How to manage swap on azure machine

https://docs.microsoft.com/en-us/troubleshoot/azure/virtual-machines/oom-swap-file-linux-vm

Query space

df -h /mnt
xx is amount of GB*1024

How to setup swap:

sudo vim /etc/waagent.conf
ResourceDisk.Format=y
ResourceDisk.EnableSwap=y
ResourceDisk.SwapSizeMB=xx

Example

%> df -h /mnt
Filesystem Size Used Avail Use% Mounted on
/dev/sdb1 3.9G 16M 3.7G 1% /mnt

MB calc:

3.7*1024=3,788.8
ResourceDisk.SwapSizeMB=3770

Post reboot affect:

%> df /mnt
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sdb1 4060864 3876864 0 100% /mnt