Delve into advanced Kubernetes features like monitoring, alerting, logging, and auto-scaling. Gain insights into creating resilient, self-adaptive clusters and applications with minimal manual intervention.

The world of DevOps has exploded with the help of technologies like Kubernetes and Docker.  
In this course, you will learn about more advanced Kubernetes features such as monitoring, alerting, logging, and scaling - crucial concepts for any DevOps professional. You will learn how to monitor clusters, how to send alerts when potential issues arise, and how to query the whole system’s metrics and logs. 
By the end of this course, you will have the required knowledge to make your clusters and applications truly dynamic and resilient, so that they require minimal manual involvement and are self-adaptive.

Advanced Kubernetes Techniques: Monitoring, Logging, Auto-Scaling

# Pulling the code

We'll continue using definitions from the [vfarcic/k8s-specs](https://github.com/vfarcic/k8s-specs) repository. To be on the safe side, we'll pull the latest version first.

> 🔍 All the commands from this chapter are available in the <a href="https://gist.github.com/37fd39d50fdee43a098575389fb7e435">02-ca.sh</a> Gist.

```shell
cd k8s-specs

git pull
```

Next, we need a cluster. Please use the Gists below as inspiration to create a new cluster or to validate that the one you already fulfills all the requirements.

# Gists and specifications

Choose the flavor you want and run the commands from its `.sh` file to create the cluster and the required specifications needed in this chapter.

> **NOTE:** In the end, you will see a command to `DELETE` the cluster too. Don't execute that command. Use the `DELETE` command only when you need to delete the cluster, preferably at the end of the chapter. 

This lesson will focus on creating a cluster again, the same way we created in the first chapter.

Before Getting Started

Autoscaling Deployments and StatefulSets

Auto-Scaling Nodes Of A Kubernetes Cluster

Collecting and Querying Metrics and Sending Alerts

Debugging Issues Discovered Through Metrics and Alerts

Extending HorizontalPodAutoscaler With Custom Metrics

Visualizing Metrics And Alerts

Collecting And Querying Logs

Conclusion

Create a Cluster

Pulling the code #