Prometheus

• kkumtree

2024-09-15T18:40:22+09:00

CloudNet@에서 진행하고 있는 K8s Advanced Network Study(이하, KANS)를 통해 학습한 내용을 정리합니다.

1. Calico 설치

스터디에서 AWS CF 및 Calico 설치 스크립트(Manifest)를 제공하였기에, 이 부분은 참고만 하시기 바랍니다.

CNI가 설치되지 않았기에 NotReady 상태에 있다가, Calico 설치하면 CoreDNS가 설정되며, Ready 상태로 변경된다.

• Calico 설치 전

  # Control Plane and worker nodes are not ready
  (⎈|HomeLab:default) root@k8s-m:~# kubectl get nodes
  NAME     STATUS     ROLES           AGE   VERSION
  k8s-m    NotReady   control-plane   32m   v1.30.5
  k8s-w0   NotReady   <none>          31m   v1.30.5
  k8s-w1   NotReady   <none>          31m   v1.30.5
  k8s-w2   NotReady   <none>          31m   v1.30.5
  
  # Count for iptalbes rules for comparison
  (⎈|HomeLab:default) root@k8s-m:~# iptables -t filter -L | wc -l
  50
  (⎈|HomeLab:default) root@k8s-m:~# iptables -t nat -L | wc -l
  48
  

  (⎈|HomeLab:default) root@k8s-m:~# kubectl get pod -A --sort-by=.metadata.creationTimestamp
  NAMESPACE     NAME                            READY   STATUS    RESTARTS   AGE
  kube-system   etcd-k8s-m                      1/1     Running   0          35m
  kube-system   kube-apiserver-k8s-m            1/1     Running   0          35m
  kube-system   kube-controller-manager-k8s-m   1/1     Running   0          35m
  kube-system   kube-scheduler-k8s-m            1/1     Running   0          35m
  kube-system   coredns-55cb58b774-bscbt        0/1     Pending   0          35m
  kube-system   coredns-55cb58b774-w22zq        0/1     Pending   0          35m
  kube-system   kube-proxy-5hgmn                1/1     Running   0          35m
  kube-system   kube-proxy-bnv77                1/1     Running   0          35m
  kube-system   kube-proxy-xf8q7                1/1     Running   0          35m
  kube-system   kube-proxy-hzsnk                1/1     Running   0          35m
  

• Calico 설치 후