WordPress
How to Fix ERR_TOO_MANY_REDIRECTS in WordPress
A redirect loop in WordPress has three usual causes. One curl command shows which addresses are bouncing, and that pattern tells you the fix.
Author
Munaf Sheikh
I’m an open-source enthusiast and web hosting specialist who builds on raw Ubuntu servers and NGINX, with nothing in the stack I didn’t put there myself. I’ve helped Fortune-listed companies deploy their platforms/applications and still work with several of them. I assess new tools, technologies tune stacks until they run lean, and write up what works here.
Articles by Munaf Sheikh
85 articles
Servers
How to Fix 502 Bad Gateway on Nginx
A 502 from Nginx means the program behind it did not answer. The last line of the error log says how it failed, and each message has one fix.
WordPress
How to Fix Error Establishing a Database Connection
WordPress cannot reach its database. Test the login by hand and the error number tells you the cause: wrong details, a stopped server, or a full one.
Website Security
How to Set Up SSH Keys on Windows
Create an SSH key in PowerShell, copy it to your Linux server without ssh-copy-id, save your servers in a config file and switch off password logins.
Website Security
How to Set Up a UFW Firewall on Ubuntu
Set up UFW on Ubuntu without locking yourself out: allow SSH first, deny the rest, open only what you need, and cover Docker and IPv6.
Servers
How to Check Disk Health on a Linux Server With smartctl
Read SMART data with smartctl on SATA and NVMe drives: which counters warn of failure, how to run self-tests, and how to get alerts from smartd.
WordPress
How to Fix WordPress Emails Going to Spam
WordPress emails land in spam because the web server is not an authorised sender. Fix it with SMTP, the right From address, and SPF and DKIM.
Servers
How to Host Multiple Websites on One VPS With Nginx
Host several websites on one VPS safely: a separate user, PHP-FPM pool, Nginx server block, database and SSL certificate for each site.
Website Security
How to Set Up Free SSL on Nginx With Certbot
Install a free Let's Encrypt certificate on Nginx with Certbot, confirm automatic renewal with a dry run, and fix the errors that stop it working.