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Is it possible to modify geth configuration when the node is running? For instance, open a port, add more parameter flag to control geth node functions.

I think maybe there are two ways: One is stop the node and re-launch with new parameters. but not sure it's feasible. the other one is use command api, if it permits, which command can be used to re-configure?

Thanks for you help.

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It depends what you want to change:

There is a console to which you can 'geth attach' with some API

For most of the options you will need to restart, but instead of changing the command line options each time, i would suggest using toml configuration file and modify the options inside the file

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  • Thanks.what's toml configuration file,is there some tool? Need I stop the node when modify the toml configuration file? Besides, can I also modify the parameter set in genesis.json after node launch.
    – Ntydrm
    May 26 '19 at 11:51
  • github.com/ethereum/go-ethereum/wiki/Command-Line-Options in short create one with dumpconfig and load it later with --config <file>
    – KNK
    May 26 '19 at 13:49
  • when modify configuration, need the node stop and then restart with new one,is it correct?
    – Ntydrm
    May 26 '19 at 14:15
  • yes, the config is read on startup (look at it as predefined command line options), so you need to restart
    – KNK
    May 26 '19 at 19:56

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