Comment on page
Local OJX Network

​
See also : https://github.com/ethereum/go-ethereum/wiki/Private-network​
Setting up your OJX Node(s)
1. Prereq : Install Geth
Review the guide here​
2. Prereq : create /projects
Create a /projects symbolic link (Note: This step is simply so "/projects" can be used in all other commands, instead you could use full paths, or set an env var)
$ mkdir <my projects folder>
$ sudo ln -s <my projects folder> /projects
3. Create local_ethereum_blockchain folder
$ mkdir /projects/local_ethereum_blockchain
4. Create the genesis block config
Create this file : /projects/local_ethereum_blockchain/genesis.json
With the following contents :
{
     "config": {
       "chainId": 1000,
       "homesteadBlock": 0,
       "eip155Block": 0,
       "eip158Block": 0
                },
     "nonce": "0x0000000000000061",
     "timestamp": "0x0",
     "parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
     "gasLimit": "0x8000000",
     "difficulty": "0x100",
     "mixhash": "0x0000000000000000000000000000000000000000000000000000000000000000",
     "coinbase": "0x3333333333333333333333333333333333333333",
     "alloc": {}
}
(info about the genesis file)
5. Initialise an Ethereum node
$ geth --datadir /projects/local_ethereum_blockchain/node1 init /projects/local_ethereum_blockchain/genesis.json
6. Start that Ethereum node
$ geth --datadir /projects/local_ethereum_blockchain/node1 --networkid 1000 console
7. Initialise another Ethereum node
$ geth --datadir /projects/local_ethereum_blockchain/node-2 init /projects/local_ethereum_blockchain/genesis.json
8. Start the 2nd Ethereum node
$ geth --datadir /projects/local_ethereum_blockchain/node-2 --port 30304 --nodiscover --networkid 1000 console
9. Connect one node to the other
In one geth console :
> admin.nodeInfo.enode
In the other console :
> admin.addPeer( <the enode value from the first console> )
Useful geth commands
Node info
> admin.nodeInfo
Peers
Show peers
> admin.peers
How many peers ?
> admin.peers.length
Create an account
You need an account to do be able to do things like mining
> personal.newAccount()
And make sure your remember/save the password!
Unlock account
Neccessary before some actions
> personal.unlockAccount( eth.accounts[0] )
Start mining
> miner.start(1)
The first block may take a while to mine, allow a few minutes
Stop mining
> miner.stop()
Current block number
> eth.blockNumber
Details of current block
> eth.getBlock( eth.blockNumber )
Which node minded the last block
> eth.getBlock(eth.blockNumber).miner
Account balance, in ether
> web3.fromWei(eth.getBalance(eth.accounts[0]))
Transfer ether between accounts
First get the account numbers by doing
> eth.accounts
Then unlock the account you are sending from
> personal.unlockAccount( <from account> )
eg.
> personal.unlockAccount(eth.accounts[0])
Finally transfer 1 ether
> eth.sendTransaction({from: "<from account>", to: "<to account>", value: web3.toWei(1, "ether")})
Exit
> exit
(This will also stop the node from running if it was started using $ geth console (as opposed to $ geth attach))
Connect to other nodes on your network
1.Get the IP of the node : $ ifconfig|grep netmask|awk '{print $2}'
2.Get the enode of the node : > admin.nodeInfo.enode
3.REPLACE [::] in the enode string with the [<ip address>]
4.On your console > admin.addPeer(< the enode string with the ip address in it>)
Deploy NFT
Next - OJA SMART CHAIN (OJX20)
FAQ
Last modified 1yr ago