问题描述
创建工作的等价物是什么:
kubectl -n my-ns create job --from=cronjob/my-cron-job my-job
使用 javascript kubernetes-client ?
解决方法
不,不幸的是你不能。
请检查我在 old answer 问题中的 Create job from cronjob in kubernetes .yaml file。
简而言之:您可以做到这一点(从 cronjob 创建作业)仅使用 kubectl cli
无需--from=cronjob
即可创建常规作业的方法:
const k8s = require('@kubernetes/client-node');
const kc = new k8s.KubeConfig();
kc.loadFromCluster();
const k8sBatchV1Api = kc.makeApiClient(k8s.BatchV1Api);
//creation of the job
k8sBatchV1Api.createNamespacedJob('dev',{
apiVersion: 'batch/v1',kind: 'Job',metadata: {
...
}
},spec: {
...
}
}
}}).catch(e => console.log(e))
示例取自 How to create a Job and a secret from Kubernetes Javascript Client 中的@Popopame 答案
,在此 comment
的帮助下找到了我的问题的解决方案这就是 javascript kubernetes-client 的样子,在集群内的 pod 中使用(可能需要 rbac 权限,我在 k8s docker-desktop 上运行所以不需要):
const createJobFromCronJob = async (
cronJobNamespace: string,cronJobName: string,jobNamespace: string,jobName: string) => {
// next 4 lines can be initialized somewhere else
const kubeConfig = new k8s.KubeConfig();
kubeConfig.loadFromCluster();
const batchV1Api = kubeConfig.makeApiClient(k8s.BatchV1Api);
const batchV1beta1Api = kubeConfig.makeApiClient(k8s.BatchV1beta1Api);
try {
const cronJob = await batchV1beta1Api.readNamespacedCronJob(cronJobName,cronJobNamespace);
const cronJobSpec = cronJob.body.spec.jobTemplate.spec;
const job = new k8s.V1Job();
const metadata = new k8s.V1ObjectMeta();
job.apiVersion = 'batch/v1';
job.kind = 'Job';
job.spec = cronJobSpec;
metadata.name = jobName;
metadata.annotations = {
'cronjob.kubernetes.io/instantiate': 'manual',};
job.metadata = metadata;
const result = await batchV1Api.createNamespacedJob(jobNamespace,job);
console.log('job created');
} catch (err) {
console.error(`failed to create job: ${err.message}`);
throw err;
}
}