CKA

Kube Controller Manager

백셀건전지 2021. 8. 30. 17:12
  • manages various manager in K8S
  • process that continuously monitors the state of various components within the system
  • works towards bringing the whole system to the desired functioning state
  • Node-Controller는 주기적으로 node체크하여 문제 있으면 Kube-API 통해서 Node 정상화시킴
    • Node Monitor Period : 5s
    • Node Monitor Grace Period : 40s
    • Pod Eviction Timout : 5m
  • 여러 components 의 controller들은 하나의 Kube-Controller-Manager로 묶임.
  • kube-system ns의 kube-controller-manager Pod 안에서 config file을 찾을 수 있다.
    • /etc/kubernetes/manifests/kube-controller-manager.yaml
    • Master node의 실행중 process 확인 : ps -aux | grep kube-controller-manager