After a patch day, how can I determine whether configuration adjustments are necessary?

We deliver to the directory

/usr/local/etc-sample

templates for all configuration files relevant to the installed package versions. You can use these as a guide and check whether any adjustments are needed.

In particular, compare—if available—the corresponding
*.sample files for a service, e.g.,

/usr/local/etc/redis.conf.sample

and

/usr/local/etc-sample/redis.conf.sample

You can easily do this using the diff command:

$ diff /usr/local/etc/redis.conf.sample /usr/local/etc-sample/redis.conf.sample

We also recommend comparing the PHP configuration files from time to time:

/usr/local/etc/php.ini-production

and

/usr/local/etc-sample/php.ini-production

using

$ diff /usr/local/etc/php.ini-production /usr/local/etc-sample/php.ini-production
...
385c400
< max_input_vars = 1500
---
> ; max_input_vars = 1000
389c404
< memory_limit = 512M
---
> memory_limit = 128M
...

If any changes are found here, they could affect your
application and may therefore need to be updated in your php.ini file.