For those feeling a bit lost, you just need to add this IP to your config file in order to connect to the challenge node and be counted:
peers_preferred = ["213.239.215.236:3414"]
Source: https://grinnode.live/
For those feeling a bit lost, you just need to add this IP to your config file in order to connect to the challenge node and be counted:
peers_preferred = ["213.239.215.236:3414"]
Source: https://grinnode.live/
Actually, my node isn’t being counted, and that IP doesn’t appear under “Peers and Sync” in the menu.
Here’s my .toml:
peers_preferred = ["213.239.215.236:3414"]
#maximum number of inbound peer connections
peer_max_inbound_count = 30
#maximum number of outbound peer connections
peer_max_outbound_count = 10
#preferred minimum number of outbound peers
peer_min_preferred_outbound_count = 10
#temporarily allowed to exceed peer_max_inbound_count
peer_listener_buffer_count = 5
I can ping that IP and can telnet into 3414 from my node. When I switch to “List” seeding, and explicitly set that IP, I have 0 connections at first, and then eventually pick up a connection which doesn’t match that IP. Otherwise, I quickly get 10 outbound connections that don’t match that IP.
What could be the problem?
You are doing everything correct.
If you connect to the high-available IP address using
peers_preferred = ["213.239.215.236:3414"]
your node gets redirected to one of our GRIN-Nodes.
As long as you see connections to any Grin-node with sub domain :
*.grinnode.live:3414
you are fine and your node is being added to the challenge.
Updated FAQ section:
I asume winners are selected at random or based on random chance corrected for the up time, right. Otherwise joining the list or setting up a new node right now would automatically not win… and I want T-Shirt 
You are correct, joining now will not bring you in Top20.
If more than 20 Users reply here telling us, we have successfully setup a Grin-Node and connected to Grinnode.live, we will add 10 more T-Shirts
to the winning pool.
What do you think about this?
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I have successfully setup a grin node and connected to grinnode.live
I have successfully setup a grin node and connected to grinnode.live, and it was fun!
I will add two more nodes this afternoon, one existing and one new one.
I have successfully setup a grin node and connected to grinnode.live 
I have successfully setup a grin node and connected to grinnode.live
I have successfully setup a grin node and connected to grinnode.live 
@david, I do not see a grin-server.toml file as part of Grin++. What config file does Grin++ use where I can specify the peers_preferred? Thx.
I just realized I cannot setup additional nodes due to the need for port forwarding for port 3414
. Since I forward the ports used by Grin to one computer cannot redirect to another, right? I was even thinking of going for three nodes by adding a node running on a Raspberry Pi. Any thoughts on how to circumvent this limitation?
Don’t stop using Grin++ to participate 
But, if you are on Windows I can recomend you setting up a Grin-Node under Windows following my How-To: https://github.com/MCM-Mike/grinnode.live/blob/master/documentation/node/winodws-how-to-run-node.md to run a Grin-Node and connect to us. (not 100% ready but it will guide you through the steps)
You can also share this link and I am writing on an official Windows Grin-Node article here on the main repository: https://github.com/mimblewimble/docs/wiki/(draft)-How-to-run-a-Grin-Node-(Windows) (also in draft state)
As always have fun 
I would love to do so, but I cannot run two nodes from the same IP right? Nor additional nodes via the same router since I can only forward port 3414 to a single machine.
To not repeat my self again: " Don’t stop using the Grin++"
Using the Grin-Node under Windows (see my how-to) you can add the preferred_peer .
i have successfully setup 2 Grin-Nodes and connected both to Grinnode.live.
Hard to win when you are late 2 the party but im still gonna try! 
This is the Grin-Node Challenge 2020 spirit
have fun and perhaps you win a t-shirt 
Exactly, you can always win an awesome T-shirt. And if you do not win one, you can buy one to ease the pain of not winning. I also put two nodes online.