#StackBounty: #go-ethereum #private-blockchain #hardforks #clique Is it possible to hard fork a private network to Constantinople?

Bounty: 50

I have a Proof-of-Authority private Ethereum network that has Byzantium EVM version and created by clique engine. I have a single miner that has Geth version: v1.8.27.

{
  "config": {
    "chainId": 23422,
    "homesteadBlock": 1,
    "eip150Block": 2,
    "eip150Hash": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "eip155Block": 3,
    "eip158Block": 3,
    "byzantiumBlock": 4,
    "clique": {
      "period": 15,
      "epoch": 30000
    }
  },
}

Please see my configuration file: custom.json.

When I start geth I get following output:

INFO [07-10|13:46:36.647] Initialised chain configuration          
config="{ChainID: 23422 Homestead: 1 DAO: <nil> DAOSupport: false EIP150: 2
EIP155: 3 EIP158: 3 Byzantium: 4 Constantinople: <nil>  
Petersburg: <nil> Engine: clique}"

I assume since Constantinople: <nil> in the configuration file and I cannot alter the custom configuration file there is no way I can hard fork the private chain.


Here:

The configuration is fixed via constants in the code (see
ChainConfig). A custom configuration can be provided in genesis
specification file, however, this is only applicable when setting up a
new chain.

Hence, currently the only way to make a hard fork in a private network
is to ensure that all participants shutdown/upgrade/restart in a
predefined time slot.

// I have updated the geth version but in general I am not sure to check that whether the private chain is updated.

[Q] I was wondering, is it possible to hard fork a private chain that has different EVM version to Constantinople EVM?


Get this bounty!!!

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