If you need to verify the version of an RSK node you're working with, the approach depends on whether you have direct access to the node's filesystem or only RPC access. Here's how to handle both scenarios:

When You Can Access the Node's Filesystem Directly #

• Run the RSKJ executable with version flag: Navigate to the directory where your RSKJ JAR file lives, then execute:

  java -jar rskj-core-*.jar --version
  

  This will spit out the exact version number (like 5.3.0) plus build details. If you know the exact JAR name, replace the wildcard with it (e.g., rskj-core-5.3.0.jar).

• Check the node's startup logs: RSK logs its version as soon as it boots up. Open your log file (usually at ~/rsk/logs/rsk.log for default setups) or use grep to filter the relevant line quickly:

  grep "Version" ~/rsk/logs/rsk.log
  

  You’ll see an entry like RSK node starting. Version: 5.3.0 - commit: abc123....

• Quick filename check: If you haven’t renamed the downloaded RSKJ JAR, the filename itself includes the version (e.g., rskj-core-5.3.0.jar). It’s a fast check, though less definitive if the file was renamed later.

When You Only Have RPC Access (No Filesystem Access) #

If you can’t log into the node server but have access to its RPC endpoint, use the web3_clientVersion JSON-RPC method—this is enabled by default on nearly all RSK nodes.

• Using curl from the command line: Send a POST request to your RPC endpoint:

  curl -X POST \
    -H "Content-Type: application/json" \
    --data '{"jsonrpc":"2.0","method":"web3_clientVersion","params":[],"id":1}' \
    http://your-rpc-url:port
  

  The response will include a result like "RSK/v5.3.0/linux-amd64/openjdk64bitservervm-java-11"—the version number is right after RSK/v.

• Using a web3 library: If you’re working in JavaScript, use web3.js to fetch and parse the version:

  const Web3 = require('web3');
  const web3 = new Web3('http://your-rpc-url:port');
  
  async function getNodeVersion() {
    const fullVersion = await web3.clientVersion();
    const versionNumber = fullVersion.split('/')[1].slice(1);
    console.log('RSK Node Version:', versionNumber);
  }
  
  getNodeVersion();
  

  This will extract and print the clean version number for you.

Both methods are reliable, but the RPC approach is your go-to when you don’t have direct server access.

内容的提问来源于stack exchange，提问作者serlokiyo