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Set up SSL

    Old implementation

    The following is the old, manual, way of installing SSL certs.

    Tomcat 7 automatic installation

    Using the TS commandline tools, you specify the domain and your email

      tsinstallssl.sh server.acme.com [email protected]

    After a couple of minutes you will be rquired to enter the domain an email again, and accept the terms of service

    Tomcat 7 manual installation

    Install and configure letsencrypt

    Download an build certbot (letsencrypt client)

    sudo yum -y install python27-devel git (deprecated)
    sudo yum -y install python36 python36-pip
sudo yum -y install git-all
sudo git clone https://github.com/letsencrypt/letsencrypt /opt/letsencrypt
/opt/letsencrypt/letsencrypt-auto --debug --agree-tos

    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 = [email protected]" >> /etc/letsencrypt/config.ini

    Generate PKCS12 certificate

    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 to 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
chmod 755 bundle.pfx
chmod 755 /etc/letsencrypt/live
      Press: ctrl + d

    Install certificate in Tomcat

    Edit Tomcat configuration

    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"/>

    Reboot the server

    service tomcat7 restart

    Automated renewals

    Before starting test that the renewal process works

    /opt/letsencrypt/letsencrypt-auto renew --dry-run

    Make sure the path is accessible from cron

     sudo chmod go+x /etc/letsencrypt/archive
 sudo chmod go+x /etc/letsencrypt/live

    Make a script file

    sudo nano /usr/bin/tsrefreshcerts.sh

    .... containing the following commands

    /opt/letsencrypt/letsencrypt-auto renew
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
/usr/bin/tstomcatrestart.sh

    Now add a job to the crontab

     sudo crontab -l > tempcron
 echo "0 0 1 * * /usr/bin/tsrefreshcerts.sh" >> tempcron
 sudo crontab tempcron
 rm tempcron

    Problems with Amazon Linux?

    In case the autorenewal process fails try updating the dependencies and pip

     sudo /opt/eff.org/certbot/venv/bin/pip2 install cryptography zope interface 
 sudo /opt/eff.org/certbot/venv/bin/pip2 install --upgrade pip
 sudo rsync -avz /opt/eff.org/certbot/venv/lib64/python2.7/dist-packages/ /opt/eff.org/certbot/venv/lib/python2.7/dist-packages/


    Still got problems with Amazon Linux?

    In case certbot cant find the root folder try and run it manually

     sudo /opt/letsencrypt/letsencrypt-auto certonly

    Choose the following values when prompted

     2: Place files in webroot directory (webroot)
 <domain>  
 2: Renew & replace the cert (may be subject to CA rate limits)
 /usr/share/tomcat7/webapps/ROOT/


    Need manual crontab install?

    Steps

    • sudo crontab -e
    • press INSERT
    • move to bottom of file
    • paste this
      0 0 1 * * /usr/bin/tsrefreshcerts.sh
    • press ESC
    • press :wq
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