问题
I am following this tutorial to configure Kubernetes on GCP. https://cloud.google.com/kubernetes-engine/docs/tutorials/hello-app#clean-up
I run this command to create a cluster following the suggestion from here - GKE: Insufficient regional quota to satisfy request: resource "IN_USE_ADDRESSES"
gcloud container clusters create name-cluster --num-nodes=2
When I list the nodes using gcloud compute instances list I notice that I have got more than 2 nodes!! Why?
NAME LOCATION MASTER_VERSION MASTER_IP MACHINE_TYPE NODE_VERSION NUM_NODES STATUS
name-cluster europe-west4 1.14.10-gke.36 34.91.182.235 n1-standard-1 1.14.10-gke.36 6 <-- why not 2 RUNNING
gcloud compute instances list
gke-name-cluster-default-pool-6eb04e1c-8v7v europe-west4-a n1-standard-1 10.164.0.7 34.91.242.41 RUNNING
gke-name-cluster-default-pool-6eb04e1c-k2c7 europe-west4-a n1-standard-1 10.164.0.8 34.91.149.207 RUNNING
gke-name-cluster-default-pool-aa8d2ab0-9508 europe-west4-b n1-standard-1 10.164.0.11 34.91.209.197 RUNNING
gke-name-cluster-default-pool-aa8d2ab0-vpv2 europe-west4-b n1-standard-1 10.164.0.12 35.204.159.132 RUNNING
gke-name-cluster-default-pool-ae1131d2-9q50 europe-west4-c n1-standard-1 10.164.0.10 34.90.135.116 RUNNING
gke-name-cluster-default-pool-ae1131d2-l29c europe-west4-c n1-standard-1 10.164.0.9 34.91.4.206 RUNNING
回答1:
Argument num-nodes is the number of nodes in the pool in a zonal cluster. If you use multi-zonal or regional clusters, num-nodes is the number of nodes for each zone the node pools is in.
In your case, GKE cluster is deployed in europe-west4 region and it created 2 nodes in each zone(europe-west4-a, europe-west4-b, europe-west4-c).
For more reference resizing cluster
来源：https://stackoverflow.com/questions/62548469/gcp-kubernetes-created-6-nodes-when-num-nodes-was-set-to-2