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Ruby で bundle install とか gem install で SSL 証明書のエラーが出る

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OpenSSL::SSL::SSLError: SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed

SSL 証明書を入れてあげることで解決します。

$ brew install curl-ca-bundle
$ ruby -ropenssl -e 'p OpenSSL::X509::DEFAULT_CERT_FILE' # どこに置けばいいのか調べる
$ cp /usr/local/opt/curl-ca-bundle/share/ca-bundle.crt /usr/local/etc/openssl/cert.pem
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