To configure CentOS 8.x, simply modify the sku as shown below. This will install CentOS 8.2 Generation 2 Azure VMs. To know more about Generation 2 VMs on Azure, please visit the doc
CentOS|OpenLogic|8_2-gen2|latest|
Run the Azure CLI command to determine the list of SKU's available for CentOS in a given region
az vm image list-skus -l <region> -f CentOS -p OpenLogic -o table
For illustration, provided a sample output that displays the sku list from westus2 region. The sku name 8_1, 8_2 implicitly refers to Generation 1 Azure VMs.
$ az vm image list-skus -l westus2 -f CentOS -p OpenLogic -o table Location Name -------- ------ westus2 7_8-gen2 westus2 8.0 westus2 8_0-gen2 westus2 8_1 westus2 8_1-gen2 westus2 8_2 westus2 8_2-gen2