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# KOPS Validate Cluster Success

kops validate cluster

[root@ip-172-31-41-51 ec2-user]# kops validate cluster
Using cluster from kubectl context: k8s-gitlab.k8s.local

Validating cluster k8s-gitlab.k8s.local

INSTANCE GROUPS

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# KOPS Validate Cluster Error

kops validate cluster

------------------------------------

# Result

[root@ec2-user]# kops validate cluster
Using cluster from kubectl context: k8s-gitlab.k8s.local

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# Apply KOPS Configuration and Deploy your Cluster

kops update cluster ${NAME} --yes

I0408 11:40:22.496308   26686 apply_cluster.go:556] Gossip DNS: skipping DNS validation
I0408 11:40:22.868197   26686 executor.go:103] Tasks: 0 done / 96 total; 44 can run
I0408 11:40:24.467352   26686 vfs_castore.go:729] Issuing new certificate: "apiserver-aggregator-ca"
I0408 11:40:24.603492   26686 vfs_castore.go:729] Issuing new certificate: "etcd-manager-ca-events"
I0408 11:40:24.722944   26686 vfs_castore.go:729] Issuing new certificate: "ca"
I0408 11:40:25.039968   26686 vfs_castore.go:729] Issuing new certificate: "etcd-manager-ca-main"

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# Get KOPS Configuration

kops get ig --name ${NAME}

-------------------------------

# Result 

[root@ip-172-31-41-51 ec2-user]# kops get ig --name ${NAME}
NAME					      ROLE	   MACHINETYPE	MIN	MAX	ZONES

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# Edit KOPS Worker Nodes Configuration

kops edit ig nodes --name ${NAME}

---------------------------------------------

# Result

apiVersion: kops.k8s.io/v1alpha2
kind: InstanceGroup

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# Edit KOPS Master Node Configuration

kops edit cluster ${NAME}

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# Generate a ssh key for KOPS

ssh-keygen -b 2048 -t rsa -f ~/.ssh/id_rsa

kops create secret --name ${NAME} sshpublickey admin -i ~/.ssh/id_rsa.pub

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# Create KOPS Cluster Configuration

kops create cluster --zones us-east-1a,us-east-1b,us-east-1c ${NAME}

------------------------------------------------------------------------------

# Result

[root@ec2-user] kops create cluster --zones us-east-1a,us-east-1b,us-east-1c ${NAME}
I0408 11:25:53.884925   26564 create_cluster.go:562] Inferred --cloud=aws from zone "us-east-1a"

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# Set Environment Variables for KOPS

export NAME=YourClusterName.k8s.local

export KOPS_STATE_STORE=s3://YourS3BucketName

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#Install KOPS

curl -Lo kops https://github.com/kubernetes/kops/releases/download/$(curl -s https://api.github.com/repos/kubernetes/kops/releases/latest | grep tag_name | cut -d '"' -f 4)/kops-linux-amd64

chmod +x ./kops

sudo mv ./kops /usr/local/bin/