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I am runing the mist wallet app.
In Terminal (macos), I also want to start a miner process geth --etherbase 1 --mine --port 0
But geth --mine failed with this error message:
Fatal: Error starting protocol stack: datadir already used by another process
Is there anyway I can have both programs to run concurrently?
This is possible:
1) Start geth in Terminal first:
> geth --mine
2) Launch Mist, but also from Terminal so you can pass commands to make it connect to the IPC created by geth. On my computer, it looks something like this:
> /Applications/Mist.app/Contents/MacOS/Mist --rpc ~/Library/Ethereum/geth.ipc
Note: you need to change the paths above to correspond with where those files are on your computer and where you're calling them from, as well as the network.
The geth.ipc file is only created/shows up after you have started geth.
For example, another example of this with testnet is:
Terminal 1
> geth --testnet --mine
Terminal 2 (from home folder)
> cd /Applications
> Mist.app/Contents/MacOS/Mist --rpc ~/Library/Ethereum/testnet/geth.ipc
Just run command $ps aux | grep "geth" Then you will see some progress about geth. and you can kill them by command #kill -s 9 "PID number".Then restart the geth.
kill -9. It sends a SIGKILL, which could result in a corrupt database. Use either a SIGTERM or SIGINT signal which can be handled gracefully.
Jun 6, 2018 at 6:36
datadir, not sure though.