eindelijk weer eens een push

dev/yaml/README.md

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+INSTALLATIE:
+
+- kubectl create namespace monitoring
+
+Prometheus uses Kubernetes APIs to read all the available metrics from Nodes, Pods, Deployments,
+etc. 
+For this reason, we need to create an RBAC policy with read access to required API groups and 
+bind the policy to the monitoring namespace.
+In the role  you can see that we have added get, list, and watch permissions to 
+nodes, services endpoints, pods, and ingresses. 
+The role binding is bound to the monitoring namespace. If you have any use case to retrieve 
+metrics from any other object, you need to add that in this cluster role.
+
+- kubectl create -f clusterRole.yaml
+
+By externalizing Prometheus configs to a Kubernetes config map, you don’t have to build the 
+Prometheus image whenever you need to add or remove a configuration. 
+You need to update the config map and restart the Prometheus pods to apply the new configuration.
+
+Configuration files zijn: prometheus.yaml en prometheus.rules, samen verpakt in config-map.yaml.
+
+- kubectl create -f config-map.yaml
+
+Above statement creates two files inside the container later:
+
+kubectl exec -it prometheus-deployment-74dc6c7466-mv8bh /bin/sh -n monitoring
+/prometheus $ ls /etc/prometheus/
+prometheus.rules  prometheus.yml
+
+- kubectl create -f prometheus-deployment.yaml 
+- kubectl create -f prometheus-service.yaml 
+
+VOORBEELD:
+
+op home-page invullen:
+
+container_cpu_usage_seconds_total
+
+KUBE STATE METRICS Setup
+
+Kube state metrics is available as a public docker image. You will have to deploy the following Kubernetes objects for Kube state metrics to work.
+
+-A Service Account
+-Cluster Role – For kube state metrics to access all the Kubernetes API objects.
+-Cluster Role Binding – Binds the service account with the cluster role.
+-Kube State Metrics Deployment
+-Service – To expose the metrics
+
+All the above Kube state metrics objects will be deployed in the kube-system namespace
+
+- kubectl apply -f kube-state-metrics-configs/
+- kubectl get deployments kube-state-metrics -n kube-system
+
+## ☸️ kubernetes prometheus Setup
+
+Complete prometheus monitoring stack setup on Kubernetes.
+
+Idea of this repo to understand all the components involved in prometheus setup.
+
+You can find the full tutorial from here--> [Kubernetes Monitoting setup Using Prometheus](https://devopscube.com/setup-prometheus-monitoring-on-kubernetes/)
+
+## 🚀 PCA, CKA, CKAD, CKS or KCNA Voucher Codes/Updates
+
+If you are preparing for PCA, CKA, CKAD, CKS, or KCNA exam, **save 35%** today using code **DEVOPS35** at https://kube.promo/latest. It is a limited-time offer. Or Check out [Linux Foundation coupon]
+
+## ✍️ Other Manifest repos
+
+Kube State metrics manifests: https://github.com/devopscube/kube-state-metrics-configs
+
+Alert manager Manifests: https://github.com/bibinwilson/kubernetes-alert-manager
+
+Grafana manifests: https://github.com/bibinwilson/kubernetes-grafana
+
+Node Exporter manifests: https://github.com/bibinwilson/kubernetes-node-exporter
+
+

dev/yaml/clusterRole.yaml

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+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: prometheus
+rules:
+- apiGroups: [""]
+  resources:
+  - nodes
+  - nodes/proxy
+  - services
+  - endpoints
+  - pods
+  verbs: ["get", "list", "watch"]
+- apiGroups:
+  - extensions
+  resources:
+  - ingresses
+  verbs: ["get", "list", "watch"]
+- nonResourceURLs: ["/metrics"]
+  verbs: ["get"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: prometheus
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: prometheus
+subjects:
+- kind: ServiceAccount
+  name: default
+  namespace: monitoring

dev/yaml/ingressroute-dev-tls.yaml

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+apiVersion: traefik.containo.us/v1alpha1
+kind: IngressRoute
+metadata:
+  name: prometheus-dev-tls
+  namespace: observability
+spec:
+  entryPoints:
+    - websecure
+  routes:
+  - match: Host(`prometheus.allarddcs.nl`)
+    kind: Rule
+    services:
+    - name: kube-prom-stack-kube-prome-prometheus
+      port: 9090
+  tls:
+    certResolver: letsencrypt

dev/yaml/kube-state-metrics-configs/README.md

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+# kube-state-metrics-configs
+Kube state metrics kubernetes deployment configs

dev/yaml/kube-state-metrics-configs/cluster-role-binding.yaml

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+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  labels:
+    app.kubernetes.io/component: exporter
+    app.kubernetes.io/name: kube-state-metrics
+    app.kubernetes.io/version: 2.3.0
+  name: kube-state-metrics
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: kube-state-metrics
+subjects:
+- kind: ServiceAccount
+  name: kube-state-metrics
+  namespace: kube-system

dev/yaml/kube-state-metrics-configs/cluster-role.yaml

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+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  labels:
+    app.kubernetes.io/component: exporter
+    app.kubernetes.io/name: kube-state-metrics
+    app.kubernetes.io/version: 2.3.0
+  name: kube-state-metrics
+rules:
+- apiGroups:
+  - ""
+  resources:
+  - configmaps
+  - secrets
+  - nodes
+  - pods
+  - services
+  - resourcequotas
+  - replicationcontrollers
+  - limitranges
+  - persistentvolumeclaims
+  - persistentvolumes
+  - namespaces
+  - endpoints
+  verbs:
+  - list
+  - watch
+- apiGroups:
+  - apps
+  resources:
+  - statefulsets
+  - daemonsets
+  - deployments
+  - replicasets
+  verbs:
+  - list
+  - watch
+- apiGroups:
+  - batch
+  resources:
+  - cronjobs
+  - jobs
+  verbs:
+  - list
+  - watch
+- apiGroups:
+  - autoscaling
+  resources:
+  - horizontalpodautoscalers
+  verbs:
+  - list
+  - watch
+- apiGroups:
+  - authentication.k8s.io
+  resources:
+  - tokenreviews
+  verbs:
+  - create
+- apiGroups:
+  - authorization.k8s.io
+  resources:
+  - subjectaccessreviews
+  verbs:
+  - create
+- apiGroups:
+  - policy
+  resources:
+  - poddisruptionbudgets
+  verbs:
+  - list
+  - watch
+- apiGroups:
+  - certificates.k8s.io
+  resources:
+  - certificatesigningrequests
+  verbs:
+  - list
+  - watch
+- apiGroups:
+  - storage.k8s.io
+  resources:
+  - storageclasses
+  - volumeattachments
+  verbs:
+  - list
+  - watch
+- apiGroups:
+  - admissionregistration.k8s.io
+  resources:
+  - mutatingwebhookconfigurations
+  - validatingwebhookconfigurations
+  verbs:
+  - list
+  - watch
+- apiGroups:
+  - networking.k8s.io
+  resources:
+  - networkpolicies
+  - ingresses
+  verbs:
+  - list
+  - watch
+- apiGroups:
+  - coordination.k8s.io
+  resources:
+  - leases
+  verbs:
+  - list
+  - watch

dev/yaml/kube-state-metrics-configs/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    app.kubernetes.io/component: exporter
+    app.kubernetes.io/name: kube-state-metrics
+    app.kubernetes.io/version: 2.3.0
+  name: kube-state-metrics
+  namespace: kube-system
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: kube-state-metrics
+  template:
+    metadata:
+      labels:
+        app.kubernetes.io/component: exporter
+        app.kubernetes.io/name: kube-state-metrics
+        app.kubernetes.io/version: 2.3.0
+    spec:
+      automountServiceAccountToken: true
+      containers:
+      - image: k8s.gcr.io/kube-state-metrics/kube-state-metrics:v2.3.0
+        livenessProbe:
+          httpGet:
+            path: /healthz
+            port: 8080
+          initialDelaySeconds: 5
+          timeoutSeconds: 5
+        name: kube-state-metrics
+        ports:
+        - containerPort: 8080
+          name: http-metrics
+        - containerPort: 8081
+          name: telemetry
+        readinessProbe:
+          httpGet:
+            path: /
+            port: 8081
+          initialDelaySeconds: 5
+          timeoutSeconds: 5
+        securityContext:
+          allowPrivilegeEscalation: false
+          readOnlyRootFilesystem: true
+          runAsUser: 65534
+      nodeSelector:
+        kubernetes.io/os: linux
+      serviceAccountName: kube-state-metrics

dev/yaml/kube-state-metrics-configs/service-account.yaml

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+apiVersion: v1
+automountServiceAccountToken: false
+kind: ServiceAccount
+metadata:
+  labels:
+    app.kubernetes.io/component: exporter
+    app.kubernetes.io/name: kube-state-metrics
+    app.kubernetes.io/version: 2.3.0
+  name: kube-state-metrics
+  namespace: kube-system

dev/yaml/kube-state-metrics-configs/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    app.kubernetes.io/component: exporter
+    app.kubernetes.io/name: kube-state-metrics
+    app.kubernetes.io/version: 2.3.0
+  name: kube-state-metrics
+  namespace: kube-system
+spec:
+  clusterIP: None
+  ports:
+  - name: http-metrics
+    port: 8080
+    targetPort: http-metrics
+  - name: telemetry
+    port: 8081
+    targetPort: telemetry
+  selector:
+    app.kubernetes.io/name: kube-state-metrics

dev/yaml/prometheus-configmap.yaml

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: prometheus-server-conf
+  labels:
+    name: prometheus-server-conf
+  namespace: monitoring
+data:
+  prometheus.rules: |-
+    groups:
+    - name: devopscube demo alert
+      rules:
+      - alert: High Pod Memory
+        expr: sum(container_memory_usage_bytes) > 1
+        for: 1m
+        labels:
+          severity: slack
+        annotations:
+          summary: High Memory Usage
+  prometheus.yml: |-
+    global:
+      scrape_interval: 5s
+      evaluation_interval: 5s
+    rule_files:
+      - /etc/prometheus/prometheus.rules
+    alerting:
+      alertmanagers:
+      - scheme: http
+        static_configs:
+        - targets:
+          - "alertmanager.monitoring.svc:9093"
+    scrape_configs:
+      - job_name: 'node-exporter'
+        kubernetes_sd_configs:
+          - role: endpoints
+        relabel_configs:
+        - source_labels: [__meta_kubernetes_endpoints_name]
+          regex: 'node-exporter'
+          action: keep
+      - job_name: 'kubernetes-apiservers'
+        kubernetes_sd_configs:
+        - role: endpoints
+        scheme: https
+        tls_config:
+          ca_file: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
+        bearer_token_file: /var/run/secrets/kubernetes.io/serviceaccount/token
+        relabel_configs:
+        - source_labels: [__meta_kubernetes_namespace, __meta_kubernetes_service_name, __meta_kubernetes_endpoint_port_name]
+          action: keep
+          regex: default;kubernetes;https
+      - job_name: 'kubernetes-nodes'
+        scheme: https
+        tls_config:
+          ca_file: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
+        bearer_token_file: /var/run/secrets/kubernetes.io/serviceaccount/token
+        kubernetes_sd_configs:
+        - role: node
+        relabel_configs:
+        - action: labelmap
+          regex: __meta_kubernetes_node_label_(.+)
+        - target_label: __address__
+          replacement: kubernetes.default.svc:443
+        - source_labels: [__meta_kubernetes_node_name]
+          regex: (.+)
+          target_label: __metrics_path__
+          replacement: /api/v1/nodes/${1}/proxy/metrics
+      - job_name: 'kubernetes-pods'
+        kubernetes_sd_configs:
+        - role: pod
+        relabel_configs:
+        - source_labels: [__meta_kubernetes_pod_annotation_prometheus_io_scrape]
+          action: keep
+          regex: true
+        - source_labels: [__meta_kubernetes_pod_annotation_prometheus_io_path]
+          action: replace
+          target_label: __metrics_path__
+          regex: (.+)
+        - source_labels: [__address__, __meta_kubernetes_pod_annotation_prometheus_io_port]
+          action: replace
+          regex: ([^:]+)(?::\d+)?;(\d+)
+          replacement: $1:$2
+          target_label: __address__
+        - action: labelmap
+          regex: __meta_kubernetes_pod_label_(.+)
+        - source_labels: [__meta_kubernetes_namespace]
+          action: replace
+          target_label: kubernetes_namespace
+        - source_labels: [__meta_kubernetes_pod_name]
+          action: replace
+          target_label: kubernetes_pod_name
+      - job_name: 'kube-state-metrics'
+        static_configs:
+          - targets: ['kube-state-metrics.kube-system.svc.cluster.local:8080']
+      - job_name: 'kubernetes-cadvisor'
+        scheme: https
+        tls_config:
+          ca_file: /var/run/secrets/kubernetes.io/serviceaccount/ca.crt
+        bearer_token_file: /var/run/secrets/kubernetes.io/serviceaccount/token
+        kubernetes_sd_configs:
+        - role: node
+        relabel_configs:
+        - action: labelmap
+          regex: __meta_kubernetes_node_label_(.+)
+        - target_label: __address__
+          replacement: kubernetes.default.svc:443
+        - source_labels: [__meta_kubernetes_node_name]
+          regex: (.+)
+          target_label: __metrics_path__
+          replacement: /api/v1/nodes/${1}/proxy/metrics/cadvisor
+      - job_name: 'kubernetes-service-endpoints'
+        kubernetes_sd_configs:
+        - role: endpoints
+        relabel_configs:
+        - source_labels: [__meta_kubernetes_service_annotation_prometheus_io_scrape]
+          action: keep
+          regex: true
+        - source_labels: [__meta_kubernetes_service_annotation_prometheus_io_scheme]
+          action: replace
+          target_label: __scheme__
+          regex: (https?)
+        - source_labels: [__meta_kubernetes_service_annotation_prometheus_io_path]
+          action: replace
+          target_label: __metrics_path__
+          regex: (.+)
+        - source_labels: [__address__, __meta_kubernetes_service_annotation_prometheus_io_port]
+          action: replace
+          target_label: __address__
+          regex: ([^:]+)(?::\d+)?;(\d+)
+          replacement: $1:$2
+        - action: labelmap
+          regex: __meta_kubernetes_service_label_(.+)
+        - source_labels: [__meta_kubernetes_namespace]
+          action: replace
+          target_label: kubernetes_namespace
+        - source_labels: [__meta_kubernetes_service_name]
+          action: replace
+          target_label: kubernetes_name

dev/yaml/prometheus.yaml

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+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  name: prometheus-pv
+spec:
+  capacity:
+    storage: 2Gi
+  accessModes:
+  - ReadWriteOnce
+  nfs:
+    path: /mnt/nfs-share/dev/prometheus
+    server: 192,168,2,110
+    readOnly: false
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: prometheus-pvc
+  namespace: monitoring
+spec:
+  volumeName: prometheus-pv
+  accessModes:
+    - ReadWriteOnce
+  volumeMode: Filesystem
+  resources:
+    requests:
+      storage: 2Gi
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: prometheus-deployment
+  namespace: monitoring
+  labels:
+    app: prometheus-server
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: prometheus-server
+  template:
+    metadata:
+      labels:
+        app: prometheus-server
+    spec:
+      containers:
+        - name: prometheus
+          image: prom/prometheus
+          args:
+            - "--config.file=/etc/prometheus/prometheus.yml"
+            - "--storage.tsdb.path=/prometheus/"
+          ports:
+            - containerPort: 9090
+          volumeMounts:
+            - name: prometheus-config-volume
+              mountPath: /etc/prometheus/
+            - name: prometheus-storage-volume
+              mountPath: /prometheus/
+      volumes:
+        - name: prometheus-config-volume
+          configMap:
+            defaultMode: 420
+            name: prometheus-server-conf
+        - name: prometheus-storage-volume
+          persistentVolumeClaim:
+            claimName: prometheus-pvc
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: prometheus-service
+  namespace: monitoring
+  annotations:
+      prometheus.io/scrape: 'true'
+      prometheus.io/port:   '9090'
+spec:
+  selector:
+    app: prometheus-server
+  type: NodePort
+  ports:
+    - port: 9090
+      targetPort: 9090
+      nodePort: 30000
+---
+apiVersion: traefik.containo.us/v1alpha1
+kind: IngressRoute
+metadata:
+  name: prometheus-http-alldcs
+  namespace: monitoring
+spec:
+  entryPoints:
+    - web
+  routes:
+  - match: Host(`promtheus.alldcs.nl`)
+    kind: Rule
+    services:
+    - name: prometheus-service
+      port: 8080
+---
+apiVersion: traefik.containo.us/v1alpha1
+kind: IngressRoute
+metadata:
+  name: prometheus-dev-tls
+  namespace: monitoring
+spec:
+  entryPoints:
+    - websecure
+  routes:
+  - match: Host(`prometheus-dev.alldcs.nl`)
+    kind: Rule
+    services:
+    - name: prometheus-service
+      port: 8080
+  tls:
+    certResolver: letsencrypt