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 permi

Question

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

bootnode is successfully created

bootnode:

command used in bootnode

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

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node1 is also running

command used in node 1

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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

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node2

command used for node 2

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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

Answer 1

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

Answer 2

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

Answer 3

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