Joe Blog
虽然目前还没有像标题所示的kubectl inspect command，但kubectl现在有一个新重新设计的插件系统，它允许您轻松创建自己的检查命令并让它做任何你想做的事情
正如您所看到的，我的kubectl inspect插件使您能够快速显示Kubernetes资源的YAML - 语法高亮！
我知道人们讨厌YAML，但我更喜欢通过使用像kubectl describe这样的东西来查看它的原始YAML来检查资源。使用语法高亮显示，阅读YAML非常简单。
我最近从cat（meow）升级到bat（squeek）用于打印文件，但是让它使我的资源用颜色闪耀需要太多的击键。例如：
$ kubectl get pod mypod -o yaml | bat -l yaml -p
这是要输入的许多额外字符，但它值得，因为它带来了这个颜色漂亮的YAML：
使用该命令一段时间后，我有一个想法，并意识到我可以创建一个新的kubectl插件，允许我只需键入：
$ kubectl inspect pod mypod
我花了不到30秒的时间来创建插件。所需要的只是在我的PATH中添加一个名为kubectl-inspect的文件，其中包含以下内容：
kubectl-inspect
#!/bin/bash
kubectl get "$@" -o yaml --export | bat -l yaml -p
PS：新的kubectl插件系统可从v1.12.0-beta.1开始提供。 使用插件扩展 kubectl
root@k8s-master-1:~/.kube# mkdir -p plugins
root@k8s-master-1:~/.kube/plugins# tree
.
└── inspect
└── plugin.yaml
1 directory, 1 file
root@k8s-master-1:~/.kube/plugins# cat inspect/plugin.yaml
name: "inspect"
shortDesc: "Inspect Yaml Highlighting"
longDesc: "Inspect Kubernetes Resource's YAML Highlighting"
example: "kubectl inspect pod [PODNAME] -n [NAMESPACE]"
command: "kubectl-inspect"
#add kube-inspect to PATH
root@k8s-master-1:~/.kube/plugins# ls /usr/local/bin/
helm istioctl kubectl-inspect kube-prompt
##show plugins list
root@k8s-master-1:~# kubectl plugin list
The following kubectl-compatible plugins are available:
/usr/local/bin/kubectl-inspect
root@k8s-master-1:~# kubectl get pod
NAME READY STATUS RESTARTS AGE
myapp-8696457765-668bn 1/1 Running 3 30d
myapp-8696457765-f87qm 1/1 Running 3 30d
myapp-8696457765-jzqwm 1/1 Running 1 15d
myapp-8696457765-x2xz7 1/1 Running 3 30d
myapp-8696457765-x72sg 1/1 Running 3 30d
root@k8s-master-1:~# kubectl inspect pod myapp-8696457765-668bn -n default
apiVersion: v1
kind: Pod
metadata:
creationTimestamp: null
generateName: myapp-8696457765-
labels:
app: myapp
pod-template-hash: "8696457765"
ownerReferences:
- apiVersion: apps/v1
blockOwnerDeletion: true
controller: true
kind: ReplicaSet
name: myapp-8696457765
uid: d96e9ab7-409f-11e9-b31a-000c2954713e
selfLink: /api/v1/namespaces/default/pods/myapp-8696457765-668bn
spec:
containers:
- image: 314315960/zero-downtime-tutorial:green
imagePullPolicy: IfNotPresent
lifecycle:
preStop:
exec:
command:
- /bin/sh
- -c
- rm /usr/share/nginx/html/healthy.html && sleep 10
name: nginx
ports:
- containerPort: 80
protocol: TCP
readinessProbe:
failureThreshold: 2
httpGet:
path: /healthy.html
port: 80
scheme: HTTP
periodSeconds: 1
successThreshold: 1
timeoutSeconds: 1
resources: {}
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
volumeMounts:
- mountPath: /var/run/secrets/kubernetes.io/serviceaccount
name: default-token-b46m8
readOnly: true
dnsPolicy: ClusterFirst
enableServiceLinks: true
nodeName: 192.168.2.11
restartPolicy: Always
schedulerName: default-scheduler
securityContext: {}
serviceAccount: default
serviceAccountName: default
terminationGracePeriodSeconds: 10
volumes:
- name: default-token-b46m8
secret:
defaultMode: 420
secretName: default-token-b46m8
status:
phase: Pending
qosClass: BestEffort