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Workshop » Reference Section » Grimoires » IT » Platforms » Web » WordPress » Yoast

CURL and Browser get different page versions (301 redirects, content changed, etc. — due to Yoast url parameter stripping only for non-logged-in users)

I had a truly maddening problem where my /embed/ functionality was sometimes returning full pages to CURL commands and online services like redirect-checker.org, etc. It turned out, it was Yoast's…
Workshop » Reference Section » Grimoires » IT » Platforms » Linux » Packages » SQL

SQL query to list all WordPress post revisions for archiving

Here's the SQL query to get all post revisions, which I do prior to cleaning them out of the database, which seems to make it much faster: SELECT p.* FROM…
Workshop » Reference Section » Grimoires » IT » Platforms » Linux » Packages » rsync & rsnapshot

Speeding up rsnapshot (rsync) backups by removing wildcard paths from exclude

I removed a bunch of wildcard paths from rsnapshot.conf's exclude, and suddenly tonight my backup ran in a few minutes instead of taking over a day like it usually does.…
Workshop » Reference Section » Grimoires » IT » Troubleshooting log » Web Server

Performance troubleshooting & settings changes 2025aug29

Following several days of frequent freezes, I tried changing the following settings updated in : [opcache] original settings ;recommended by https://vpsfix.com/14433/virtualmin-post-installation-configuration-and-server-optimization-guide/ opcache.enable= opcache.memory_consumption= opcache.interned_strings_buffer= opcache.max_accelerated_files= opcache.validate_timestamps= opcache.revalidate_freq= opcache.save_comments= ;end recommendation…
Workshop » Reference Section » Grimoires » IT » Platforms » Linux » File management

Directory and File Locations particular to this server

PHP config - Includes: - opcache settings - error warnings PHP slow log setup is in PHP log - PHP error and slow logs by pool are in
Workshop » Reference Section » Grimoires » IT » Platforms » Linux » Packages » rsync & rsnapshot

Resolving an rsnapshot error — “rsync: –delete does not work without –recursive (-r) or –dirs (-d). rsync error: syntax or usage error (code 1) at main.c(1795)”

I discovered rsnapshot hadn't run in a few days. Checking /etc/rsnapshot.log, I found every recent day had this: rsync: --delete does not work without --recursive (-r) or --dirs (-d). rsync…
Workshop » Reference Section » Grimoires » IT » Troubleshooting log » VMWare

VMWare VM unreachable via IP after reboot, even from host machine

My VWWare VM lost internet connectivity after a reboot. Even the host machine could not access any service on it. Http/https got 523 errors. I powered down the VM, changed…
Workshop » Reference Section » Grimoires » IT » Platforms » Linux » Packages » rsync & rsnapshot

Reducing rsnapshot or rsync resource usage

I've had sporadic problems with clearing the WP cache causing the server to return 520 errors for a few minutes. Usually other sites on the same server are fine, it's…
Workshop » Reference Section » Grimoires » IT » Troubleshooting log » WordPress

Deactivating, deleting, and completely removing a plugin that WordPress won’t let you deactivate

I installed the WordPress plugin LWS Optimize, which turned out to be unusably broken (which is the reason I'm not linking to it) and made my site unusable. To make…
Workshop » Reference Section » Grimoires » IT » Troubleshooting log

Website returns 503 server errors, but no errors in logs

Had a weird one today. Last one website of the several of on this server suddenly started returning 503 (service unavailable) errors. There was nothing in the PHP error log…
Workshop » Reference Section » Grimoires » IT » Troubleshooting log

/Devlog

2025nov16Added "preventduplicates" option to othercatposts shortcode with a default of off, so now it will show posts in multiple sections, as explained in the code comment by that option.2025nov14add .hover-slide-bg…