tarbots: KUBERNTES: K8S: Kubectl Command To View CoreDNS Pod Configuration

Below is Kubectl Command To View CoreDNS Pod Configuration - Memory, CPU, IP, State

kubectl describe pod coredns -n kube-system

Below is sample output.

$ kubectl describe pod coredns -n kube-system

Name: coredns-f87d5877b-9xwqp

Namespace: kube-system

Priority: 2000000000

Priority Class Name: system-cluster-critical

Service Account: coredns

Node: cne1-ha-control1/10.0.1.66

Start Time: Fri, 13 Oct 2023 04:08:27 +0000

Labels: k8s-app=kube-dns

pod-template-hash=f87d5877b

Annotations: <none>

Status: Running

IP: 10.244.0.2

IPs:

IP: 10.244.0.2

Controlled By: ReplicaSet/coredns-f87d5877b

Containers:

coredns:

Container ID: cri-o://1ed580cf5e2cc178a47590954269e6b4eaaf56488a7ea36e78c80de4cc24b7b3

Image: container-registry.oracle.com/olcne/coredns:v1.9.3

Image ID: container-registry.oracle.com/olcne/coredns@sha256:1736d5ffa6fc5b0b0946411acf0e9059a63b134f95743d8dd874de724fb1d8bb

Ports: 53/UDP, 53/TCP, 9153/TCP

Host Ports: 0/UDP, 0/TCP, 0/TCP

Args:

-conf

/etc/coredns/Corefile

State: Running

Started: Wed, 18 Oct 2023 18:46:40 +0000

Ready: True

Restart Count: 3

Limits:

memory: 170Mi

Requests:

cpu: 100m

memory: 70Mi

Liveness: http-get http://:8080/health delay=60s timeout=5s period=10s #success=1 #failure=5

Readiness: http-get http://:8181/ready delay=0s timeout=1s period=10s #success=1 #failure=3

Environment: <none>

Mounts:

/etc/coredns from config-volume (ro)

/var/run/secrets/kubernetes.io/serviceaccount from kube-api-access-v4rbv (ro)

Conditions:

Type Status

Initialized True

Ready True

ContainersReady True

PodScheduled True

Volumes:

config-volume:

Type: ConfigMap (a volume populated by a ConfigMap)

Name: coredns

Optional: false

kube-api-access-v4rbv:

Type: Projected (a volume that contains injected data from multiple sources)

TokenExpirationSeconds: 3607

ConfigMapName: kube-root-ca.crt

ConfigMapOptional: <nil>

DownwardAPI: true

QoS Class: Burstable

Node-Selectors: kubernetes.io/os=linux

Tolerations: CriticalAddonsOnly op=Exists

node-role.kubernetes.io/control-plane:NoSchedule

node-role.kubernetes.io/master:NoSchedule

node.kubernetes.io/not-ready:NoExecute op=Exists for 300s

node.kubernetes.io/unreachable:NoExecute op=Exists for 300s

Events: <none>

Name: coredns-f87d5877b-l24w4