Updates containers lecture (#2)

* Update 12-AppDeployment.md

* Update 12-AppDeployment.md

* Update 12-AppDeployment.md

* Update 12-AppDeployment.md

* Update 12-AppDeployment.md

* Update 13-AppPackaging.md

* Update 13-AppPackaging.md

* Update 13-AppPackaging.md

* Update 13-AppPackaging.md

* Update 13-AppPackaging.md

* Update 13-AppPackaging.md

* Update 13-AppPackaging.md

* Fix typo

md/12-AppDeployment.md

@@ -5,10 +5,99 @@ class: topicslide
 
 # Deployment of Applications
 
-## by Example
+### Deployment and DeploymentConfig objects
 
 ]
 
 ---
 
-# 
+.container[
+.col[
+# Deployment  
+* Deployment objects involve one or more **replica sets**, which contain a point-in-time record of the state of a deployment as a pod template.
+]
+.col[
+#  DeploymentConfig  
+* DeploymentConfig objects involve one or more **replication controllers**, which preceded replica sets.
+]]
+.center[
+**Use Deployment object unless you need a specific feature or behavior provided by DeploymentConfig objects.**
+]
+
+---
+
+# Replica sets
+.container[
+.col[
+- Is a native Kubernetes API object that ensures a specified number of pod replicas are running at any given time.
+- It supports **set-based** selector requirements.  
+  (**Set-based** label requirements allow filtering keys according to a set of values)
+]
+.col[.right[
+![:scale 80%, ReplicaSet](../img/replicaset_def.png)
+]]]
+
+---
+
+# Replication controllers
+.container[
+.col[
+Similar to a replica set: 
+- Ensures that a specified number of replicas of a pod are running at all times.  
+But  
+- If there are more running pods than desired, it deletes as many as necessary to match the defined amount.
+- It only supports equality-based selector requirements.  
+  (**Equality-based** label requirements allow filtering by label keys and values)  
+A selector is a set of labels assigned to the pods that are managed by the replication controller.
+]
+.col[.right[
+![:scale 80%, ReplicaControllers](../img/replicacontrollers_def.png)
+]]]
+
+---
+
+# Deployment
+.container[
+.col[
+- Kubernetes provides a first-class, native API object type in OpenShift Container Platform called Deployment.
+- Deployment objects:
+  - Describe the desired state of a component of an application.
+  - They create replica sets, which orchestrate pod lifecycles
+]
+.col[.right[
+![:scale 80%, Deployment](../img/deployment_def.png)    
+]]]
+
+---
+
+# DeploymentConfig
+.container[
+.col[
+Provides:
+- A DeploymentConfig object which creates a new Replication Controller and lets it start up pods.
+- Triggers that automated deployments (Wehbooks, Code change, Image change ...)
+- Versioning of application to allow rollbacks either manually of automatically.
+- Manual replication scaling and autoscaling
+]
+.col[.right[
+![:scale 80%, DeploymentConfig](../img/deploymentconfig_def.png) 
+]]]
+
+---
+
+# So, which one?
+.container[
+.col[
+- Both are supported in Openshift Container Platform
+- **DeploymentConfig**... 
+  - Prefer consistency
+  - Automatic rolling back to the last successfully deployed replica set in case of a failure.
+  - Support lifecycle hooks.
+  - Custom strategies.
+- **Deployment**... 
+  - Prefer availavility over consistency
+  - Implicit config change trigger in every change in the pod template or deployment. Can be paused.
+]
+.col[.right[
+![:scale 90%, CAP-Theorem](../img/CAP_Theorem_Venn_Diagram.png)
+]]]

md/13-AppPackaging.md

@@ -1,4 +1,87 @@
+layout: false
+class: topicslide
+
+.topic[
 
 # Packaging Containerized Applications
 
-- Content comming soon (e.g. Helm charts and Templates) 
+## Helm
+
+]
+
+---
+
+# What is Helm?
+Helm is like a package (called **charts**) manager for Kubernetes and helps you manage Kunernetes applications.  
+Helm charts help you define, install and upgrade Kubernetes application.
+
+.center[
+![Helm-logo](../img/helm.svg)]
+
+---
+
+# Helm architecture
+.container[
+.col[
+Three important concepts:
+- **chart**: A bundle of information necessary to create an instance of a Kubernetes application.
+- **config**: It contains configuration information that can be merged into a packaged chart.
+- **release**: A running instance of a chart combined with a specific config.  
+
+**Helm** is implemented into two distincts parts:
+- Helm Client
+- Helm Library
+]
+.col[.right[
+![:scale 80%, Helm](../img/helm_arch.png)]
+]]
+
+---
+
+# Helm packages search
+Two commands:
+- `helm search hub`
+- `helm search repo`  
+
+.container[
+.col[
+.center[
+### helm search hub  
+]
+This command search charts from repositories on Artifact Hub
+]
+.col[
+.center[
+### helm search repo
+]
+.right[
+This command search charts from your Helm configuration.  
+Type `helm` to find the location of your config file.
+]]]
+.center[![scale: 70%, Helm-search](../img/helm-search.png)]
+
+---
+
+# Helm packages manager
+As easy as package manager from Linux systems:
+- `helm repo add`: Add a repository
+- `helm repo list`: List your installed repository
+- `helm repo update`: Update the index and allows you to benefit from the latest versions of packages.
+
+---
+
+# Helm packages installation
+One command: `helm install`
+It may require the installation of a repository before:
+- `helm repo add ....`
+- `helm repo update`
+- `helm search repo ....`
+- `helm install [NAME] [CHART]`  
+After your installation, you can list your releases with the command `helm ls` (Use `-A` for all namespaces)
+
+---
+
+# What's next?
+Helm allows you to build your own charts, more explication in the exercice [Packaging Containerized Applications](../exercises-containers/12-AppPackaging.html)
+
+.center[![:scale 40%, Helm-exercices](../img/helmchart.jpg)]