Not able to start testrpc for Ethereum truffle

Question

I am learning about truffle metamask and there is a step to start testrpc. The command is testrpc. But when I run it, I am getting the following error. 

Error: listen EADDRINUSE :::8545

    at Object._errnoException (util.js:1022:11)

    at _exceptionWithHostPort (util.js:1044:20)

    at Server.setupListenHandle [as _listen2] (net.js:1367:14)

    at listenInCluster (net.js:1408:12)

    at Server.listen (net.js:1492:7)

    at Server.server.listen (/usr/local/lib/node_modules/ethereumjs-testrpc/build/cli.node.js:106030:17)

    at Object.<anonymous> (/usr/local/lib/node_modules/ethereumjs-testrpc/build/cli.node.js:50244:8)

    at __webpack_require__ (/usr/local/lib/node_modules/ethereumjs-testrpc/build/cli.node.js:21:30)

    at /usr/local/lib/node_modules/ethereumjs-testrpc/build/cli.node.js:64:18

    at Object.<anonymous> (/usr/local/lib/node_modules/ethereumjs-testrpc/build/cli.node.js:67:10)

Any ideas?

Answer 1

Hey. It seems like you already have testrpc running. Check it using the ps command:

$ps

PID TTY          TIME CMD

  4195 pts/0    00:00:00 bash

  5551 pts/0    00:00:01 node

  5627 pts/0    00:00:00 ps

Here, the process node (5551) is the testrpc. Kill it using this command and you will be able to start testrpc just fine:

kill -9 <pid>

In my case, it is

kill -9 5551