LetsEncrypt SSL

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Installation

Download an build certbot (letsencrypt client)

  sudo yum install python27-devel git
  sudo git clone https://github.com/letsencrypt/letsencrypt /opt/letsencrypt
  /opt/letsencrypt/letsencrypt-auto --debug

Create a config file

  sudo touch /etc/letsencrypt/config.ini
  sudo chmod 777 /etc/letsencrypt/config.ini
  sudo echo "rsa-key-size = 4096" >> /etc/letsencrypt/config.ini
  sudo echo "email = kpe@tempusserva.dk" >> /etc/letsencrypt/config.ini

Now generate a certificate

  sudo mkdir /usr/share/tomcat7/webapps/ROOT
  /opt/letsencrypt/letsencrypt-auto certonly --debug --webroot -w /usr/share/tomcat7/webapps/ROOT -d letsencrypt.tempusserva.dk --config /etc/letsencrypt/config.ini --agree-tos 

Convert pkcs12 format

  sudo -s

  cd /etc/letsencrypt/live/letsencrypt.tempusserva.dk
  openssl pkcs12 -export -out bundle.pfx -inkey privkey.pem -in cert.pem -certfile chain.pem -password pass:TempusServaSecret

  Press: ctrl + d

Next install in Tomcat

  sudo nano  /usr/share/tomcat7/conf/server.xml

          <Connector
          protocol="org.apache.coyote.http11.Http11NioProtocol"
          port="8443" maxThreads="200"
          scheme="https" secure="true" SSLEnabled="true"
          keystoreFile="/etc/letsencrypt/live/letsencrypt.tempusserva.dk/bundle.pfx" keystorePass="TempusServaSecret"
          ciphers="TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_AES_128_CBC_SHA256,TLS_RSA_WITH_AES_128_CBC_SHA"
          clientAuth="false" sslProtocol="TLS" keystoreType="PKCS12"/>

Finally reboot the server

   service tomcat7 restart