Automated way to create multiple kubernetes Job manifests

That would be pretty trivial with yq and a shell script. Assumingyour template is in cronjob.yml, we can write something like this:

let count=0while read url; do  yq -y '    .metadata.name = "some-example-'"$count"'"|    .spec.jobTemplate.spec.template.spec.containers[0].env[0].value = "'"$url"'"  ' cronjob.yml  echo '---'  let count++done < list_of_urls.txt | kubectl apply -f-

E.g., if my list_of_urls.txt contains:

https://google.comhttps://stackoverflow.com

The above script will produce:

[...]metadata:  name: some-example-0  namespace: some-examplespec:  [...]              env:                - name: REPO_URL                  value: https://google.com---[...]metadata:  name: some-example-1  namespace: some-examplespec:  [...]              env:                - name: REPO_URL                  value: https://stackoverflow.com

You can drop the | kubectl apply -f- if you just want to see theoutput instead of actually creating resources.

Or for more structured approach, we could use Ansible's k8smodule:

- hosts: localhost  gather_facts: false  tasks:    - k8s:        state: present        definition:          apiVersion: batch/v1beta1          kind: CronJob          metadata:            name: "some-example-{{ count }}"            namespace: some-example          spec:            schedule: "* 12 * * *"            jobTemplate:              spec:                template:                  spec:                    containers:                    - name: some-example                      image: gcr.io/some-example/some-example                      imagePullPolicy: Always                      env:                       - name: REPO_URL                         value: "{{ item }}"      loop:        - https://google.com        - https://stackoverflow.com      loop_control:        index_var: count

Assuming that the above is stored in playbook.yml, running this withansible-playbook playbook.yml would create the same resources as theearlier shell script.