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How to update kubectl to see a new Kubernetes cluster
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| # This is something that I always forget and had a surprisingly hard time finding (or better yet, understanding). Here's the | |
| # scenario: a colleague creates a new kubernetes cluster, named" cluster-foo.example.com". You want to look at it (for | |
| # troubleshooting, updating the deployment, whatever). To get your kubectl installation to "see" the new cluster, take the | |
| # following steps: | |
| # ASSUMPTION: You have pointed kops to some location where the cluster configurations are stored | |
| # (I have this in my ~/.bash_profile): | |
| export KOPS_STATE_STORE=s3://example-state-store | |
| # Use kops to get the list of clusters | |
| $ kops get clusters | |
| NAME CLOUD ZONES | |
| cluster-alpha.example.com aws us-west-2a | |
| cluster-bravo.example.com aws us-west-2a | |
| cluster-foo.example.com aws us-west-2a | |
| # Export the configuration of the cluster you care about; this will update your ~/.kube/config file, so kubectl knows about it: | |
| $ kops export kubecfg cluster-foo.example.com | |
| Kops has set your kubectl context to awsstaging.sbtds.org | |
| # Now you should see the cluster-foo.example.com in your list of kubectl contexts: | |
| $ kubectl config get-contexts | |
| CURRENT NAME CLUSTER AUTHINFO NAMESPACE | |
| cluster-alpha.example.com cluster-alpha.example.com cluster-alpha.example.com | |
| cluster-bravo.example.com cluster-bravo.example.com cluster-bravo.example.com | |
| * cluster-foo.example.com cluster-foo.example.com cluster-foo.example.com |
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