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Monitor free space for each partition on Azure Linux VMs

Recently I needed to monitor the free disk space on some Linux VMs on Azure. Each VM had a different VM size, which means different OS Disk size, Temp partition size, etc. In addition, some VMs had an extra Data disk, while some others did not. The aim was to monitor and create alerts for each partition separately. This is something that Azure does not offer out of the box. Instead, it requires some extra effort to achieve this. Since I realized that there is actually not good enough documentation on the net, I decided to share my experience hoping that it will be helpful for others too.

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