CronJob をその場で Job を作って実行する方法 ref: https://qiita.com/koudaiii/items/586a8a0e0f763ddf9a05

file0.txt

$ kubectl create job -h
Create a job with the specified name.

Examples:
  # Create a job from a CronJob named "a-cronjob"
  kubectl create job test-job --from=cronjob/a-cronjob

Options:
      --allow-missing-template-keys=true: If true, ignore any errors in templates when a field or map key is missing in
the template. Only applies to golang and jsonpath output formats.
      --dry-run=false: If true, only print the object that would be sent, without sending it.
      --from='': The name of the resource to create a Job from (only cronjob is supported).
  -o, --output='': Output format. One of:
json|yaml|name|go-template-file|templatefile|template|go-template|jsonpath-file|jsonpath.
      --save-config=false: If true, the configuration of current object will be saved in its annotation. Otherwise, the
annotation will be unchanged. This flag is useful when you want to perform kubectl apply on this object in the future.
      --template='': Template string or path to template file to use when -o=go-template, -o=go-template-file. The
template format is golang templates [http://golang.org/pkg/text/template/#pkg-overview].
      --validate=true: If true, use a schema to validate the input before sending it

Usage:
  kubectl create job NAME [--from=CRONJOB] [flags] [options]

Use "kubectl options" for a list of global command-line options (applies to all commands).

file1.txt

      --from='': The name of the resource to create a Job from (only cronjob is supported).

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$ kubectl create job <任意の名前> --from=cronjob/<CronJob の名前> -n <ネームスペース>

file3.txt

$ kubectl create job backup-db-2018-09-06 --from=cronjob/backup-db -n koudaiii