onuryaz

ansible-playbook --connection=local 127.0.0.1 playbook.yml

127.0.0.1 ansible_connection=local

Resources

local https://github.com/kubernetes-sigs/kind (or just use minikube if it works for you)
cloud https://cloud.google.com/kubernetes-engine (for PersistentVolume and Ingress, I needed to try the real deal)
practice environment: https://github.com/arush-sal/cka-practice-environment


	Questions are not from any actual exam!!!



	Q: Create a job that calculates pi to 2000 decimal points using the container with the image named perl
	and the following commands issued to the container: ["perl", "-Mbignum=bpi", "-wle", "print bpi(2000)"]
	Once the job has completed, check the logs to and export the result to pi-result.txt.

	Solution:

	## NOTE: when finding file by time, use one of the following flags:
	# ctime : the time a file was changed, in hours. On most systems this timestamp cannot be altered by any user, so it is fairly reliable
	# atime : the time a file was last accessed, in hours. This is also set by the system.
	# mtime : the modified time of a file, in hours. This can be set by any user. So if you are looking for mailcious files, never use this flag.
	# cmin : same as mtime, but in minutes.
	# amin : same as atime, but in minutes.
	# mmin : same as mtime, but in minutes.

	# Find all files in current directory changed more than 8 hours ago (480 minutes)
	find $PWD -mindepth 1 -type f -cmin +480

	oc new-project image-uploader --display-name='Image Uploader Project'
	oc new-app centos/ruby-22-centos7~https://github.com/openshift/ruby-ex.git
	oc new-app --image-stream=php --code=https://github.com/OpenShiftInAction/image-uploader.git --name=app-cli
	oc describe svc/app-cli
	oc expose svc/app-cli
	oc describe route/app-cli
	oc scale dc/app-cli --replicas=2
	oc scale dc/app-cli --replicas=1
	oc get pods --show-all=false
	oc exec app-cli-1-9hsz1 hostname

	version: '2'
	services:
	zookeeper:
	image: wurstmeister/zookeeper
	ports:
	- "2181:2181"
	kafka:
	image: wurstmeister/kafka
	ports:
	- "9092:9092"