Because someone asked, here is the step-by-step of what I did.
Daedalus testnet wallet
You will want a Daedalus test wallet. Download and install it to your PC from here: https://testnet.iohkdev.io/cardano/get-started/testnet-wallet/
Once it starts it will sync the chain - on my 4GB Mac book pro this took 2.5 hours. Complete the steps as per the instructions on the web page and get test ADA from Faucet.
The testnet Daedalus looks different to the regular one - icon is red, and red “testnet” sticker inside - so no expensive mistakes.
As you know, Daedalus runs a node in the background, so congratulations - mission accomplished.
But what you really want to know is how to run a 24/7 node on a Linux server for the coming stake pools…
Create an account with Digital Ocean, Linode, AWS, or whoever.
Create a Ubuntu18.04 instance with 4GB RAM, 80GB storage and a static public IP address (you may have to setup the IP address after you create the instance, on AWS it’s called an elastic-ip).
Public/Private key ssh
Depending on your provider you may want to set up remote ssh access using public/private keys, and turn off ssh via a password. Only do this if you have some way of getting console access, otherwise you might be locked out forever.
On your PC do:
ssh-keygen
public key is:
cat ~/.ssh/id_rsa.pub
on server paste that into ~/.ssh/authorized_keys
If you are using the root account on server, from your PC do:
ssh root@111.222.333.444
It should go right in without a password.
On the server uncomment & change PasswordAuthentication yes to no in this file:
/etc/ssh/sshd_config
Then:
systemctl restart ssh
Check again it works from your PC. Also something like ssh abc@111.222.333.444 will not ask for password, but will reject immediately.
Create swap
To see how much swap you have do this:
swapon —show
I want 10G so I make a swap file like this:
fallocate -l 10G /swapfile
chmod 600 /swapfile
mkswap /swapfile
swapon /swapfile
sysctl vm.swappiness=20
then edit the file /etc/fstab and add the following on the last line:
/swapfile swap swap defaults 0 0
reboot
Login, then to see if it worked:
free -h
Installation of software
Get latest everything:
apt-get update
apt-get upgrade // takes 15m, if msg about grub, keep local.
apt-get dist-upgrade
reboot
login again, then get nix:
mkdir /etc/nix
echo "build-users-group =" > /etc/nix/nix.conf
curl https://nixos.org/nix/install | sh
then:
. /root/.nix-profile/etc/profile.d/nix.sh
Get Cardano node:
cd ~
git clone https://github.com/input-output-hk/cardano-sl.git
cd cardano-sl
git checkout master
Edit this file /etc/nix/nix.conf add these lines at the end exactly like this:
substituters = https://hydra.iohk.io https://cache.nixos.org
trusted-substituters =
trusted-public-keys = hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ= cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=
In the cardano-sl directory:
nix-build -A connectScripts.testnet.wallet -o connect-testnet-wallet
Run the node
Run node in foreground:
./connect-testnet-wallet
On another session observe sync, as the block data is written, takes about 2 hours:
cd ~/cardano-sl/state-wallet-testnet/db/blocks/data
watch ls -lrt1
Run the node on startup in the background
Create the file /etc/rc.local with this content:
#!/bin/bash
cd ~/cardano-sl/ ; ./connect-testnet-wallet >> ./sl.log 2>1 &
then:
chmod +x /etc/rc.local
People will say that isn’t “proper” but it works, do a reboot and check it’s running.
See the process:
ps auxww | grep cardano
Tail the log:
tail -f ./cardano-sl/sl.log
Later we can make it so if the node falls over it is automatically restarted.
Talking to the node
There is an API to talk to the node, eg:
cd ~
cd cardano-sl
curl -v —cacert ./state-wallet-testnet/tls/client/ca.crt --cert ./state-wallet-testnet/tls/client/client.crt --key ./state-wallet-testnet/tls/client/client.key https://localhost:8090/api/v1/wallets
This called the wallet API, to get a list of wallets - obviously there are none - and there was a lot of noise. Without the -v switch we just get the output without the noise.
I make a wallet like this:
curl -s -X POST https://localhost:8090/api/v1/wallets -H 'Accept: application/json; charset=utf-8' -H 'Content-Type: application/json; charset=utf-8' --cacert /root/cardano-sl/state-wallet-testnet/tls/client/ca.crt --cert /root/cardano-sl/state-wallet-testnet/tls/client/client.crt --key /root/cardano-sl/state-wallet-testnet/tls/client/client.key -d '{"name":"TestWallet2","operation":"create","backupPhrase":["note","behind","pause","hand","trigger","august","educate","table","salad","divorce","fade","glimpse"],"spendingPassword":"8a508a145bf4b4e324f54626a81c0b2a93823f7465b6eef9a0108a51f88788c8","assuranceLevel":"normal"}'
>> {
"status" : "success",
"data" : {
"assuranceLevel" : "normal",
"spendingPasswordLastUpdate" : "2019-03-21T20:40:02.641728",
"hasSpendingPassword" : true,
"syncState" : {
"data" : null,
"tag" : "synced"
},
"balance" : 0,
"createdAt" : "2019-03-21T20:40:02.641728",
"id" : "2cWKMJemoBajgtUAcVTh2JCCC91pGkVWvW8RmesSk2gXFoL6gRcDs59oEVdoFVD5Kyi21",
"name" : "TestWallet2"
},
"meta" : {
"pagination" : {
"page" : 1,
"perPage" : 1,
"totalEntries" : 1,
"totalPages" : 1
}
}
}
Now we can see the wallet:
curl -s --cacert /root/cardano-sl/state-wallet-testnet/tls/client/ca.crt --cert /root/cardano-sl/state-wallet-testnet/tls/client/client.crt --key /root/cardano-sl/state-wallet-testnet/tls/client/client.key https://localhost:8090/api/v1/wallets
>> {
"data" : [
{
"syncState" : {
"tag" : "synced",
"data" : null
},
"createdAt" : "2019-03-21T20:40:02.641728",
"name" : "TestWallet2",
"spendingPasswordLastUpdate" : "2019-03-21T20:40:02.641728",
"hasSpendingPassword" : true,
"id" : "2cWKMJemoBajgtUAcVTh2JCCC91pGkVWvW8RmesSk2gXFoL6gRcDs59oEVdoFVD5Kyi21",
"balance" : 0,
"assuranceLevel" : "normal"
}
],
"status" : "success",
"meta" : {
"pagination" : {
"totalPages" : 1,
"totalEntries" : 1,
"page" : 1,
"perPage" : 10
}
}
}
The balance is zero.
Now generate address:
curl -s --cacert /root/cardano-sl/state-wallet-testnet/tls/client/ca.crt --cert /root/cardano-sl/state-wallet-testnet/tls/client/client.crtt/cardano-sl/state-wallet-testnet/tls/client/client.key POST https://localhost:8090/api/v1/addresses -H 'Accept: application/json; charset=utf-8' -H 'Content-Type: application/json; charset=utf-8' -d '{"accountIndex":2147483648,"spendingPassword":"8a508a145bf4b4e324f54626a81c0b2a93823f7465b6eef9a0108a51f88788c8","walletId":"2cWKMJemoBajgtUAcVTh2JCCC91pGkVWvW8RmesSk2gXFoL6gRcDs59oEVdoFVD5Kyi21"}'
>> {
"data": {
"id": "37btjrVyb4KGG7zYWz9h8Hvad11aG6LiRwdBXnqe5yRQAFPh8tHksGcM1CyMcmUfFN7mLKAnWthFyBH5MdpwgDQXikWEkMAm9KFZQv5ZQMyzkutrmT",
"used": false,
"changeAddress": false,
"ownership": "isOurs"
},
"status": "success",
"meta": {
"pagination": {
"totalPages": 1,
"page": 1,
"perPage": 1,
"totalEntries": 1
}
}
}
This is the generated address:
37btjrVyb4KGG7zYWz9h8Hvad11aG6LiRwdBXnqe5yRQAFPh8tHksGcM1CyMcmUfFN7mLKAnWthFyBH5MdpwgDQXikWEkMAm9KFZQv5ZQMyzkutrmT
I go to my Daedalus test wallet and send 14 ADA to the address, then get the wallet details again to check balance:
curl -s --cacert /root/cardano-sl/state-wallet-testnet/tls/client/ca.crt --cert /root/cardano-sl/state-wallet-testnet/tls/client/client.crt --key /root/cardano-sl/state-wallet-testnet/tls/client/client.key https://localhost:8090/api/v1/wallets
>> {
"status" : "success",
"data" : [
{
"createdAt" : "2019-03-21T20:40:02.641728",
"spendingPasswordLastUpdate" : "2019-03-21T20:40:02.641728",
"syncState" : {
"data" : null,
"tag" : "synced"
},
"id" : "2cWKMJemoBajgtUAcVTh2JCCC91pGkVWvW8RmesSk2gXFoL6gRcDs59oEVdoFVD5Kyi21",
"hasSpendingPassword" : true,
"balance" : 14000000,
"name" : "TestWallet2",
"assuranceLevel" : "normal"
}
],
"meta" : {
"pagination" : {
"totalEntries" : 1,
"totalPages" : 1,
"perPage" : 10,
"page" : 1
}
}
}
The balance is 14.
There is a whole API here: https://cardanodocs.com/technical/wallet/api/v1/
Hope it helps you.
) found another prtt s/b prt