Kubernetes integration (pawelmalak#80)

* chore(): skaffold

* chore(): kubernetes integration

* chore(skaffold): refine shokohsc profile

* chore(): removed docker & kubernetes from database + stoppedApp pin option

* Revert "chore(): removed docker & kubernetes from database + stoppedApp pin option"

This reverts commit 5111c7a.

Author: Dimitri Pommier

.dockerignore

@@ -1,4 +1,6 @@
 node_modules
 github
 public
-build.sh
+build.sh
+k8s
+skaffold.yaml

CHANGELOG.md

@@ -56,4 +56,4 @@
 - Added 'warnings' to apps and bookmarks forms about supported url formats ([#5](https://github.com/pawelmalak/flame/issues/5))
 
 ### v1.0 (2021-06-08)
-Initial release of Flame - self-hosted startpage using Node.js on backend and React on frontend.
+Initial release of Flame - self-hosted startpage using Node.js on backend and React on frontend.

Dockerfile.dev

@@ -0,0 +1,16 @@
+FROM node:lts-alpine as build-front
+RUN apk add --no-cache curl
+WORKDIR /app
+COPY ./client .
+RUN npm install --production \
+    && npm run build
+
+FROM node:lts-alpine
+WORKDIR /app
+RUN mkdir -p ./public
+COPY --from=build-front /app/build/ ./public
+
+COPY package*.json ./
+RUN npm install
+COPY . .
+CMD ["npm", "run", "skaffold"]

README.md

@@ -22,6 +22,7 @@ Flame is self-hosted startpage for your server. Its design is inspired (heavily)
   - TypeScript
 - Deployment
   - Docker
+  - Kubernetes
 
 ## Development
 
@@ -80,6 +81,13 @@ services:
     restart: unless-stopped
 ```
 
+#### Skaffold
+
+```sh
+# use skaffold
+skaffold dev
+```
+
 ### Without Docker
 
 Follow instructions from wiki: [Installation without Docker](https://github.com/pawelmalak/flame/wiki/Installation-without-docker)
@@ -170,6 +178,21 @@ labels:
 
 And you must have activated the Docker sync option in the settings panel.
 
+### Kubernetes integration
+
+In order to use the Kubernetes integration, each ingress must have the following annotations:
+
+```yml
+metadata:
+  annotations:
+  - flame.pawelmalak/type=application # "app" works too
+  - flame.pawelmalak/name=My container
+  - flame.pawelmalak/url=https://example.com
+  - flame.pawelmalak/icon=icon-name # Optional, default is "kubernetes"
+```
+
+And you must have activated the Kubernetes sync option in the settings panel.
+
 ### Custom CSS
 
 > This is an experimental feature. Its behaviour might change in the future.

client/.env

@@ -1 +1 @@
-REACT_APP_VERSION=1.6.3
+REACT_APP_VERSION=1.6.3

client/src/components/Settings/OtherSettings/OtherSettings.tsx

@@ -52,6 +52,7 @@ const OtherSettings = (props: ComponentProps): JSX.Element => {
     bookmarksSameTab: 0,
     searchSameTab: 0,
     dockerApps: 1,
+    kubernetesApps: 1,
     unpinStoppedApps: 1
   });
 
@@ -71,6 +72,7 @@ const OtherSettings = (props: ComponentProps): JSX.Element => {
       bookmarksSameTab: searchConfig('bookmarksSameTab', 0),
       searchSameTab: searchConfig('searchSameTab', 0),
       dockerApps: searchConfig('dockerApps', 0),
+      kubernetesApps: searchConfig('kubernetesApps', 0),
       unpinStoppedApps: searchConfig('unpinStoppedApps', 0)
     });
   }, [props.loading]);
@@ -297,6 +299,21 @@ const OtherSettings = (props: ComponentProps): JSX.Element => {
           <option value={0}>False</option>
         </select>
       </InputGroup>
+
+      {/* KUBERNETES SETTINGS */}
+      <h2 className={classes.SettingsSection}>Kubernetes</h2>
+      <InputGroup>
+        <label htmlFor='kubernetesApps'>Use Kubernetes Ingress API</label>
+        <select
+          id='kubernetesApps'
+          name='kubernetesApps'
+          value={formData.kubernetesApps}
+          onChange={e => inputChangeHandler(e, true)}
+        >
+          <option value={1}>True</option>
+          <option value={0}>False</option>
+        </select>
+      </InputGroup>
       <Button>Save changes</Button>
     </form>
   );

client/src/interfaces/Forms.ts

@@ -19,5 +19,6 @@ export interface SettingsForm {
   bookmarksSameTab: number;
   searchSameTab: number;
   dockerApps: number;
+  kubernetesApps: number;
   unpinStoppedApps: number;
 }

controllers/apps.js

@@ -6,6 +6,7 @@ const { Sequelize } = require('sequelize');
 const axios = require('axios');
 const Logger = require('../utils/Logger');
 const logger = new Logger();
+const k8s = require('@kubernetes/client-node');
 
 // @desc      Create new app
 // @route     POST /api/apps
@@ -51,6 +52,9 @@ exports.getApps = asyncWrapper(async (req, res, next) => {
   const useDockerApi = await Config.findOne({
     where: { key: 'dockerApps' }
   });
+  const useKubernetesApi = await Config.findOne({
+    where: { key: 'kubernetesApps' }
+  });
   const unpinStoppedApps = await Config.findOne({
     where: { key: 'unpinStoppedApps' }
   });
@@ -116,6 +120,64 @@ exports.getApps = asyncWrapper(async (req, res, next) => {
     }
   }
 
+  if (useKubernetesApi && useKubernetesApi.value == 1) {
+    let ingresses = null;
+
+    try {
+      const kc = new k8s.KubeConfig();
+      kc.loadFromCluster();
+      const k8sNetworkingV1Api = kc.makeApiClient(k8s.NetworkingV1Api);
+      await k8sNetworkingV1Api.listIngressForAllNamespaces()
+      .then((res) => {
+          ingresses = res.body.items;
+      });
+    } catch {
+      logger.log("Can't connect to the kubernetes api", 'ERROR');
+    }
+
+    if (ingresses) {
+      apps = await App.findAll({
+        order: [[orderType, 'ASC']]
+      });
+
+      ingresses = ingresses.filter(e => Object.keys(e.metadata.annotations).length !== 0);
+      const kubernetesApps = [];
+      for (const ingress of ingresses) {
+        const annotations = ingress.metadata.annotations;
+
+        if (
+          'flame.pawelmalak/name' in annotations &&
+          'flame.pawelmalak/url' in annotations &&
+          /^app/.test(annotations['flame.pawelmalak/type'])
+        ) {
+          kubernetesApps.push({
+            name: annotations['flame.pawelmalak/name'],
+            url: annotations['flame.pawelmalak/url'],
+            icon: annotations['flame.pawelmalak/icon'] || 'kubernetes'
+          });
+        }
+      }
+
+      if (unpinStoppedApps && unpinStoppedApps.value == 1) {
+        for (const app of apps) {
+          await app.update({ isPinned: false });
+        }
+      }
+
+      for (const item of kubernetesApps) {
+        if (apps.some(app => app.name === item.name)) {
+          const app = apps.filter(e => e.name === item.name)[0];
+          await app.update({ ...item, isPinned: true });
+        } else {
+          await App.create({
+            ...item,
+            isPinned: true
+          });
+        }
+      }
+    }
+  }
+
   if (orderType == 'name') {
     apps = await App.findAll({
       order: [[Sequelize.fn('lower', Sequelize.col('name')), 'ASC']]

k8s/base/deployment.yaml

@@ -0,0 +1,28 @@
+---
+kind: Deployment
+apiVersion: apps/v1
+metadata:
+  name: flame
+spec:
+  selector:
+    matchLabels:
+      app: flame
+  template:
+    metadata:
+      labels:
+        app: flame
+    spec:
+      serviceAccountName: flame
+      securityContext:
+        fsGroup: 1000
+      containers:
+        - name: flame
+          image: shokohsc/flame
+          ports:
+            - name: http
+              containerPort: 5005
+              protocol: TCP
+          readinessProbe:
+            httpGet:
+              path: /
+              port: http

k8s/base/ingress.yaml

@@ -0,0 +1,17 @@
+---
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: flame
+spec:
+  rules:
+  - host: flame.cluster.local
+    http:
+      paths:
+      - path: /
+        pathType: Prefix
+        backend:
+          service:
+            name: flame
+            port:
+              number: 80

k8s/base/kustomization.yaml

@@ -0,0 +1,9 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+namespace: flame
+resources:
+  - namespace.yaml
+  - deployment.yaml
+  - service.yaml
+  - ingress.yaml
+  - rbac.yaml

k8s/base/namespace.yaml

@@ -0,0 +1,8 @@
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: flame
+  labels:
+    namespace: flame
+    goldilocks.fairwinds.com/enabled: "true"

k8s/base/rbac.yaml

@@ -0,0 +1,26 @@
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: flame
+---
+kind: ClusterRole
+apiVersion: rbac.authorization.k8s.io/v1
+metadata:
+  name: flame
+rules:
+- apiGroups: ["networking.k8s.io"]
+  resources: ["ingresses"]
+  verbs: ["get", "list", "watch"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: flame
+subjects:
+- kind: ServiceAccount
+  name: flame
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: flame

k8s/base/service.yaml

@@ -0,0 +1,16 @@
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: flame
+  labels:
+    app: flame
+spec:
+  type: ClusterIP
+  ports:
+    - port: 80
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    app: flame

k8s/overlays/shokohsc/deployment.yaml

@@ -0,0 +1,36 @@
+---
+kind: Deployment
+apiVersion: apps/v1
+metadata:
+  name: flame
+spec:
+  selector:
+    matchLabels:
+      app: flame
+  template:
+    metadata:
+      labels:
+        app: flame
+    spec:
+      serviceAccountName: flame-dev
+      securityContext:
+        fsGroup: 1000
+      containers:
+        - name: flame
+          image: shokohsc/flame
+          command:
+            - npm
+          args:
+            - run
+            - skaffold
+          env:
+            - name: NODE_ENV
+              value: development
+          ports:
+            - name: http
+              containerPort: 5005
+              protocol: TCP
+          readinessProbe:
+            httpGet:
+              path: /
+              port: http

k8s/overlays/shokohsc/ingress.yaml

@@ -0,0 +1,28 @@
+---
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: flame
+  annotations:
+    kubernetes.io/ingress.class: nginx
+    cert-manager.io/cluster-issuer: ca-cluster-issuer
+    flame.pawelmalak/name: flame
+    flame.pawelmalak/url: dev.flame.shokohsc.home
+    flame.pawelmalak/type: app
+    flame.pawelmalak/icon: fire
+spec:
+  rules:
+  - host: dev.flame.shokohsc.home
+    http:
+      paths:
+      - path: /
+        pathType: Prefix
+        backend:
+          service:
+            name: flame
+            port:
+              number: 80
+  tls:
+  - hosts:
+    - dev.flame.shokohsc.home
+    secretName: flame-cert

k8s/overlays/shokohsc/kustomization.yaml

@@ -0,0 +1,9 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+namespace: flame-dev
+resources:
+  - namespace.yaml
+  - deployment.yaml
+  - service.yaml
+  - ingress.yaml
+  - rbac.yaml