Merge pull request #33 from SCAR-iT-COLO/23-sanitize-chapter-10

Cleaned up code blocks

10 - Containers and Vitrualization/Container Orchestration (Kubernetes, Docker Swarm).md

@@ -113,34 +113,22 @@ Basic steps:
 1. Install kubectl (Kubernetes command-line tool)
 2. Set up a Kubernetes cluster (e.g., using Minikube for local development)
 3. Deploy an application:
-   ```
+   `kubectl create deployment my-app --image=my-app-image`
-   kubectl create deployment my-app --image=my-app-image
-   ```
 4. Expose the deployment:
-   ```
+   `kubectl expose deployment my-app --type=LoadBalancer --port=8080`
-   kubectl expose deployment my-app --type=LoadBalancer --port=8080
-   ```
 5. Scale the deployment:
-   ```
+   `kubectl scale deployment my-app --replicas=3`
-   kubectl scale deployment my-app --replicas=3
-   ```
 
 ## 6. Setting Up and Using Docker Swarm
 
 Basic steps:
 1. Initialize a swarm:
-   ```
+   `docker swarm init`
-   docker swarm init
-   ```
 2. Join worker nodes to the swarm
 3. Deploy a service:
-   ```
+   `docker service create --name my-service my-image`
-   docker service create --name my-service my-image
-   ```
 4. Scale the service:
-   ```
+   `docker service scale my-service=3`
-   docker service scale my-service=3
-   ```
 
 ## 7. Best Practices for Container Orchestration
 

10 - Containers and Vitrualization/Kernel Virtualization (KVM).md

@@ -30,9 +30,7 @@ c) QEMU for hardware emulation.
 
 On most Linux distributions, you can install KVM using the package manager:
 
-```bash
+`sudo apt install qemu-kvm libvirt-daemon-system libvirt-clients bridge-utils`
-sudo apt install qemu-kvm libvirt-daemon-system libvirt-clients bridge-utils
-```
 
 ## 6. Creating and Managing VMs
 

10 - Containers and Vitrualization/Linux Containers LXC.md

@@ -13,17 +13,12 @@ LXC uses Linux kernel features such as cgroups, namespaces, and chroot to create
 ## 3. Installation
 To install LXC on most Linux distributions:
 
-```
+`sudo apt-get update && sudo apt-get install lxc lxc-templates`
-sudo apt-get update
-sudo apt-get install lxc lxc-templates
-```
 
 ## 4. Creating containers
 To create a new container:
 
-```
+`sudo lxc-create -n mycontainer -t download -- -d ubuntu -r focal -a amd64`
-sudo lxc-create -n mycontainer -t download -- -d ubuntu -r focal -a amd64
-```
 
 This creates a container named "mycontainer" using the Ubuntu Focal (20.04) template for amd64 architecture.
 
@@ -62,9 +57,9 @@ LXC supports multiple storage backends:
    - Use AppArmor or SELinux profiles
 
 ## 10. Advanced features
-    - Snapshots: Create point-in-time copies of containers
+   - Snapshots: Create point-in-time copies of containers
-    - Live migration: Move running containers between hosts
+   - Live migration: Move running containers between hosts
-    - Nesting: Run LXC containers inside other LXC containers
+   - Nesting: Run LXC containers inside other LXC containers
 
 ## 11. LXC vs. Docker
 While both use Linux containerization, they have different focuses:

10 - Containers and Vitrualization/Working With Dockerfiles and Images.md

@@ -37,40 +37,28 @@ CMD ["python", "app.py"]
 
 To build an image from a Dockerfile:
 
-```
+`docker build -t myapp:v1 .`
-docker build -t myapp:v1 .
-```
 
 This command builds an image named "myapp" with the tag "v1" using the Dockerfile in the current directory.
 
 ## 4. Managing Docker Images
 
 List images:
-```
+`docker images`
-docker images
-```
 
 Remove an image:
-```
+`docker rmi myapp:v1`
-docker rmi myapp:v1
-```
 
 Tag an image:
-```
+`docker tag myapp:v1 myapp:latest`
-docker tag myapp:v1 myapp:latest
-```
 
 ## 5. Pushing and Pulling Images
 
 Push an image to a registry:
-```
+`docker push username/myapp:v1`
-docker push username/myapp:v1
-```
 
 Pull an image from a registry:
-```
+`docker pull username/myapp:v1`
-docker pull username/myapp:v1
-```
 
 ## 6. Multi-stage Builds
 
@@ -101,14 +89,10 @@ CMD ["myapp"]
 ## 8. Docker Image Inspection
 
 Inspect image details:
-```
+`docker inspect myapp:v1`
-docker inspect myapp:v1
-```
 
 View image history:
-```
+`docker history myapp:v1`
-docker history myapp:v1
-```
 
 ## 9. Optimizing Docker Images
 
@@ -125,17 +109,13 @@ docker history myapp:v1
 - Azure Container Registry (ACR)
 
 To use a private registry, log in first:
-```
+`docker login myregistry.azurecr.io`
-docker login myregistry.azurecr.io
-```
 
 ##  11. Image Scanning and Security
 
 Use tools like Docker Scan, Clair, or Trivy to scan images for vulnerabilities:
 
-```
+`docker scan myapp:v1`
-docker scan myapp:v1
-```
 
 ## 12. Docker Image Versioning
 
@@ -150,9 +130,6 @@ Always tag your images with a specific version and avoid using only the "latest"
 
 Use tools like Hadolint to check your Dockerfile for best practices and potential issues:
 
-```
+`hadolint Dockerfile`
-hadolint Dockerfile
-```
-
-This guide covers the essentials of working with Dockerfiles and images. As you become more comfortable with these concepts, you can explore advanced topics like Docker Compose for multi-container applications and Docker Swarm or Kubernetes for container orchestration.
 
+This guide covers the essentials of working with Dockerfiles and images. As you become more comfortable with these concepts, you can explore advanced topics like Docker Compose for multi-container applications and Docker Swarm or Kubernetes for container orchestration.