Welcome to Stack Simplify

Author: Kalyan Reddy Daida

06-YAML-Basics/README.md

@@ -1,5 +1,55 @@
 # YAML Basics
 
+## Step-01: 
+### Key Value Pairs
+  - Space after colon is mandatory to differentiate key and value
+```yml
+Name: Kalyan
+City: New Jersey
+```
+### Array / Lists
+  - Dash indicates an element of an array
+```yml
+Employees:
+- Kalyan
+- John
+- David
+
+Departments:
+- HR
+- Training
+- Development
+- Infrastructure
+```  
+### Dictionary / Map
+  - Set of properties grouped together after an item
+  - Equal amount of blank space required for all the items under a dictionary
+```yml
+Employee:
+  name: Kalyan
+  city: Hyderabad
+  email: dkalyanreddy@gmail.com
+  department: HR
+```  
+
+### Spaces in YAML
+
+
+
+### Key Value / Dictionary / Lists
+
+
+### Dictionary with in another Dictionary
+
+
+### Dictionary vs List vs List of Dictionaries
+
+
+### Dictionary is Unordered, List is Ordered
+
+### Comments lines start with HASH
+
+
 # Kubernetes Editors - Visual Studio Code
 
 ## Step-01: Kubernetes

07-PODs-with-YAML/02-pod-base-template.yml

@@ -1,64 +1,42 @@
 # PODs with YAML
 
-## Step-01: Create Pod
-- We are going to create a very basic pod definition.
-#### Imperative Style
-```
-kubectl create -f pod-definition.yml
-kubectl get pods
-```
-#### Declarative Style
-```
-kubectl apply -f pod-definition.yml
-kubectl get pods
-```
-- **pod-definition.yml**
+## Step-01: Create Simple Pod Definition using YAML 
+- We are going to create a very basic pod definition
+- **02-pod-definition.yml**
 ```yml
 apiVersion: v1
 kind: Pod
 metadata:
   name: myapp-pod
   labels:
-    name: myapp
+    app: myapp
 spec:
   containers:
   - name: myapp
     image: stacksimplify/kubenginx:1.0.0
     ports:
       - containerPort: 80
 ```
-
-## Step-02: Change Image Version
-- Change image version from 1.0.0 to 2.0.0
-### Imperative Style
-```
-kubectl replace -f pod-definition.yml
-kubectl get pods
-```
-### Declarative Style
+- **Create Pod**
 ```
 kubectl apply -f pod-definition.yml
-```
-- Verify pods
-```
 kubectl get pods
-kubectl describe pod <pod-name>
-kubectl describe pod myapp-pod
 ```
-- **Observation:** Only container inside pod gets killed and restarts with new container image.
 
-- **pod-definition.yml**
+## Step-02: Create a NodePort Service
+- **03-pod-nodeport-service.yml**
 ```yml
 apiVersion: v1
-kind: Pod
+kind: Service
 metadata:
-  name: myapp-pod
-  labels:
-    name: myapp
+  name: myapp-pod-nodeport-service
 spec:
-  containers:
-  - name: myapp
-    image: stacksimplify/kubenginx:2.0.0
-    ports:
-      - containerPort: 80
+  type: NodePort
+  selector:
+    app: myapp
+  ports:
+  - port: 80
+    targetPort: 80
+    nodePort: 31231
 ```
+

07-PODs-with-YAML/README.md

@@ -0,0 +1,6 @@
+apiVersion:
+kind:
+metadata:
+  
+spec:
+    

07-PODs-with-YAML/01-kube-base-definition.yml renamed to 07-PODs-with-YAML/kube-manifests/01-kube-base-definition.yml

@@ -0,0 +1,5 @@
+apiVersion:
+kind:
+metadata:
+  
+spec:

07-PODs-with-YAML/kube-manifests/02-pod-definition.yml

@@ -0,0 +1,6 @@
+apiVersion:
+kind:
+metadata:
+  
+spec:
+    

07-PODs-with-YAML/kube-manifests/03-pod-nodeport-service.yml

@@ -7,6 +7,6 @@ metadata:
 spec:
   containers:
   - name: myapp
-    image: stacksimplify/kubenginx:2.0.0
+    image: stacksimplify/kubenginx:1.0.0
     ports:
       - containerPort: 80

07-PODs-with-YAML/kube-manifests/backup/01-kube-base-definition.yml

@@ -0,0 +1,64 @@
+# PODs with YAML
+
+## Step-01: Create Pod
+- We are going to create a very basic pod definition.
+#### Imperative Style
+```
+kubectl create -f pod-definition.yml
+kubectl get pods
+```
+#### Declarative Style
+```
+kubectl apply -f pod-definition.yml
+kubectl get pods
+```
+- **pod-definition.yml**
+```yml
+apiVersion: v1
+kind: Pod
+metadata:
+  name: myapp-pod
+  labels:
+    app: myapp
+spec:
+  containers:
+  - name: myapp
+    image: stacksimplify/kubenginx:1.0.0
+    ports:
+      - containerPort: 80
+```
+
+## Step-02: Change Image Version
+- Change image version from 1.0.0 to 2.0.0
+### Imperative Style
+```
+kubectl replace -f pod-definition.yml
+kubectl get pods
+```
+### Declarative Style
+```
+kubectl apply -f pod-definition.yml
+```
+- Verify pods
+```
+kubectl get pods
+kubectl describe pod <pod-name>
+kubectl describe pod myapp-pod
+```
+- **Observation:** Only container inside pod gets killed and restarts with new container image.
+
+- **pod-definition.yml**
+```yml
+apiVersion: v1
+kind: Pod
+metadata:
+  name: myapp-pod
+  labels:
+    name: myapp
+spec:
+  containers:
+  - name: myapp
+    image: stacksimplify/kubenginx:2.0.0
+    ports:
+      - containerPort: 80
+```