AMBARI-15028. Critical alert for Kafka when using custom port(stack 2.3 and higher).(vbrodetskyi)

ambari-agent/src/main/python/ambari_agent/alerts/port_alert.py

@@ -102,7 +102,7 @@ class PortAlert(BaseAlert):
 
 
     host = BaseAlert.get_host_from_url(uri_value)
-    if host is None:
+    if host is None or host == "localhost" or host == "0.0.0.0":
       host = self.host_name
 
     try:

ambari-server/src/main/resources/stacks/HDP/2.3/services/KAFKA/alerts.json

@@ -0,0 +1,32 @@
+{
+  "KAFKA": {
+    "service": [],
+    "KAFKA_BROKER": [
+      {
+        "name": "kafka_broker_process",
+        "label": "Kafka Broker Process",
+        "description": "This host-level alert is triggered if the Kafka Broker cannot be determined to be up.",
+        "interval": 1,
+        "scope": "HOST",
+        "source": {
+          "type": "PORT",
+          "uri": "{{kafka-broker/listeners}}",
+          "default_port": 6667,
+          "reporting": {
+            "ok": {
+              "text": "TCP OK - {0:.3f}s response on port {1}"
+            },
+            "warning": {
+              "text": "TCP OK - {0:.3f}s response on port {1}",
+              "value": 1.5
+            },
+            "critical": {
+              "text": "Connection failed: {0} to {1}:{2}",
+              "value": 5.0
+            }
+          }
+        }
+      }
+    ]
+  }
+}