roles/kube_prometheus_stack/tasks/main.yml

# Copyright (c) 2022 VEXXHOST, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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- name: Retrieve "etcd" CA certificate
  ansible.builtin.slurp:
    src: /etc/kubernetes/pki/etcd/ca.crt
  register: _etcd_ca_crt

- name: Retrieve "etcd" client certificate
  ansible.builtin.slurp:
    src: /etc/kubernetes/pki/etcd/healthcheck-client.crt
  register: _etcd_healthcheck_client_crt

- name: Retrieve "etcd" client key
  ansible.builtin.slurp:
    src: /etc/kubernetes/pki/etcd/healthcheck-client.key
  register: _etcd_healthcheck_client_key

- name: Create namespace
  kubernetes.core.k8s:
    state: present
    definition:
      apiVersion: v1
      kind: Namespace
      metadata:
        name: monitoring

- name: Create Secret with "etcd" TLS certificates
  kubernetes.core.k8s:
    state: present
    definition:
      apiVersion: v1
      kind: Secret
      metadata:
        name: kube-prometheus-stack-etcd-client-cert
        namespace: monitoring
      data:
        ca.crt: "{{ _etcd_ca_crt.content }}"
        healthcheck-client.crt: "{{ _etcd_healthcheck_client_crt.content }}"
        healthcheck-client.key: "{{ _etcd_healthcheck_client_key.content }}"

- name: Deploy Helm chart
  kubernetes.core.k8s:
    state: present
    definition:
      - apiVersion: helm.toolkit.fluxcd.io/v2beta1
        kind: HelmRelease
        metadata:
          name: kube-prometheus-stack
          namespace: monitoring
        spec:
          interval: 60s
          chart:
            spec:
              chart: kube-prometheus-stack
              version: 36.2.0
              sourceRef:
                kind: HelmRepository
                name: prometheus-community
          install:
            crds: CreateReplace
          upgrade:
            crds: CreateReplace
          values: "{{ _kube_prometheus_stack_values | combine(kube_prometheus_stack_values, recursive=True) }}"