fix logs (#537)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **New Features**
- Introduced a HelmRelease configuration for monitoring agents in
Kubernetes.
- Added a new section for `fluent-bit` with configurations for readiness
probes, volumes, and log processing.

- **Bug Fixes**
- Enhanced monitoring capabilities with detailed configurations for log
management and external integrations.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/apps/kubernetes/templates/helmreleases/monitoring-agents.yaml

@@ -48,7 +48,6 @@ spec:
         tenant: {{ .Release.Namespace }}
       remoteWrite:
         url: http://vminsert-shortterm.{{ $targetTenant }}.svc:8480/insert/0/prometheus
-
     fluent-bit:
       readinessProbe:
         httpGet:

packages/system/monitoring-agents/values.yaml

@@ -305,3 +305,57 @@ vmagent:
     tenant: tenant-root
   remoteWrite:
     url: http://vminsert-shortterm.tenant-root.svc:8480/insert/0/prometheus
+
+fluent-bit:
+  readinessProbe:
+    httpGet:
+      path: /
+  daemonSetVolumes:
+    - name: varlog
+      hostPath:
+        path: /var/log
+    - name: varlibdockercontainers
+      hostPath:
+        path: /var/lib/docker/containers
+  daemonSetVolumeMounts:
+    - name: varlog
+      mountPath: /var/log
+    - name: varlibdockercontainers
+      mountPath: /var/lib/docker/containers
+      readOnly: true
+  config:
+    outputs: |
+      [OUTPUT]
+          Name http
+          Match kube.*
+          Host vlogs-generic.tenant-root.svc
+          port 9428
+          compress gzip
+          uri /insert/jsonline?_stream_fields=stream,kubernetes_pod_name,kubernetes_container_name,kubernetes_namespace_name&_msg_field=log&_time_field=date
+          format json_lines
+          json_date_format iso8601
+          header AccountID 0
+          header ProjectID 0
+    filters: |
+      [FILTER]
+          Name kubernetes
+          Match kube.*
+          Merge_Log On
+          Keep_Log On
+          K8S-Logging.Parser On
+          K8S-Logging.Exclude On
+      [FILTER]
+          Name                nest
+          Match               *
+          Wildcard            pod_name
+          Operation lift
+          Nested_under kubernetes
+          Add_prefix   kubernetes_
+      [FILTER]
+          Name modify
+          Match *
+          Add tenant tenant-root
+      [FILTER]
+          Name modify
+          Match *
+          Add cluster root-cluster