HOWTO - create multiple clusters in a VPC

[pahud]

這個範例示範如何在寧夏regon同一個VPC裡面創建兩個kops集群，並且指定不同的cluster_name

cluster name

1st cluster: cluster1.zhy.k8s.local 2nd cluster: cluster2.zhy.k8s.local (注意，必須k8s.local結尾)

subnets

在一個VPC裡面準備六個subnet如下，在這個範例我們每個cluster將會用其中三個subnets

Makefiles

準備兩個Makefile分別是cluster1.mk and cluster2.mk 內容範例：

https://github.com/nwcdlabs/kops-cn/blob/master/samples/multi-clusters-in-shared-vpc/cluster1.mk https://github.com/nwcdlabs/kops-cn/blob/master/samples/multi-clusters-in-shared-vpc/cluster2.mk

創建第一個cluster

create cluster

AWS_PROFILE=cn CUSTOM_CLUSTER_NAME=cluster1.zhy.k8s.local \
make -f cluster1.mk create-cluster

edit cluster

AWS_PROFILE=cn CUSTOM_CLUSTER_NAME=cluster1.zhy.k8s.local \
make -f cluster1.mk edit-cluster

將spec.yml內容貼進去

update cluster

AWS_PROFILE=cn CUSTOM_CLUSTER_NAME=cluster1.zhy.k8s.local \
make -f cluster1.mk update-cluster

validate cluster

切換context到cluster1

$ kubectl config use-context cluster1.zhy.k8s.local

validate cluster1

$ AWS_PROFILE=cn CUSTOM_CLUSTER_NAME=cluster1.zhy.k8s.local \
make -f cluster1.mk validate-cluster

創建第二個cluster

create cluster

AWS_PROFILE=cn CUSTOM_CLUSTER_NAME=cluster2.zhy.k8s.local \
make -f cluster2.mk create-cluster

edit cluster

AWS_PROFILE=cn CUSTOM_CLUSTER_NAME=cluster2.zhy.k8s.local \
make -f cluster2.mk edit-cluster

將spec.yml內容貼進去

update cluster

AWS_PROFILE=cn CUSTOM_CLUSTER_NAME=cluster2.zhy.k8s.local \
make -f cluster2.mk update-cluster

validate cluster

切換context到cluster2

$ kubectl config use-context cluster2.zhy.k8s.local

validate cluster2

$ AWS_PROFILE=cn CUSTOM_CLUSTER_NAME=cluster2.zhy.k8s.local \
make -f cluster2.mk validate-cluster

get po

兩個cluster都可以列出所有kube-system內的Pod，全部都正常Running