If I am using a load balancer with two Linux VMs, how can you set up a cronjob?

Hi Cooper

In this scenario, it is essential to include the cron job within the Linux VM image. This ensures that the cron job is present upon provisioning the VM. However, if you require a unique and customized cron job for each machine, you should store the cron job files in an external directory. Additionally, create a script that downloads the cron job file and adds the necessary information for each machine.

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Hello @Coooper

Thank you for reaching out to the Microsoft Q&A platform.

If you are using two Azure VMs with an Azure load balancer, you can use a distributed task scheduler to ensure that the cron job runs only once and on the appropriate VM. This will help you avoid any incorrect matches that may occur due to running the cron job on both VMs.

One way to achieve this is by using a distributed task scheduler like Apache Mesos or Kubernetes. These schedulers can help you manage and distribute tasks across multiple VMs, ensuring that the cron job runs only once and on the appropriate VM.

In addition to using a distributed task scheduler, you can also use a process manager like Supervisor to manage the cron job process on each VM. This will help you ensure that the process is running correctly and can be easily restarted if necessary.

Overall, the key to structuring the backend process when using an additional VM with a load balancer is to use a distributed task scheduler and a process manager to manage and distribute tasks across multiple VMs. This will help you ensure that the cron job runs only once and on the appropriate VM, while also providing you with the necessary tools to manage and monitor the process.

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