get the kubernetes default config, freeze pip dependencies

app.py

@@ -44,7 +44,7 @@ def __init__(self):
         else:  # App is running on a developer workstation
             kubernetes.config.load_kube_config()
 
-        self.k8s_config = kubernetes.client.Configuration()
+        self.k8s_config = kubernetes.client.Configuration().get_default_copy()
         self.service_account_token = self.k8s_config.api_key['authorization'].partition(' ')[2]
 
 
@@ -163,5 +163,6 @@ def log_message(self, format, *args):
 
 
 if __name__ == '__main__':
+    # only listen for connections from ose-oauth-proxy in the same pod (see template/openshift-prometheus-proxy.yaml)
     httpd = ProxyHTTPServer(('127.0.0.1', 8080), partial(ProxyMetricsHandler, ProxyConfig()))
     httpd.serve_forever()

requirements.in

@@ -0,0 +1 @@
+openshift

requirements.txt

@@ -1 +1,67 @@
-openshift
+#
+# This file is autogenerated by pip-compile with python 3.6
+# To update, run:
+#
+#    pip-compile requirements.in
+#
+cachetools==4.2.4
+    # via google-auth
+certifi==2021.10.8
+    # via
+    #   kubernetes
+    #   requests
+charset-normalizer==2.0.7
+    # via requests
+google-auth==2.3.3
+    # via kubernetes
+idna==3.3
+    # via requests
+jinja2==3.0.2
+    # via openshift
+kubernetes==12.0.1
+    # via openshift
+markupsafe==2.0.1
+    # via jinja2
+oauthlib==3.1.1
+    # via requests-oauthlib
+openshift==0.12.1
+    # via -r requirements.in
+pyasn1==0.4.8
+    # via
+    #   pyasn1-modules
+    #   rsa
+pyasn1-modules==0.2.8
+    # via google-auth
+python-dateutil==2.8.2
+    # via kubernetes
+python-string-utils==1.0.0
+    # via openshift
+pyyaml==6.0
+    # via kubernetes
+requests==2.26.0
+    # via
+    #   kubernetes
+    #   requests-oauthlib
+requests-oauthlib==1.3.0
+    # via kubernetes
+rsa==4.7.2
+    # via google-auth
+ruamel.yaml==0.17.17
+    # via openshift
+ruamel.yaml.clib==0.2.6
+    # via ruamel.yaml
+six==1.16.0
+    # via
+    #   google-auth
+    #   kubernetes
+    #   openshift
+    #   python-dateutil
+urllib3==1.26.7
+    # via
+    #   kubernetes
+    #   requests
+websocket-client==1.2.1
+    # via kubernetes
+
+# The following packages are considered to be unsafe in a requirements file:
+# setuptools