Multi cluster OR wide cluster?

https://github.com/gravitl/netmaker

https://itnext.io/3-reasons-to-choose-a-wide-cluster-over-multi-cluster-with-kubernetes-c923fecf4644

https://www.qovery.com/blog/kubernetes-multi-cluster-why-and-when-to-use-them

## multi cluster
https://www.bmc.com/blogs/kubernetes-multi-clusters/

## kubefed
https://github.com/kubernetes-sigs/kubefed

## discuss
https://www.containiq.com/post/kubernetes-multiple-clusters-vs-single-cluster

https://www.cncf.io/blog/2021/04/12/simplifying-multi-clusters-in-kubernetes/

https://cloud.tencent.com/developer/article/1815860

https://www.youtube.com/watch?v=tHCKGwnmuAA&ab_channel=Liqo

## 重要
https://cloud.tencent.com/developer/article/1815860

https://www.51cto.com/article/714649.html

https://itnext.io/3-reasons-to-choose-a-wide-cluster-over-multi-cluster-with-kubernetes-c923fecf4644

https://www.cncf.io/blog/2021/04/12/simplifying-multi-clusters-in-kubernetes/

## disaster-recovery - DA
https://containerjournal.com/editorial-calendar/best-of-2021/disaster-recovery-for-kubernetes/

https://itw01.com/UZZ9HEG.html
* etcd
* pv