rolling updates, ingress controllers, statefulset, volumes, jobs, cro…

…njobs and namespaces

Signed-off-by: Erick Wendel <[email protected]>

module-10 - rolling updates/heroes-deploy.json

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+{
+  "apiVersion": "extensions/v1beta1",
+  "kind": "Deployment",
+  "metadata": {
+    "name": "api-heroes",
+    "labels": {
+      "version": "v1",
+      "app": "api-heroes"
+    }
+  },
+  "spec": {
+    "replicas": 2,
+    "strategy": {
+      "type": "RollingUpdate",
+      "rollingUpdate": {
+        "maxSurge": 1,
+        "maxUnavailable": 1
+      }
+    },
+    "minReadySeconds": 5,
+    "selector": {
+      "matchLabels": {
+        "version": "v1",
+        "app": "api-heroes"
+      }
+    },
+    "template": {
+      "metadata": {
+        "labels": {
+          "version": "v1",
+          "app": "api-heroes"
+        }
+      },
+      "spec": {
+        "containers": [
+          {
+            "name": "api-heroes",
+            "image": "k8scourse.azurecr.io/api-heroes:3",
+            "ports": [
+              {
+                "containerPort": 4000
+              }
+            ],
+            "env": [
+              {
+                "name": "MONGO_URL",
+                "value": "mongodb-svc"
+              },
+              {
+                "name": "PORT",
+                "value": "4000"
+              }
+            ],
+            "resources": {
+              "requests": {
+                "memory": "64Mi",
+              "cpu": "250m"
+              },
+              "limits": {
+                "memory": "100Mi",
+                "cpu": "500m"
+              }
+            }
+          }
+        ],
+        "imagePullSecrets": [
+          {
+            "name": "acr-credentials"
+          }
+        ]
+      }
+    }
+  }
+}

module-10 - rolling updates/nodejs-with-mongodb-api-example/.dockerignore

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+node_modules/
+lib/
+package-lock.json

module-10 - rolling updates/nodejs-with-mongodb-api-example/.gitignore

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+node_modules/
+lib/
+package-lock.json

module-10 - rolling updates/nodejs-with-mongodb-api-example/Dockerfile

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+FROM node:8-alpine
+
+ADD . /src
+
+WORKDIR /src 
+
+RUN npm i -g typescript
+
+RUN npm i 
+
+RUN npm run build
+
+CMD npm start

module-10 - rolling updates/nodejs-with-mongodb-api-example/README.md

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+## Node.js with MongoDB Example
+
+<img src=https://i.imgur.com/eDNZeqh.png alt='Swagger Page of that application' title='Swagger Page of that application'/>
+
+### Requirements
+
+* Node.js v7+
+* MongoDB running on local instance
+
+### Running
+
+* Install dependencies - `npm i`
+* Build typescript - `npm run build`
+* Run project - `npm start`
+* Go to swagger page - `localhost:3000/documentation`

module-10 - rolling updates/nodejs-with-mongodb-api-example/docker-compose.yml

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+version: '3'
+services: 
+  api-heroes:
+    # build: .
+    image: erickwendel/api-heroes
+    ports: 
+      - 3000:3000
+    environment: 
+      MONGO_URL: mongodb
+    links:
+      - mongodb
+
+  mongodb:
+    image: mongo:3.5
+    ports: 
+      - 27017:2017

module-10 - rolling updates/nodejs-with-mongodb-api-example/index.ts

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+import * as Hapi from "hapi";
+import * as Joi from "joi";
+import { MongoClient } from "mongodb";
+
+const Inert = require("inert");
+const Vision = require("vision");
+const HapiSwagger = require("hapi-swagger");
+const server = new Hapi.Server();
+const port = process.env.PORT || 3000;
+server.connection({ port });
+
+(async () => {
+  const connectionString = `mongodb://${process.env.MONGO_URL ||
+    "localhost"}/heroes`;
+  const connection = await MongoClient.connect(connectionString);
+  console.log("mongo db is running");
+  const db = connection.db("heroes").collection("hero");
+  await server.register([
+    Inert,
+    Vision,
+    {
+      register: HapiSwagger,
+      options: {
+        info: {
+          title: "V3 Node.js with MongoDB Example - Erick Wendel - Updated",
+          version: "3.0",
+        },
+      },
+    },
+  ]);
+
+  server.route([
+    {
+      method: "GET",
+      path: "/heroes",
+      config: {
+        handler: (req: any, reply: any) => {
+          return reply(db.find().toArray());
+        },
+        description: "List All heroes",
+        notes: "heroes from database",
+        tags: ["api"],
+      },
+    },
+    {
+      method: "POST",
+      path: "/heroes",
+      config: {
+        handler: (req, reply) => {
+          const { payload } = req;
+          return reply(db.insert(payload));
+        },
+        description: "Create a hero",
+        notes: "create a hero",
+        tags: ["api"],
+        validate: {
+          payload: {
+            name: Joi.string().required(),
+            power: Joi.string().required(),
+          },
+        },
+      },
+    },
+
+    {
+      method: "DELETE",
+      path: "/heroes/{id}",
+      config: {
+        handler: (req, reply) => {
+          return reply(db.remove({ _id: req.params.id }));
+        },
+        description: "Delete a hero",
+        notes: "Delete a hero",
+        tags: ["api"],
+        validate: {
+          params: {
+            id: Joi.string().required(),
+          },
+        },
+      },
+    },
+  ]);
+
+  await server.start();
+  console.log("server running at", port);
+})();

module-10 - rolling updates/nodejs-with-mongodb-api-example/package.json

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+{
+  "name": "docker-registry",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "preinstall": "npm i -g typescript",
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "start": "node lib/index.js",
+    "build": "tsc"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "@types/hapi": "^15.0.2",
+    "@types/joi": "^13.0.5",
+    "@types/mongodb": "^3.0.5",
+    "hapi": "^15.2.0",
+    "hapi-swagger": "^7.10.0",
+    "inert": "^4.2.1",
+    "joi": "^13.1.2",
+    "mongodb": "^3.0.3",
+    "vision": "^4.1.1"
+  }
+}

module-10 - rolling updates/nodejs-with-mongodb-api-example/tsconfig.json

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+{
+  "compilerOptions": {
+    /* Basic Options */
+    "target":
+      "es2017" /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', or 'ESNEXT'. */,
+    "module":
+      "commonjs" /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', or 'ESNext'. */,
+    "lib": [
+      "es2015"
+    ] /* Specify library files to be included in the compilation:  */,
+    // "allowJs": true,                       /* Allow javascript files to be compiled. */
+    // "checkJs": true,                       /* Report errors in .js files. */
+    // "jsx": "preserve",                     /* Specify JSX code generation: 'preserve', 'react-native', or 'react'. */
+    // "declaration": true,                   /* Generates corresponding '.d.ts' file. */
+    // "sourceMap": true,                     /* Generates corresponding '.map' file. */
+    // "outFile": "./",                       /* Concatenate and emit output to single file. */
+    "outDir": "lib" /* Redirect output structure to the directory. */,
+    // "rootDir": "./",                       /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
+    // "removeComments": true,                /* Do not emit comments to output. */
+    // "noEmit": true,                        /* Do not emit outputs. */
+    // "importHelpers": true,                 /* Import emit helpers from 'tslib'. */
+    // "downlevelIteration": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
+    // "isolatedModules": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
+
+    /* Strict Type-Checking Options */
+    "strict": false /* Enable all strict type-checking options. */
+    // "noImplicitAny": true,                 /* Raise error on expressions and declarations with an implied 'any' type. */
+    // "strictNullChecks": true,              /* Enable strict null checks. */
+    // "strictFunctionTypes": true,           /* Enable strict checking of function types. */
+    // "noImplicitThis": true,                /* Raise error on 'this' expressions with an implied 'any' type. */
+    // "alwaysStrict": true,                  /* Parse in strict mode and emit "use strict" for each source file. */
+
+    /* Additional Checks */
+    // "noUnusedLocals": true,                /* Report errors on unused locals. */
+    // "noUnusedParameters": true,            /* Report errors on unused parameters. */
+    // "noImplicitReturns": true,             /* Report error when not all code paths in function return a value. */
+    // "noFallthroughCasesInSwitch": true,    /* Report errors for fallthrough cases in switch statement. */
+
+    /* Module Resolution Options */
+    // "moduleResolution": "node",            /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
+    // "baseUrl": "./",                       /* Base directory to resolve non-absolute module names. */
+    // "paths": {},                           /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
+    // "rootDirs": [],                        /* List of root folders whose combined content represents the structure of the project at runtime. */
+    // "typeRoots": [],                       /* List of folders to include type definitions from. */
+    // "types": [],                           /* Type declaration files to be included in compilation. */
+    // "allowSyntheticDefaultImports": true,  /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
+    // "preserveSymlinks": true,              /* Do not resolve the real path of symlinks. */
+
+    /* Source Map Options */
+    // "sourceRoot": "./",                    /* Specify the location where debugger should locate TypeScript files instead of source locations. */
+    // "mapRoot": "./",                       /* Specify the location where debugger should locate map files instead of generated locations. */
+    // "inlineSourceMap": true,               /* Emit a single file with source maps instead of having a separate file. */
+    // "inlineSources": true,                 /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
+
+    /* Experimental Options */
+    // "experimentalDecorators": true,        /* Enables experimental support for ES7 decorators. */
+    // "emitDecoratorMetadata": true,         /* Enables experimental support for emitting type metadata for decorators. */
+  }
+}

module-10 - rolling updates/scripts.sh

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+
+kubectl create -f nginx.yaml
+kubectl get deployment
+
+# "spec": {
+#     "replicas": 3,
+#     "selector": {
+#       "matchLabels": {
+#         "version": "v1",
+#         "app": "api-heroes"
+#       }
+#     },
+kubectl apply -f heroes-deploy.json --record
+kubectl get deploy api-heroes
+kubectl rollout history deployment api-heroes
+kubectl rollout status deployment api-heroes
+kubectl rollout undo deployment api-heroes --to-revision=1 
+kubectl set image deployment api-heroes api-heroes=k8scourse.azurecr.io/api-heroes:3 --record
+
+kubectl replace -f heroes-deploy.json --record
+kubectl edit deployment api-heroes --record
+
+kubectl rollout pause deployment api-heroes
+kubectl rollout resume deployment api-heroes

module-11 - ingress controllers/1. nginx-default-backend.yaml

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+kind: Service
+apiVersion: v1
+metadata:
+  name: nginx-default-backend
+spec:
+  ports:
+  - port: 80
+    targetPort: http
+  selector:
+    app: nginx-default-backend
+---
+kind: Deployment
+apiVersion: extensions/v1beta1
+metadata:
+  name: nginx-default-backend
+spec:
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app: nginx-default-backend
+    spec:
+      terminationGracePeriodSeconds: 60
+      containers:
+      - name: default-http-backend
+        image: gcr.io/google_containers/defaultbackend:1.0
+        livenessProbe:
+          httpGet:
+            path: /healthz
+            port: 8080
+            scheme: HTTP
+          initialDelaySeconds: 30
+          timeoutSeconds: 5
+        ports:
+        - containerPort: 8080