fix(alloy): fix log level parser

- remove parser for JSON and logfmt, and add regex expression to extract the level of log

ansible/playbooks/console/site.yaml

@@ -115,18 +115,10 @@
       become: true
       tags: ["init", "site", "install-packages"]
 
-    - name: Install CLI tools
+    - name: Set CLI tools
       ansible.builtin.include_role:
         name: "console"
         tasks_from: "services/set_cli_tools"
         apply:
           tags: ["init", "site", "tools"]
       tags: ["init", "site", "tools"]
-
-    - name: Install chromium with font
-      ansible.builtin.include_role:
-        name: "console"
-        tasks_from: "services/set_chromium"
-        apply:
-          tags: ["init", "site", "chromium"]
-      tags: ["init", "site", "chromium"]

config/services/systemd/common/alloy/config.alloy.j2

@@ -203,12 +203,11 @@ loki.relabel "caddy_relabel" {
 loki.process "journal_parser" {
         forward_to = [loki.write.loki.receiver]
         // Severity parsing
-        // If content of log includes "level" information, change the level
-        stage.logfmt {
-            mapping = {
-                "content_level" = "level",
-            }
+        stage.regex {
+            // Regex to extract the log level from the content.
+            expression = "(?i)(?:level[\"\\s:=]+|\\[|\\s|^)(?P<content_level>info|warn|warning|error|debug|fatal|critical|trace)(?:[\"\\]\\s]|$)"
         }
+        
         stage.labels {
             values = {
                 "level" = "content_level",