seulseul

Cluster Maintenance 1) OS Upgrades 2) Cluster Upgrade Process 3) Backup and Restore Methods 01. Let us explore the environment first. How many nodes do you see in the cluster? Including the controlplane and worker nodes. ask : 2 root@controlplane:~# kubectl get nodes NAME STATUS ROLES AGE VERSION controlplane Ready control-plane,master 16m v1.20.0 node01 Ready 16m v1.20.0 02. How many applicatio..

Application Lifecycle Management 1) Rolling Updates and Rollbacks 2) Commands and Arguments 3) Env Variables 4) Secrets 5) Multi Container PODs 6) Init Containers 01. Identify the pod that has an initContainer configured. ask : blue Run the command kubectl describe pod blue It has an InitContainer called init-myservice controlplane ~ ✖ kubectl describe pod blue Name: blue Namespace: default Prio..

Application Lifecycle Management 1) Rolling Updates and Rollbacks 2) Commands and Arguments 3) Env Variables 4) Secrets 5) Multi Container PODs 6) Init Containers 01. Identify the number of containers created in the red pod. ask : 3 root@controlplane:~# kubectl get pod -o wide NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES app 1/1 Running 0 2m31s 10.244.0.6 controlplane fl..

Application Lifecycle Management 1) Rolling Updates and Rollbacks 2) Commands and Arguments 3) Env Variables 4) Secrets 5) Multi Container PODs 6) Init Containers 1. How many Secrets exist on the system? in the current(default) namespace ask : 1 controlplane ~ ➜ kubectl get secrets NAME TYPE DATA AGE default-token-f8d9m kubernetes.io/service-account-token 3 14m 2. How many secrets are defined in..

APPLICATION LIFECYCLE MANAGEMENT, PRACTICE TEST ENV VARIABLES Application Lifecycle Management 1) Rolling Updates and Rollbacks 2) Commands and Arguments 3) Env Variables 4) Secrets 5) Multi Container PODs 6) Init Containers 1. How many PODs exist on the system? in the current(default) namespace ask : 1 controlplane ~ ➜ kubectl get pod NAME READY STATUS RESTARTS AGE webapp-color 1/1 Running 0 24..

LABS – CERTIFIED KUBERNETES ADMINISTRATOR WITH PRACTICE TESTS > APPLICATION LIFECYCLE MANAGEMENT > COMMANDS AND ARGUMENTS Application Lifecycle Management 1) Rolling Updates and Rollbacks 2) Commands and Arguments 3) Env Variables 4) Secrets 5) Multi Container PODs 6) Init Containers 1. How many PODs exist on the system? in the current(default) namespace controlplane ~ ➜ kubectl get pod NAME REA..

LABS – CERTIFIED KUBERNETES ADMINISTRATOR WITH PRACTICE TESTS > APPLICATION LIFECYCLE MANAGEMENT Application Lifecycle Management 1) Rolling Updates and Rollbacks 2) Commands and Arguments 3) Env Variables 4) Secrets 5) Multi Container PODs 6) Init Containers 01. We have deployed a simple web application. Inspect the PODs and the Services Wait for the application to fully deploy and view the app..

LABS – CERTIFIED KUBERNETES ADMINISTRATOR WITH PRACTICE TESTS > LOGGING & MONITORING, PRACTICE TEST Managing Application Logs Logging & Monitoring 01. Monitor Cluster Components 02. Managing Application Logs 01. We have deployed a POD hosting an application. Inspect it. Wait for it to start. 02. A user - USER5 - has expressed concerns accessing the application. Identify the cause of the issue. I..

LABS – CERTIFIED KUBERNETES ADMINISTRATOR WITH PRACTICE TESTS > LOGGING & MONITORING, PRACTICE TEST MONITOR CLUSTER COMPONENTS Logging & Monitoring 01. Monitor Cluster Components 02. Managing Application Logs 01. We have deployed a few PODs running workloads. Inspect them. Wait for the pods to be ready before proceeding to the next question. - Ok 02. Let us deploy metrics-server to monitor the P..

LABS – CERTIFIED KUBERNETES ADMINISTRATOR WITH PRACTICE TESTS > SCHEDULING – Multiple Schedulers Scheduling 01. Manual Scheduling 02. Labels and Selectors 03. Taints and Tolerations 04. Node Affinity 05. Resource Limits 06. DaemonSets 07. Static PODs 08. Multiple Schedulers 01. What is the name of the POD that deploys the default kubernetes scheduler in this environment? 정답 : kube-scheduler-cont..