CODEWITHSUNDEEP
amazon-web-serviceskubernetes
Erez Rabih
Erez Rabih

Reputation: 15788

Updating Kubernetes 1.2 to 1.3 on AWS

What's the suggested way to update the cluster version from 1.2 to 1.3?

Is there a structured way to do it or I have to create a new cluster from scratch?

Couldn't find any documentation regarding this.

Upvotes: 1

Views: 161

Answers (1)

Robert Bailey
Robert Bailey

Reputation: 18200

The answer partially depends on how you set up your cluster in the first place. If you used the kube-up.sh script with the environment set to AWS, then they don't currently provide an upgrade mechanism. If you used kops then you can use the built in upgrade command.

The reason that I said "partially" above is that many Kubernetes users have found it easier to lift and shift rather than upgrade in place when they are running on cloud infrastructure. The idea is that cluster deployment is a more well tested code path than cluster upgrades (especially on AWS). So you'd deploy a second cluster, re-provision your applications and services, shift your traffic from your existing cluster to your new cluster, and then delete your old cluster.

Once you have this strategy working, you can do it to shift to any desired cluster software version (upgrade or downgrade), and depending on the mechanism you use to shift traffic, you can also move across zones, regions, or even cloud providers.

Upvotes: 2

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