► Reference to YAML Configs: gitlab.com/nanuchi/kubernetes-tutorial-series-youtube/-/tree/master/configmap-and-secret-volumes 0:13 - Configuration Files usages in pods 1:13 - ConfigMap and Secret creating individual values (key-value pairs) for env variables 2:40 - ConfigMap and Secret creating files for mounting them into the pod 14:44 - Summary 👉🏼 For any questions/issues/feedback, please leave me a comment and I will get back to you as soon as possible. Please don't forget to subscribe and give me a thumbs up if you liked my video 😊🙏

@SuperDeb1985

3 жыл бұрын

what will happen if we delete file from volume from container ,will it be deleted from pod too ?

Nana the life saver of kubernetes developers

@TechWorldwithNana

3 жыл бұрын

I'm glad that you think so Raja 😅 Thanks for the support. Please don't forget to subscribe and share. 🙂

I signed up for java but they are also giving me work related to devops. This video is a life saver.😅

Thank you Naina! what an amazing tutorial and you got the greatest acumen to explain complex things. Kubernetes is no monster to me now after watching your videos. Thanks for being magnanimous and sharing your videos which are worth gold. God bless you!

after watching lots of devops toturials, everything is becoming a lot more easier. thanks for our great youtube content creators like Nana and others...

I have been watching some of the k8s videos. The animated diagrams and the way each sucbject is approached makes complex topics look simple. Tha's a rare talent right there.

@TechWorldwithNana

4 жыл бұрын

Wow, thank you for this comment! Glad you think so. If you want to support me, please share my video to people who are interested in learning k8s or devops in general. Would be very helpful :)

No doubt, when we talk about kubernetes your channel is the best

I love this video. I learn from a detailed explanation. Thank you so much!

I have always struggled to get a clear understanding of the use cases of configMap and secret but thanks to you for making it so simple to understand and remember.

@TechWorldwithNana

3 жыл бұрын

You're welcome Aditya. Wishing you all the best in your career. Stay safe. 😇

It became so much clear after watching your video. Great explanation! Thanks for sharing.

I play her vids as comforting BGM while I code other stuff :)

Putting a like before even watching., 👍👍👍

best channel to learn K8s. Explanation is simple and can easily be remembered. Brilliant!!

@TechWorldwithNana

3 жыл бұрын

Thankful for the opportunity to help Pallav. Your compliment is much appreciated. 😇

High quality education videos! Thank you for your great work ^^

Thank you so much for this video. I constantly come back to this and refer a few things.

this video was lifesaver for me thanks for these quality content

Best video on configmaps on KZread, thx!

Thank you so much for this vedio, from some days i m struggling on this topic and today your vedio appear like miracle to me♥️♥️♥️♥️♥️♥️

@TechWorldwithNana

4 жыл бұрын

You're welcome, really glad to hear that they helped you :)

Hi Nana, thank you for your videos they're incredible. I was wondering if you had a demo video for local persistent volumes?

This was amazing demonstration of config map.

perfectly explained.. really helped me all doubts ... youuuuu rocks !!!! thank you

Thankyou so very much ankita, this video lecture was like a walk on snow you made it just so easy. Keep it up!!

@TechWorldwithNana

3 жыл бұрын

Thank you for the encouragement Jaspal. Just the little things that I need to fuel my passion. Much appreciated. 😇

Thanks nana, you r genius, beauty with brain, such an extraordinary person. Thanks a lot. Grat work keep it up ❤❤

Great video Nana, tks so much for share this knoledge with us !!

You are great at explaining concepts. Keep it up!!

@TechWorldwithNana

3 жыл бұрын

Thank you Sandro :)

simplicity ! as usual awesome.

What a wonderful explanation - Must know concepts explained in very simple way. Well done :)

Thank you, the best explanation of this subject i found.

Waiting for your other videos on different volume types.

You are an amazing presenter. Good work.

@TechWorldwithNana

3 жыл бұрын

Grateful for the appreciation Saravana. 😅

WoWwwww thank you so much. You are simply great. I asked the content and you have recorded.😍😍😍😍😍

@TechWorldwithNana

4 жыл бұрын

Thanks Murali :)

Very helpful, thanks Nana!

I always learn something new thanks to you 🙏

Thanks Nana. that was a great explanation

Thanks Nana for the explanation and implementation

Its nice lecture am the fan of u, the way u r taking in to the topics keep on

@TechWorldwithNana

4 жыл бұрын

Thank you Deepak, glad you like my teaching style :)

Thanks a lot! I love your videos!

@TechWorldwithNana

4 жыл бұрын

Happy to see that you watch all my videos :) Thanks for that!

Thanks Nana for this tutorial. I find it very useful and Appreciate your good job.

Very good and precise tutorial!

@TechWorldwithNana

4 жыл бұрын

Thank you so much :)

HI Nana, Excellent Video & Nice the way of presentation. Thanks for your time for this. I just have one query on this. in POD definition file under spec: volumes, is it mean volume will create? and the files mosquite-config & secret-file will store on base machine?

nice walk through of Vol and Secret. Looking forward to learn about local volume as i got 'node affinity conflict' error on mac using docker-desktop

@TechWorldwithNana

4 жыл бұрын

Thanks, video will come soon!

@ro2010jo

2 жыл бұрын

@@TechWorldwithNana , Many thanks for the excellent videos. I found your explanations to be very useful. Have you finished/posted detailed videos for local and remote volumes, explaining the Yaml files? If so, can you please share the link?

Congratulations🎉 For 1 M

Thanks for the great explanation! Is there a way to mount a single file, like in docker or does it work only for directories

great and simple explanation

Great, good to start with basics

thank you! This helped me solve a problem with keycloak and realm-export.json. Does the overwrite create the file if the file doesn't exist, or does it simply overwrite what is already there?

Great video, really helpful!

@TechWorldwithNana

3 жыл бұрын

Thanks Ian. 😇

I love kubernetes. Just recently been doing some videos on it on my channel

excellent explanation!

Thanks Nana for your incredible video, I’ve a small question please How can I create that data: secret.file and how it’s equal to the secret data: params I don’t know how make them equal each other ?

La mejor explicación! te amo!

Great vedieo. Learned a lot from you. Thanks Nana. It looks like you have used a wrong screenshot at 16:13. while you used the top left with kind/configmap, you use kind/secret for using env variable case.

Wonderful video! At 7:34 you show the format of the config-file.yaml file. When I do the same, I get separate files; one for each key versus all keys and values being stored in mosquitto.conf What could I be doing wrong? Have K8 changed since this video? Thanks.

Hello Nana, Great course ,Is it possible to mount kubeconfig file this way ,so that the PODs can access them .I have a use case with that

Thanks for your beautiful explaination.please make and upload videos on statefulsets.

@TechWorldwithNana

4 жыл бұрын

Hi Mohammed! Thank you, yes I will make a separate video about statefulSets. Turn on the bell to get notified and don't miss new videos :)

you are awesome Nana!

Very good explanation. Please suggest if I have store these secret and configmap files in a separate secure location instead of keeping them with deployment files then how to put it in the deployment file..

Thank you so much, I learned a lot through these devops videos also could you help me understand if we can pass Configmap metadata name as variable if it’s dynamic in deployment pods.. along with keys.

Thanks for this. Is there a way to make them (configmap and secret) persistent?

Thanks .it is very helpful

@TechWorldwithNana

3 жыл бұрын

You're welcome Jayashree.😇

Very well explained

awesome explaination!!

What is best practice to separate development (local development) and production (k8s) ?

Hi Nana, Is there a way to append contents to the .conf file instead of overwriting the whole file?

Great!!!

Hi Nana, will spring boot be able to pick up application.properties file from /config location. Thanks for video

Wonderful Video Nana ❤❤

excellent example!!! it's possible use this volumeMount to declare envs, using cat /secret/secret.file?

Excellent!!!!

Thanks a lot!

Hi nana, which software are you using to create these animations?

awesome video!

Great explanation! One question: can we change the value of configmap mountes as a volume? I mean if i add a line into the file mosquito.file from one pod, will i be able to see it from another pod ? Thanks

@TechWorldwithNana

3 жыл бұрын

Thanks Sabri. No, you can't change configMap value from the pod.

I've gone through a lot of videos of yours pertaining to kubernetes and they've been really good and easy to understand. But i have one question here. If the requirement of a config file is known well before hand, is it better to bake it in the docker image while creating or is use of configmaps recommended ?

@TechWorldwithNana

3 жыл бұрын

ConfigMaps may change often, if you change the endpoint names, add new ones or change some config details. So by having it outside of docker image, you don't have to rebuild the image. Also you can pass the config map or secret to diff applications, if they both need the same service.

@hariharansiddharthsuresh1240

3 жыл бұрын

@@TechWorldwithNana Thank You!

Hi Nana, is it possible to create secret specification for creating secret from file, not from command line with --from-file attribute?

Guys please show some love on the comments, remember all this Kubernetes training is well made and besides it is free

you are the best!

super explanation

@TechWorldwithNana

3 жыл бұрын

Thanks 🙂

Awesome. It's an easy to understand concept. Do you have full courses in udemy?

Thanks nana🥳

@TechWorldwithNana

4 жыл бұрын

You're welcome :)

Can you please explain where do the symlinks that the newly sourced files via the configmap and the secret point to?

Hey it’s great video 😀

@TechWorldwithNana

4 жыл бұрын

Thanks, glad you like it :)

clean tqsm

Hi Nana, How to use configure Centralised configuration by using configmap in the kustomization.

Few questions: 1. Can you delete a configmap then deploy a new one while a pod is still running or using it? 2. Can you change something in a configmap while it is being used by a running pod? will the pod detect the changes in the configmap?

Grt tutorials Nana. Could you explain difference between secret and config map, except the data is encoded in secret as base64.... anyone can get the secret using 'kubectl get secret "secretname" -o yaml' and decode from base64, Is there any other key difference that iam missing?

Thank you so much for this video, can you also explain about ConfigMap generator to configure secrets & Certificates from json file

@TechWorldwithNana

3 жыл бұрын

Hi Bhavyasree! You're welcome. Hopefully we can add that to the pipeline. Appreciate the support. 🙂

hey Nana, they released XML for k8s, please talk about that

Thanks Nana did you create a persistent volume and pvc for this example I know in real world if the container gets restarted we lose all data ?

@TechWorldwithNana

4 жыл бұрын

No. That's the difference with configMap and secret. You don't need PV and PVC with them. They persist independent of the pod, so when you restart the pod, it will get remounted every time, so you don't lose the data. you can also use the same configMap and secret in multiple pods. For example if you have 5 pods that all need a client certificate, you create one secret and mount it in every pod. Does it clarify your point?

@armelgansop4039

4 жыл бұрын

@@TechWorldwithNana Absolutely 👌

I am applying the same mosquitto-config-components.yaml from your repo. I can see the Secret generated for mosquitto to use . But when i logged into the mosquitto pod, I do see /mosquitto/config but not the /mosquitto/secret directory. Any debugging step that can help. No errors on kubectl apply or kubectl pod

thank you

amazing

Hi, I want to have a fixed number of pods in K8 and each pod will have slightly different configuration, I want this because I want to divide the work among each pods, is there a way to do this ? Thanks in advance.

Can we share the storage volumes in between two pods in k8s cluster

Hi Nana, I just wanted to ask if do you have module for AWS parameter store for eks??

Hi Nana, suppose i am already having a json file in my container, I just need to replace a certain value in that file. What will i do in that scenario?

What if my pod wants to dynamically refresh the secret (password, if it changes) from configmap volume without restarting the pod?

Awesome :-)

@TechWorldwithNana

3 жыл бұрын

Thank you Vipin. That makes you awesome as well. 🙂

Hi Nana, I don't understand the point of secrets if I have access to secret manifest and can decode it?

What about versioning those files? I mean: For example, I have my code with a k8s folder with some files like: deployment.yaml, service.yaml, config.yaml... My question is: Do I must to add a secret.yaml file to the repo versioning? Thanks and your videos are so cool

@TechWorldwithNana

3 жыл бұрын

That's a very good question Wladimir. Regarding versioning of secret files, of course they shouldn't be checked in to the repository with other config files. So they are created locally, on the server itself or from your local machine where you execute kubectl commands. You can try to keep the history locally and/or on the cluster node, if others need access too.

@wchopite

3 жыл бұрын

​@@TechWorldwithNana Excellent. Thank you for your reply. I'm doing exactly what you are saying. Let me congratulate you again, your channel, your videos are very useful and a great resource. Thank very much!