[kubernets] Kubelet check failing shouldn't stop metrics collection

checks.d/kubernetes.py

@@ -93,8 +93,8 @@ def _perform_kubelet_checks(self, url):
 
         except Exception, e:
             self.log.warning('kubelet check failed: %s' % str(e))
-            self.service_check(service_check_base, AgentCheck.CRITICAL, 'Kubelet check failed: %s' % str(e))
-            raise
+            self.service_check(service_check_base, AgentCheck.CRITICAL,
+                message='Kubelet check failed: %s' % str(e))
 
     def _perform_master_checks(self, url):
         try:
@@ -104,12 +104,15 @@ def _perform_master_checks(self, url):
                 nodename = nodeinfo['name']
                 service_check_name = "{0}.master.{1}.check".format(NAMESPACE, nodename)
                 cond = nodeinfo['status'][-1]['type']
+                minion_name = nodeinfo['metadata']['name']
+                tags = ["minion_name:{0}".format(minion_name)]
                 if cond != 'Ready':
-                    self.service_check(service_check_name, AgentCheck.CRITICAL, cond)
+                    self.service_check(service_check_name, AgentCheck.CRITICAL,
+                        tags=tags, message=cond)
                 else:
-                    self.service_check(service_check_name, AgentCheck.OK)
+                    self.service_check(service_check_name, AgentCheck.OK, tags=tags)
         except Exception, e:
-            self.service_check(service_check_name, AgentCheck.CRITICAL, cond)
+            self.service_check(service_check_name, AgentCheck.CRITICAL, message=str(e))
             self.log.warning('master checks url=%s exception=%s' % (url, str(e)))
             raise
 
@@ -138,7 +141,7 @@ def check(self, instance):
         if instance.get('enable_master_checks', False):
             master_port = instance.get('master_port', DEFAULT_MASTER_PORT)
             master_host = instance.get('master_host', 'localhost')
-            master_url = '%s://%s:%d/nodes' % (method, host, master_port)
+            master_url = '%s://%s:%d/api/v1/nodes' % (method, host, master_port)
             self._perform_master_checks(master_url)
 
         # kubelet health checks

checks/__init__.py

@@ -548,7 +548,7 @@ def service_check(self, check_name, status, tags=None, timestamp=None,
         :param hostname: (optional) str, host that generated the service
                           check. Defaults to the host_name of the agent
         :param check_run_id: (optional) int, id used for logging and tracing
-                             purposes. Don't need to be unique. If not
+                             purposes. Doesn't need to be unique. If not
                              specified, one will be generated.
         """
         if hostname is None:

conf.d/kubernetes.yaml.example

@@ -22,10 +22,6 @@ instances:
   #
    use_histogram: True
   #
-  # Getting the master checks
-  # master_host: localhost
-  # master_port: 8080
-  #
   # Kubelet checks
   # enable_kubelet_checks: true
   # kubelet_port: 10255

tests/checks/mock/test_kubernetes.py

@@ -35,8 +35,7 @@ def test_fail(self):
         }
 
         # Can't use run_check_twice due to specific metrics
-        with self.assertRaises(Exception):
-            self.run_check(config, mocks=mocks, force_reload=True)
+        self.run_check(config, mocks=mocks, force_reload=True)
         self.assertServiceCheck("kubernetes.kubelet.check", status=AgentCheck.CRITICAL)
         self.coverage_report()