Repos-que-me-gustan/devops-exercises
1
0
Fork 0
Code Pull Requests Activity

update

Browse Source
This commit is contained in:
abregman 2020-08-29 12:37:01 +03:00
parent a203beaad8
commit dedfa71656
1 changed files with 98 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

99
README.md
View File

@ -4384,6 +4384,16 @@ Separate configuration from pods.
Scale the number of pods automatically on observed CPU utilization.
</b></details>
<details>
<summary>When you delete a pod, is it deleted instantly? (a moment after running the command)</summary><br><b>
</b></details>
<details>
<summary>How to delete a pod instantly?</summary><br><b>
Use "--grace-period=0 --force"
</b></details>
<details>
<summary>Explain the "Service" concept</summary><br><b>
@ -4413,7 +4423,7 @@ More on this topic [here](https://kubernetes.io/docs/concepts/services-networkin
<summary>Explain Readiness probe</summary><br><b>
</b></details>
#### Basic Commands
#### Kubernetes Commands
<details>
<summary>Which command you run to view your nodes?</code></summary><br><b>
@ -4524,6 +4534,12 @@ kubectl api-resources --namespaced=false
kubectl delete pods --field-selector=status.phase!='Running'
</b></details>
<details>
<summary>How to display the resources usages of pods?</code></summary><br><b>
kubectl top pod
</b></details>
<details>
<summary>What is Minikube?</summary><br><b>
@ -4558,10 +4574,22 @@ Setting the replicas to 0 will shut down the process. Now start it with `kubectl
<summary>What happens to running pods if if you stop Kubelet on the worker nodes?</summary><br><b>
</b></details>
<details>
<summary>What happens what pods are using too much memory? (more than its limit)</summary><br><b>
They become candidates to for termination.
</b></details>
<details>
<summary>Describe how roll-back works</summary><br><b>
</b></details>
<details>
<summary>True or False? Memory is a compressible resource, meaning that when a container reach the memory limit, it will keep running</summary><br><b>
False. CPU is a compressible resource while memory is a non compressible resource - once a container reached the memory limit, it will be terminated.
</b></details>
<details>
<summary>What is the control loop? How it works?</summary><br><b>
@ -4640,12 +4668,81 @@ kubectl create secret generic some-secret --from-literal=password='donttellmypas
kubectl create secret generic some-secret --from-file=/some/file.txt
</b></details>
#### Kubernetes Storage
<details>
<summary>Explain "Persistent Volumes". Why do we need it?</summary><br><b>
</b></details>
<details>
<summary>What types of persistent volumes are there?</summary><br><b>
* NFS
* iSCSI
* CephFS
* ...
</b></details>
<details>
<summary>What is PersistentVolumeClaim?</summary><br><b>
</b></details>
<details>
<summary>Explain Storage Classes</summary><br><b>
</b></details>
<details>
<summary>Explain "Dynamic Provisioning" and "Static Provisioning"</summary><br><b>
</b></details>
<details>
<summary>Explain Access Modes</summary><br><b>
</b></details>
<details>
<summary>What is Reclaim Policy?</summary><br><b>
</b></details>
<details>
<summary>What reclaim policies are there?</summary><br><b>
* Retain
* Recycle
* Delete
</b></details>
#### Kubernetes Misc
<details>
<summary>Explain what is CronJob and what is it used for</summary><br><b>
</b></details>
<details>
<summary>What QoS classes are there?</summary><br><b>
* Guaranteed
* Burstable
* BestEffort
</b></details>
<details>
<summary>Are there any Kuberenets tools you are using?</summary><br><b>
Kubectx, Kubens, ...
</b></details>
<details>
<summary>Explain Labels. What are they and why would one use them?</summary><br><b>
</b></details>
<details>
<summary>Explain Selectors</summary><br><b>
</b></details>
<details>
<summary>What is Kubeconfig?</summary><br><b>
</b></details>
#### Submariner
<details>