Playbook to install kube-prometheus-stack

Author: sats-23

kubetest2-tf/data/k8s-ansible/install-k8s-monitoring.yml

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+---
+- name: Ensure kubernetes.core collection is installed
+  hosts: masters
+  gather_facts: no
+  tasks:
+    - name: Install required Ansible collection
+      ansible.builtin.command:
+        cmd: ansible-galaxy collection install kubernetes.core
+      changed_when: false
+      delegate_to: "{{ groups['masters'][0] }}"
+
+- name: Install Helm
+  hosts: masters
+  become: yes
+  tasks:
+    - name: Download Helm install script
+      ansible.builtin.get_url:
+        url: https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3
+        dest: /tmp/get_helm.sh
+        mode: '0700'
+      delegate_to: "{{ groups['masters'][0] }}"
+
+    - name: Run Helm install script
+      ansible.builtin.command: /tmp/get_helm.sh
+      args:
+        chdir: /tmp
+      delegate_to: "{{ groups['masters'][0] }}"
+
+- name: Deploy kube-prometheus-stack to Kubernetes
+  hosts: masters
+  become: yes
+  roles:
+    - install-monitoring

kubetest2-tf/data/k8s-ansible/roles/install-monitoring/defaults/main.yml

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+
+---
+helm_release_name: k8s-monitoring
+helm_chart_name: prometheus-community/kube-prometheus-stack
+helm_chart_version: "78.4.0"
+helm_namespace: monitoring
+helm_repo_name: prometheus-community
+helm_repo_url: https://prometheus-community.github.io/helm-charts
+helm_custom_values: "power-custom-values.yaml"

kubetest2-tf/data/k8s-ansible/roles/install-monitoring/files/power-custom-values.yaml

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+grafana:
+  image: 
+    registry: docker.io
+    repository: sats23/sats
+    tag: ppcgrafana
+    pullPolicy: IfNotPresent
+
+  service:
+    type: NodePort
+    portName: http-web
+    ipFamilies: []
+    ipFamilyPolicy: ""
+    port: 3000
+    targetPort: 3000
+
+  adminUser: admin
+  adminPassword: prom-operator
+
+  nodeSelector: 
+    kubernetes.io/role: infra
+
+prometheusOperator:
+  admissionWebhooks:
+    deployment:
+      nodeSelector: 
+        kubernetes.io/role: infra
+
+    patch:
+      enabled: true
+      image:
+        registry: docker.io
+        repository: sats23/sats
+        tag: kube-webhook-certgen-ppc64le
+    
+  nodeSelector: 
+    kubernetes.io/role: infra
+
+prometheus:
+  prometheusSpec:
+    retention: 14d
+    nodeSelector: 
+      kubernetes.io/role: infra
+
+crds:
+  upgradeJob:
+    nodeSelector: 
+      kubernetes.io/role: infra
+
+alertmanager:
+  alertmanagerSpec:
+    nodeSelector: 
+      kubernetes.io/role: infra
+
+kube-state-metrics:
+  nodeSelector: 
+    kubernetes.io/role: infra
+
+thanosRuler:
+  thanosRulerSpec:
+    nodeSelector: 
+      kubernetes.io/role: infra

kubetest2-tf/data/k8s-ansible/roles/install-monitoring/tasks/main.yml

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+---
+- name: Ensure namespace exists
+  ansible.builtin.command: kubectl create namespace {{ helm_namespace }}
+  ignore_errors: yes # Ignore error if namespace already exists
+
+- name: Ensure Helm repository is added
+  kubernetes.core.helm_repository:
+    name: "{{ helm_repo_name }}"
+    repo_url: "{{ helm_repo_url }}"
+    state: present
+  delegate_to: "{{ groups['masters'][0] }}"
+
+- name: Download the default values of helm chart
+  ansible.builtin.get_url:
+    url: "https://raw.githubusercontent.com/prometheus-community/helm-charts/kube-prometheus-stack-78.4.0/charts/kube-prometheus-stack/values.yaml"
+    dest: "/tmp/default-values.yaml"
+    mode: '0644'
+
+- name: Copy IBM Power specific helm chart values files
+  copy:
+    src: "{{ helm_custom_values }}"
+    dest: /tmp/
+
+- name: Install or upgrade kube-prometheus-stack chart
+  kubernetes.core.helm:
+    update_repo_cache: yes
+    name: "{{ helm_release_name }}"
+    chart_ref: "{{ helm_chart_name }}"
+    namespace: "{{ helm_namespace }}"
+    chart_version: "{{ helm_chart_version }}"
+    values_files: 
+      - "/tmp/power-custom-values.yaml"
+    timeout: 10m
+    set_values:
+      - value: grafana.adminUser="{{ grafana_admin_user }}"
+        value_type: string
+      - value: grafana.adminPassword="{{ grafana_admin_password }}"
+        value_type: string
+    state: present
+  delegate_to: "{{ groups['masters'][0] }}"
+