List public IP and fqdn of all Azure instances belonging to a Virtual machine scale set (aka vmss) with easy ssh command to login

az_list_vmss_instances

#! /bin/bash

# List instances of an Azure vmss
#   List public IP and fqdn of all Azure instances belonging to 
#   a Virtual machine scale set (aka vmss) with easy ssh command to login
# Gits at https://gist.github.com/francescor/aaf2bdff5ef57f92799f4e123681af2a

ResourceGroup="myRG"
VmssName="myVMSS"
# adapt with your username
# username=$USER
username="ubuntu"
echo "-----------------------------------------------------------------------------------------"
echo " Azure instances in vmss: $VmssName  ($ResourceGroup)"
echo "-----------------------------------------------------------------------------------------"

# debug with
# az vmss list-instance-public-ips --name $VmssName --resource-group  $ResourceGroup | jq -r '.[] | "\(.ipAddress) \t \(.dnsSettings.fqdn)" '
instances=$(az vmss list-instance-public-ips --name $VmssName --resource-group $ResourceGroup | jq -r '.[] | "\(.ipAddress)|\(.dnsSettings.fqdn)" ')

for item in $instances; do
  # echo $item
  echo $item | awk -v user=$username -F'|' '{print "ssh "user"@"$1   "  # "$2}'
done
echo "-----------------------------------------------------------------------------------------"