YAML 基础
它的基本语法规则如下:
- 大小写敏感
- 使用缩进表示层级关系
- 缩进时不允许使用Tab键,只允许使用空格。
- 缩进的空格数目不重要,只要相同层级的元素左侧对齐即可
#
表示注释,从这个字符一直到行尾,都会被解析器忽略。
在我们的 kubernetes 中,你只需要两种结构类型就行了:
- Lists
- Maps
也就是说,你可能会遇到 Lists 的 Maps 和 Maps 的 Lists,等等。不过不用担心,你只要掌握了这两种结构也就可以了,其他更加复杂的我们暂不讨论。
- 基本格式
- 细化说明
- 查看api版本
[root@k8s-master1 ~]# kubectl api-versions admissionregistration.k8s.io/v1 admissionregistration.k8s.io/v1beta1 apiextensions.k8s.io/v1 apiextensions.k8s.io/v1beta1 apiregistration.k8s.io/v1 apiregistration.k8s.io/v1beta1 apps/v1 authentication.k8s.io/v1 authentication.k8s.io/v1beta1 authorization.k8s.io/v1 authorization.k8s.io/v1beta1 autoscaling/v1 autoscaling/v2beta1 autoscaling/v2beta2 batch/v1 batch/v1beta1 certificates.k8s.io/v1beta1 coordination.k8s.io/v1 coordination.k8s.io/v1beta1 discovery.k8s.io/v1beta1 events.k8s.io/v1beta1 extensions/v1beta1 networking.k8s.io/v1 networking.k8s.io/v1beta1 node.k8s.io/v1beta1 policy/v1beta1 rbac.authorization.k8s.io/v1 rbac.authorization.k8s.io/v1beta1 scheduling.k8s.io/v1 scheduling.k8s.io/v1beta1 storage.k8s.io/v1 storage.k8s.io/v1beta1 v1
查看控制器
https://kubernetes.io/docs/concepts/workloads/controllers/deployment/
快速生成ymal文件
- 用run命令生成,生成的同时也创建了。(不建议)
[root@k8s-master1 ~]# kubectl create deployment nginx --image=nginx -o yaml -- dry-run apiVersion: apps/v1 kind: Deployment metadata: creationTimestamp: "2020-09-21T06:55:46Z" generation: 1 labels: app: nginx managedFields: - apiVersion: apps/v1 fieldsType: FieldsV1 fieldsV1: f:metadata: f:labels: .: {} f:app: {} f:spec: f:progressDeadlineSeconds: {} f:replicas: {} f:revisionHistoryLimit: {} f:selector: f:matchLabels: .: {} f:app: {} f:strategy: f:rollingUpdate: .: {} f:maxSurge: {} f:maxUnavailable: {} f:type: {} f:template: f:metadata: f:labels: .: {} f:app: {} f:spec: f:containers: k:{"name":"nginx"}: .: {} f:image: {} f:imagePullPolicy: {} f:name: {} f:resources: {} f:terminationMessagePath: {} f:terminationMessagePolicy: {} f:dnsPolicy: {} f:restartPolicy: {} f:schedulerName: {} f:securityContext: {} f:terminationGracePeriodSeconds: {} manager: kubectl operation: Update time: "2020-09-21T06:55:46Z" name: nginx namespace: default resourceVersion: "1469996" selfLink: /apis/apps/v1/namespaces/default/deployments/nginx uid: 6a8b7042-10d3-4f9c-b124-705c7014f50f spec: progressDeadlineSeconds: 600 replicas: 1 revisionHistoryLimit: 10 selector: matchLabels: app: nginx strategy: rollingUpdate: maxSurge: 25% maxUnavailable: 25% type: RollingUpdate template: metadata: creationTimestamp: null labels: app: nginx 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: {}
- 导出文件到本地
[root@k8s-master1 ~]# kubectl create deployment 1 --image=nginx -o yaml -- dry-run > deployment.yaml
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