What are some examples of YAML configuration files?

What are some examples of YAML configuration files?

YAML is often used for configuration files. Here are a few examples:

1. Docker Compose:

   version: '3'
   services:
     web:
       image: nginx
       ports:
         - "80:80"
   

2. Kubernetes Deployment:

   apiVersion: apps/v1
   kind: Deployment
   metadata:
     name: myapp
   spec:
     replicas: 3
     template:
       metadata:
         labels:
           app: myapp
       spec:
         containers:
         - name: myapp
           image: myapp:latest
   

3. Ansible Playbook:

   - hosts: webservers
     tasks:
       - name: Install nginx
         apt:
           name: nginx
           state: present
   

Can you explain the Docker Compose example?

Sure! The Docker Compose example defines a service named 'web' that uses the Nginx image. It maps port 80 of the host to port 80 of the container, allowing you to access the web server via your browser.

What about the Kubernetes example?

The Kubernetes example describes a deployment named 'myapp' with 3 replicas. It specifies a pod template that runs a container from the 'myapp:latest' image, ensuring high availability.

And the Ansible Playbook?

The Ansible Playbook example targets 'webservers' and includes a task to install Nginx using the apt package manager, ensuring that Nginx is present on the specified hosts.