You're not sending your nginx logs to Google, a well known advertiser, do you?
In this case you can store IP addresses if you have a legitimate reason (e.g. you can show you need it for troubleshooting etc), as long as it's reasonable and doesn't infringe on the rights of the user, and you have documented it along with the retention strategy.
In this case you can store IP addresses if you have a legitimate reason (e.g. you can show you need it for troubleshooting etc), as long as it's reasonable and doesn't infringe on the rights of the user, and you have documented it along with the retention strategy.