FEAT!: move to GitOps

* deploy ArgoCD via server-side Helm
* deploy baseline via ArgoCD Application
  * define all baseline tools as Helm Application
* omit ansible playbook
* update README

README.md

@@ -1,10 +1,12 @@
 # Kubernetes Baseline
 
+Run `kubectl apply -f init.yml` to install:
+
+* [ArgoCD](https://argoproj.github.io/cd/)
   * [NGINX Ingress Controller](https://kubernetes.github.io/ingress-nginx/)
   * [cert-manager](https://cert-manager.io/)
   * [prometheus and grafana](https://github.com/prometheus-community/helm-charts/tree/main/charts/kube-prometheus-stack)
   * [loki](https://grafana.com/docs/loki/latest/)
-* [ArgoCD](https://argoproj.github.io/cd/)
   * [keel](https://keel.sh)
   * [reloader](https://github.com/stakater/Reloader)
 

baseline.yml

@@ -1,33 +0,0 @@
-# vim: filetype=yaml.ansible
----
-- hosts: localhost
-  gather_facts: no
-  connection: local
-  tasks:
-    - name: load charts list and definition
-      include_vars:
-        dir: vars/helm/
-        ignore_unknown_extensions: yes
-        name: helm_charts
-    - name: add chart repos
-      kubernetes.core.helm_repository:
-        name: "{{ item.value.chart.split('/')[0] }}"
-        repo_url: "{{ item.value.url }}"
-      loop: "{{ helm_charts | dict2items }}"
-    - name: update helm repos
-      command: helm repo update
-      changed_when: no
-    - name: install charts
-      kubernetes.core.helm:
-        name: "{{ item.key }}"
-        chart_ref: "{{ item.value.chart }}"
-        chart_version: "{{ item.value.version|default(omit) }}"
-        values: "{{ item.value.vals|default(omit) }}"
-        release_namespace: "{{ item.value.namespace | default(item.key) }}"
-        create_namespace: true
-      loop: "{{ helm_charts | dict2items }}"
-    - name: apply post-install manifests
-      k8s:
-       src: "{{ item }}"
-      with_fileglob:
-        - files/*.yml

baseline/cert-manager.yml

@@ -0,0 +1,24 @@
+---
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: cert-manager
+  namespace: argocd
+spec:
+  project: baseline
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: cert-manager
+  syncPolicy:
+    automated:
+      selfHeal: true
+      prune: true
+    syncOptions:
+      - CreateNamespace=true
+  source:
+    repoURL: https://charts.jetstack.io
+    chart: cert-manager
+    targetRevision: v1.7.2
+    helm:
+      values: |
+        installCRDs: true

baseline/ingress-nginx.yml

@@ -0,0 +1,34 @@
+---
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: ingress-nginx
+  namespace: argocd
+spec:
+  project: baseline
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: ingress-nginx
+  syncPolicy:
+    automated:
+      selfHeal: true
+      prune: true
+    syncOptions:
+      - CreateNamespace=true
+  source:
+    repoURL: https://kubernetes.github.io/ingress-nginx
+    chart: ingress-nginx
+    targetRevision: 4.0.18
+    helm:
+      values: |
+        controller:
+          image:
+            pullPolicy: Always
+          service:
+            externalTrafficPolicy: Local
+          metrics:
+            enabled: true
+            serviceMonitor:
+              enabled: true
+              additionalLabels:
+                release: monitoring  # same as prometheus-community chart name

baseline/keel.yml

@@ -0,0 +1,25 @@
+---
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: keel
+  namespace: argocd
+spec:
+  project: baseline
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: keel
+  syncPolicy:
+    automated:
+      selfHeal: true
+      prune: true
+    syncOptions:
+      - CreateNamespace=true
+  source:
+    repoURL: https://charts.keel.sh
+    chart: keel
+    targetRevision: 0.9.10
+    helm:
+      values: |
+        helmProvider:
+          enabled: false

baseline/loki.yml

@@ -0,0 +1,46 @@
+---
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: loki
+  namespace: argocd
+spec:
+  project: baseline
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: metrics
+  syncPolicy:
+    automated:
+      selfHeal: true
+      prune: true
+    syncOptions:
+      - CreateNamespace=true
+  source:
+    repoURL: https://grafana.github.io/helm-charts
+    chart: loki-stack
+    targetRevision: 2.6.1
+    helm:
+      values: |
+        promtail:
+          extraScrapeConfigs:
+            - job_name: journal
+              journal:
+                path: /var/log/journal
+                max_age: 12h
+                labels:
+                  job: systemd-journal
+              relabel_configs:
+                - source_labels:
+                    - '__journal__systemd_unit'
+                  target_label: 'unit'
+                - source_labels:
+                    - '__journal__hostname'
+                  target_label: 'hostname'
+          extraVolumes:
+            - name: journal
+              hostPath:
+                path: /var/log/journal
+          extraVolumeMounts:
+            - name: journal
+              mountPath: /var/log/journal
+              readOnly: true

baseline/monitoring.yml

@@ -0,0 +1,61 @@
+---
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: prometheus-grafana
+  namespace: argocd
+spec:
+  project: baseline
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: metrics
+  syncPolicy:
+    automated:
+      selfHeal: true
+      prune: true
+    syncOptions:
+      - CreateNamespace=true
+  source:
+    repoURL: https://prometheus-community.github.io/helm-charts
+    chart: kube-prometheus-stack
+    targetRevision: 34.6.0
+    helm:
+      values: |
+        kubeProxy:
+          enabled: false
+        kubeScheduler:
+          enabled: false
+        kubeControllerManager:
+          enabled: false
+        alertmanager:
+          config:
+            global:
+              resolve_timeout: 5m
+            route:
+              group_by: ['alertname', 'cluster']
+              group_wait: 30s
+              group_interval: 5m
+              repeat_interval: 12h
+              receiver: 'pushover'
+              routes:
+                - receiver: 'null'
+                  matchers:
+                    - alertname="Watchdog"
+                - receiver: 'null'
+                  matchers:
+                    - alertname="InfoInhibitor"
+            receivers:
+              - name: 'null'
+              - name: 'pushover'
+                pushover_configs:
+                  - user_key: x9PipXt1zGOU31OJH9Osv18BFrlRhw
+                    token: aqvce1uukerhxhayxdq85wgtdh2c5r
+        prometheus:
+          prometheusSpec:
+            storageSpec:
+              volumeClaimTemplate:
+                spec:
+                  accessModes: ["ReadWriteOnce"]
+                  resources:
+                    requests:
+                      storage: 10Gi

baseline/reloader.yml

@@ -0,0 +1,21 @@
+---
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: reloader
+  namespace: argocd
+spec:
+  project: baseline
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: reloader
+  syncPolicy:
+    automated:
+      selfHeal: true
+      prune: true
+    syncOptions:
+      - CreateNamespace=true
+  source:
+    repoURL: https://stakater.github.io/stakater-charts
+    chart: reloader
+    targetRevision: v0.0.110

init.yml

@@ -0,0 +1,52 @@
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: argocd
+---
+apiVersion: helm.cattle.io/v1
+kind: HelmChart
+metadata:
+  name: argocd
+  namespace: kube-system
+spec:
+  repo: https://argoproj.github.io/argo-helm
+  chart: argo-cd
+  targetNamespace: argocd
+  valuesContent: |-
+    applicationSet:
+      enabled: false
+    notifications:
+      enabled: false
+    dex:
+      enabled: false
+    server:
+      replicas: 0
+      additionalProjects:
+        - name: baseline
+          namespace: argocd
+          sourceRepos:
+            - '*'
+          destinations:
+            - namespace: '*'
+              server: '*'
+          clusterResourceWhitelist:
+            - group: '*'
+              kind: '*'
+      additionalApplications:
+        - name: baseline
+          namespace: argocd
+          project: baseline
+          source:
+            repoURL: 'https://git.smsvc.net/k8s/pb_baseline.git'
+            targetRevision: HEAD
+            path: baseline/
+            directory:
+              recurse: true
+          destination:
+            server: 'https://kubernetes.default.svc'
+            namespace: argocd
+          syncPolicy:
+            automated:
+              prune: true
+              selfHeal: true

vars/helm/000-monitoring.yml

@@ -1,46 +0,0 @@
----
-monitoring:
-  chart: prometheus-community/kube-prometheus-stack
-  url: https://prometheus-community.github.io/helm-charts
-  namespace: metrics
-  vals:
-    kubeProxy:
-      enabled: false
-    kubeScheduler:
-      enabled: false
-    kubeControllerManager:
-      enabled: false
-    alertmanager:
-      config:
-        global:
-          resolve_timeout: 5m
-        route:
-          group_by: ['alertname', 'cluster']
-          group_wait: 30s
-          group_interval: 5m
-          repeat_interval: 12h
-          receiver: 'pushover'
-          routes:
-            - receiver: 'null'
-              matchers:
-                - alertname="Watchdog"
-            - receiver: 'null'
-              matchers:
-                - alertname="InfoInhibitor"
-        receivers:
-          - name: 'null'
-          - name: 'pushover'
-            pushover_configs:
-              - user_key: x9PipXt1zGOU31OJH9Osv18BFrlRhw
-                token: aqvce1uukerhxhayxdq85wgtdh2c5r
-        templates:
-          - '/etc/alertmanager/config/*.tmpl'
-    prometheus:
-      prometheusSpec:
-        storageSpec:
-          volumeClaimTemplate:
-            spec:
-              accessModes: ["ReadWriteOnce"]
-              resources:
-                requests:
-                  storage: 10Gi

vars/helm/005-loki.yml

@@ -1,30 +0,0 @@
----
-loki:
-  chart: grafana/loki-stack
-  url: https://grafana.github.io/helm-charts
-  namespace: metrics
-  vals:
-    promtail:
-      extraScrapeConfigs:
-        - job_name: journal
-          journal:
-            path: /var/log/journal
-            max_age: 12h
-            labels:
-              job: systemd-journal
-          relabel_configs:
-            - source_labels:
-                - '__journal__systemd_unit'
-              target_label: 'unit'
-            - source_labels:
-                - '__journal__hostname'
-              target_label: 'hostname'
-      extraVolumes:
-        - name: journal
-          hostPath:
-            path: /var/log/journal
-
-      extraVolumeMounts:
-        - name: journal
-          mountPath: /var/log/journal
-          readOnly: true

vars/helm/010-cert-manager.yml

@@ -1,6 +0,0 @@
----
-cert-manager:
-  chart: jetstack/cert-manager
-  url: https://charts.jetstack.io
-  vals:
-    installCRDs: true

vars/helm/020-ingress-nginx.yml

@@ -1,16 +0,0 @@
----
-ingress-nginx:
-  chart: ingress-nginx/ingress-nginx
-  url: https://kubernetes.github.io/ingress-nginx
-  vals:
-    controller:
-      image:
-        pullPolicy: Always
-      service:
-        externalTrafficPolicy: Local
-      metrics:
-        enabled: true
-        serviceMonitor:
-          enabled: true
-          additionalLabels:
-            release: monitoring  # same as prometheus-community chart name

vars/helm/030-argocd.yml

@@ -1,13 +0,0 @@
----
-argocd:
-  chart: argocd/argo-cd
-  url: https://argoproj.github.io/argo-helm
-  vals:
-    server:
-      replicas: 0
-    applicationSet:
-      enabled: false
-    notifications:
-      enabled: false
-    dex:
-      enabled: false

vars/helm/040-keel.yml

@@ -1,7 +0,0 @@
----
-keel:
-  chart: keel/keel
-  url: https://charts.keel.sh
-  vals:
-    helmProvider:
-      enabled: false

vars/helm/050-reloader.yml

@@ -1,4 +0,0 @@
----
-reloader:
-  chart: stakater/reloader
-  url: https://stakater.github.io/stakater-charts