To check the status of objects in a namespace use the following command:
$ kubectl --namespace <namespace> get nodes,pod,service,secret,pv,pvc,ingress -o wide
For example:
$ kubectl --namespace oudsmns get nodes,pod,service,secret,pv,pvc,ingress -o wide
The output will look similar to the following:
$ kubectl --namespace oudsmns get pod,service,secret,pv,pvc,ingress -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
pod/oudsm-1 1/1 Running 0 18m 10.244.1.89 <worker-node> <none> <none>
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE SELECTOR
service/oudsm-1 ClusterIP 10.101.79.110 <none> 7001/TCP,7002/TCP 18m app.kubernetes.io/instance=oudsm,app.kubernetes.io/name=oudsm,oudsm/instance=oudsm-1
service/oudsm-lbr ClusterIP 10.106.241.204 <none> 7001/TCP,7002/TCP 18m app.kubernetes.io/instance=oudsm,app.kubernetes.io/name=oudsm
NAME TYPE DATA AGE
secret/default-token-jtwn2 kubernetes.io/service-account-token 3 22h
secret/orclcred kubernetes.io/dockerconfigjson 1 22h
secret/oudsm-creds opaque 2 18m
secret/oudsm-tls-cert kubernetes.io/tls 2 18m
secret/oudsm-token-7kjff kubernetes.io/service-account-token 3 18m
secret/sh.helm.release.v1.oudsm.v1 helm.sh/release.v1 1 18m
NAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM STORAGECLASS REASON AGE VOLUMEMODE
persistentvolume/oudsm-pv 20Gi RWX Delete Bound oudsmns/oudsm-pvc manual 18m Filesystem
NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE VOLUMEMODE
persistentvolumeclaim/oudsm-pvc Bound oudsm-pv 20Gi RWX manual 18m Filesystem
NAME CLASS HOSTS ADDRESS PORTS AGE
ingress.networking.k8s.io/oudsm-ingress-nginx <none> oudsm-1,oudsm 80, 443 18m
Include/exclude elements (nodes,pod,service,secret,pv,pvc,ingress) as required.
To view logs for a pod use the following command:
$ kubectl logs <pod> -n <namespace>
For example:
$ kubectl logs oudsm-1 -n oudsmns
Details about a pod can be viewed using the kubectl describe command:
$ kubectl describe pod <pod> -n <namespace>
For example:
$ kubectl describe pod oudsm-1 -n oudsmns
The output will look similar to the following:
Name: oudsm-1
Namespace: oudsmns
Priority: 0
Node: <worker-node>/100.102.48.28
Start Time: <DATE>
Labels: app.kubernetes.io/instance=oudsm
app.kubernetes.io/managed-by=Helm
app.kubernetes.io/name=oudsm
app.kubernetes.io/version=12.2.1.4.0
helm.sh/chart=oudsm-0.1
oudsm/instance=oudsm-1
Annotations: meta.helm.sh/release-name: oudsm
meta.helm.sh/release-namespace: oudsmns
Status: Running
IP: 10.244.1.89
IPs:
IP: 10.244.1.89
Containers:
oudsm:
Container ID: cri-o://37dbe00257095adc0a424b8841db40b70bbb65645451e0bc53718a0fd7ce22e4
Image: container-registry.oracle.com/middleware/oudsm_cpu:12.2.1.4-jdk8-ol8-<January'24>
Image ID: container-registry.oracle.com/middleware/oudsm_cpu@sha256:47960d36d502d699bfd8f9b1be4c9216e302db95317c288f335f9c8a32974f2c
Ports: 7001/TCP, 7002/TCP
Host Ports: 0/TCP, 0/TCP
State: Running
Started: <DATE>
Ready: True
Restart Count: 0
Liveness: http-get http://:7001/oudsm delay=1200s timeout=15s period=60s #success=1 #failure=3
Readiness: http-get http://:7001/oudsm delay=900s timeout=15s period=30s #success=1 #failure=3
Environment:
DOMAIN_NAME: oudsmdomain-1
ADMIN_USER: <set to the key 'adminUser' in secret 'oudsm-creds'> Optional: false
ADMIN_PASS: <set to the key 'adminPass' in secret 'oudsm-creds'> Optional: false
ADMIN_PORT: 7001
ADMIN_SSL_PORT: 7002
WLS_PLUGIN_ENABLED: true
Mounts:
/u01/oracle/user_projects from oudsm-pv (rw)
/var/run/secrets/kubernetes.io/serviceaccount from kube-api-access-9ht84 (ro)
Conditions:
Type Status
Initialized True
Ready True
ContainersReady True
PodScheduled True
Volumes:
oudsm-pv:
Type: PersistentVolumeClaim (a reference to a PersistentVolumeClaim in the same namespace)
ClaimName: oudsm-pvc
ReadOnly: false
kube-api-access-9ht84:
Type: Projected (a volume that contains injected data from multiple sources)
TokenExpirationSeconds: 3607
ConfigMapName: kube-root-ca.crt
ConfigMapOptional: <nil>
DownwardAPI: true
QoS Class: BestEffort
Node-Selectors: <none>
Tolerations: node.kubernetes.io/not-ready:NoExecute op=Exists for 300s
node.kubernetes.io/unreachable:NoExecute op=Exists for 300s
Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Warning FailedScheduling 39m default-scheduler 0/3 nodes are available: 3 pod has unbound immediate PersistentVolumeClaims.
Normal Scheduled 39m default-scheduler Successfully assigned oudsmns/oudsm-1 to <worker-node>
Normal Pulled 39m kubelet Container image "container-registry.oracle.com/middleware/oudsm_cpu:12.2.1.4-jdk8-ol8-<January'24>" already present on machine
Normal Created 39m kubelet Created container oudsm
Normal Started 39m kubelet Started container oudsm