[CKA] Udemy Lightning Lab (2/7)

Weight: 15 

Print the names of all deployments in the admin2406 namespace in the following format:

DEPLOYMENT   CONTAINER_IMAGE   READY_REPLICAS   NAMESPACE

<deployment name>   <container image used>   <ready replica count>   <Namespace>


. The data should be sorted by the increasing order of the deployment name.


Example:

DEPLOYMENT   CONTAINER_IMAGE   READY_REPLICAS   NAMESPACE
deploy0   nginx:alpine   1   admin2406
Write the result to the file /opt/admin2406_data.

 

 

• 정보 확인

controlplane ~ ➜  k get deploy -n admin2406
NAME      READY   UP-TO-DATE   AVAILABLE   AGE
deploy1   1/1     1            1           15m
deploy2   1/1     1            1           15m
deploy3   1/1     1            1           15m
deploy4   1/1     1            1           15m
deploy5   1/1     1            1           15m

controlplane ~ ✖ k get deploy deploy1 -n admin2406 -o json
{
    "apiVersion": "apps/v1",
    "kind": "Deployment",
    "metadata": {
        "annotations": {
            "deployment.kubernetes.io/revision": "1"
        },
        "creationTimestamp": "2024-07-22T13:34:55Z",
        "generation": 1,
        "labels": {
            "app": "deploy1"
        },
        "name": "deploy1",
        "namespace": "admin2406",
        "resourceVersion": "5100",
        "uid": "c28faff1-bf27-4298-8f3c-f30aa4f15dbb"
    },
    "spec": {
        "progressDeadlineSeconds": 600,
        "replicas": 1,
        "revisionHistoryLimit": 10,
        "selector": {
            "matchLabels": {
                "app": "deploy1"
            }
        },
        "strategy": {
            "rollingUpdate": {
                "maxSurge": "25%",
                "maxUnavailable": "25%"
            },
            "type": "RollingUpdate"
        },
        "template": {
            "metadata": {
                "creationTimestamp": null,
                "labels": {
                    "app": "deploy1"
                }
            },
            "spec": {
                "containers": [
                    {
                        "image": "nginx",
                        "imagePullPolicy": "Always",
                        "name": "nginx",
                        "resources": {},
                        "terminationMessagePath": "/dev/termination-log",
                        "terminationMessagePolicy": "File"
                    }
                ],
                "dnsPolicy": "ClusterFirst",
                "restartPolicy": "Always",
                "schedulerName": "default-scheduler",
                "securityContext": {},
                "terminationGracePeriodSeconds": 30
            }
        }
    },
    "status": {
        "availableReplicas": 1,
        "conditions": [
            {
                "lastTransitionTime": "2024-07-22T13:34:55Z",
                "lastUpdateTime": "2024-07-22T13:34:57Z",
                "message": "ReplicaSet \"deploy1-67b55d4f9f\" has successfully progressed.",
                "reason": "NewReplicaSetAvailable",
                "status": "True",
                "type": "Progressing"
            },
            {
                "lastTransitionTime": "2024-07-22T13:45:13Z",
                "lastUpdateTime": "2024-07-22T13:45:13Z",
                "message": "Deployment has minimum availability.",
                "reason": "MinimumReplicasAvailable",
                "status": "True",
                "type": "Available"
            }
        ],
        "observedGeneration": 1,
        "readyReplicas": 1,
        "replicas": 1,
        "updatedReplicas": 1
    }
}

 

 

kubectl -n admin2406 get deployment -o custom-columns=DEPLOYMENT:.metadata.name,\
CONTAINER_IMAGE:.spec.template.spec.containers[].image,\
READY_REPLICAS:.status.readyReplicas,\
NAMESPACE:.metadata.namespace --sort-by=.metadata.name

DEPLOYMENT   CONTAINER_IMAGE   READY_REPLICAS   NAMESPACE
deploy1      nginx             1                <none>
deploy2      nginx:alpine      1                <none>
deploy3      nginx:1.16        1                <none>
deploy4      nginx:1.17        1                <none>
deploy5      nginx:latest      1                <none>


kubectl -n admin2406 get deployment -o custom-columns=DEPLOYMENT:.metadata.name,\
CONTAINER_IMAGE:.spec.template.spec.containers[].image,\
READY_REPLICAS:.status.readyReplicas,\
NAMESPACE:.metadata.namespace --sort-by=.metadata.name > /opt/admin2406_data

 

 

controlplane ~ ➜  k get deployments.apps -n admin2406 -o custom-columns=DEPLOYMENT:.metadata.name,CONTAINER_IMAGE:.spec.template.spec.containers[*].image,REDY_REPLICAS:.status.readyReplicas,NAMESPACE:.metatdata.namespace --sort-by=.metadata.name
DEPLOYMENT   CONTAINER_IMAGE   REDY_REPLICAS   NAMESPACE
deploy1      nginx             1               <none>
deploy2      nginx:alpine      1               <none>
deploy3      nginx:1.16        1               <none>
deploy4      nginx:1.17        1               <none>
deploy5      nginx:latest      1               <none>

controlplane ~ ➜  kubectl -n admin2406 get deployment -o custom-columns=DEPLOYMENT:.metadata.name,CONTAINER_IMAGE:.spec.template.spec.cont
ainers[].image,READY_REPLICAS:.status.readyReplicas,NAMESPACE:.metadata.namespace --sort-by=.metadata.name 
DEPLOYMENT   CONTAINER_IMAGE   READY_REPLICAS   NAMESPACE
deploy1      nginx             1                admin2406
deploy2      nginx:alpine      1                admin2406
deploy3      nginx:1.16        1                admin2406
deploy4      nginx:1.17        1                admin2406
deploy5      nginx:latest      1                admin2406

controlplane ~ ➜  k get deployments.apps -n admin2406 -o custom-columns=DEPLOYMENT:.metadata.name,CONTAINER_IMAGE:.spec.template.spec.cont
ainers[].image,REDY_REPLICAS:.status.readyReplicas,NAMESPACE:.metatdata.namespace
DEPLOYMENT   CONTAINER_IMAGE   REDY_REPLICAS   NAMESPACE
deploy1      nginx             1               <none>
deploy2      nginx:alpine      1               <none>
deploy3      nginx:1.16        1               <none>
deploy4      nginx:1.17        1               <none>
deploy5      nginx:latest      1               <none>