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Practice Test - Monitor Cluster Components

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Solutions to practice test - monitor cluster components

1. We have deployed a few PODs running workloads. Inspect it.

   ``` kubectl get pods ```
2. Let us deploy metrics-server to monitor the PODs and Nodes. Pull the git repository for the deployment files.

   ``` git clone https://github.com/kodekloudhub/kubernetes-metrics-server.git ```
3. Deploy the metrics-server by creating all the components downloaded.

   Run the 'kubectl create -f .' command from within the downloaded repository. ``` cd kubernetes-metrics-server kubectl create -f . ```
4. It takes a few minutes for the metrics server to start gathering data.

   Run the `kubectl top node` command and wait for a valid output. ``` kubectl top node ```
5. Identify the node that consumes the most CPU(cores).

   Run the `kubectl top node` command ``` kubectl top node ``` Examine the `CPU(cores)` column of the output to get the answer.
6. Identify the node that consumes the most Memory(bytes).

   Run the `kubectl top node` command ``` $ kubectl top node ``` Examine the `MEMORY(bytes)` column of the output to get the answer.
7. Identify the POD that consumes the most Memory(bytes).

   Run the `kubectl top pod` command ``` kubectl top pod ``` Examine the `MEMORY(bytes)` column of the output to get the answer.
8. Identify the POD that consumes the least CPU(cores).

   Run the `kubectl top pod` command ``` kubectl top pod ``` Examine the `CPU(cores)` column of the output to get the answer.

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