Pre Setup
Once you’ve gained access to your terminal it might be wise to spend ~1 minute to setup your environment. You could set these:
alias k=kubectl # will already be pre-configured export do="--dry-run=client -o yaml" # k create deploy nginx --image=nginx $do export now="--force --grace-period 0" # k delete pod x $now
Vim
The following settings will already be configured in your real exam environment in ~/.vimrc. But it can never hurt to be able to type these down:
set tabstop=2 set expandtab set shiftwidth=2
Question 1 | Contexts
You have access to multiple clusters from your main terminal through kubectl contexts. Write all those context names into /opt/course/1/contexts.
Next write a command to display the current context into /opt/course/1/context_default_kubectl.sh, the command should use kubectl.
Finally write a second command doing the same thing into /opt/course/1/context_default_no_kubectl.sh, but without the use of kubectl.
Answer:
Maybe the fastest way is just to run:
k config get-contexts # copy manually k config get-contexts -o name > /opt/course/1/contexts
Or using jsonpath:
k config view -o yaml # overview
k config view -o jsonpath="{.contexts[*].name}"
k config view -o jsonpath="{.contexts[*].name}" | tr " " "\n" # new lines
k config view -o jsonpath="{.contexts[*].name}" | tr " " "\n" > /opt/course/1/contexts
The content should then look like:
# /opt/course/1/contexts k8s-c1-H k8s-c2-AC k8s-c3-CCC
Next create the first command:
# /opt/course/1/context_default_kubectl.sh kubectl config current-context
And the second one:
# /opt/course/1/context_default_no_kubectl.sh cat ~/.kube/config | grep current
