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The -o yaml argument states that we want to export the command using the yaml syntax. By adding the -dry-run=client argument, kubectl does not actually run the command against the Kubernetes cluster but validates the command. The solution to this is to create a yaml file by using the imperative command. Now, this would work but one thing that we cannot specify is the name of the container in the pod. We can create the pod using the following command. Name the container in the pod MyPod-container. Sometimes you get a task that you cannot complete using a single imperative command - for example, this question.Ĭreate a pod called MyPod in namespace fire using the nginx:alpine image. Combining imperative and declarative commands
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Take a look at the help of kubectl kubectl create -help to see which objects you can build using the imperative syntax. For example, you cannot create a persistent volume and a persistent volume claim. You can not build all Kubernetes objects via kubectl. k -n fire create cm M圜onfigMap -from-literal=database_host=192.168.16.1 A lot less to type and easier to remember. The difference is that the killer.sh exam got 22 questions, while on the actual exam, I only got 17.Ĭreating a Kubernetes ConfigMap using declarative syntaxĪ quicker way is to build the ConfigMap using imperative syntax. Killer.sh states that their exam is more challenging than the actual exam. Each session consists of 36 hours of access to a Kubernetes cluster, including 22 exam questions.
#WHAT IS KUBERNETES APPLICATION DEVELOPER SIMULATOR#
When you register for the exam at the Linux Foundation, you get two free Killer.sh simulator sessions. I also used these questions in combination with my local Minikube environment. Another set of exercises by Bhargav Bachinaīhargav Bachina created another set of exercises that you can find on Github. You won’t find the new topics from the September refresh, but they are still very relevant. I used these questions in combination with a local Kubernetes installation. Training exercises by Dimitris-Ilias Gkanatsiosĭimitris-Ilias Gkanatsios created several training exercises that you can find on Github. KodeKloud is a virtual training environment that provides hands-on training in Kubernetes. Together with the online training, you get access to KodeKloud. The real value for me was the included practice exams in combination with KodeKloud. It also has a section with the new topics from the September refresh. The course is excellent, and Mumshad explains every topic in great detail. The course I used the most was the Udemy Certified Kubernetes Application Developer course from Mumshad Mannambeth. Udemy Certified Kubernetes Application Developer course You can use paid courses, but there are also a lot of free practice questions. Several online resources help you prepare for the (CKAD) exam.