appset: add templatePatch for chart-based apps; onboard alloy (helm chart source)

apps/alloy/alloy.yaml

@@ -0,0 +1,122 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+chart: true
+metadata:
+  name: alloy
+  namespace: argocd
+  finalizers: [resources-finalizer.argocd.argoproj.io]
+spec:
+  project: default
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: alloy
+  syncPolicy:
+    automated: { prune: true, selfHeal: true }
+    syncOptions: [CreateNamespace=true, ServerSideApply=true]
+  source:
+    repoURL: https://grafana.github.io/helm-charts
+    chart: alloy
+    targetRevision: 1.19.2
+    helm:
+      valuesObject:
+        clustering: { enabled: false }
+        mounts:
+          varlog: true
+        controller:
+          type: daemonset
+        resources:
+          requests:
+            cpu: 100m
+            memory: 128Mi
+          limits:
+            cpu: 200m
+            memory: 256Mi
+        configMap:
+          create: true
+          content: |-
+            discovery.kubernetes "all_pods" {
+              role = "pod"
+
+              selectors {
+                role  = "pod"
+                field = "spec.nodeName=" + coalesce(env("HOSTNAME"), constants.hostname)
+              }
+            }
+
+            discovery.relabel "all_pods" {
+              targets = discovery.kubernetes.all_pods.targets
+
+              rule {
+                source_labels = ["__meta_kubernetes_namespace"]
+                target_label  = "namespace"
+              }
+              rule {
+                source_labels = ["__meta_kubernetes_pod_name"]
+                target_label  = "pod"
+              }
+              rule {
+                source_labels = ["__meta_kubernetes_pod_container_name"]
+                target_label  = "container"
+              }
+              rule {
+                source_labels = ["__meta_kubernetes_pod_label_app_kubernetes_io_name"]
+                target_label  = "app"
+              }
+            }
+
+            loki.source.kubernetes "all_logs" {
+              targets    = discovery.relabel.all_pods.output
+              forward_to = [loki.write.main.receiver]
+            }
+
+            discovery.kubernetes "shared_pods" {
+              role = "pod"
+              selectors {
+                role  = "pod"
+                field = "metadata.namespace=chacal"
+              }
+            }
+
+            discovery.relabel "shared_pods" {
+              targets = discovery.kubernetes.shared_pods.targets
+
+              rule {
+                source_labels = ["__meta_kubernetes_namespace"]
+                target_label  = "namespace"
+              }
+              rule {
+                source_labels = ["__meta_kubernetes_pod_name"]
+                target_label  = "pod"
+              }
+              rule {
+                source_labels = ["__meta_kubernetes_pod_container_name"]
+                target_label  = "container"
+              }
+              rule {
+                source_labels = ["__meta_kubernetes_pod_label_app_kubernetes_io_name"]
+                target_label  = "app"
+              }
+            }
+
+            loki.source.kubernetes "shared_logs" {
+              targets    = discovery.relabel.shared_pods.output
+              forward_to = [loki.write.shared.receiver]
+            }
+
+            loki.write "main" {
+              endpoint {
+                url = "http://loki.monitoring.svc.cluster.local:3100/loki/api/v1/push"
+                headers = {
+                  "X-Scope-OrgID" = "main",
+                }
+              }
+            }
+
+            loki.write "shared" {
+              endpoint {
+                url = "http://loki.monitoring.svc.cluster.local:3100/loki/api/v1/push"
+                headers = {
+                  "X-Scope-OrgID" = "chacal",
+                }
+              }
+            }

apps/root/applicationset.yaml

@@ -35,3 +35,12 @@ spec:
         automated:
           prune: true
           selfHeal: true
+  templatePatch: |
+    {{- if hasKey . "chart" }}
+    spec:
+      source:
+        $patch: replace
+        {{- toYaml .spec.source | nindent 4 }}
+      syncPolicy:
+        syncOptions: [CreateNamespace=true, ServerSideApply=true]
+    {{- end }}