feature: switched pg_buffercache graph to System Memory graph in Mamonsu Dashboard

Author: cuprumtan

mamonsu/plugins/system/linux/memory.py

@@ -36,6 +36,9 @@ class Memory(Plugin):
         ("vmalloc_used", "VmallocUsed", "VMallocUsed - vmaloc() Allocated by Kernel", "CF6518", 1)
     ]
 
+    graph_name_detailed = "System: Server Memory Detailed Overview"
+    graph_name_free_used = "System: Server Free/Used Memory Overview"
+
     def run(self, zbx):
 
         meminfo, result = {}, {}
@@ -93,13 +96,13 @@ def graphs(self, template, dashboard=False):
                 })
         graphs = [
             {
-                "name": "System: Server Memory Detailed Overview",
+                "name": self.graph_name_detailed,
                 "height": 400,
                 "type": 1,
                 "items": all_items
             },
             {
-                "name": "System: Server Free/Used Memory Overview",
+                "name": self.graph_name_free_used,
                 "height": 400,
                 "type": 1,
                 "items": free_used_items

mamonsu/tools/zabbix_cli/dashboard.py

@@ -8,7 +8,6 @@
 from mamonsu.plugins.pgsql.health import PgHealth
 from mamonsu.plugins.pgsql.instance import Instance
 from mamonsu.plugins.pgsql.oldest import Oldest
-from mamonsu.plugins.pgsql.pg_buffercache import PgBufferCache
 from mamonsu.plugins.pgsql.pg_locks import PgLocks
 from mamonsu.plugins.pgsql.replication import Replication
 from mamonsu.plugins.pgsql.wal import Wal
@@ -1052,7 +1051,7 @@ def generate_dashboard(template, uuid):
                                          Connections.graph_name,
                                          PgLocks.graph_name,
                                          Instance.graphs_name["transactions"],
-                                         PgBufferCache.graph_name,
+                                         Memory.graph_name_free_used,
                                          ArchiveCommand.key.format("[" + ArchiveCommand.Items[2][0] + "]"),
                                          Databases.key_autovacumm.format("[]"),
                                          BgWriter.graph_name_buffers,