send memory using fluent-bit

ansible/roles/fluentbit/fluent-bit.conf.j2

@@ -83,17 +83,29 @@
     # storage.backlog.mem_limit 5M
 
 [INPUT]
-    name cpu
+    Name cpu
-    tag  cpu
+    Tag  cpu
 
     # Read interval (sec) Default: 1
-    interval_sec 1
+    Interval_sec 1
+
+[INPUT]
+    Name exec
+    Tag memory
+    Command free -m | tail -2 | tr '\n' ' '
+    Interval_Sec 1
 
 [OUTPUT]
-    name  forward
+    Name forward
-    match *
+    Match *
-    host maestro.dmz
+    Host maestro.dmz
-    port {{ fluent_forward_port }}
+    Port {{ fluent_forward_port }}
+
+[FILTER]
+    Name parser
+    Match memory
+    Key_Name exec
+    Parser free
 
 [FILTER]
     Name record_modifier
@@ -102,6 +114,6 @@
 
 [FILTER]
     Name record_modifier
-    Match *
+    Match cpu
     Allowlist_key hostname
     Allowlist_key cpu_p

ansible/roles/fluentbit/parsers.conf.j2

@@ -0,0 +1,6 @@
+# vi: ft=conf
+[PARSER]
+    Name free
+    Format regex
+    Regex ^Mem:\s+(?<mem_total>\d+)\s+(?<mem_used>\d+)\s+(?<mem_free>\d+)\s+(?<mem_shared>\d+)\s+(?<mem_buff_cache>\d+)\s+(?<mem_available>\d+) Swap:\s+(?<swap_total>\d+)\s+(?<swap_used>\d+)\s+(?<swap_free>\d+)
+    Types mem_total:integer mem_used:integer mem_free:integer mem_shared:integer mem_buff_cache:integer mem_available:integer swap_total:integer swap_used:integer

ansible/roles/fluentbit/tasks/main.yml

@@ -18,3 +18,9 @@
     src: "{{ role_path }}/fluent-bit.conf.j2"
     dest: /etc/fluent-bit/fluent-bit.conf
   notify: restart fluent-bit
+
+- name: Copy fluent-bit parsers configuration
+  template:
+    src: "{{ role_path }}/parsers.conf.j2"
+    dest: /etc/fluent-bit/parsers.conf
+  notify: restart fluent-bit