Switched from docker swarm to Kubernetes with rke

roles/longhorn/defaults/main.yaml

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+---
+longhorn_version: v0.8.1

roles/longhorn/tasks/main.yaml

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+---
+- name: Create Longhorn config Directory
+  file:
+    path: "{{ startup_infrastructure_directory }}/longhorn"
+    state: directory
+
+- name: Get Longhorn Install
+  get_url:
+    url: https://raw.githubusercontent.com/longhorn/longhorn/{{ longhorn_version }}/deploy/longhorn.yaml
+    dest: "{{ startup_infrastructure_directory }}/longhorn/longhorn.yaml"
+
+- name: Put other Longhorn yaml in place
+  template:
+    src: ../templates/{{ item }}.j2
+    dest: "{{ startup_infrastructure_directory }}/longhorn/{{ item }}"
+  with_items:
+    - longhorn-ingress.yaml
+
+- name: Install Longhorn
+  command: kubectl apply -f {{ startup_infrastructure_directory }}/longhorn/longhorn.yaml
+
+- name: Install Longhorn Extras
+  command: kubectl apply -f {{ startup_infrastructure_directory }}/longhorn/
+
+- name: Set default storageclass
+  command: >
+    kubectl patch storageclass longhorn -p '{"metadata": {"annotations":{"storageclass.kubernetes.io/is-default-class":"true"}}}'

roles/longhorn/templates/longhorn-ingress.yaml.j2

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+apiVersion: extensions/v1beta1
+kind: Ingress
+metadata:
+  name: longhorn-ingress
+  namespace: longhorn-system
+  annotations:
+  #  cert-manager.io/cluster-issuer: "letsencrypt-prod"
+    kubernetes.io/ingress.class: "nginx"
+  #  kubernetes.io/tls-acme: "true"
+spec:
+  rules:
+  - host: longhorn.{{ root_domain }}
+    http:
+      paths:
+      - path: /
+        backend:
+          serviceName: longhorn-frontend
+          servicePort: 80
+  #tls:
+  #  - hosts:
+  #    - longhorn.{{ root_domain }}
+  #    secretName: longhorn-ssl