【Kubernetes】EKSで「0/2 nodes are available: 2 Too many pods.」と出て、PodがPendingのまま

kubectl get pod
NAME                                          READY   STATUS    RESTARTS   AGE
argocd-sample-guestbook-ui-5748657565-25vxq   1/1     Running   0          14d
external-dns-7b4f7cbfc8-hs829                 1/1     Running   0          20d
nginx-app1                                    0/1     Pending   0          7m7s
nginx-app2                                    0/1     Pending   0          7m7s
nginx-app3                                    0/1     Pending   0          7m7s

  Type     Reason            Age                 From               Message
  ----     ------            ----                ----               -------
  Warning  FailedScheduling  5s (x6 over 5m48s)  default-scheduler  0/2 nodes are available: 2 Too many pods.

原因は、Podに適用するためのIPアドレスが足りない模様。
なので、増やす。

eksctl scale nodegroup --cluster vamdemic-eks-cluster --nodes=3 --name managed-t3-medium