Dmarc
_dmarc subdomain, TXT reject all, lose policy reject all, strict spf and DKIM policy
public documentation
Redis cache
Enable redis in the hosting control panel Install Redis Object Cache ( Till kruss ) Config wp-config.php enable the plugin -> wp-admin/options-general.php?page=redis-cache
30 seconds fatal error in class-wp-image-editor-imagick.php
PHP Fatal error: Maximum execution time of 30 seconds exceeded in /home/username/domains/domain.ext/public_html/wp-includes/class-wp-image-editor-imagick.php on line 888 Is this happening on all WP calls ? -> fix this by setting a define for MP_NO_THUMBSLATER as true in your wp-config.
Disable wp-cron.php
Now create a real linux cron to call php wp-cron.php
No user can visit wp-admin
Message Sorry, you are not allowed to access this page. WP Core Check user first: Note that NO role is present. Now check the DB user table: Now list all existing site roles ( https://developer.wordpress.org/cli/commands/role/list/ ) Note that the whole site does not have roles. Now add the base roles again ( https://developer.wordpress.org/cli/commands/role/ )
Allow online PHP editor again
While we do not encourage this at all, add a define true for MP_NO_DISALLOW_FILE_EDIT in your wp-config.php Why? If you make a mistake your complete site will be broken (PHP fatal error) and you cannot fix it using the editor again. Please use SSH/SFTP or even the hosting file manager -> editor at all costs.
500 internal error, request exceeded the limit of 10 internal redirects
This usually happens on multisite, when a subsite is overwriting the base url in the .htaccess file. Example: The fix in this case is to remove /de so it becomes this:
WP-CLI force specific PHP version
If you need to force a different version on a system with multiple PHP versions: user whereis source https://wordpress.stackexchange.com/a/398533/36159
Pizza meetup
Rule of thumb: 2/3 of the partipants need a full pizza. So if 6 persons are there, order 4 pizzas.