This was in the context of my dedicated server - not cloud.
First, I asked whether I could run a non-mining Ethereum node. The answer was no.
Then I asked:
>How about if I sync one copy of the Ethereum block chain (about 350 GB of data) to my server without allowing it to be publicly accessible - is that allowed?
and also whether they allow crypto applications at all. Hetzner support answered
> Dear ladies and gentlemen
> We do not allow any crypto related applications.
Hetzner's public documentation only seems to forbid mining applications, which they started doing in May on all servers including dedicated.
There is also this Reddit post from about 1 month back that indicated they forbid crypto applications on cloud servers
https://www.reddit.com/r/ethstaker/comments/qwteod/be_careful_with_hetzner_any_crypto_activity_is/
but it appeared that did not apply to dedicated servers.
Has any one else on HN received a recent response from Hetzner regarding what is permitted on dedicated servers with respect to crypto applications?
DEDICATED SERVER SERVICE AGREEMENT
We strive to keep our networks operating at
the highest possible level, so all of our clients benefit from it.
Therefore the following actions are prohibited:
- Operating applications that are used to mine crypto currencies
- The scanning of foreign networks or foreign IP addresses
- Manually changing the hardware address (MAC)
- The use of fake source IPs.It will lead to a whole mess of confusion when you start talking of cryptography (the original "crypto") with people who assume you mean cryptocurrencies.
Eg. I can imagine a tier 1 support person saying how some cryptography is forbidden already.
The likely reason for forbidding the applications is that syncing deteriorates the disks heavily. Nevertheless, they seem to be widely used to this date, as time synchronisation with them seems to have positive effect on node operation effectiveness.
From what others have commented the T&Cs only disallow mining.