Kubernetes Networking: Behind the Scenes

#1

Post by onig1990 » Wed, Oct 16, 2019, 8:19 AM UTC

Kubernetes Networking: Behind the Scenes
itnext.io

Re: Kubernetes Networking: Behind the Scenes

#2

Post by raesene9 » Wed, Oct 16, 2019, 10:55 AM UTC

If getting a better understanding of exactly how Kubernetes network is of interest, I'd also recommend this episode of TGIK https://www.youtube.com/watch?v=IhbJ3ll4usI

In general actually, I've found TGIK really useful in improving my understanding of the underpinnings of k8s. They have a load of deep dive episodes that focus on a specific part of the solution and generally have a load of hands-on examples.

Re: Kubernetes Networking: Behind the Scenes

#3

Post by Already__Taken » Wed, Oct 16, 2019, 11:31 AM UTC

raesene9 wrote: post #2

If getting a better understanding of exactly how Kubernetes network is of interest, I'd also recommend this episode of TGIK https://www.youtube.com/watch?v=IhbJ3ll4usI In general actually, I've found TGIK really useful in improving my understanding of the underpinnings of k8s. They have a load of deep dive episodes that focus on a specific part of the solution and generally have a load of hands-on examples.

Shame the audio got ruined somewhere along the way.

Re: Kubernetes Networking: Behind the Scenes

#4

Post by raesene9 » Wed, Oct 16, 2019, 11:45 AM UTC

Already__Taken wrote: post #3

raesene9 wrote: post #2

If getting a better understanding of exactly how Kubernetes network is of interest, I'd also recommend this episode of TGIK https://www.youtube.com/watch?v=IhbJ3ll4usI In general actually, I've found TGIK really useful in improving my understanding of the underpinnings of k8s. They have a load of deep dive episodes that focus on a specific part of the solution and generally have a load of hands-on examples.

Shame the audio got ruined somewhere along the way.

it fixes about 2:30-3:00 in.

Re: Kubernetes Networking: Behind the Scenes

#5

Post by k__ » Wed, Oct 16, 2019, 12:54 PM UTC

Did anyone do some measurements on k8s/container latency overhead in networks?

Re: Kubernetes Networking: Behind the Scenes

#6

Post by loriverkutya » Wed, Oct 16, 2019, 1:22 PM UTC

k__ wrote: post #5

Did anyone do some measurements on k8s/container latency overhead in networks?

Yes. And they are _really_ easy to find. https://machinezone.github.io/research/networking-solutions-... https://itnext.io/benchmark-results-of-kubernetes-network-pl...

Edit: added one more link

Re: Kubernetes Networking: Behind the Scenes

#7

Post by ITNEXT » Wed, Oct 16, 2019, 1:58 PM UTC

loriverkutya wrote: post #6

k__ wrote: post #5

Did anyone do some measurements on k8s/container latency overhead in networks?

Yes. And they are _really_ easy to find. https://machinezone.github.io/research/networking-solutions-... https://itnext.io/benchmark-results-of-kubernetes-network-pl... Edit: added one more link

I appreciate that you also shared Alexis Ducastel benchmark.

Re: Kubernetes Networking: Behind the Scenes

#8

Post by Already__Taken » Wed, Oct 16, 2019, 2:03 PM UTC

It's surprising k8s being so new seems to have no concept of ipv6

Re: Kubernetes Networking: Behind the Scenes

#9

Post by the_duke » Wed, Oct 16, 2019, 2:15 PM UTC

Already__Taken wrote: post #8

It's surprising k8s being so new seems to have no concept of ipv6

It does, in alpha.

Soon to hit beta though: https://github.com/kubernetes/enhancements/issues/508

Most internal networks still run IPv4, and will continue to do so for a long time.

Re: Kubernetes Networking: Behind the Scenes

#10

Post by sascha_sl » Wed, Oct 16, 2019, 2:16 PM UTC

Already__Taken wrote: post #8

It's surprising k8s being so new seems to have no concept of ipv6

Because ipv6 is not a simple addition, but a complex suite of new protocols meant to replace v4, except that is never going to happen in our lifetimes.

v6 should've simply been v4 with more bits