title: implement flask-healthz for python3
body: <p>I am trying to implement flask-healthz (<a href="https://pypi.org/project/flask-healthz/" rel="nofollow noreferrer">https://pypi.org/project/flask-healthz/</a>) for my python application to get return on liveness and rediness probes. But somehow it doesn't work for me. Below is my code snippet :</p>
  <pre><code>from flask import Flask
  from flask_healthz import healthz
  from flask_healthz import HealthError
  
  def printok():
      print(&quot;Everything is fine&quot;)
  
  app = Flask(__name__)
  app.register_blueprint(healthz, url_prefix=&quot;/healthz&quot;)
  
  def liveness():
      try:
          printok()
      except Exception:
          raise HealthError(&quot;Can't connect to the file&quot;)
  
  def readiness():
      try:
          printok()
      except Exception:
          raise HealthError(&quot;Can't connect to the file&quot;)
  
  HEALTHZ = {
      &quot;live&quot;: &quot;yourapp.checks.liveness&quot;,
      &quot;ready&quot;: &quot;yourapp.checks.readiness&quot;,
  }
  
  @app.route(&quot;/&quot;)
  def hello():
      return &quot;Hello World!&quot;
  
  if __name__ == &quot;__main__&quot;:
      app.run(host='0.0.0.0', port=5000)
  </code></pre>
  <p>And the output to the code is something like below :</p>
  <pre><code>(app-root) curl http://localhost:5000/ 
  127.0.0.1 - - [02/Jun/2021 01:02:56] &quot;GET / HTTP/1.1&quot; 200 -
  Hello World! 
  
  
  
  (app-root) curl http://localhost/yourapp/healthz/live
  curl: (7) Failed to connect to localhost port 80: Connection refused
  
  
  (app-root) curl http://localhost:5000/yourapp/healthz/live
  127.0.0.1 - - [02/Jun/2021 01:03:23] &quot;GET /yourapp/healthz/live HTTP/1.1&quot; 404 -
  &lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 3.2 Final//EN&quot;&gt;
  &lt;title&gt;404 Not Found&lt;/title&gt;
  &lt;h1&gt;Not Found&lt;/h1&gt;
  &lt;p&gt;The requested URL was not found on the server. If you entered the URL manually please check your spelling and try again.&lt;/p&gt;
  
  
  (app-root) curl http://localhost:5000/yourapp/healthz/ready
  127.0.0.1 - - [02/Jun/2021 01:03:37] &quot;GET /yourapp/healthz/ready HTTP/1.1&quot; 404 -
  &lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 3.2 Final//EN&quot;&gt;
  &lt;title&gt;404 Not Found&lt;/title&gt;
  &lt;h1&gt;Not Found&lt;/h1&gt;
  &lt;p&gt;The requested URL was not found on the server. If you entered the URL manually please check your spelling and try again.&lt;/p&gt;
  
  
  (app-root) curl http://localhost:5000/healthz/readiness
  127.0.0.1 - - [02/Jun/2021 01:04:02] &quot;GET /healthz/readiness HTTP/1.1&quot; 404 -
  &lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 3.2 Final//EN&quot;&gt;
  &lt;title&gt;404 Not Found&lt;/title&gt;
  &lt;h1&gt;Not Found&lt;/h1&gt;
  &lt;p&gt;The readiness check endpoint is not setup&lt;/p&gt;
  
  
  (app-root) curl http://localhost:5000/healthz/liveness
  127.0.0.1 - - [02/Jun/2021 01:04:10] &quot;GET /healthz/liveness HTTP/1.1&quot; 404 -
  &lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 3.2 Final//EN&quot;&gt;
  &lt;title&gt;404 Not Found&lt;/title&gt;
  &lt;h1&gt;Not Found&lt;/h1&gt;
  &lt;p&gt;The liveness check endpoint is not setup&lt;/p&gt;
  (app-root) 
  </code></pre>
  <p>Is there something I am doing wrong. I tried to run the same in Openshift well but no luck.</p>
  <p>I would appriciate if there is some working example.</p>