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Scale, for one thing.

Kubernetes is not a bad system but it’s not designed to run Google.



What google system runs more than 5k tasks on a single cluster?


https://github.com/google/cluster-data/blob/master/README.md...

"ClusterData2011_2 provides data from an 12.5k-machine cell over about a month-long period in May 2011."


10k replicas in a single cell is the default charge-free quota of every individual engineer at that company. It’s basically zero.


Heh, you have no idea. Lots and lots of systems. And 5k wouldn't even register there...


Can't edit my comment anymore but I meant 5k nodes / 150k pods / tasks.


Can you expand on that, please?


I used to work on one of Borg teams at Google and now run Kubernetes platform. Nearly every Kubernetes component (node, master, networking) will melt down at fraction of Borg scale. It's not even close.


thanks for the answer.


https://kubernetes.io/docs/setup/cluster-large/

More specifically, "No more than 5000 nodes" and "No more than 150000 total pods" is fairly limiting to large (Google-large) clusters.


thanks for the answer.




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