In this video I explain how to generate random strings in Bicep and demonstrate a couple of deployments.
I use the uniqueString function combined with the utcNow function. But the caveat is that you can only use it as a default value for a parameter, as follows:
param keyVaultName string = 'key-vault-${uniqueString(resourceGroup().id, utcNow())}'
uniqueString() doesn’t really generate a unique string. It is a hash function which generates a 13 character string based on the input you give it. so uniqueString('coffee') will always have the same output.
To generate a truly unique string, you pass in the utcNow() function which generates a UNIX timestamp. However, Bicep does not allow you to use this function everywhere. It may only be used as a default value for a parameter.
Links:
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[[bicep]] [[coding]]