If you want to host something on a Raspberry Pi, you should consider using literally any other piece of hardwarelocked
There are a lot of reasons not to give them your money. They're assholes to the maker community and they openly talk shit on a lot of their customer base. That's beside the point, though, really.
It's just not a spectacular option for hosting. In order to get a Rpi competitive with even the shittiest laptop from 7 years ago, you're going to end up spending more than you would spend on a decent laptop from 7 years ago.
If it is a computer that turns on, it will likely function orders of magnitude better than an Rpi and won't bind you to ARM architecture. My entire hosting setup was pulled out of a recycling pile for free. Install ubuntu/ubuntu server and enjoy yourself.
If you intend on spending any amount of money on this hobby, I cannot express enough how much I recommend against any of that money going toward a Raspberry Pi.
EDIT: A lot of you seem to be reading this as "Raspberry Pis are all nonfunctional" and getting mad about it. Don't do that.
Edit 2: Good to see that all the stupid parts of reddit made it here
What OS are you using with your RP4to host all that?
Pretty sure you can use the standard raspberry pi os and run all those apps with docker or k3s
Yep, correct. I had to set some cpu limits to make sure pihole stays responsive.
Just standard raspberry headless os. Everything running in containers except pi hole.
I've installed a heat sink and a fan, triggered at 70c. Also have set some cpu docker limits on eg frigate and nzbget to ensure it doesn't take the rest down.
But it performs surprisingly well. Load is 1 on average, goes up a bit when eg motion is detected, an nzb is parred/extracted, or photoview is indexing stuff.
Also recently added Paperless. Set everything to minimum, eg one document at a time.