Fix ID age query and template

sample-config/pgmon-metrics.yml

@@ -22,7 +22,7 @@ metrics:
   max_frozen_age:
     type: row
     query:
-      0: SELECT max(age(datfrozenxid)), max(mxid_age(datminmxid)) FROM pg_database
+      0: SELECT max(age(datfrozenxid)) AS xid_age, max(mxid_age(datminmxid)) AS mxid_age FROM pg_database
 
   # Per-database metrics
   db_stats:
@@ -47,12 +47,6 @@ metrics:
     test_args:
       repid: 127.0.0.1_test_rep
 
-  # Debugging
-  sleep:
-    type: value
-    query:
-      0: SELECT now(), pg_sleep(5);
-
   # Per-slot metrics
   slot_stats:
     type: row

zabbix_templates/pgmon_templates.yaml

@@ -11,6 +11,44 @@ zabbix_export:
       groups:
         - name: 'My Templates'
       items:
+        - uuid: cc4a50ca681b4c4fb8c1c98f4bc81c96
+          name: 'Max Frozen MXID Age'
+          type: DEPENDENT
+          key: pgmon.age.mxid
+          delay: '0'
+          history: 90d
+          description: 'Maximum age of any frozen MXID in any database'
+          preprocessing:
+            - type: JSONPATH
+              parameters:
+                - $.mxid_age
+            - type: MATCHES_REGEX
+              parameters:
+                - '^[0-9]+$'
+          master_item:
+            key: 'pgmon[max_frozen_age]'
+          tags:
+            - tag: Application
+              value: PostgreSQL
+        - uuid: 2fa86d8c4a3a481e856a9414c5c70216
+          name: 'Max Frozen XID Age'
+          type: DEPENDENT
+          key: pgmon.age.xid
+          delay: '0'
+          history: 90d
+          description: 'Maximum age of any frozen XID in any database'
+          preprocessing:
+            - type: JSONPATH
+              parameters:
+                - $.xid_age
+            - type: MATCHES_REGEX
+              parameters:
+                - '^[0-9]+$'
+          master_item:
+            key: 'pgmon[max_frozen_age]'
+          tags:
+            - tag: Application
+              value: PostgreSQL
         - uuid: de1fa757395440118026f4c7a7c4ebbe
           name: 'PostgreSQL latest supported version'
           type: DEPENDENT
@@ -71,15 +109,14 @@ zabbix_export:
             - tag: Application
               value: PostgreSQL
         - uuid: 8706eccb7edc4fa394f552fc31f401a9
-          name: 'Max Frozen XID Age'
+          name: 'PostgreSQL ID Age Info'
           type: HTTP_AGENT
           key: 'pgmon[max_frozen_age]'
-          history: 90d
-          description: 'Maximum age of any frozen XID in any database'
-          preprocessing:
-            - type: MATCHES_REGEX
-              parameters:
-                - '^[0-9]+$'
+          delay: 5m
+          history: '0'
+          value_type: TEXT
+          trends: '0'
+          description: 'Maximum age of any frozen XID and MXID in any database'
           url: 'http://localhost:{$AGENT_PORT}/max_frozen_age'
           tags:
             - tag: Application