Self-Hosting Articles

Database Upgrade Problems! MySQL 5 → 8 with WordPress My webhost upgraded their database server from MySQL 5 to 8. The upgrade itself went smoothly, but I did find some after-effects on my WordPress sites
Getting Logged Out of ClassicPress ClassicPress uses a strict mode for admin cookies, so following a link to your dashboard from another site requires you to log in again.
Jetpack Related Posts Missing on an SSL WordPress Site? (Obsolete) If you can't get Jetpack's related posts to load on self-hosted WordPress running HTTPS, check your SSL settings to see if you need to disable RC4.
Moving WordPress: Finding and Updating Old Paths How to find every last reference to the old path in the entire site and config because WordPress stores absolute paths all over the place and some configurations will break if you don't update it.
Nextcloud Tasks: Mobile, Recurring, and Compatibility Gotchas Which desktop, web and mobile applications have and haven't worked well for me since switching my personal to-do lists to Nextcloud Tasks.
PHP5 and WP Cache 2 (Obsolete) Finding and fixing errors with WordPress' WP Cache plugin and PHP5.
Slow or Broken Sync with Nextcloud: Token does not exist Some applications have trouble syncing unless you assign them an app-specific password.
WordPress + ActivityPub in a Subdirectory This rewrite rule lets other Fediverse sites find your blog through the ActivityPub plugin, without breaking Let's Encrypt renewals.
WordPress 5.7 Upgrade Breaks Posts with Emoji in the Title? Posts with emoji in the title mysteriously stopped displaying anywhere on the blog except the edit form, possibly due to mismatched character sets.
WordPress Broken on PHP 5.2 Again (Obsolete) WordPress 2.1.1 should have fixed the PHP 5.2 problems, but not if you're also using the internal cache.
WordPress Name+Number Login/Registration Attacks I was seeing a lot of brute force login attacks with odd usernames, and found that they were actually trying to register and kept trying the wrong form.