Henry Xie 's blog
Wednesday, November 27, 2019
Error: You must be logged in to the server (Unauthorized)
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Symptom: When users try to list pod of OKE (oracle kubernete engine) via kubectl get po. It error out as below error: You must be log...
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Saturday, November 09, 2019
Tip: RBAC Comparison Oracle DB vs Kubernetes
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This is for Oracle DBA to better understand how Kubernetes RBAC works. They both have similar RBAC concepts ...
How to Segregate Applications in Kubernetes Cluster without Compromise Cluster-Admin Role
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Requirement: In enterprise world, we often have a few applications running on same Kubernete cluster. Each application owners would lik...
Wednesday, October 23, 2019
Example of OKE ClusterRolebinding for User OCID of Oracle Cloud
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Commands: $ kubectl create rolebinding hxie- rolebinding --role=livesql-apps -- user =ocid1. user .oc1..aaaaa...tx5a $ kubectl create ...
Sunday, September 29, 2019
Tip: NC to test Kubernetes DNS Port
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Kube-DNS listens on port 53 UDP UDP port 53: nc -vzu 10.96.5.5 53 TCP port: 53: nc -vz 10.96.5.5 53
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