helm: upgrade templates to support networking/v1 and batch/v1 API

- sets minimal k8s version to 1.19 and maximum to <1.24.0-0;
- upgrades to traefik 10.3.4;
- updates templates to use batch/v1;
- updates templates to use networking/v1.

closes #482

CHANGES.rst

@@ -1,11 +1,18 @@
 Changes
 =======
 
+Version 0.9.0 (UNRELEASED)
+--------------------------
+
+- Administrators:
+    - Adds support for Kubernetes version 1.22 and 1.23 clusters.
+    - Removes support for Kubernetes version prior to 1.19.
+
 Version 0.8.2 (UNRELEASED)
 --------------------------
 
 - Administrators:
-    - Adds configuration environment variable, ``reana_server.environment.REANA_SCHEDULER_REQUEUE_COUNT``, to set requeue count for submitted workflows in case of scheduling error or busy cluster.
+    - Adds new configuration environment variable ``reana_server.environment.REANA_SCHEDULER_REQUEUE_COUNT`` to set workflow requeue count in case of scheduling errors or busy cluster situations.
 
 Version 0.8.1 (2022-02-15)
 --------------------------

helm/reana/Chart.yaml

@@ -28,11 +28,11 @@ keywords:
 type: application
 # Chart version.
 version: 0.8.1
-kubeVersion: ">= 1.13.0-0 < 1.22.0-0"
+kubeVersion: ">= 1.19.0-0 < 1.24.0-0"
 dependencies:
   - name: traefik
-    version: 1.85.x
-    repository: https://charts.helm.sh/stable
+    version: 10.3.4
+    repository: https://helm.traefik.io/traefik
     condition: traefik.enabled
     tags:
       - ingress

helm/reana/templates/cronjobs.yaml

@@ -1,6 +1,6 @@
 {{- if .Values.notifications.enabled }}
 {{- if .Values.notifications.system_status }}
-apiVersion: batch/v1beta1
+apiVersion: batch/v1
 kind: CronJob
 metadata:
   name: {{ include "reana.prefix" . }}-system-status
@@ -107,7 +107,7 @@ spec:
 {{- end }}
 ---
 {{- if and .Values.quota.enabled (tpl .Values.quota.periodic_update_policy .) }}
-apiVersion: batch/v1beta1
+apiVersion: batch/v1
 kind: CronJob
 metadata:
   name: {{ include "reana.prefix" . }}-resource-quota-update

helm/reana/templates/ingress.yaml

@@ -1,11 +1,4 @@
-{{- if .Values.ingress.enabled }}
-{{- if semverCompare ">=1.19-0" .Capabilities.KubeVersion.GitVersion }}
 apiVersion: networking.k8s.io/v1
-{{- else if semverCompare ">=1.14-0" .Capabilities.KubeVersion.GitVersion }}
-apiVersion: networking.k8s.io/v1beta1
-{{- else }}
-apiVersion: extensions/v1beta1
-{{- end }}
 kind: Ingress
 metadata:
   name: {{ include "reana.prefix" . }}-ingress
@@ -19,47 +12,28 @@ spec:
     - http:
         paths:
         - path: /api
-          {{- if semverCompare ">=1.19-0" .Capabilities.KubeVersion.GitVersion }}
           pathType: Prefix
           backend:
             service:
               name: {{ include "reana.prefix" . }}-server
               port:
                 number: 80
-          {{- else }}
-          backend:
-            serviceName: {{ include "reana.prefix" . }}-server
-            servicePort: 80
-          {{- end }}
         - path: /oauth
-          {{- if semverCompare ">=1.19-0" .Capabilities.KubeVersion.GitVersion }}
           pathType: Prefix
           backend:
             service:
               name: {{ include "reana.prefix" . }}-server
               port:
                 number: 80
-          {{- else }}
-          backend:
-            serviceName: {{ include "reana.prefix" . }}-server
-            servicePort: 80
-          {{- end }}
         {{- if .Values.components.reana_ui.enabled }}
         - path: /
-          {{- if semverCompare ">=1.19-0" .Capabilities.KubeVersion.GitVersion }}
           pathType: Prefix
           backend:
             service:
               name: {{ include "reana.prefix" . }}-ui
               port:
                 number: 80
-          {{- else }}
-          backend:
-            serviceName: {{ include "reana.prefix" . }}-ui
-            servicePort: 80
-          {{- end }}
         {{- end }}
       {{- if .Values.reana_hostname }}
       host: {{ .Values.reana_hostname }}
       {{- end }}
-{{- end }}

helm/reana/templates/roles.yaml

@@ -11,11 +11,11 @@ rules:
 - apiGroups: ["storage.k8s.io"]
   resources: ["storageclasses"]
   verbs: ["*"]
-- apiGroups: ["batch", "extensions"]
+- apiGroups: ["batch", "networking.k8s.io"]
   resources: ["jobs"]
   verbs: ["get", "list", "watch", "create", "update", "patch", "delete"]
 # Interactive web notebooks permissions
-- apiGroups: ["", "extensions", "apps", "networking.k8s.io"]
+- apiGroups: ["", "apps", "networking.k8s.io"]
   resources: ["deployments", "services", "ingresses"]
   verbs: ["get", "create", "delete"]
 # Metrics (`kubectl top node/pod`)

helm/reana/values.yaml

@@ -119,19 +119,19 @@ serviceAccount:
 
 # Traefik's chart values.yaml
 traefik:
+  ports:
+    web:
+      nodePort: 30080
+    websecure:
+      nodePort: 30443
+      tls:
+        # without additional configs will use default insecure one
+        enabled: true
   enabled: true
   rbac:
     enabled: true
-  dashboard:
-    enabled: true
-  serviceType: NodePort
   service:
-    nodePorts:
-      http: 30080
-      https: 30443
-  ssl:
-    enabled: true
-    generateTLS: true
+    type: NodePort
 
 # Quota
 quota:

reana/version.py

@@ -13,4 +13,4 @@
 
 from __future__ import absolute_import, print_function
 
-__version__ = "0.8.1"
+__version__ = "0.9.0a1"

setup.py

@@ -18,7 +18,7 @@
 history = open("CHANGES.rst").read()
 
 tests_require = [
-    "pytest-reana>=0.8.1,<0.9.0",
+    "pytest-reana>=0.9.0a2,<0.10.0",
 ]
 
 extras_require = {