Merge changes from topic "kube-prometheus-stack"

* changes:
  [ANSIBLE] Increase Helm install timeout for kube-prometheus application
  [ANSIBLE] Create a NodePort type service for Grafana dashboard
  [DOC] Add documentation for kube-prometheus stack
  [BUILD] Add Kube Prometheus Stack docker image list to default image list
  [BUILD] Add 'busybox' image to kube-prometheus data list
  [ANSIBLE] Update custom Grafana dashboard
  [ANSIBLE] Configure custom Grafana dashboard
  [ANSIBLE] Setup persistent volume for Grafana dashboards
  [TOOLS] Fix helm-healer.sh usage description
  [ANSIBLE] Add 'nfs' playbook
  [ANSIBLE] Generate helm values file for kube-prometheus stack
  [ANSIBLE] Create host paths for PVs and set their permissions
  [BUILD] Add the 'python2-openshift' package
  [ANSIBLE] Play the 'k8s-persistent-volume' role in 'kube_prometheus' playbook
  [ANSIBLE] Add 'k8s-persistent-volume' role
  [MOLECULE] Add setup for new 'k8s-persistent-volume' role
  [ANSIBLE] Setup kube-prometheus-stack role
  [MOLECULE] Setup Molecule for kube-prometheus-stack role
  [MOLECULE] Add prepare-kube-prometheus-stack role
  [ANSIBLE] Set default kube-prometheus-stack version
  [ANSIBLE] Add kube_prometheus playbook
  [ANSIBLE] Add 'kube-prometheus-stack' role skeleton
  [BUILD] Symlink kube-prometheus-stack tgz file while creating offline package
  [BUILD] Add kube-prometheus-stack helm chart package http resource url
  [BUILD] Add datalist file for kube-prometheus-stack

7 files changed, 93 insertions, 0 deletions

diff --git a/ansible/roles/k8s-persistent-volume/.yamllint b/ansible/roles/k8s-persistent-volume/.yamllint
new file mode 100644
index 00000000..c5ae64be
--- /dev/null
+++ b/ansible/roles/k8s-persistent-volume/.yamllint
@@ -0,0 +1,12 @@
+---
+extends: default
+
+rules:
+  braces:
+    max-spaces-inside: 1
+    level: error
+  brackets:
+    max-spaces-inside: 1
+    level: error
+  line-length: disable
+  truthy: disable
diff --git a/ansible/roles/k8s-persistent-volume/defaults/main.yml b/ansible/roles/k8s-persistent-volume/defaults/main.yml
new file mode 100644
index 00000000..de387323
--- /dev/null
+++ b/ansible/roles/k8s-persistent-volume/defaults/main.yml
@@ -0,0 +1,10 @@
+---
+k8s_volumes:
+  - name: kube-prometheus-prometheus
+    capacity: "6Gi"
+    path_prefix: "{{ nfs_mount_path }}/kube-prometheus"
+    owner: 1000  # derived from prometheus.prometheusSpec.securityContext.runAsUser
+    group: 2000  # derived from prometheus.prometheusSpec.securityContext.fsGroup
+  - name: kube-prometheus-grafana
+    capacity: "4Gi"
+    path_prefix: "{{ nfs_mount_path }}/kube-prometheus"
diff --git a/ansible/roles/k8s-persistent-volume/molecule/default/converge.yml b/ansible/roles/k8s-persistent-volume/molecule/default/converge.yml
new file mode 100644
index 00000000..4e15b3c8
--- /dev/null
+++ b/ansible/roles/k8s-persistent-volume/molecule/default/converge.yml
@@ -0,0 +1,12 @@
+---
+- name: Converge
+  hosts: all
+  pre_tasks:
+    - name: Include kubernetes group variables
+      include_vars: ../../../../group_vars/kubernetes.yml
+    - name: Include test scenario variables
+      include_vars: vars.yml
+  tasks:
+    - name: "Include k8s-persistent-volume"
+      include_role:
+        name: "k8s-persistent-volume"
diff --git a/ansible/roles/k8s-persistent-volume/molecule/default/molecule.yml b/ansible/roles/k8s-persistent-volume/molecule/default/molecule.yml
new file mode 100644
index 00000000..dbbf0d81
--- /dev/null
+++ b/ansible/roles/k8s-persistent-volume/molecule/default/molecule.yml
@@ -0,0 +1,23 @@
+---
+dependency:
+  name: galaxy
+driver:
+  name: docker
+lint: |
+  set -e
+  yamllint .
+  ansible-lint .
+  flake8
+platforms:
+  - name: infrastructure-k8s-persistent-volume
+    image: molecule-${PREBUILD_PLATFORM_DISTRO:-centos}:${PREBUILD_DISTRO_VERSION:-centos7.6}
+    pre_build_image: true
+    groups:
+      - infrastructure
+provisioner:
+  name: ansible
+  env:
+    ANSIBLE_ROLES_PATH: ../../../../test/roles
+    ANSIBLE_LIBRARY: ../../../../library
+verifier:
+  name: testinfra
diff --git a/ansible/roles/k8s-persistent-volume/molecule/default/vars.yml b/ansible/roles/k8s-persistent-volume/molecule/default/vars.yml
new file mode 100644
index 00000000..ce473376
--- /dev/null
+++ b/ansible/roles/k8s-persistent-volume/molecule/default/vars.yml
@@ -0,0 +1,2 @@
+---
+k8s_volumes: []
diff --git a/ansible/roles/k8s-persistent-volume/tasks/main.yml b/ansible/roles/k8s-persistent-volume/tasks/main.yml
new file mode 100644
index 00000000..8428857f
--- /dev/null
+++ b/ansible/roles/k8s-persistent-volume/tasks/main.yml
@@ -0,0 +1,19 @@
+---
+- name: Install OpenShift Python client library  # community.kubernetes.k8s module dependency
+  package:
+    name: 'python2-openshift'
+    state: present
+
+- name: Create k8s persistent volumes
+  community.kubernetes.k8s:
+    wait: True
+    template: pv.yaml.j2
+  loop: "{{ k8s_volumes }}"
+
+- name: Create host paths for PVs and set their permissions
+  file:
+    path: "{{ item.path_prefix }}/{{ item.name }}"
+    state: directory
+    owner: "{{ item.owner | default(0) }}"
+    group: "{{ item.group | default(0) }}"
+  loop: "{{ k8s_volumes }}"
diff --git a/ansible/roles/k8s-persistent-volume/templates/pv.yaml.j2 b/ansible/roles/k8s-persistent-volume/templates/pv.yaml.j2
new file mode 100644
index 00000000..979ef2c6
--- /dev/null
+++ b/ansible/roles/k8s-persistent-volume/templates/pv.yaml.j2
@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: PersistentVolume
+metadata:
+  name: {{ item.name }}
+spec:
+  capacity:
+    storage: {{ item.capacity }}
+  volumeMode: Filesystem
+  accessModes:
+    - ReadWriteOnce
+  persistentVolumeReclaimPolicy: Retain
+  storageClassName: {{ item.name }}
+  hostPath:
+    path: {{ item.path_prefix }}/{{ item.name }}
+    type: ""