Tag · 7 items
DevOps
Content that mentions this tag in frontmatter.
Articles
How to Enable PostgreSQL Remote Connections on Ubuntu (Safely)
Walk through PostgreSQL remote access on Ubuntu without pretending every IP is friendly: listen_addresses, pg_hba.conf allow-lists, restarts, listening checks on 5432, and firewall habits that match the rest of your VPS baselines.
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Free SSL with Certbot and Nginx on Ubuntu
Stop chasing browser warnings: install python3-certbot-nginx on Ubuntu, issue a Let's Encrypt certificate with HTTP validation, redirect HTTP to HTTPS, and confirm systemd renewal hooks with a dry run before traffic spikes.
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Nginx Reverse Proxy: Map Your Domain to a Localhost App
When your app already listens on a port but your domain still shows the default Nginx page, a small reverse-proxy server block fixes it. Here is the config I paste first, how each line earns its keep, and the exact commands to enable and reload safely.
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Linux Crontab Scheduling: Automate Recurring Scripts and Cron Jobs
Linux crontab is the pragmatic way to repeat backups, updates, and small scripts across one box or many. This walkthrough covers crontab -e, the five schedule fields, sudo vs. user cron files, shortcuts like @daily, and the commands to list or clear jobs.
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Install and Configure Apache2 on Ubuntu EC2
I use Apache when I want a straightforward HTTP daemon on a small Ubuntu box without rewriting every tutorial path. Here is the exact apt flow, the UFW profile I enable alongside SSH, and the security-group edit people forget after locking the host down.
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Install Nginx on Ubuntu Server: apt, UFW, systemd, welcome page
Follow apt install nginx on Ubuntu Server, align UFW application profiles with whether you want port 80 only or port 443 too, use systemctl status nginx for quick verification, then hit the welcome page so you know HTTP reaches Nginx—not only localhost.
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Snippets
Nginx on Ubuntu — install and firewall commands
Copy-paste only: update packages, install Nginx, open UFW for Nginx, check status and reload. Pairs with the full walkthrough post.
# Packages and service
sudo apt-get update && sudo apt-get upgrade
sudo apt install nginx
sudo systemctl status nginx
sudo systemctl reload nginx # after config edits (e.g. new server blocks)
# Firewall (Ubuntu UFW) — "Nginx Full" = ports 80 + 443The newsletter
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