DAY-37 | KUBERNETES SERVICES DEEP DIVE| LIVE DEMO | LEARN TRAFFIC FLOW USING KUBESHARK |

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Hi Everyone, In today's class Day-37, We will learn about Kubernetes Services in Live Demo.
Have you watched a lot of videos on Kubernetes Service and still not clear on how does the services work in real time, This is the best video which demonstrates the services using a traffic debugger tool called KubeShark.
Watch the video till the end to understand how services handle Load balancing, Service discovery and Exposing applications to outside world.
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[@prajktamali6781]

You are the best... I am waiting for my next switch to happen after this... More power and more luck to you..... 🤩😊😊 thanks bro...

[@AbhishekVeeramalla]

Thanks for the support

[@nirmesh44]

i have never seen such a clear explanation. even whole series is superb. can't thank you enough 😊

[@AbhishekVeeramalla]

❤️

[@payaldaki832]

thanks Abhishek!!! for this awesome course. its day-37 and I learned lot of things from this course. As a fresher I start my learning from the scratch and if I got job then this credit goes to you Abhishek!!. again thank you so much for your informative content. 😍😍

[@AbhishekVeeramalla]

😍

[@SudhakarGummanahaliNagaraj]

Abhishek your awesome .......i don't know how to acknowledge ur efforts ....hats off to you

[@AbhishekVeeramalla]

So nice of you. Thanks

[@raghu7371]

Abhishek, Hats off to your efforts. You are doing a great job. 🎉 I have suggested your videos to all of my friends and colleagues. Thanks is a small word. 🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏.

[@AbhishekVeeramalla]

Means a lot, thanks !!

[@jyothi-ox4fx]

one small step was added from my end to video. we need to push to dockehub or registry once docker image built before depoying into kubernetes cluster. if you guys knows before me, please ignore.

[@reneshmlal2809]

Thank You soo much ❤

[@deepakalab1363]

Thanks

[@mla_is_live]

Thanks buddy . I am just stucked for 30 min then came back here saw comment 😅 It worked 🎉 Once again thanks

[@jyothi-ox4fx]

@@shaikhsupdu-z9g what error you are getting. is it related to docker image. my comment is related to docker image. we need to push image to docker hub once it is built. So that Kubernetes cluster pick from Docker hub or registry. I hope this information is helpful.

[@mathangis97]

Thank you so much for explaining it so clearly, Abhishek. Can you please do a detailed video on Kubeshark in your upcoming Kubernetes troubleshooting videos? It would be really great if you talk in depth about this tool for debugging and troubleshooting the flow of network packets.

[@harshal4877]

Thanks sir for this amazing free tutorial 🤩

[@AbhishekVeeramalla]

Always welcome

[@filucian]

Hi Abhishek, I had to do 2 additional steps to access Nodeport outside Minikube cluster @27:00 timestamp on Mac M1. Step 1: minikube tunnel Stpe 2: minikube service --url I see that it is not needed in your setup. Am I missing anything here? Thanks a lot for these amazing tutorials 🙏

[@shantanusarode2777]

Did you ran both commands in two different terminals? As I am still unable to access it outside

[@madhavmundhra2698]

@@shantanusarode2777 same

[@vback4238]

Awesome video!!! Thank you for showing us how to be experts!

[@AbhishekVeeramalla]

Glad you enjoyed it!

[@nishanttyagi931]

Well explained. It will be great help if you can have one round of demo on Any Cloud service Provider which can demonstrate the how loadbalancer kick in auomatically by cloud service provider for Loabalancing type service.

[@AbhishekVeeramalla]

It happens automatically, dont worry much about it :)

[@rayganmudberry375]

hello abhishek. how many total session will be in this course. and Please cover at least 5-10 project hands on. you're doing great job here for community. thank you so much.

[@AbhishekVeeramalla]

I will try my best on that :)

[@alamzia2905]

you are awesome...my suggestion to you is that after explaining the concept you should do a recap of it.

[@0986rashmi]

Yes Correct if we get the summary of it , it will be helpful may it can be done in the creative way like list some 10 to 15 questions on the topics which will help to revise the topic there and then . Helps to retain the concepts easily as well .

[@shristisingh187]

every min of your vdo is like great!!

[@shagunshish]

Thank you for great session.. Please upload realtime project on ci/cd pipeline with almost covering tool like docker,Ansible,K8S

[@AbhishekVeeramalla]

Sure

[@Vishwask22]

Hey Abhishek! Thanks for the clear explanation. If I want to do the same in EC2 instance do I need to install minikube in it? Because the AWS will allocate IP with the help of CCM if i didn't installed Minikube.

[@jaykumaranbu7173]

Nice explanation. It would be nice if you take one session about Service Mesh. Thanks

[@AbhishekVeeramalla]

Sure

[@divanshukhanna5407]

Here I will not share score card but will spread love 🎉🎉🎉🎉❤ awesome sir nice concept

[@vijaya4025]

You are a gem thanks man❤️‍🔥

[@AbhishekVeeramalla]

🙌

[@saikrishnajonnala9290]

Thank you abhishek!!! for example I have multiple services like it is running on different ports 3000, 3001, 3002, 3003, 3004. Here I will give in service file target section for port number of application. But external port number in service file what need to give. In this session you are running one application 8000 is container port and mapped with 80 for host. If have multiple applications running on different container parts how to map and configure.

[@AbhishekVeeramalla]

You can give each service a different port number

[@saikrishnajonnala9290]

@@AbhishekVeeramalla means are telling host ports right?

[@rohanekar]

​@@saikrishnajonnala9290no dear , you need to set port on service

[@Rorschach_ind]

Thank You Sir! This video was awesome!

[@AbhishekVeeramalla]

Glad you liked it!

[@shashankchoubey9253]

awesome demo, i practiced, everything is running, thank you :)

[@sujeetrai8326]

Hi, I am facing an issue while accessing application by using service nodePort, clusterIP level it is accessable .could you please help me?

[@SachinY94]

did you execute the load balancing part using kubeshark in ec2 instance ? I am facing some issue in installing the kubeshark

[@abijithsm412]

Abhishek bhai I have started learning from your Course it’s easy to understand and bhai one more thing can you make a video on python like how much python is needed for Devops and what all should we learn

[@AbhishekVeeramalla]

I already made a video on Python. You can also check my website for Python. python-by-examples.readthedocs.io/en/latest/ It just has topics what DevOps engineers required.

[@abijithsm412]

@@AbhishekVeeramalla Thankyou bhai❤️

[@sharan.2822]

one small contribution from my side before deploying into the kubernetes cluster we need to push the docker images to the docker hub registry

[@syedjohn6745]

Crystal clear explanation....Thank you Sir

[@AbhishekVeeramalla]

Welcome !!

[@prasadarao1706]

Excellent Session.Thanks Abhishek,

[@AbhishekVeeramalla]

Glad you liked it

[@nithinys4634]

thanks sir for the excellent explanation😍

[@AbhishekVeeramalla]

❤️

[@machinaanilkumar2303]

Thank you!!!

[@diegoalejandropuertolopez1527]

Thanks so much Abhishek, one question if I create a service of type node port but my node is an ec2 instance with public ip, I still cannot access trough the global internet to it?

[@maheshnagaladinne439]

I think nodeport service doesn't allow access to the global internet, we should use the help of load balancer for it.

[@gunjankhanal7772]

Very Nice Abhishek Ji, keep it up

[@AbhishekVeeramalla]

Thanks a lot

[@Abhishekkumar-lu7rf]

Nice explanation Anna ❤️😊

[@AbhishekVeeramalla]

Thank you so much 🙂

[@sureshmadabatthula5848]

Abhishek, you have become my god.

[@AbhishekVeeramalla]

🥹🥹

[@testtt5983]

Thanks bro, for the awesome content 👌👌

[@AbhishekVeeramalla]

Glad you enjoy it!

[@visheshsingh3235]

Hi Sir Please create a video where we can understand the certification path for Kubernetes and after how many years of exp we should go for next certification after CKA

[@naveenm.b6634]

Hi sir, when start docker ur using ec2 instance, after that ur going use command line to create images in local system, how can you explain sir i didn't understand, in kubernets ur using the same way please explain me sir

[@chandrasekhar7147]

thanks for this good content

[@AbhishekVeeramalla]

Welcome

[@sujithadr]

Excellent Abhishek

[@AbhishekVeeramalla]

Thanks

[@RajeshKumarRamesh]

Nice video.Thanks Abhishek😊

[@AbhishekVeeramalla]

Welcome

[@prayagsapar5537]

Hi Abhishek anna I have understood the concept of Cluster Ip Nodeport and load balancer But I am facing challenges to perform practical after watching 2-3 times ..

[@sujeetrai8326]

Yes I am also facing an issue, I am not able to access application while using service nodePort, what problem you are facing ?

[@CryptoTalkswithNN]

@@sujeetrai8326 It shows me Connection Refused if I try to do minikube ssh and use cluster IP. Even if I try to use minikube IP on my browser, nothing appears!

[@ammabalasimha]

Hi Bro..I am getting confidence while watching ur videos ...Awesome explanation. Now I m in a position to ask doubts, one doubt here. Let's say application is not on cloud(i.e.; it is on premise) but deploying on Kubernetes, in that case how external world can access applications deployed on Kubernetes in Realtime. do we use Ingress controller to expose applications to external world?

[@avinashreddy2309]

Hi Abhishek, if possible, can you please make detailed video on Kubeshark.

[@538sureshs7]

hi sir thanks for such a wonderful explanation and another thing is that for deploying the k8s cluster if we are using ec2 instance i will get billed more ? because i have installed docker desktop that time my pc is not supported for VM it was very slow , if we are using cloud provider means the ram and cpu from cloud its self will take right ? and how you use the configuring things on you local CMD same as well need to do by remote CMD right ?

[@kyawzawaung3712]

Thank you so much.

[@AbhishekVeeramalla]

You're welcome!

[@andresm9051]

kubeshark is suitable for production?

[@faisaliqbal7382]

Great. Thanks

[@AbhishekVeeramalla]

Welcome

[@prashantpowar9269]

Informative 🙏👍

[@AbhishekVeeramalla]

Thanks alot

[@rohitshinde2411]

Hie Abhishek sir , I am preparing for cka exam and your k8 part is good to understand basic concepts.... If possible then also make a videos on cka ckad docker certification exam importance or series with respect to syllabas or how to crack or if someone from your contact who is attempt these certification then his interview.

[@AbhishekVeeramalla]

ok sure

[@AbiramiBalu-nc7re]

Thanks for this big effort abhi bro. is kubeshark used in organization for live traffic or any other tool in organizations.

[@krishnatejaAkella]

Hi Abhisek do loadbalancer will work on onprem or private cloud?

[@gpldakhil]

Time line : 34:58 --> 30007 port is node,port 8000 is target port which is mentioned the image file for app. what about port 80, Is it container port?

[@TravelandMore3107]

Yes,port 80 is a container port

[@ravindraravi7435]

Thank you ^^

[@AbhishekVeeramalla]

You're welcome 😊

[@DeepakSingh-o6n6p]

Amazing Video 🔥

[@satyanarayanakondeti2652]

Must we create a dockerfile and create image to give it in deployment yml file as image?

[@techslife-on]

Hey Abhishek, Thanks for the amazing content 09:32 Why do you use Dockerfile? It's runtime env in k8s right? Pls correct/reply me

[@venkatindraganti9549]

Hi Abhishek, One quick question if we use kubernetes itself as distributed edition in our project. Will there would be any kind of UI to monitor the pods health likewise in openshift console?

[@rajukattom2492]

Great session

[@swatikadam8572]

Hi Abhishek.. i have few queries which are as follows: 1. i tried running the container using docker file present in your git repository(mentioned in your video) but unable to do so as after running the "docker run " the command becomes unresponsive and I can see the container in exited state in "docker ps -a" cmd Also i tried same thing with nginx docker file , the container was successfully created, so unable to perform this demo. 2. I faced problem with this Django application in Day 25 demo also my webpage was not opening giving error "site can't be reached" after configuring all the things mentioned by you. please guide me what need to be done. Thanks in advance 🙂

[@gowrirayi]

very good information, but u went very fast , wanted to cover so much information in one shot I guess.

[@Kannavolgs37]

You did amazing concepts. My question is i install VMware workstation on top of my pc and top of VMware i installed Ubuntu server as kubernetes cluster and worker nodes while I am trying LB external ip is pending. So how can I get public address for my Ubuntu server where installed in VMware workstation?

[@AbhishekVeeramalla]

Like I told you in the video .. It depends on your cloud provider .. if you are running on your personal laptop .. u will not get the external IP. Unless u use metallb

[@ranjeetbadhe]

Kubeshark we are deploying on MAster node or Worker node?

[@SGZ123]

Hello, is it actually used on production level?

[@Itsmedev8336]

hi sir, nice explanation, iam getting connection refused when i execute curl -Lhttp command .What to do for this problem?

[@AbhishekVeeramalla]

Thanks !!

[@jayanandini5418]

Hi, try to push your image to your docker hub.. First authenticate your docker hub id in your terminal then push the image, again pull and then apply the deployment.. Then minikube ssh and try to curl.. It will get connected

[@sirishak83]

Thanks for the wonderful video. I am getting an error when trying to apply the deployment.error parsing deployment.yaml:error converting YAML to Json.I am working with command prompt . I am unable to run any deployments, is there something I am missing, thanks for your help!!

[@utkarshtenguria3836]

Love the content

[@AbhishekVeeramalla]

Awesome

[@reneshmlal2809]

Thank You ❤

[@sharan.2822]

those who are doing this on their laptop should have the windows pro version the education version of windows will not have the windows feature called hyper-v if you have the pro version then only we can run the minikube on the vm otherwise by default your system will take the docker as a driver

[@bilalosmany5022]

is there a detailed video on Kube shark please send link for abhisheks Kubeshark demo video

[@kislaysinha9772]

thankyou sir

[@AbhishekVeeramalla]

Most welcome

[@msatyamounika]

Hi Abhishek. At 28:22, I am unable to access the application through curl and through the browser as well. The error states: curl: (28) Failed to connect to ip-address port 30007 after 21032 ms: Couldn't connect to server. I tried multiple times. But couldn't solve the issue. Can you help me with this.

[@DAILY_JOB_UPDATES200]

Verify that the application within the pod is actually listening on port 30007. kubectl exec -it -- sh Inside the pod, check if the application is running and listening on port 30007.

[@abhilash_yadav]

great work 😍

[@AbhishekVeeramalla]

Thank you! Cheers!

[@ravikishore8673]

28:22 I have created the deployment and service. While I am trying to access the app using curl. I am getting curl (28) error couldn't connect to server. Please help me

[@cooper6470]

even i'm stuck at the same thing, did u find any solution?

[@ravikishore8673]

@@cooper6470 noo but by using ingress controller I got the output

[@Pawan-1858]

Did you check the pod running State or not

[@Raadha_Ji]

thanks

[@AbhishekVeeramalla]

Most welcome

[@nishanbaral5124]

in 28:22, I am not able to access the traffic with nodePort. After some search I can access with the command minikube service , which seems like it is tunneling my request to different minikube ip in a random port (not the port mentioned in service.yml). With this new tunneled url, there I was able to access the traffic. But can you explain me why is this and what could be my mistake ? It seems like it is little inefficient way, since I have to keep a terminal open with minikube tunnel running. Am I correct ?

[@deepakreddy1429]

hey im also facing same problem i cannot access using nodeport ,connection refused is appearing how did u solve it??

[@nishanbaral5124]

@@deepakreddy1429 You can run this command: minikube service --url in a different terminal, which will give you a new url and from there you can access the traffic. This command essentially is tunneling your :30007 request to a different url. This different url you can use to access using both curl or from your browser. If this is not clear, you can just open a new terminal and type minikube service command, it will display you all the process thats going on, under the hood. I hope it helps.

[@kumaraswamygorja]

i am also facing the same issue too, command minikube service , which seems like it is tunneling my request to different minikube ip in a random port .Even with this new tunneled url i am not able to access the traffic. Please post here if you find the solution.

[@nishanbaral5124]

@@kumaraswamygorja I am not sure what problem you might be facing. In my case, tunneling request to localhost url with random port worked well. It is very easy to make mistake with label and selectors, just a typo can mess up the entire workflow, so maybe confirm that your yml files are in sync.

[@kumaraswamygorja]

@@nishanbaral5124Thankyou,it worked for me as well.

[@kavyareddy6656]

Hi Abhishek bro can please make a video How would you auto-scale the deployment based on network latency instead of CPU?

[@AbhishekVeeramalla]

If there is network latency.. auto scaling won't help .. multi region or cross region replication will help :)

[@-XSX-]

When will we expect a dedicated video on kubeshark....?

[@shayelasharma1039]

Hello abhishek, I am launching cluster via kubeadm on ec2 instances. I am creating loadbalancer service but the external ip is in pending state and external ip is not generated, can you please help or give some tips.

[@520srikanth]

Bro port is for service inside pod and what is targetport and nodeport in svc yml file?

[@fadhilituguta4893]

Thanks Abhisheki .I have a question though do you install Kubeshark on different terminal right?

[@AbhishekVeeramalla]

It does not matter. You can also run it as a background process

[@suhasiniaddanki7304]

I am getting little confusion about the service discovery concept in this video. Please let me know how exactly service discovery works

[@AbhishekVeeramalla]

Please watch the previous video on services .. Day 35 .. service discovery is very well explained

[@heysourin]

Sir why deploying 'deploy.yml' is required before deploying 'service.yml'? and Thank you for everything sir..🙏

[@AbhishekVeeramalla]

Please watch the videos in the same order. I have explained that

[@heysourin]

@@AbhishekVeeramallaSir, I am watching in order. But it looks like I have missed something. Let me watch again 😅.

[@DailyTrendspotter]

Hi Abhi, How i can delete the running deploy with different image? Eg: there are 3 deploy running on nginx and 2 in python, how can i delete the either one image. Please help me here

[@mridulpurohit5625]

hello abhishek, i'm confused about cluster ip, pod ip, port of your application , nodeport

[@AbhishekVeeramalla]

Please watch videos before this, I explained them clearly

[@StockGarjanaHindi]

Hey Abhishek. Could you please explain different ports used in this video. Timestamp 26:30

[@anshuagnihotri9489]

I am using aws instances but in external IP showing pending

[@rohanekar]

Nice one ☺️

[@AbhishekVeeramalla]

Thank you! Cheers!

[@LittleStepsEveryDay-bk2fe]

Why my docker image is not building ,, showing error? at 05:54

[@shaikhsupdu-z9g]

same here did you get the solution if yes plase guide me

[@hari4319]

Yes for me also

[@healthyliving3095]

@@hari4319 You can fix it by adding below line to your Dockerfile before the RUN command. ENV PIP_BREAK_SYSTEM_PACKAGES 1. User . Kudos to @adewaleayeni-bepo2072

[@healthyliving3095]

@@hari4319 add 'ENV PIP_BREAK_SYSTEM_PACKAGES 1' in your docker file before RUN command.

[@prakashbohara9909]

in realworld projects how traffic checking done whether it's in monitoring tool or tool like Kube shark

[@AbhishekVeeramalla]

Kubeshark can be used in realtime

[@prakashbohara9909]

@@AbhishekVeeramalla ok got it ... Thanks !

[@komalnimje7669]

Sir, What will happen if we don't expose the port? Will the application be accessible or not?

[@AbhishekVeeramalla]

It will not be accessible from outside

[@computertricks8474]

sir kind request facing issue to create image of the python it said externally-managed-environment . i am also follow the env environment in python but still facing this issue.

[@sweditramteke8761]

is it Mac m1?

[@SalmanShaikh-jy4nk]

@@sweditramteke8761 You can use rm /usr/lib/python*/EXTERNALLY-MANAGED && \ after apt-get install -y python3 python3-pip && \ I have tried as i too have the same mac M1

[@shaikhsupdu-z9g]

error:error: externally-managed-environment fix :If you run into the error ERROR: EXTERNALLY MANAGED ENVIRONMENT You can fix it by adding below line to your Dockerfile before the RUN command. ENV PIP_BREAK_SYSTEM_PACKAGES 1

[@dev.jivendra]

@@shaikhsupdu-z9g same error but just continue the demo even you are unable to build image locally , in deployment.yaml file change the image : abhishekf5/python-sample-app-demo:v1 , use this image and enjoy next step

[@amansharma-xh6og]

@@shaikhsupdu-z9g thank you so much was stuck on this, from a long time. It worked

[@g.s.v.r2686]

anna , while in case of lb , i am doing edit command replacing type from nodePort and loadbalancer . But it's showing that it was edted in /tmp file . or even , to edit in the form of yaml file , what do we need to give the cluster ip and ingress ip

[@sandydj777]

Hi Abishek what happens if a node goes down and you sre using node port type service

[@AbhishekVeeramalla]

Very good question. You will learn the answer Ingress class but if you want answer now, usually there will be a ingress controller which constantly checks for the health of the target pods (nodeIP:port) and only forwards the requests to healthy pods on healthy nodes.

[@akashkilaru3338]

how mny pods are generally created in realtime?

[@AbhishekVeeramalla]

Depends on number of apps

[@vimaladeshmukh4017]

Can we incorporate kubeshark in our company..??is it safe ..??

[@AbhishekVeeramalla]

Kube shark is a good tool about integrating it in your company .. I need to understand the architecture you have , I cannot comment without that

[@muralikrishna-dy3sw]

is there any way to access with nodeport, coz some restriction is there for creating load balancer

[@AbhishekVeeramalla]

Yes, you can access nodeport as well

[@sweetyreels9307]

Hi Abhishek, can i put this on my resume will take one python-Django application and that application i will deploy on Kubernetes ,create deployment file and replica sets. and do service deployments on this application that are 1.nodeport service, 2.cluster Ip node service and3. load balancer node service. this is how i will expose applications to outside world and within the k8s cluster and within the organization.

[@DAILY_JOB_UPDATES200]

yes u can put it.

[@abhinavpaul5960]

in the service.yml file what is the meaning of the port:80 , targetPort:8000 is the application which is running in port 8000 but what is the port:80 means ? video time : 24.11

[@sweditramteke8761]

listening port for service

[@EphsonG]

DevOps God!

[@aaravshukla5794]

Hello Abhishek Sir, I have one doubt that I need to push image to the docker hub before using it in thi yaml Manifest or we can use it without pushing it , When i used an image that I have to pushed to Docker Hub then my service works but when I use the image just after buiding it , it doesn't work. Can you please specify it ? I have been stucked here for last 1 week. Please help me

[@shashankbiradar2563]

you have to push it to your docker hub because the kubernetes pulls the image from your docker hub

[@user1947-t6c]

will you please share cluster IP yaml

[@SurajM-qs3wx]

Abhishek when i run kubectl apply cmd it shows "imagepullbackoff" error , how to troubleshoot?

[@sreekanth_ksk]

Your image is not there in Docker hub

[@karthikvijayasarathi89]

it means the image you are using is 1. Doesnt exist in the docker hub or 2. there might be a typo in the image name you have typed.