Configuring and Managing Storage (volumes) in Kubernetes

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In this video, we will discuss the need for storage in container-based applications and then we will Kubernetes objects that will provide those services to our container-based applications. We will cover both temporary storage (Ephemeral volumes) as well as permanent (Persistent Volumes “PersistentVolume”) and how they can be claimed for PODs through the “PersistentVolumeClaim” object and how those volumes are mounted inside PODs. We will also cover both static (PersistentVolume) and dynamic storage provisioning (StorageClass) and how the life cycle of resulting volumes is managed when different "reclaim" policies are applied. We will also cover setting up NFS client and server installation for the demos.
Links:
Demo scripts: github.com/gar...
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Опубликовано:

2 окт 2024

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Комментарии : 17

@darahaskopparapu 8 месяцев назад

Awesome Content ! Explained and demonstrated PV, PVC, SC so well !

@spiraldynamics6008 6 месяцев назад

Thank you ❤

@MurtazaMotorwala53 9 месяцев назад

You made "storage" really simple in K8s. I was always confused with these concepts but your explanation made it really clear and simple. Thanks a ton and keep up the good work :)

@kishor4910 Год назад

Nice work! Gary!! Can you please make same video for EKS storageclass. Thank you!!👍

@TheLearningChannel-Tech Год назад

Hi and thanks. I currently don't use Amazon cloud but using it shouldn't be a big deal, after all, is just a storage class.

@tracylee8446 2 года назад

Hi Gary ! nice ! I was waiting for this PVC video for a long time ! haha just saw it, good video!

@TheLearningChannel-Tech 2 года назад

Thanks Tracy, and glad it was helpful!

@omega1962 Год назад

In Persistent Volume, when created (automatically or manually), where is the PV actually located? Is it inside one of cluster worker node? Is yes, will that PV be shared or mapped to other worker nodes as well?

@taka01110011 Год назад

It depends, how PV was provisioned. It might be a NFS volume shared over network, iSCSI LUN provided by huge SAN storage etc. So if we have a small cluster (demo, learning environment) - we can provide a local volume as PV. For production ready clusters - more probably that it will be SAN storage. So as answer to your question, storage volume can be mounted at all the nodes (and must do), because if not - we can forget of high availability (ex: node maintenace). Hope it helps. p.s. forget to mention - the file system has to support concurrent working (locking mechanisms etc.),

@omega1962 Год назад

@@taka01110011 thx for the excellent explanation. In the lab env cluster scenario, if we create a pv which is of a local worker node and if that worker node fails, will the data be lost?

@taka01110011 Год назад

@@omega1962 In the case of provision PV as local partition the answer is yes, if the node which provides local drive (or parition) for PV will die (ex: hard drive failure) - data will be lost of course. So, to avoid such a scenario you can create a volume with HA (high available) file system (ex: GlasterFS, DRBD volume etc) and provide it to all the nodes, also you can use separate VM as a NFS server.