Henry Xie 's blog
Sunday, October 11, 2020
Tip: Error Http 504 gateway timeout on ingress controller
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Symptom: We have micro-services behind our ingress controller in our Kubernetes cluster. We are hitting HTTP 504 error in our ingress c...
Friday, October 02, 2020
Tip:Node and Namespace drop down menu missing node names in Grafana
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Symptom: We have Prometheus and Grafana setup running well. Suddenly the node and namespace drop-down list disappeared. No config ch...
Tuesday, September 22, 2020
RMAN-04022: target database mount id % does not match channel's mount id %
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Symptom : When we run rman target / and run "crosscheck archivelog all", we hit an error RMAN-04022: target database mount id *...
Sunday, August 30, 2020
Tip: A few commands to debug Issues with Kubelet
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sudo systemctl status -l kubelet kubectl describe node <name> sudo journalctl -u kubelet | grep ready sudo systemctl restart docker...
Tip: Impersonate users on kubectl
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We can impersonate users with the --as= and the --as-group= flags. kubectl auth can-i create pods --as=me
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