add task4 for phase3

tasks/_posts/2021-03-01-phase3-task4-deploy-using-helm-kustomize.md

@@ -0,0 +1,77 @@
+---
+title: Task 04. Deploy on Kubernetes using helm and kustomize.
+published: true
+active: true
+tags: "Phase3"
+difficulty: 2
+---
+
+You were able to successfully run wordpress in Kubernetes. Now it's time to make wordpress setup configurable.
+
+<!--more-->
+
+## Task
+
+### 1. Repository
+
+- Fork [repository for task03](https://github.com/learningdevops-makvaz-com/phase03_task03) and clone forked repo.
+
+### 2. Understand Kubernetes basics.
+
+- **Learn about Kubernetes [Deployment](https://kubernetes.io/docs/concepts/workloads/controllers/deployment/)**: read documentation
+- **Run simple application in deployment from file**: Create deployment using yaml file `wordpress_manifest.yaml`, with name `simple-app` that would run `dockersamples/static-site` container, has label `app: simple-app` and has `2` replicas, exposed port 80. Apply your changes to kubernetes. And using `kubectl port-forward` command try to open you application in browser.
+- **Run simple application in deployment using command line**: Create deployment using command `kubectl run`, with name `simple-app2` that would run `dockersamples/static-site` container, has label `app: simple-app2` and has `2` replicas, exposed port 80. Apply your changes to kubernetes. And using `kubectl port-forward` command try to open you application in browser.
+
+- **Learn about Kubernetes [Service](https://kubernetes.io/docs/concepts/services-networking/service/)**: read documentation
+- **Expose simple-app pods as one endpoint**: After creating and properly configuring service make sure that application is available on this service.
+- **Clean up**: remove created previously deployments and service.
+
+### 2. Run local MySQL database with StatefulSet.
+
+- **Learn about Kubernetes [StatefulSet](https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/)**
+- **Create StatefulSet database**: Create statefulSet named `database`, with container `mysql`, with labels that you want. Add it to `database.yaml` file.
+- **Expose database using service**. Make sure that MySQL is accessible by port 3306. Add it to `database.yaml` file.
+
+### 3. Run local WordPress setup in couple pods using Deployment.
+
+- **Create Deployment with following parameters:**
+  - deployment name: `wordpress`
+  - replicas: `2`
+  - pods labels `app: wordpress`
+  - use `wordpress` pod manifest from previous task as a template for deployment
+  - save manifest to `wordpress.yaml` file
+
+- **Expose wordpress using service**. Make sure that Wordpress blog is accessible by port 80. Add it to `wordpress.yaml` file.
+
+### 4. Make your work visible.
+
+Create Pull Request with changes on files:
+
+- `wordpress_manifest.yaml`
+- `database.yaml`
+- `wordpress.yaml`
+
+### 5. Cleanup created resources
+
+### Additional tasks if you feel that it was too easy.
+
+- _N/A_
+
+### Tips:
+
+- _N/A_
+
+### Recommended soft:
+
+- _N/A_
+
+### Useful links:
+
+- [Kuberentes API](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.22/)
+- [Kuberentes Deployments](https://kubernetes.io/docs/concepts/workloads/controllers/deployment/)
+- [Kubernetes Service](https://kubernetes.io/docs/concepts/services-networking/service/)
+- [Kubernetes StatefulSet](https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/)
+
+### FAQ
+
+- _N/A_