當 Linux Kernel 發生 Panic 時

作為作業系統的提供者，我們幾乎和 Kernel 一起陷入恐慌。這會自動觸發團隊放下手邊的所有工作，立刻投入問題的解決。如果無法快速修復，後果可能十分嚴重。

Rancher is known for its capability to manage Kubernetes clusters, be they on public platforms such as GKE, EKS, AKS or Rancher’s offering, RKE. Additional project concepts, role based access controls, monitoring and logging are there to group and make concrete administrative tasks for each cluster. The idea is taken another step further to provide an app store-like space, Apps, where k8s applications that are readily-made can be added to this space via managing catalogs settings.

In cloud computing, one key feature is to evacuate or migrate running VM instances to other nodes of the same cluster so HW/SW upgrade or maintenance operations (including powering off) can be carried out without service interruption. Those who embrace OpenStack + Nova can have some fine-grained abilities of transitioning virtual machines under various conditions when the computing node is down, when one or more instances are in stopped states or when instances are still running. Details of explanations can be found in the manpage of Nova