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Btw, would you be so kind to share the config of this node? Is it a full rpc node with all API's and Plugins enabled? What is the server spec? Location?

It's a full node, yes.
2 servers with different specs (all XEONs with SSDs, up to 256MB RAM), and I will add more as necessary. Everything is hosted in germany on 1Gbps right now.

Great specs are this nodes running opensuse?

I wish to mine steem one day

Super awesome! :)