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Manually setup a NewChain read-only node WITHOUT root privilege

无需root权限手工运行NewChain只读节点

The original tutorial requires sudo privilege to install and run a newchain read-only node.

This short how-to tells about how to do it with a normal user account.

Preparation

  1. Hardware
    • 8GB memory or more (it is really memory hungry)
    • 100GB storage or more
  2. OS
    • Ubuntu 20.04 LTS

Create working directory /home/newchain

$ cd ~
$ mkdir newchain
$ cd newchain

Download runtime and configurations

Know the latest version:

$ wget https://release.cloud.diynova.com/newton/newchain/latest.txt
$ export newchain_version=`cat latest.txt`

Download the runtime

$ wget https://release.cloud.diynova.com/newton/newchain/${newchain_version}/linux/geth
$ wget https://release.cloud.diynova.com/newton/newchain/${newchain_version}/linux/geth.sha256

and verify it:

$ sha256sum -c geth.sha256

then make it executable:

$ chmod +x geth

Download the configuraiton pack

$ export newchain_deploy_latest_version="v20200526"
$ export newchain_mainnet_deploy_file="newchain-mainnet-$newchain_deploy_latest_version.tar.gz"
$ wget https://release.cloud.diynova.com/newton/newchain-deploy/mainnet/${newchain_mainnet_deploy_file}
$ wget https://release.cloud.diynova.com/newton/newchain-deploy/mainnet/${newchain_mainnet_deploy_file}.sha256

and verify it:

$ sha256sum -c ${newchain_mainnet_deploy_file}.sha256

then unpack it:

$ tar xvfz newchain-mainnet-v20200526.tar.gz

Create the data directory and initialize it

$ mkdir mainnet/nodedata
$ ./geth --datadir ./mainnet/nodedata init mainnet/share/newchainmain.json

Edit the configuration file

Modify mainnet/conf/node.toml with the following changes:

  1. Change DatasetDir to /home/{USERNAME}/newchain/.ethash
  2. Change DataDir to /home/{USERNAME}/newchain/mainnet/nodedata

Please replace the {USERNAME} above with your linux account name.

Start the node

$ ./geth --config ./mainnet/conf/node.toml

Bingo. You should have seen the node is started to download the blockchain data.

Connect to the node and check the status

$ ./geth attach ~/newchain/mainnet/nodedata/geth.ipc

Type eth.syncing and you'll see:

> eth.syncing
{
  currentBlock: 88412,
  highestBlock: 15596231,
  knownStates: 0,
  pulledStates: 0,
  startingBlock: 0
}

Well done.

Reference

https://github.com/newtonproject/newchain-deploy

Author

Evan Liu