Service Mesh: What & Why ? - a new series

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Today I kickoff a new series about service mesh technology.
What is a service mesh and how it facilitates service to service communication
What are some of the pain points of scaling microservices, especially when dealing with retry logic, TLS, authentication, auto backoff, metrics and tracing.
We cover the concepts of how a service mesh addresses some of these issues.
And move to build a good use case to kick off the series.
In the following episodes, we'll use this as a foundation and look at Linkerd and Istio.
Checkout the source code below 👇🏽 and follow along 🤓
Also if you want to support the channel further, become a member 😎
marceldempers.dev/join
Checkout "That DevOps Community" too
marceldempers.dev/community
Source Code 🧐
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github.com/marcel-dempers/doc...
If you are new to Kubernetes, check out my getting started playlist on Kubernetes below :)
Kubernetes Guide for Beginners:
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• Kubernetes development...
Kubernetes Monitoring Guide:
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• Kubernetes Monitoring ...
Kubernetes Secret Management Guide:
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• Kubernetes Secret Mana...
Like and Subscribe for more :)
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Twitter | / marceldempers
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Music:
Track: Rap Beats Type Instrumentals - Free G-Eazy Beat: Fade Away | is licensed under a Creative Commons Attribution licence (creativecommons.org/licenses/...)
Listen: / g-eazy-beat-fade-away
Track: Fox Beat 2 - Jeff Kalee - Pillow Talk - Royalty Free Vlog Music [BUY=FREE] | is licensed under a Creative Commons Attribution licence (creativecommons.org/licenses/...)
Listen: / jeff-kalee-pillow-talk...
Track: Fox Beat 2 - Joakim Karud - Balloons - Royalty Free Vlog Music [BUY=FREE] | is licensed under a Creative Commons Attribution licence (creativecommons.org/licenses/...)
Listen: / joakim-karud-balloons-...
Track: souKo - souKo - Parallel | is licensed under a Creative Commons Attribution licence (creativecommons.org/licenses/...)
Listen: / parallel

[@newyorkmathan]

Best video I viewed so far on Service Mesh introduction.

[@Misanthrope84]

My God mate, you're an excellent teacher!!! Best explanations of tech I've heard in my life. Also your triceps are on point 🤟

[@itqna6781]

Anytime better than paid videos.. Thank you

[@krishnamohanyerrabilli4040]

This is literally gold, Now I understand how to learn something 1) knowing what are the problems a tech tool can solve 2) understanding why we use X tool 3) Apply your learnings This is what I take from this video, thanks a ton

[@hareepjoshi]

This is a very good intro to service meshes.

[@kesanupalli]

Crisp and Clear. Explanation is too GOOD

[@salborough2]

awesome video thanks Marcel 👍

[@dheerajjoshi525]

the way you explained concept makes micro service + service mesh easier to understand. Thank you. Keep posting such videos more.

really nice and strait forward explanation. I love your videos

[@exit-zero]

This would be a fantastic prerequisite knowledge to start design distributed system. Thanks!

[@polmaksim]

Love your tutorials. Service Mesh - just what I was waiting for so long. Thank you!

[@MateusMuller]

By far the best technical channel I've ever seen, really nice content! A suggestion: chaos engineering.

[@silentwatcher13]

You are a genius man, few days back i was wondering that this guy needs to create a video on service mesh , & i got the surprise. ThanKs man, keep doing good work ✌🏼

[@phil7587]

Very clear and simple to understand the necessity of service mesh. Thank you so much, you save me a lot of time

[@ashleyspianoprogress1341]

What an excellent video! By far the best introduction to docker, kubernetes, and service mesh that I've ever found. You deserve 10x more subscribers.

[@vincentnelis5354]

You're my favorite technical channel by far. Thanks so much for your work

[@srieen100]

Beautifully explained Awesome clarity. Honestly i got lost with the topic with other KZbin videos This nails exactly what it is. You rock!

[@MrPitipon]

You are awesome. Your content is very easy to understand and go deep to technical. Thank a lots

[@drystack86]

Phenomenal channel. Love this guy so much !

[@ryandunn1177]

Great content, easy to follow and digest. Thanks

[@viktorgadachek3933]

7.5k subscribers!! Waw!! You are doing absolutely great! Very informative service mesh video. Waiting for the future servicemesh videos too. Please include Kiali network view component in those if possible. Great job!

[@luqmansen]

Super cool explanation, I love u DevOps Guy, many thanks!!

[@CarlosAndres-lv1zq]

Thank you for this amazing content.

[@mohamedhabas7391]

thank you for all the amazing lessons :)

[@HambaAllah-xn2zp]

Thanks for your great explanation!!!

[@Shinrak]

Thank you :) I like the way you explain in the videos

[@tal1296]

"If you can't explain it simply, you don't understand it well enough." -Albert Einstein, And you Sir, You know your stuff! Love your videos, They just hit the nail on t he head.

[@cd-stephen]

amazing teacher

[@Tanmay92]

I don't know how to thank you, You helped me a lot in understanding the service mesh technology. You are doing a great job.Please continue doing. I would like you should bring all new things developed around kubernetes.

[@Kushagra105]

Finally, Thanks for this lovely content.

[@akshayawate7239]

Awesome! Really excited to learn.

[@sureshramanan6053]

beautiful video! Thanks!!!

[@sureshramanan6053]

the traffic lane analogy for explaining the metrics of requests sent by service A and received by service B was awesome.. only that in the visual, A was receiving because traffic was incoming and B was sending cos traffic was going away :D

[@apf14378]

Really interesting topic, and really good video, gz

[@testuserselvaraj]

Thanks for sharing, also interested to see how to manage the network latency.

[@NiteshKumar-do4en]

More content on this watched whole video excited to see more .

[@ukaszdya223]

good job :) my Master 🙏

[@kirankumarsukumar]

I would really love to support this channel. Expect me to pay

[@casimirrex]

It is very useful session, Maximum how many cluster can we create using Kind?

[@devopskey6251]

Please made a video on kafka and zookeeper in k8s!

[@shashikanthreddy5872]

Thanks for your awesome videos.... Looking forward for more videos on ServiceMesh. My question is how does videos-web container integrated with videos-api & playlists-api? How does Videos-web know about Videos-api/playlist-api?

[@MarcelDempers]

In this simple demo, videos web runs as a web app (html). It has the URL of playlist api and accesses it via GET call. Videos Api is private and Playlists API is accessing videos API using a GET call over private DNS. This will evolve and an Ingress gateway will be introduced. See full docs here github.com/marcel-dempers/docker-development-youtube-series/blob/master/kubernetes/servicemesh/readme.md

[@athreyapatel]

Nice

[@ramanjaneyululingala1164]

Hi, so good. Could you please make a video on session replication between pods in kubernetes?

[@MarcelDempers]

Thanks 💪🏽I would highly recommend not to keep sessions in processes (pods), instead move session out (to something like a database). Processes should allow for concurrency (scale out) and share nothing among them. a great read about it here 12factor.net/processes

[@chaitanyapoosapathi3387]

amazing video!!!!!!! i am looking to learn a service mesh what would you suggest i should learn between AWS App mesh and istio?

[@MarcelDempers]

Personally I would start with Linkerd, then Istio, then also checkout Open Service Mesh. Linkerd is the most beginner friendly mesh out there and you can play around with all its functionality locally using a local kind cluster. It will help you understand all the functionality of a mesh. Istio is slightly more advanced to understand, but once you've played with Linkerd, Istio becomes a real breeze. You don't have to go too advance with Istio, just play with the basics. And finally, Open Service Mesh, will teach you the SMI concepts which may form the foundation of service mesh implementations on Kubernetes going forward. Linkerd kzbin.info/www/bejne/fpSQiXmGfal3oZY Istio: kzbin.info/www/bejne/gYarq6uKeMpoi8U Open Service Mesh : (video on the roadmap)

[@chaitanyapoosapathi3387]

@@MarcelDempers great!!!!!!!!thanks for the advice

[@GK-rl5du]

Thanks a lot for the great content man, slightly off topic but there's been some buzz in 2020 regarding Container Operating Systems (BottleRocket, FlatcarLinux, Fedora CoreOS etc..). Is this topic in your rader ?

[@MarcelDempers]

I've heard about these, definitely going on the radar 💪🏽

[@nyanRETARD]

Just awesome! But I have one question. If you have your Kubernete cluster on DigitalOcean inside one VPC network, which means that communication between pods is already secure. So what would be the use case for service mesh with TLS connection between pods?

[@MarcelDempers]

Thank you 💪🏽 TLS between pods means the traffic is encrypted end to end. If your network is comprised, it would be increasingly difficult to sniff packets on the network.

[@fjgreger]

Many kubernetes cluster contain different Environment (prod, stage, Dev), different projects or multiple tenants, so it better to secure the communication.

[@Breadfruitmyfriend]

where did you get that Nginx ingress controller config from?

[@c0nsaw]

Can we get a detailed video on Velero cluster backup with restic please

[@fjgreger]

In Internet there are a lot of documents about velero. Depends on your configuration /setup for concerning solution EG medium.com/techlogs/using-velero-and-restic-to-backup-kubernetes-2f0f812da4db

[@MarkHorrocks1]

How do you maintain referential integrity between the videos and playlist databases? Can you do a video on microservice architecture and SQL databases to explain how monolithic apps can be broken into microservices when they all use the same SQL database?

[@MarcelDempers]

Ideally in world of distributed systems, services should not leak their data model and instead provide a contract thats backward compatible. In this case, playlists-api should not know how videos are stored by the videos-api. Only way to access the data is through the videos-api. The videos-api is able to change its backing service from MySQL to Redis without impacting dependent services as the contract on videos-api (accepting an ID on a GET request) remains consistent. So the videos domain is controlled by its endpoint and no other services should be able to access its database directly. I would recommend to try avoid sharing databases between services as its an anti pattern. 12 Factor is a great read on this 12factor.net/backing-services Microservice video series sounds like a good plan 💪🏽

[@ghauri001]

Best

[@user-hs4xt1oj4t]

what do you bench?

[@qngdt]

Small suggestion: You should use bigger font size and lighter theme when showing the code.

[@florianbachmann]

Yeah

[@BiohaZd5]

Love there videos, but please make the graphics slow down, watching images bump around the screen so fast is distracting.

[@SolveJohnsen]

Did you make it in 13:37 time deliberately?

[@CeezGeez]

noice!

[@rewardhole]

Will all videos in this series be so 13:37?

[@Swaad_Safar28]

Mate when you do port forward to playlist api to port 81 locally how does my browser understand it .. I mean you refreshed localhost in the url and it got the content.. same when you deployed db then you didn’t port fwd it but still you refreshed it and got the videos .. how this works ? Sorry if it’s a stupid question

[@MarcelDempers]

In the first part of the video I used docker compose, no port forwarding, so all services start and the content is there, that is why you can see it all. Later in the video we deploy each service, starting with videos web, at that stage, port--forward does not show any content, we deploy the next service and piece by piece you will notice content coming through in the browser.

[@jjuarez83]

How is this different or how does it relate to a APM product, say NewRelic?

[@MarcelDempers]

It's very different. NewRelic integrates at code level (SDK) so it gives deep observability into method\function tracing and instrumentation. NewRelic would compare more to Prometheus + Jaeger to a degree. Service mesh gives you more network level tracing focusing on endpoints. I.E When service A calls B, B's endpoint took 5ms to respond, but it does not instrument the code of endpoint B which is what NewRelic would do if that makes sense 💪🏽

[@SunnyG1987]

Awesomeness

[@artemp8267]

Great video with a lot of useful information! The animation is too dynamic and annoying though, it is difficult to read.

[@NiteshKumar-do4en]

Hey first to comment

[@catsgotmytongue]

what is with the vibrating / gyrating graphics lately ? It makes it hard to watch. Otherwise I love your content.

[@dougsellner9353]

I feel stupid (a compliment)