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Address already in use - bind(2) for "0.0.0.0" port 3000 (Errno::EADDRINUSE) が出たとき

Last updated at Posted at 2020-04-30

エラー内容: Address already in use - bind(2) for "0.0.0.0" port 3000 (Errno::EADDRINUSE)

###解決策
3000portで繋いでいたのでそのプロセスをkillしたら直った。
割とよくあるエラーでいつもコマンドを忘れるのでメモ。。

$ kill -9 $(lsof -i tcp:3000 -t)

lsofコマンドを先にインストールしておいた方がいいかも。

$ apt-get install lsof
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