Light Node

Install

This document will guide you how to install Meeda light node.

Install from source code

Installation of Meeda light node includes the following steps:

1. Delete all the local dependency libraries include meeda-node, and download them again.

   cd $HOME
   ### delete all the local dependency libraries include Meeda-node
   rm -rf meeda-node did-solidity go-did-sdk memov2-contractsv2 go-mefs-v2 mefs-relay memo-go-contracts-v2
   ### download dependency libraries (GitHub)
   git clone https://github.com/memoio/did-solidity.git
   git clone https://github.com/memoio/go-did-sdk.git
   git clone https://github.com/memoio/memov2-contractsv2.git
   git clone https://github.com/memoio/go-mefs-v2.git
   git clone https://github.com/memoio/mefs-relay.git
   git clone https://github.com/memoio/memo-go-contracts-v2.git
   ### git checkout to the newest branch(go-mefs-v2)
   cd go-mefs-v2
   git checkout 2.7.4
   cd ..
   ## git checkout to the newest branch(did-solidity)
   cd did-solidity
   git checkout meeda-v1.2.0
   cd ..
   ## git checkout to the newest branch(go-did-sdk)
   cd go-did-sdk
   git checkout meeda-v2.0.2
   cd ..
   ### download meeda-node
   git clone https://github.com/memoio/meeda-node.git
   ### 
   cd meeda-node
   ### git checkout to the newest branch
   git checkout 1.2.0

2. Compile meeda-node

   CGO_ENABLED=1 make build

3. Install meeda-node

   make install

4. Check if the meeda-node has been installed successfully

   meeda version

   This command will print the version information, git commit information and compilation date of meeda-node.

You have installed meeda-node, and then you need to deploy meeda-node to access the data availability network of Meeda.

Deploy

Meeda light node will verify the KZG proofs submitted by Meeda Storage nodes, if the proofs are wrong, then light node will launch multiple rounds of challenges.

General users can access and connect to data availability network of Meeda by Meeda light node. Meeda light node contains the following features:

• Upload and download data.

• Synchronize information of uploaded data, includes data commitment, size and expiration.

• Synchronize KZG aggregation certificate information.

• Verify KZG aggregation certificate information, if the certificcate is found to be incorrect, multiple rounds of challenges will be initiated.

General users deploy light node and then can gain profits through challenge.

Run Light Node

You need to set sk parameter when run Meeda light node. sk is used to sign the transactions to Ethereum.

After running Meeda light node, its rpc port will be bounded to 8082.

run on product chain

meeda light run --sk=<private key>

run on dev chain

meeda light run --chain=dev --sk=<private key>

Close Meeda Light Node

To quit light node normally, please use Control + C command on the running terminal.