Creating a Cluster: Running and Verification
Creating the Cluster
The command that creates a cluster using the specifications we discussed is as follows.
kops create cluster \--name $NAME \--master-count 3 \--node-count 1 \--node-size t2.small \--master-size t2.small \--zones $ZONES \--master-zones $ZONES \--ssh-public-key devops23.pub \--networking kubenet \--kubernetes-version v1.9.1 \--yes
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Line 3: We specified that the cluster should have three masters and one worker node. Remember, we can always increase the number of workers, so there’s no need to start with more than what we need at the moment.
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Line 5-8: The sizes of both worker nodes and masters are set to
t2.small. Both types of nodes will be spread across the three availability zones we specified through the environment variableZONES. -
Line 9-10: We defined the public key and the type of networking as discussed earlier.
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Line 11: We used
--kubernetes-versionto specify that we prefer to run versionv1.9.1. Otherwise, we’d get a cluster with the latest version considered stable by kops. Even though ...