title: Let's Encrypt: How to manually test the certbot renewal process?
body: <p>I have a working setup where <a href="https://letsencrypt.org/" rel="noreferrer">Let's Encrypt</a> certificates are generated with <a href="https://certbot.eff.org/" rel="noreferrer">certbot</a>. I wonder how you effectively test whether the renewal will work in production.</p>
  
  <p>The certificates last for 90 days. Is there a way to reduce the lifespan to, for instance, 10 minutes, to see if the renewal works? (Using the staging system for that is fine.)</p>
  
  <p>If you have an alternative approach how to make sure that your renewal code works (without having to wait for 90 days), it would also be appreciated.</p>