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I am new to blockchain and was trying to create two nodes with one bootnode.

bootnode is successfully created

bootnode:

command used in bootnode

bootnode -nodekey ./boot.key -verbosity 7 -addr 127.0.0.1:30301

node1 is also running

command used in node 1

geth --networkid 14333 --datadir ./data --bootnodes enode://[email protected]:0?discport=30301 --port 30303 --ipcdisable --syncmode 'full' --http --allow-insecure-unlock --http.corsdomain “*” --http.port 8546 --unlock '0xxxxx' --password password.txt --mine console

node2

command used for node 2

geth --networkid 14333 --datadir ./data --bootnodes enode://[email protected]:0?discport=30301 --port 30304 --ipcdisable --syncmode 'full' --http --allow-insecure-unlock --http.corsdomain “*” --http.port 8547 --unlock 'xxxxx' --password password.txt --mine console

is showing the following error

Fatal: Error starting protocol stack: listen tcp 127.0.0.1:8551: bind: Only one usage of each socket address (protocol/network address/port) is normally permitted.

Kindly provide a solution to address this issue. Thanks in advance

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3 Answers 3

Reset to default
3

If you run geth --help

you will see that 8551 is the default port of --authrpc.port

--authrpc.port value (default: 8551)

So you could specify a different --authrpc.port for node 1 to node 3

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2

Replace --http.port 8547 to --authrpc.port 8547. It's worked for me.

geth --networkid 14333 --datadir ./data --bootnodes enode://[email protected]:0?discport=30301 --port 30304 --ipcdisable --syncmode 'full' --http --allow-insecure-unlock --http.corsdomain “*” --authrpc.port 8547 --unlock 'xxxxx' --password password.txt --mine console

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0

Just add --authrpc.port 8553 to the command.

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  • 1
    If you are answering an old question you have to be more clear than existing answers. Can you explain the reason behind using that command line? Do you know what it does? Commented Mar 29, 2023 at 15:36

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