turns a real GitLab upgrade note into a cleaner walkthrough focused on the upgrade path, the intermediate required version, and the service checks I used after each step.
This draft turns a raw CORS debugging note into a cleaner explanation of the real issue: browser-based cross-origin restrictions and the practical workaround of routing requests through a server-side proxy.
This draft shows how I used WSL 2 to attach a physical Windows disk, inspect it from Linux, wipe it with shred, and cleanly unmount it afterward.
This draft captures a common cloudflared repair pattern: upgrade the binary, refresh the login material, and recreate the tunnel credentials rather than guessing at partially broken state.
This draft captures a practical SSL troubleshooting case where renewals looked broken on an older Thumbor host, with the key details coming from the renewal logs and a manual run.
This draft preserves a practical staging note for restarting a Vault service, checking logs, and bouncing a dependent infrastructure container when secrets-related plumbing gets out of sync.
This draft captures the practical sequence for terminating a WSL 2 distribution and compacting its backing ext4.vhdx file through diskpart.