Viction Private Testnet Setup

This tutorial shows how to set up a private Viction Testnet on a local machine. The purpose is to help developers to familiarise themselves with Viction's source code and initial setup.

The following will walk you step-by-step to setup a Viction private net with four Masternodes.

Setup environment

Install Golang

Follow instruction here for your operating system: https://go.dev/doc/install

For MacOS running not Apple Silicon, please use amd64 variant of Golang instead of arm64.

Set environment variables

set GOROOT=$HOME/usr/local/go
set GOPATH=$HOME/go

Build Tomo from source

Create Tomo folder

mkdir $HOME/tomo
cd $HOME/tomo

Download source code and build:

git init
git remote add [email protected]:Viction/Viction.git
git pull origin master
make all

Download source code Tomo and install library:

git clone https://github.com/BuildOnViction/Viction
cd Viction
go mod tidy -e
make all
cd ..

Create alias for Tomo (this will only be effective in current session)

alias tomo=$PWD/Viction/build/bin/tomo
alias puppeth=$PWD/Viction/build/bin/puppeth
alias bootnode=$PWD/Viction/build/bin/bootnode

Setup Nodes and Accounts

Create a file to store password to encrypt/decrypt private key in plain text:

echo [YOUR_PASSWORD] >> $HOME/tomo/password.txt

You can either create new keypair or import private key for your node:

tomo account new --password $HOME/tomo/password.txt --datadir $HOME/tomo/node1

Repeat the process for node2, node3 and node4.

Customize genesis block using the `puppeth` tool

Run puppeth command and answer questions about your private chain as follows:

puppeth

Set chain name: Tomo
Configure new genesis: 2
Select POSV consensus: 3
Set block time (default 2 seconds): Enter
Set reward of each epoch: 250
Set addresses to be first masternode: Any address
Set account to seal: Address of Node 1, Node 2, Node 3, Node 4
Set the number of blocks of each epoch (default 900): Enter
Set gap (How many blocks before checkpoint need to prepare new masternodes set ?): 5
Set foundation wallet address: Enter
Account confirm Foundation MultiSignWallet: 2 or more addresses
Require for confirm tx in Foundation MultiSignWallet: 1
Account confirm Team MultiSignWallet: 2 or more addresses
Require for confirm tx in Team MultiSignWallet: 1
Enter swap wallet address for fund 55 million VIC: Any address
Enter account be pre-funded: Any address, should be at least 1
Enter Network ID: Any number
Export genesis file
- Select 2. Manage existing genesis
- Select 2. Export genesis configuration
- Enter genesis filename (example): $HOME/tomo/genesis.json
Control + C to exit

Initialize Your Private Chain with Above Genesis Block

tomo init $HOME/tomo/genesis.json --datadir $HOME/tomo/node1
tomo init $HOME/tomo/genesis.json --datadir $HOME/tomo/node2
tomo init $HOME/tomo/genesis.json --datadir $HOME/tomo/node3
tomo init $HOME/tomo/genesis.json --datadir $HOME/tomo/node4

Setup Bootnode

Initialize bootnode key

bootnode -genkey bootnode.key

Start bootnode and copy bootnode information

bootnode -nodekey ./bootnode.key

enode://7e59324b1e54f8c282719465eb96786fb3a04a0265deee2cdb0f62e912337ca6f118d0c91f7ebfae6f5c17825205279249cf7ff65ae54d0a1a8908ef16f80f63@[::]:30301

As in this example, all nodes are running in the same machine, so the enode IP can be set to 127.0.0.1. From the above example: enode://7e59324b1e54f8c282719465eb96786fb3a04a0265deee2cdb0f62e912337ca6f118d0c91f7ebfae6f5c17825205279249cf7ff65ae54d0a1a8908ef16f80f63@127.0.0.1:30301

Start Masternode

Start Masternode 1

tomo --networkid [YOUR_NETWORK_ID] --identity "NODE1" \
     --rpc --rpcaddr 0.0.0.0 --rpcport 1545 --rpccorsdomain "*" --rpcvhosts "*" --rpcapi "db,debug,eth,net,personal,web3" \
     --ws --wsaddr 0.0.0.0 --wsport 1546 --wsorigins "*" \
     --syncmode "full" --gcmode "archive" --port 10303 --bootnodes [YOUR_BOOTNODE_INFORMATION] \
     --mine --password [YOUR_PASSWORD_FILE_TO_UNLOCK_YOUR_ACCOUNT] --unlock 0 \
     --datadir $HOME/tomo/node1 \
     console

Start Masternode 2

tomo --networkid [YOUR_NETWORK_ID] --identity "NODE2" \
     --rpc --rpcaddr 0.0.0.0 --rpcport 2545 --rpccorsdomain "*" --rpcvhosts "*" --rpcapi "db,debug,eth,net,personal,web3" \
     --ws --wsaddr 0.0.0.0 --wsport 2546 --wsorigins "*" \
     --syncmode "full" --gcmode "archive" --port 20303 --bootnodes [YOUR_BOOTNODE_INFORMATION] \
     --mine --password [YOUR_PASSWORD_FILE_TO_UNLOCK_YOUR_ACCOUNT] --unlock 0 \
     --datadir $HOME/tomo/node2 \
     console

Start Masternode 3

tomo --networkid [YOUR_NETWORK_ID] --identity "NODE3" \
     --rpc --rpcaddr 0.0.0.0 --rpcport 3545 --rpccorsdomain "*" --rpcvhosts "*" --rpcapi "db,debug,eth,net,personal,web3" \
     --ws --wsaddr 0.0.0.0 --wsport 3546 --wsorigins "*" \
     --syncmode "full" --gcmode "archive" --port 30303 --bootnodes [YOUR_BOOTNODE_INFORMATION] \
     --mine --password [YOUR_PASSWORD_FILE_TO_UNLOCK_YOUR_ACCOUNT] --unlock 0 \
     --datadir $HOME/tomo/node3 \
     console

Start Masternode 4

tomo --networkid [YOUR_NETWORK_ID] --identity "NODE4" \
     --rpc --rpcaddr 0.0.0.0 --rpcport 4545 --rpccorsdomain "*" --rpcvhosts "*" --rpcapi "db,debug,eth,net,personal,web3" \
     --ws --wsaddr 0.0.0.0 --wsport 4546 --wsorigins "*" \
     --syncmode "full" --gcmode "archive" --port 40303 --bootnodes [YOUR_BOOTNODE_INFORMATION] \
     --mine --password [YOUR_PASSWORD_FILE_TO_UNLOCK_YOUR_ACCOUNT] --unlock 0 \
     --datadir $HOME/tomo/node4 \
     console

Some explanations on the flags

--networkid: our testnet network ID.
--identity: your full-node's name.
--rpc, --rpcaddr, --rpcport, --rpccorsdomain, --rpcvhosts: your full-node will accept RPC requests at 8545 TCP.
--ws, --wsaddr, --wsport, --wsorigins: your full-node will accept Websocket requests at 8546 TCP.
--synmode: blockchain sync mode ("fast", "full", or "light". More detail: https://github.com/BuildOnViction/Viction/blob/master/eth/downloader/modes.go#L24)
--gcmode: blockchain garbage collection mode ("full", "archive")
--port: your full-node's listening port (default to 30303)
--bootnode: bootnode information to help to discover other nodes in the network
--mine: your full-node wants to register to be a candidate for masternode selection.
--password: your account's password.
--datadir: path to your data directory created above.
--verbosity: log level from 1 to 5. Here we're using 4 for debug messages

To see all flags usage

tomo --help

Connect to other node manually

We'll try to let node2 to connect to node1.

Get node info

Connect to node1 ipc

tomo attach $HOME/node1/tomo.ipc

In the newly open prompt, run the following command:

admin.nodeInfo

As in the example, we can see enode information of node1. Copy this information for later use.

For example enode://89a5e91d30461641c4ede519c065b2f1e6d23a36d45e2d953e0ec9fa75e516517a0d4964489e07b73a7fa48e67d42fb2498ba46fe1a814c42ec0ad3257ced47a@[::]:10303

As in this example, all nodes are running in the same machine, so the enode IP can be set to 127.0.0.1. From the above example: enode://89a5e91d30461641c4ede519c065b2f1e6d23a36d45e2d953e0ec9fa75e516517a0d4964489e07b73a7fa48e67d42fb2498ba46fe1a814c42ec0ad3257ced47a@127.0.0.1:10303

Exit node1 ipc prompt by this command:

quit

Add peer for your node

Connect to node2 ipc

tomo attach $HOME/node2/tomo.ipc

In the newly open prompt, connect to other node by their enode (which we get from the previous step) using the following command:

admin.addPeer("enode://89a5e91d30461641c4ede519c065b2f1e6d23a36d45e2d953e0ec9fa75e516517a0d4964489e07b73a7fa48e67d42fb2498ba46fe1a814c42ec0ad3257ced47a@127.0.0.1:10303")

Now check if we added peer sucessfully:

admin.peers

Exit node2 ipc prompt by this command:

quit

Repeat this step for other nodes.

Check Your Private Chain

Connect ipc

tomo attach $HOME/tomo/node1/tomo.ipc

admin.nodeInfo
eth.getBlock(0)
eth.getBlock(1)

Connect rpc

tomo attach tomo attach http://localhost:1545

eth.getBlock(0)
eth.getBlock(1)

Verify Checkpoints

Wait about 30 minutes to see if your chain passes the first checkpoint

tomo attach http://0.0.0.0:1545

eth.getBlock(900)

Troubleshooting

Reset your chain

rm -rf $HOME/tomo/node1/tomo $HOME/tomo/node1/tomox
rm -rf $HOME/tomo/node2/tomo $HOME/tomo/node2/tomox
rm -rf $HOME/tomo/node3/tomo $HOME/tomo/node3/tomox
rm -rf $HOME/tomo/node4/tomo $HOME/tomo/node4/tomox
tomo init $HOME/tomo/genesis.json --datadir $HOME/tomo/node1
tomo init $HOME/tomo/genesis.json --datadir $HOME/tomo/node2
tomo init $HOME/tomo/genesis.json --datadir $HOME/tomo/node3
tomo init $HOME/tomo/genesis.json --datadir $HOME/tomo/node4

Note: we use the Gnosis Multisig Wallet: https://github.com/gnosis/MultiSigWallet

PreviousCLI Commands

Last updated 1 year ago

hashtagSetup environment

hashtagInstall Golang

hashtagBuild Tomo from source

hashtagSetup Nodes and Accounts

hashtagCustomize genesis block using the puppeth tool

hashtagInitialize Your Private Chain with Above Genesis Block

hashtagSetup Bootnode

hashtagStart Masternode

hashtagConnect to other node manually

hashtagGet node info

hashtagAdd peer for your node

hashtagCheck Your Private Chain

hashtagTroubleshooting