title: Is this possible to schedule CronJob to execute on each of Kubernetes nodes?
body: <p>What I would like to do is to run some backup scripts on each of Kubernetes nodes periodically. I want it to run inside Kubernetes cluster in contrast to just adding script to each node's crontab. This is because I will store backup on the volume mounted to the node by Kubernetes. It differs from the configuration but it could be CIFS filesystem mounted by Flex plugin or <code>awsElasticBlockStore</code>.</p>
  
  <p>It would be perfect if <code>CronJob</code> will be able to template <code>DaemonSet</code> (instead of fixing it as <code>jobTemplate</code>) and there will be possibility to set <code>DaemonSet</code> restart policy to <code>OnFailure</code>.</p>
  
  <p>I would like to avoid defining <code>n</code> different <code>CronJobs</code> for each of <code>n</code> nodes and then associate them together by defining <code>nodeSelectors</code> since this will be not so convenient to maintain in environment where nodes count changes dynamically.</p>
  
  <p>What I can see problem was discussed here without any clear conclusion: <a href="https://github.com/kubernetes/kubernetes/issues/36601" rel="noreferrer">https://github.com/kubernetes/kubernetes/issues/36601</a></p>
  
  <p>Maybe do you have any hacks or tricks to achieve this?</p>