Provision K8s Cluster On OCI

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There are some useful documents listed as below:

• Terraform with Oracle cloud: https://docs.oracle.com/en-us/iaas/developer-tutorials/tutorials/tf-simple-infrastructure/01-summary.htm
• K8s on Oracle cloud: https://www.oracle.com/a/ocom/docs/kubernetes-on-oci.pdf
• Manual deploy K8s: https://github.com/prabhatsharma/kubernetes-the-hard-way-aws | https://computingforgeeks.com/deploy-kubernetes-cluster-on-ubuntu-with-kubeadm/
• Kubelet troubleshoot: https://github.com/kelseyhightower/kubernetes-the-hard-way/issues/613
• Api Server troubleshoot: https://github.com/kelseyhightower/kubernetes-the-hard-way/issues/630
• Keep container running: https://itrate.co/blog/how-to-keep-docker-containers-running
• Run kubectl on all pods: https://newbedev.com/running-a-command-on-all-kubernetes-pods-of-a-service
• Kill process: https://askubuntu.com/questions/760446/how-can-i-kill-a-process-with-a-phrase-in-its-name
• Floating calculation in Bash: https://fabianlee.org/2020/01/04/bash-performing-floating-arithmetic-using-bc/
• Kill Python using Ansible: https://stackoverflow.com/questions/63737578/how-to-stop-a-running-python-script-by-ansible
• Run app in background: https://stackoverflow.com/questions/41676607/ansible-terminates-my-app-with-nohup
• Parallel-ssh document: http://manpages.ubuntu.com/manpages/bionic/man1/parallel-ssh.1.html