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routeserver_2hubs.azcli
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routeserver_2hubs.azcli
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##########################################
#
# AzCLI commands to play around with ARS
#
##########################################
# Control
ars_hub_b2b=yes # Whether enabling b2b in the hub ARS
hub_no=2 # 1 or 2 regions
nva_no=2 # 1 or 2 NVAs per region
nva_type=linux1nic # Only linux supported (linux1nic | linux2nic), CSR To Do
create_azfw=no # Whether an AzFW is created in the hub
flowlogs2logws=yes # Whether Flow Logs are sent to an LA workspace too
stress_test_routes=no # Whether running a stress test on the number of routes by creating many VNets peered to the hub
next_hop=lb # Either 'azfw', 'lb' or 'nva'. If 'lb', it sets the advertised next hop to ARS as the internal LB private IP
use_vxlan=no # Whether using VXLAN encap between the NVAs in different hubs
create_onprem=yes # Whether onprem will be simulated with an additional network
onprem_vpn=yes # Whether onprem will be connected via S2S VPN + BGP
onprem_er=no # Whether onprem will be connected via ExpressRoute (not implemented yet)
# Variables
rg=routeserver
hub1_vnet_name=hub1
hub1_location=northeurope
hub1_vnet_prefix=10.1.0.0/20
hub1_rs_subnet_name=RouteServerSubnet
hub1_rs_subnet_prefix=10.1.0.0/24
hub1_rs_name=hub1rs
hub1_nva_subnet_name=nva1ary
hub1_nva_subnet_prefix=10.1.1.0/24
hub1_nva_subnet2_name=nva2ary
hub1_nva_subnet2_prefix=10.1.11.0/24
hub1_nva_overlay_ip=10.251.0.1
hub1_nva_asn=65001
hub1_vm_subnet_name=vm
hub1_vm_subnet_prefix=10.1.2.0/24
hub1_gw_subnet_prefix=10.1.3.0/24
hub1_azfw_subnet_prefix=10.1.15.0/24
hub1_spoke_summary=10.1.0.0/16
spoke11_vnet_name=spoke11
spoke11_vnet_prefix=10.1.16.0/24
spoke11_vm_subnet_name=vm
spoke11_vm_subnet_prefix=10.1.16.0/26
spoke12_vnet_name=spoke12
spoke12_vnet_prefix=10.1.17.0/24
spoke12_vm_subnet_name=vm
spoke12_vm_subnet_prefix=10.1.17.0/26
hub2_vnet_name=hub2
hub2_location=eastus
hub2_vnet_prefix=10.2.0.0/20
hub2_rs_subnet_name=RouteServerSubnet
hub2_rs_subnet_prefix=10.2.0.0/24
hub2_rs_name=hub2rs
hub2_nva_subnet_name=nva1ary
hub2_nva_subnet_prefix=10.2.1.0/24
hub2_nva_subnet2_name=nva2ary
hub2_nva_subnet2_prefix=10.2.11.0/24
hub2_nva_asn=65002
hub2_vm_subnet_name=vm
hub2_vm_subnet_prefix=10.2.2.0/24
hub2_gw_subnet_prefix=10.2.3.0/24
hub2_azfw_subnet_prefix=10.2.15.0/24
hub2_spoke_summary=10.2.0.0/16
hub2_nva_overlay_ip=10.251.0.2
spoke21_vnet_name=spoke21
spoke21_vnet_prefix=10.2.16.0/24
spoke21_vm_subnet_name=vm
spoke21_vm_subnet_prefix=10.2.16.0/26
spoke22_vnet_name=spoke22
spoke22_vnet_prefix=10.2.17.0/24
spoke22_vm_subnet_name=vm
spoke22_vm_subnet_prefix=10.2.17.0/26
azfw_policy_name=azfwpolicy
# Auxiliary function to manipulate CIDR
function first_ip(){
subnet=$1
IP=$(echo $subnet | cut -d/ -f 1)
IP_HEX=$(printf '%.2X%.2X%.2X%.2X\n' `echo $IP | sed -e 's/\./ /g'`)
NEXT_IP_HEX=$(printf %.8X `echo $(( 0x$IP_HEX + 1 ))`)
NEXT_IP=$(printf '%d.%d.%d.%d\n' `echo $NEXT_IP_HEX | sed -r 's/(..)/0x\1 /g'`)
echo "$NEXT_IP"
}
# Auxiliary function to get the first private IP of a VM (whose name is supplied as argument)
function get_1st_private_ip(){
vm_name=$1
nic_id=$(az vm show -n "$vm_name" -g "$rg" --query 'networkProfile.networkInterfaces[0].id' -o tsv)
private_ip=$(az network nic show --ids $nic_id --query 'ipConfigurations[0].privateIpAddress' -o tsv) && echo $private_ip
}
# Auxiliary function to get the public IP of a VM (whose name is supplied as argument)
function get_pip(){
vm_name=$1
nic_id=$(az vm show -n "$vm_name" -g "$rg" --query 'networkProfile.networkInterfaces[0].id' -o tsv)
pip_id=$(az network nic show --ids $nic_id --query 'ipConfigurations[0].publicIpAddress.id' -o tsv)
pip=$(az network public-ip show --ids $pip_id --query 'ipAddress' -o tsv) && echo $pip
}
###########
# Start #
###########
# Create Vnets
echo "Creating VNets..."
az group create -n $rg -l $hub1_location -o none
az network vnet create -g $rg -n $hub1_vnet_name --address-prefix $hub1_vnet_prefix --subnet-name $hub1_vm_subnet_name --subnet-prefixes $hub1_vm_subnet_prefix -l $hub1_location -o none
az network vnet subnet create -n $hub1_nva_subnet_name --address-prefix $hub1_nva_subnet_prefix --vnet-name $hub1_vnet_name -g $rg -o none
az network vnet subnet create -n $hub1_nva_subnet2_name --address-prefix $hub1_nva_subnet2_prefix --vnet-name $hub1_vnet_name -g $rg -o none
az network vnet subnet create -n GatewaySubnet --address-prefix $hub1_gw_subnet_prefix --vnet-name $hub1_vnet_name -g $rg -o none
az network vnet subnet create -n RouteServerSubnet --address-prefix $hub1_rs_subnet_prefix --vnet-name $hub1_vnet_name -g $rg -o none
az network vnet create -g $rg -n $spoke11_vnet_name --address-prefix $spoke11_vnet_prefix --subnet-name $spoke11_vm_subnet_name --subnet-prefixes $spoke11_vm_subnet_prefix -l $hub1_location -o none
az network vnet create -g $rg -n $spoke12_vnet_name --address-prefix $spoke12_vnet_prefix --subnet-name $spoke12_vm_subnet_name --subnet-prefixes $spoke12_vm_subnet_prefix -l $hub1_location -o none
if [[ "$hub_no" == "2" ]]
then
az network vnet create -g $rg -n $hub2_vnet_name --address-prefix $hub2_vnet_prefix --subnet-name $hub2_vm_subnet_name --subnet-prefixes $hub2_vm_subnet_prefix -l $hub2_location -o none
az network vnet subnet create -n $hub2_nva_subnet_name --address-prefix $hub2_nva_subnet_prefix --vnet-name $hub2_vnet_name -g $rg -o none
az network vnet subnet create -n $hub2_nva_subnet2_name --address-prefix $hub2_nva_subnet2_prefix --vnet-name $hub2_vnet_name -g $rg -o none
az network vnet subnet create -n GatewaySubnet --address-prefix $hub2_gw_subnet_prefix --vnet-name $hub2_vnet_name -g $rg -o none
az network vnet subnet create -n RouteServerSubnet --address-prefix $hub2_rs_subnet_prefix --vnet-name $hub2_vnet_name -g $rg -o none
az network vnet create -g $rg -n $spoke21_vnet_name --address-prefix $spoke21_vnet_prefix --subnet-name $spoke21_vm_subnet_name --subnet-prefixes $spoke21_vm_subnet_prefix -l $hub2_location -o none
az network vnet create -g $rg -n $spoke22_vnet_name --address-prefix $spoke22_vnet_prefix --subnet-name $spoke22_vm_subnet_name --subnet-prefixes $spoke22_vm_subnet_prefix -l $hub2_location -o none
fi
# Create Route Servers
echo "Creating Route Servers..."
hub1_rs_subnet_id=$(az network vnet subnet show -n RouteServerSubnet --vnet-name $hub1_vnet_name -g $rg --query id -o tsv)
hub1_rs_pip_name="${hub1_rs_name}-pip"
az network public-ip create -g $rg -n "$hub1_rs_pip_name" --allocation-method Static --sku Standard -l $hub1_location -o none
az network routeserver create -n $hub1_rs_name -g $rg --hosted-subnet $hub1_rs_subnet_id -l $hub1_location --public-ip-address $hub1_rs_pip_name -o none
if [[ "$hub_no" == "2" ]]
then
hub2_rs_pip_name="${hub2_rs_name}-pip"
az network public-ip create -g $rg -n "$hub2_rs_pip_name" --allocation-method Static --sku Standard -l $hub2_location -o none
hub2_rs_subnet_id=$(az network vnet subnet show -n RouteServerSubnet --vnet-name $hub2_vnet_name -g $rg --query id -o tsv)
az network routeserver create -n $hub2_rs_name -g $rg --hosted-subnet $hub2_rs_subnet_id -l $hub2_location --public-ip-address $hub2_rs_pip_name -o none
fi
# Optionally, enable for peering with VNGs
if [[ "$ars_hub_b2b" == "yes" ]]
then
echo "Enabling b2b in ARS..."
az network routeserver update -n $hub1_rs_name -g $rg --allow-b2b-traffic true -o none
if [[ "$hub_no" == "2" ]]
then
az network routeserver update -n $hub2_rs_name -g $rg --allow-b2b-traffic true -o none
fi
fi
# Delete Vnet peerings
# az network vnet peering delete -n hub1tospoke11 -g $rg --vnet-name $hub1_vnet_name -o none
# az network vnet peering delete -n spoke11tohub1 -g $rg --vnet-name $spoke11_vnet_name -o none
# az network vnet peering delete -n hub1tospoke12 -g $rg --vnet-name $hub1_vnet_name -o none
# az network vnet peering delete -n spoke12tohub1 -g $rg --vnet-name $spoke12_vnet_name -o none
# if [[ "$hub_no" == "2" ]]
# then
# az network vnet peering delete -n hub2tospoke21 -g $rg --vnet-name $hub2_vnet_name -o none
# az network vnet peering delete -n spoke21tohub2 -g $rg --vnet-name $spoke21_vnet_name -o none
# az network vnet peering delete -n hub2tospoke22 -g $rg --vnet-name $hub2_vnet_name -o none
# az network vnet peering delete -n spoke22tohub2 -g $rg --vnet-name $spoke22_vnet_name -o none
# fi
# Create Vnet peerings
echo "Creating VNet peerings..."
az network vnet peering create -n hub1tospoke11 -g $rg --vnet-name $hub1_vnet_name --remote-vnet $spoke11_vnet_name --allow-vnet-access --allow-forwarded-traffic --allow-gateway-transit -o none
az network vnet peering create -n spoke11tohub1 -g $rg --vnet-name $spoke11_vnet_name --remote-vnet $hub1_vnet_name --allow-vnet-access --allow-forwarded-traffic --use-remote-gateways -o none
az network vnet peering create -n hub1tospoke12 -g $rg --vnet-name $hub1_vnet_name --remote-vnet $spoke12_vnet_name --allow-vnet-access --allow-forwarded-traffic --allow-gateway-transit -o none
az network vnet peering create -n spoke12tohub1 -g $rg --vnet-name $spoke12_vnet_name --remote-vnet $hub1_vnet_name --allow-vnet-access --allow-forwarded-traffic --use-remote-gateways -o none
if [[ "$hub_no" == "2" ]]
then
az network vnet peering create -n hub2tospoke21 -g $rg --vnet-name $hub2_vnet_name --remote-vnet $spoke21_vnet_name --allow-vnet-access --allow-forwarded-traffic --allow-gateway-transit -o none
az network vnet peering create -n spoke21tohub2 -g $rg --vnet-name $spoke21_vnet_name --remote-vnet $hub2_vnet_name --allow-vnet-access --allow-forwarded-traffic --use-remote-gateways -o none
az network vnet peering create -n hub2tospoke22 -g $rg --vnet-name $hub2_vnet_name --remote-vnet $spoke22_vnet_name --allow-vnet-access --allow-forwarded-traffic --allow-gateway-transit -o none
az network vnet peering create -n spoke22tohub2 -g $rg --vnet-name $spoke22_vnet_name --remote-vnet $hub2_vnet_name --allow-vnet-access --allow-forwarded-traffic --use-remote-gateways -o none
az network vnet peering create -n hub1tohub2 -g $rg --vnet-name $hub1_vnet_name --remote-vnet $hub2_vnet_name --allow-vnet-access --allow-forwarded-traffic -o none
az network vnet peering create -n hub2tohub1 -g $rg --vnet-name $hub2_vnet_name --remote-vnet $hub1_vnet_name --allow-vnet-access --allow-forwarded-traffic -o none
fi
# Get RS info
echo "ARS in hub1 info:"
hub1_rs_ip1=$(az network routeserver show -n $hub1_rs_name -g $rg --query 'virtualRouterIps[0]' -o tsv) && echo $hub1_rs_ip1
hub1_rs_ip2=$(az network routeserver show -n $hub1_rs_name -g $rg --query 'virtualRouterIps[1]' -o tsv) && echo $hub1_rs_ip2
hub1_rs_asn=$(az network routeserver show -n $hub1_rs_name -g $rg --query 'virtualRouterAsn' -o tsv) && echo $hub1_rs_asn
if [[ "$hub_no" == "2" ]]
then
echo "ARS in hub2 info:"
hub2_rs_ip1=$(az network routeserver show -n $hub2_rs_name -g $rg --query 'virtualRouterIps[0]' -o tsv) && echo $hub2_rs_ip1
hub2_rs_ip2=$(az network routeserver show -n $hub2_rs_name -g $rg --query 'virtualRouterIps[1]' -o tsv) && echo $hub2_rs_ip2
hub2_rs_asn=$(az network routeserver show -n $hub2_rs_name -g $rg --query 'virtualRouterAsn' -o tsv) && echo $hub2_rs_asn
fi
# Create NSGs for VMs and NVAs (using the same for simplicity)
echo "Creating NSGs..."
hub1_nsg_name="hub1-nsg"
az network nsg create -n "$hub1_nsg_name" -g $rg -l $hub1_location -o none
az network nsg rule create -n SSHin --nsg-name "$hub1_nsg_name" -g $rg --priority 1000 --destination-port-ranges 22 --access Allow --protocol Tcp --direction Inbound -o none
az network nsg rule create -n ICMPin --nsg-name "$hub1_nsg_name" -g $rg --priority 1010 --destination-port-ranges '*' --access Allow --protocol Icmp --direction Inbound -o none
az network nsg rule create -n IKEin --nsg-name "$hub1_nsg_name" -g $rg --priority 1020 --destination-port-ranges 4500 --access Allow --protocol Udp --direction Inbound -o none
az network nsg rule create -n IPsecin --nsg-name "$hub1_nsg_name" -g $rg --priority 1030 --destination-port-ranges 500 --access Allow --protocol Udp --direction Inbound -o none
az network nsg rule create -n RFC1918in --nsg-name "$hub1_nsg_name" -g $rg --priority 1040 --source-address-prefixes '10.0.0.0/8' '10.251.0.0/16' '172.16.0.0/12' --destination-address-prefixes '10.0.0.0/8' '10.251.0.0/16' '172.16.0.0/12' --destination-port-ranges '*' --access Allow --protocol '*' --direction Inbound -o none
az network nsg rule create -n ICMPout --nsg-name "$hub1_nsg_name" -g $rg --priority 1000 --destination-port-ranges '*' --access Allow --protocol Icmp --direction Outbound -o none
az network nsg rule create -n RFC1918out --nsg-name "$hub1_nsg_name" -g $rg --priority 1010 --source-address-prefixes '10.0.0.0/8' '10.251.0.0/16' '172.16.0.0/12' --destination-address-prefixes '10.0.0.0/8' '10.251.0.0/16' '172.16.0.0/12' --destination-port-ranges '*' --access Allow --protocol '*' --direction Outbound -o none
if [[ "$hub_no" == "2" ]]
then
hub2_nsg_name="hub2-nsg"
az network nsg create -n "$hub2_nsg_name" -g $rg -l $hub2_location -o none
az network nsg rule create -n SSHin --nsg-name "$hub2_nsg_name" -g $rg --priority 1000 --destination-port-ranges 22 --access Allow --protocol Tcp --direction Inbound -o none
az network nsg rule create -n ICMPin --nsg-name "$hub2_nsg_name" -g $rg --priority 1010 --destination-port-ranges '*' --access Allow --protocol Icmp --direction Inbound -o none
az network nsg rule create -n IKEin --nsg-name "$hub2_nsg_name" -g $rg --priority 1020 --destination-port-ranges 4500 --access Allow --protocol Udp --direction Inbound -o none
az network nsg rule create -n IPsecin --nsg-name "$hub2_nsg_name" -g $rg --priority 1030 --destination-port-ranges 500 --access Allow --protocol Udp --direction Inbound -o none
az network nsg rule create -n RFC1918in --nsg-name "$hub2_nsg_name" -g $rg --priority 1040 --source-address-prefixes '10.0.0.0/8' '10.251.0.0/16' '172.16.0.0/12' --destination-address-prefixes '10.0.0.0/8' '10.251.0.0/16' '172.16.0.0/12' --destination-port-ranges '*' --access Allow --protocol '*' --direction Inbound -o none
az network nsg rule create -n ICMPout --nsg-name "$hub2_nsg_name" -g $rg --priority 1000 --destination-port-ranges '*' --access Allow --protocol Icmp --direction Outbound -o none
az network nsg rule create -n RFC1918out --nsg-name "$hub2_nsg_name" -g $rg --priority 1010 --source-address-prefixes '10.0.0.0/8' '10.251.0.0/16' '172.16.0.0/12' --destination-address-prefixes '10.0.0.0/8' '10.251.0.0/16' '172.16.0.0/12' --destination-port-ranges '*' --access Allow --protocol '*' --direction Outbound -o none
fi
# Create Log Analytics workspaces in each region (or find an existing one in RG)
hub1_logws_name=$(az monitor log-analytics workspace list -g $rg --query "[?location=='${hub1_location}'].name" -o tsv)
if [[ -z "$hub1_logws_name" ]]
then
hub1_logws_name=log$RANDOM
echo "INFO: Creating log analytics workspace ${hub1_logws_name} in ${hub1_location}..."
az monitor log-analytics workspace create -n $hub1_logws_name -g $rg -l $hub1_location -o none
else
echo "INFO: Log Analytics workspace $hub1_logws_name in $hub1_location found in resource group $rg"
fi
hub1_logws_id=$(az resource list -g $rg -n $hub1_logws_name --query '[].id' -o tsv)
hub1_logws_customerid=$(az monitor log-analytics workspace show -n $hub1_logws_name -g $rg --query customerId -o tsv)
if [[ "$hub_no" == "2" ]]
then
hub2_logws_name=$(az monitor log-analytics workspace list -g $rg --query "[?location=='${hub2_location}'].name" -o tsv)
if [[ -z "$hub2_logws_name" ]]
then
hub2_logws_name=log$RANDOM
echo "INFO: Creating log analytics workspace ${hub2_logws_name} in ${hub2_location}..."
az monitor log-analytics workspace create -n $hub2_logws_name -g $rg -l $hub2_location -o none
else
echo "INFO: Log Analytics workspace $hub2_logws_name in $hub2_location found in resource group $rg"
fi
hub2_logws_id=$(az resource list -g $rg -n $hub2_logws_name --query '[].id' -o tsv)
hub2_logws_customerid=$(az monitor log-analytics workspace show -n $hub2_logws_name -g $rg --query customerId -o tsv)
fi
# Configure flow logs for NSGs in location 1
storage_account1_name=$(az storage account list -g $rg -o tsv --query "[?location=='$hub1_location'].name" | head -1)
if [[ -z "$storage_account1_name" ]]; then
echo "No storage account found in $hub1_location, creating one..."
storage_account1_name=rslogs$RANDOM${hub1_location}
az storage account create -n $storage_account1_name -g $rg --sku Standard_LRS --kind StorageV2 -l $hub1_location -o none
else
echo "Storage account $storage_account1_name found in $hub1_location, using it for NSG flow flogs"
fi
if [[ "$flowlogs2logws" == yes ]]
then
echo "Configuring Flow Logs for NSG $hub1_nsg_name into storage account $storage_account1_name and LA workspace ${hub1_logws_name}..."
az network watcher flow-log create -l $hub1_location -n flowlog$RANDOM -g $rg --nsg $hub1_nsg_name --storage-account $storage_account1_name --log-version 2 --retention 7 \
--traffic-analytics true --workspace $hub1_logws_id --interval 10 -o none
else
echo "Configuring Flow Logs for NSG $hub1_nsg_name into storage account $storage_account1_name..."
az network watcher flow-log create -l $hub1_location -n flowlog$RANDOM -g $rg --nsg $hub1_nsg_name --storage-account $storage_account1_name --log-version 2 --retention 7 -o none
fi
# Configure flow logs for NSGs in location 2
if [[ "$hub_no" == "2" ]]
then
storage_account2_name=$(az storage account list -g $rg -o tsv --query "[?location=='$hub2_location'].name" | head -1)
if [[ -z "$storage_account2_name" ]]; then
echo "No storage account found in $hub2_location, creating one..."
storage_account2_name=rslogs$RANDOM${hub2_location}
az storage account create -n $storage_account2_name -g $rg --sku Standard_LRS --kind StorageV2 -l $hub2_location -o none
else
echo "Storage account $storage_account2_name found in $hub2_location, using it for NSG flow flogs"
fi
if [[ "$flowlogs2logws" == yes ]]
then
echo "Configuring Flow Logs for NSG $hub2_nsg_name into storage account $storage_account2_name and LA workspace ${hub2_logws_name}..."
az network watcher flow-log create -l $hub2_location -n flowlog$RANDOM -g $rg --nsg $hub2_nsg_name --storage-account $storage_account2_name --log-version 2 --retention 7 \
--traffic-analytics true --workspace $hub2_logws_id --interval 10 -o none
else
echo "Configuring Flow Logs for NSG $hub2_nsg_name into storage account $storage_account2_name..."
az network watcher flow-log create -l $hub2_location -n flowlog$RANDOM -g $rg --nsg $hub2_nsg_name --storage-account $storage_account2_name --log-version 2 --retention 7 -o none
fi
fi
# Create test VMs in each subnet
vm_size=Standard_B1s
hub1_vm_name="${hub1_vnet_name}-vm"
hub1_vm_pip_name="${hub1_vm_name}-pip"
echo "Creating VMs..."
az vm create -n $hub1_vm_name -g $rg -l $hub1_location --image ubuntuLTS --generate-ssh-keys --public-ip-address ${hub1_vm_pip_name} --public-ip-sku Standard --vnet-name $hub1_vnet_name --size $vm_size --subnet $hub1_vm_subnet_name --nsg $hub1_nsg_name -o none
hub1_vm_pip=$(az network public-ip show -n $hub1_vm_pip_name --query ipAddress -o tsv -g $rg)
hub1_vm_nic_id=$(az vm show -n "$hub1_vm_name" -g "$rg" --query 'networkProfile.networkInterfaces[0].id' -o tsv)
hub1_vm_private_ip=$(az network nic show --ids $hub1_vm_nic_id --query 'ipConfigurations[0].privateIpAddress' -o tsv)
spoke11_vm_name="${spoke11_vnet_name}-vm"
spoke11_vm_pip_name="${spoke11_vm_name}-pip"
az vm create -n $spoke11_vm_name -g $rg -l $hub1_location --image ubuntuLTS --generate-ssh-keys --public-ip-address ${spoke11_vm_pip_name} --public-ip-sku Standard --vnet-name $spoke11_vnet_name --size $vm_size --subnet $spoke11_vm_subnet_name --nsg $hub1_nsg_name -o none
spoke11_vm_pip=$(az network public-ip show -n $spoke11_vm_pip_name --query ipAddress -o tsv -g $rg)
spoke11_vm_nic_id=$(az vm show -n "$spoke11_vm_name" -g "$rg" --query 'networkProfile.networkInterfaces[0].id' -o tsv)
spoke11_vm_private_ip=$(az network nic show --ids $spoke11_vm_nic_id --query 'ipConfigurations[0].privateIpAddress' -o tsv)
spoke12_vm_name="${spoke12_vnet_name}-vm"
spoke12_vm_pip_name="${spoke12_vm_name}-pip"
az vm create -n $spoke12_vm_name -g $rg -l $hub1_location --image ubuntuLTS --generate-ssh-keys --public-ip-address ${spoke12_vm_pip_name} --public-ip-sku Standard --vnet-name $spoke12_vnet_name --size $vm_size --subnet $spoke12_vm_subnet_name --nsg $hub1_nsg_name -o none
spoke12_vm_pip=$(az network public-ip show -n $spoke12_vm_pip_name --query ipAddress -o tsv -g $rg)
spoke12_vm_nic_id=$(az vm show -n "$spoke12_vm_name" -g "$rg" --query 'networkProfile.networkInterfaces[0].id' -o tsv)
spoke12_vm_private_ip=$(az network nic show --ids $spoke12_vm_nic_id --query 'ipConfigurations[0].privateIpAddress' -o tsv)
if [[ "$hub_no" == "2" ]]
then
hub2_vm_name="${hub2_vnet_name}-vm"
hub2_vm_pip_name="${hub2_vm_name}-pip"
az vm create -n $hub2_vm_name -g $rg -l $hub2_location --image ubuntuLTS --generate-ssh-keys --public-ip-address ${hub2_vm_pip_name} --public-ip-sku Standard --vnet-name $hub2_vnet_name --size $vm_size --subnet $hub2_vm_subnet_name --nsg $hub2_nsg_name -o none
hub2_vm_pip=$(az network public-ip show -n $hub2_vm_pip_name --query ipAddress -o tsv -g $rg)
hub2_vm_nic_id=$(az vm show -n "$hub2_vm_name" -g "$rg" --query 'networkProfile.networkInterfaces[0].id' -o tsv)
hub2_vm_private_ip=$(az network nic show --ids $hub2_vm_nic_id --query 'ipConfigurations[0].privateIpAddress' -o tsv)
spoke21_vm_name="${spoke21_vnet_name}-vm"
spoke21_vm_pip_name="${spoke21_vm_name}-pip"
az vm create -n $spoke21_vm_name -g $rg -l $hub2_location --image ubuntuLTS --generate-ssh-keys --public-ip-address ${spoke21_vm_pip_name} --public-ip-sku Standard --vnet-name $spoke21_vnet_name --size $vm_size --subnet $spoke21_vm_subnet_name --nsg $hub2_nsg_name -o none
spoke21_vm_pip=$(az network public-ip show -n $spoke21_vm_pip_name --query ipAddress -o tsv -g $rg)
spoke21_vm_nic_id=$(az vm show -n "$spoke21_vm_name" -g "$rg" --query 'networkProfile.networkInterfaces[0].id' -o tsv)
spoke21_vm_private_ip=$(az network nic show --ids $spoke21_vm_nic_id --query 'ipConfigurations[0].privateIpAddress' -o tsv)
spoke22_vm_name="${spoke22_vnet_name}-vm"
spoke22_vm_pip_name="${spoke22_vm_name}-pip"
az vm create -n $spoke22_vm_name -g $rg -l $hub2_location --image ubuntuLTS --generate-ssh-keys --public-ip-address ${spoke22_vm_pip_name} --public-ip-sku Standard --vnet-name $spoke22_vnet_name --size $vm_size --subnet $spoke22_vm_subnet_name --nsg $hub2_nsg_name -o none
spoke22_vm_pip=$(az network public-ip show -n $spoke22_vm_pip_name --query ipAddress -o tsv -g $rg)
spoke22_vm_nic_id=$(az vm show -n "$spoke22_vm_name" -g "$rg" --query 'networkProfile.networkInterfaces[0].id' -o tsv)
spoke22_vm_private_ip=$(az network nic show --ids $spoke22_vm_nic_id --query 'ipConfigurations[0].privateIpAddress' -o tsv)
fi
# Optional: create AzFW
if [[ "$create_azfw" == "yes" ]]
then
# AzFW Policy (for both hubs)
echo "Creating Azure Firewall Policy..."
az network firewall policy create -n "$azfw_policy_name" -g $rg --sku Standard -o none
azfw_policy_id=$(az network firewall policy show -n $azfw_policy_name -g $rg --query id -o tsv)
# Net rule for ICMP
az network firewall policy rule-collection-group create -n ruleset01 --policy-name $azfw_policy_name -g $rg --priority 2000 -o none
az network firewall policy rule-collection-group collection add-filter-collection --policy-name $azfw_policy_name --rule-collection-group-name ruleset01 -g $rg \
--name NetworkTraffic --collection-priority 2500 --action Allow --rule-name permitAll --rule-type NetworkRule --description "Permit all traffic" \
--destination-addresses '*' --destination-ports '*' --source-addresses '*' --ip-protocols 'Any' -o none
azfw_policy_id=$(az network firewall policy show -n $azfw_policy_name -g $rg --query id -o tsv)
# Hub1 AzFW
az network vnet subnet create -n AzureFirewallSubnet --address-prefix $hub1_azfw_subnet_prefix --vnet-name $hub1_vnet_name -g $rg -o none
hub1_azfw_name=azfw1
hub1_azfw_pip_name="${hub1_azfw_name}-pip"
echo "Creating Azure Firewall ${hub1_azfw_name}..."
az network public-ip create -g $rg -n $hub1_azfw_pip_name --sku Standard --allocation-method static -l $hub1_location -o none
hub1_azfw_ip=$(az network public-ip show -g $rg -n $hub1_azfw_pip_name --query ipAddress -o tsv)
az network firewall create -n $hub1_azfw_name -g $rg -l $hub1_location --policy $azfw_policy_id -o none
hub1_azfw_id=$(az network firewall show -n $hub1_azfw_name -g $rg -o tsv --query id)
az network firewall ip-config create -f $hub1_azfw_name -n "${hub1_azfw_name}-ipconfig" -g $rg --public-ip-address $hub1_azfw_pip_name --vnet-name $hub1_vnet_name -o none
az network firewall update -n $hub1_azfw_name -g $rg -o none
hub1_azfw_private_ip=$(az network firewall show -n $hub1_azfw_name -g $rg --query 'ipConfigurations[0].privateIpAddress' -o tsv)
# Logs
az monitor diagnostic-settings create -n mydiag --resource $hub1_azfw_id --workspace $hub1_logws_id \
--metrics '[{"category": "AllMetrics", "enabled": true, "retentionPolicy": {"days": 0, "enabled": false }, "timeGrain": null}]' \
--logs '[{"category": "AzureFirewallApplicationRule", "enabled": true, "retentionPolicy": {"days": 0, "enabled": false}},
{"category": "AzureFirewallNetworkRule", "enabled": true, "retentionPolicy": {"days": 0, "enabled": false}}]' >/dev/null
# Hub2 AzFW
if [[ "$hub_no" == "2" ]]
then
az network vnet subnet create -n AzureFirewallSubnet --address-prefix $hub2_azfw_subnet_prefix --vnet-name $hub2_vnet_name -g $rg -o none
hub2_azfw_name=azfw2
hub2_azfw_pip_name="${hub2_azfw_name}-pip"
echo "Creating Azure Firewall ${hub2_azfw_name}..."
az network public-ip create -g $rg -n $hub2_azfw_pip_name --sku Standard --allocation-method static -l $hub2_location -o none
hub2_azfw_ip=$(az network public-ip show -g $rg -n $hub2_azfw_pip_name --query ipAddress -o tsv)
az network firewall create -n $hub2_azfw_name -g $rg -l $hub2_location --policy $azfw_policy_id -o none
hub2_azfw_id=$(az network firewall show -n $hub2_azfw_name -g $rg -o tsv --query id)
az network firewall ip-config create -f $hub2_azfw_name -n "${hub2_azfw_name}-ipconfig" -g $rg --public-ip-address $hub2_azfw_pip_name --vnet-name $hub2_vnet_name -o none
az network firewall update -n $hub2_azfw_name -g $rg -o none
hub2_azfw_private_ip=$(az network firewall show -n $hub2_azfw_name -g $rg --query 'ipConfigurations[0].privateIpAddress' -o tsv)
# Logs
az monitor diagnostic-settings create -n mydiag --resource $hub2_azfw_id --workspace $hub2_logws_id \
--metrics '[{"category": "AllMetrics", "enabled": true, "retentionPolicy": {"days": 0, "enabled": false }, "timeGrain": null}]' \
--logs '[{"category": "AzureFirewallApplicationRule", "enabled": true, "retentionPolicy": {"days": 0, "enabled": false}},
{"category": "AzureFirewallNetworkRule", "enabled": true, "retentionPolicy": {"days": 0, "enabled": false}}]' >/dev/null
fi
fi
# Create NVA: Ubuntu VM with Bird and StrongSwan
if [[ "$nva_type" == "linux1nic" ]] || [[ "$nva_type" == "linux2nic" ]]
then
nva_size=Standard_B1s
publisher=Canonical
offer=UbuntuServer
sku=18.04-LTS
version=$(az vm image list -p $publisher -f $offer -s $sku --all --query '[0].version' -o tsv 2>/dev/null)
nva_cloudinit_file=/tmp/nva_cloudinit.txt
cat <<EOF > $nva_cloudinit_file
#cloud-config
runcmd:
- apt update
- UCF_FORCE_CONFOLD=1 DEBIAN_FRONTEND=noninteractive apt install -y bird strongswan
- sysctl -w net.ipv4.ip_forward=1
- sysctl -w net.ipv4.conf.all.accept_redirects=0
- sysctl -w net.ipv4.conf.all.send_redirects=0
EOF
# Hub1 NVA creation
hub1_nva_asn=65001
for nva_id in $(seq 1 $nva_no)
do
hub1_nva_name="hub1nva${nva_id}"
hub1_nva_pip="${hub1_nva_name}-pip"
# Option 1: 1-NIC NVA
echo "Creating NVA ${hub1_nva_name}..."
if [[ "$nva_type" == "linux1nic" ]]
then
az vm create -n $hub1_nva_name -g $rg -l $hub1_location --image ubuntuLTS --generate-ssh-keys \
--public-ip-address $hub1_nva_pip --public-ip-sku Standard --vnet-name $hub1_vnet_name --size $nva_size --subnet $hub1_nva_subnet_name \
--custom-data $nva_cloudinit_file --nsg $hub1_nsg_name -o none
hub1_nva_nic_id=$(az vm show -n $hub1_nva_name -g "$rg" --query 'networkProfile.networkInterfaces[0].id' -o tsv)
az network nic update --ids $hub1_nva_nic_id --ip-forwarding -o none
# Option 2: 2-NIC NVA
else
az network public-ip create -g $rg -n "$hub1_nva_pip" --allocation-method Static --sku Standard -l $hub1_location -o none
az network nic create -n "${hub1_nva_name}-nic0" -g $rg --vnet-name $hub1_vnet_name --subnet $hub1_nva_subnet_name \
--network-security-group "$hub1_nsg_name" --public-ip-address $hub1_nva_pip --ip-forwarding -l $hub1_location -o none
az network nic create -n "${hub1_nva_name}-nic1" -g $rg --vnet-name $hub1_vnet_name --subnet $hub1_nva_subnet2_name \
--network-security-group "$hub1_nsg_name" --ip-forwarding -l $hub1_location -o none
az vm create -n $hub1_nva_name -g $rg -l $hub1_location --image ubuntuLTS --generate-ssh-keys \
--size ${nva_size} --custom-data "$nva_cloudinit_file" --nics "${hub1_nva_name}-nic0" "${hub1_nva_name}-nic1" -o none
fi
# Get NVA data
echo "$hub1_nva_name info:"
hub1_nva_pip_ip=$(az network public-ip show -n $hub1_nva_pip -g $rg --query ipAddress -o tsv) && echo $hub1_nva_pip_ip
hub1_nva_private_ip=$(get_1st_private_ip $hub1_nva_name) && echo $hub1_nva_private_ip
hub1_nva_default_gw=$(first_ip "$hub1_nva_subnet_prefix") && echo $hub1_nva_default_gw
if [[ "$nva_type" == "linux2nic" ]]
then
hub1_nva_private_ip2=$(az network nic show -n "${hub1_nva_name}-nic1" -g $rg --query 'ipConfigurations[0].privateIpAddress' -o tsv) && echo $hub1_nva_private_ip2
hub1_nva_default_gw2=$(first_ip "$hub1_nva_subnet2_prefix") && echo $hub1_nva_default_gw2
fi
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $hub1_nva_pip_ip "ip a"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $hub1_nva_pip_ip "systemctl status bird"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $hub1_nva_pip_ip "sudo birdc show route"
done
# Internal LB in front of redundant NVAs
if [[ "$nva_no" == "2" ]]
then
nva_lb_name=hub1_nva
echo "Creating LB ${nva_lb_name}..."
az network lb create -n $nva_lb_name -g $rg -l $hub1_location --sku Standard --vnet-name $hub1_vnet_name --subnet $hub1_nva_subnet_name --frontend-ip-name nvafrontend --backend-pool-name nvas -o none
az network lb probe create -n nvaprobe --lb-name $nva_lb_name -g $rg --protocol tcp --port 22 -o none
az network lb rule create -n nvahaports --lb-name $nva_lb_name -g $rg --protocol All --frontend-port 0 --backend-port 0 --frontend-ip-name nvafrontend --backend-pool-name nvas --probe-name nvaprobe -o none
hub1_lb_ip=$(az network lb frontend-ip show -n nvafrontend --lb-name $nva_lb_name -g $rg --query privateIpAddress -o tsv)
for nva_id in $(seq 1 $nva_no)
do
hub1_nva_name="hub1nva${nva_id}"
hub1_nva_nic_id=$(az vm show -n $hub1_nva_name -g "$rg" --query 'networkProfile.networkInterfaces[0].id' -o tsv)
hub1_nva_nic_name=$(az network nic show --ids $hub1_nva_nic_id --query name -o tsv)
hub1_nva_ipconfig_name=$(az network nic show --ids $hub1_nva_nic_id --query 'ipConfigurations[0].name' -o tsv)
az network nic ip-config address-pool add --address-pool nvas --lb-name $nva_lb_name -g $rg --ip-config-name $hub1_nva_ipconfig_name --nic-name $hub1_nva_nic_name -o none
done
fi
# Hub2 NVA creation
if [[ "$hub_no" == "2" ]]
then
hub2_nva_asn=65002
for nva_id in $(seq 1 $nva_no)
do
hub2_nva_name="hub2nva${nva_id}"
hub2_nva_pip="${hub2_nva_name}-pip"
# Option 1: 1-NIC NVA
echo "Creating NVA ${hub2_nva_name}..."
if [[ "$nva_type" == "linux1nic" ]]
then
az vm create -n $hub2_nva_name -g $rg -l $hub2_location --image ubuntuLTS --generate-ssh-keys \
--public-ip-address $hub2_nva_pip --public-ip-sku Standard --vnet-name $hub2_vnet_name --size $nva_size --subnet $hub2_nva_subnet_name \
--custom-data $nva_cloudinit_file --nsg $hub2_nsg_name -o none
hub2_nva_nic_id=$(az vm show -n $hub2_nva_name -g "$rg" --query 'networkProfile.networkInterfaces[0].id' -o tsv)
az network nic update --ids $hub2_nva_nic_id --ip-forwarding -o none
# Option 2: 2-NIC NVA
else
az network public-ip create -g $rg -n "$hub2_nva_pip" --allocation-method Static --sku Standard -l $hub2_location -o none
az network nic create -n "${hub2_nva_name}-nic0" -g $rg --vnet-name $hub2_vnet_name --subnet $hub2_nva_subnet_name \
--network-security-group "$hub2_nsg_name" --public-ip-address $hub2_nva_pip --ip-forwarding -l $hub2_location -o none
az network nic create -n "${hub2_nva_name}-nic1" -g $rg --vnet-name $hub2_vnet_name --subnet $hub2_nva_subnet2_name \
--network-security-group "$hub2_nsg_name" --ip-forwarding -l $hub2_location -o none
az vm create -n $hub2_nva_name -g $rg -l $hub2_location --image ubuntuLTS --generate-ssh-keys \
--size ${nva_size} --custom-data "$nva_cloudinit_file" --nics "${hub2_nva_name}-nic0" "${hub2_nva_name}-nic1" -o none
fi
# Get NVA Data
echo "$hub2_nva_name info:"
hub2_nva_pip_ip=$(az network public-ip show -n $hub2_nva_pip -g $rg --query ipAddress -o tsv) && echo $hub2_nva_pip_ip
hub2_nva_private_ip=$(get_1st_private_ip $hub2_nva_name) && echo $hub2_nva_private_ip
hub2_nva_default_gw=$(first_ip "$hub2_nva_subnet_prefix") && echo $hub2_nva_default_gw
if [[ "$nva_type" == "linux2nic" ]]
then
hub2_nva_private_ip2=$(az network nic show -n "${hub2_nva_name}-nic1" -g $rg --query 'ipConfigurations[0].privateIpAddress' -o tsv) && echo $hub2_nva_private_ip2
hub2_nva_default_gw2=$(first_ip "$hub2_nva_subnet2_prefix") && echo $hub2_nva_default_gw2
fi
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $hub2_nva_pip_ip "ip a"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $hub2_nva_pip_ip "systemctl status bird"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $hub2_nva_pip_ip "sudo birdc show route"
done
# Internal LB in front of redundant NVAs
if [[ "$nva_no" == "2" ]]
then
nva_lb_name=hub2_nva
echo "Creating LB ${nva_lb_name}..."
az network lb create -n $nva_lb_name -g $rg -l $hub2_location --sku Standard --vnet-name $hub2_vnet_name --subnet $hub2_nva_subnet_name --frontend-ip-name nvafrontend --backend-pool-name nvas -o none
az network lb probe create -n nvaprobe --lb-name $nva_lb_name -g $rg --protocol tcp --port 22 -o none
az network lb rule create -n nvahaports --lb-name $nva_lb_name -g $rg --protocol All --frontend-port 0 --backend-port 0 --frontend-ip-name nvafrontend --backend-pool-name nvas --probe-name nvaprobe -o none
hub2_lb_ip=$(az network lb frontend-ip show -n nvafrontend --lb-name $nva_lb_name -g $rg --query privateIpAddress -o tsv)
for nva_id in $(seq 1 $nva_no)
do
hub2_nva_name="hub2nva${nva_id}"
hub2_nva_nic_id=$(az vm show -n $hub2_nva_name -g "$rg" --query 'networkProfile.networkInterfaces[0].id' -o tsv)
hub2_nva_nic_name=$(az network nic show --ids $hub2_nva_nic_id --query name -o tsv)
hub2_nva_ipconfig_name=$(az network nic show --ids $hub2_nva_nic_id --query 'ipConfigurations[0].name' -o tsv)
az network nic ip-config address-pool add --address-pool nvas --lb-name $nva_lb_name -g $rg --ip-config-name $hub2_nva_ipconfig_name --nic-name $hub2_nva_nic_name -o none
done
fi
fi
fi
# Create RTs and attach to NVA subnets, to potentially overwrite some of the routes
echo "Creating Route Tables for NVA subnets..."
# Hub1
hub1_nva_rt_name=hub1nva
az network route-table create -n $hub1_nva_rt_name -g $rg -l $hub1_location -o none
az network vnet subnet update -g $rg --vnet-name $hub1_vnet_name -n $hub1_nva_subnet_name --route-table $hub1_nva_rt_name -o none
# If multiple hubs and not using VXLAN, we need to overwrite the route for the remote hub on the local NVA subnet with next hop the remote ALB
if [[ "$hub_no" == "2" ]] && [[ "use_vxlan" == "no" ]]
then
echo "Adding route in hub1 NVA subnet for $hub2_spoke_summary and next hop $hub2_lb_ip..."
az network route-table route create --route-table-name $hub1_nva_rt_name -g $rg --address-prefix $hub2_spoke_summary -n hub2 --next-hop-type VirtualAppliance --next-hop-ip-address $hub2_lb_ip -o none
fi
# If using 2-NIC NVAs, we need to create RTs for the second NIC
if [[ "$nva_type" == "linux2nic" ]]
then
hub1_nva_rt2_name=hub1nva2
az network route-table create -n $hub1_nva_rt2_name -g $rg -l $hub1_location -o none
az network vnet subnet update -g $rg --vnet-name $hub1_vnet_name -n $hub1_nva_subnet2_name --route-table $hub1_nva_rt2_name -o none
# If using the 2nd NIC for the hub-to-hub traffic, we can disable BGP propagation
az network route-table update -n $hub1_nva_rt2_name -g $rg --disable-bgp-route-propagation true -o none
if [[ "$hub_no" == "2" ]] && [[ "use_vxlan" == "no" ]]
then
az network route-table route create --route-table-name $hub1_nva_rt2_name -g $rg --address-prefix $hub2_spoke_summary -n hub2 --next-hop-type VirtualAppliance --next-hop-ip-address $hub2_lb_ip -o none
fi
fi
# Hub2
if [[ "$hub_no" == "2" ]]
then
hub2_nva_rt_name=hub2nva
az network route-table create -n $hub2_nva_rt_name -g $rg -l $hub2_location -o none
az network vnet subnet update -g $rg --vnet-name $hub2_vnet_name -n $hub2_nva_subnet_name --route-table $hub2_nva_rt_name -o none
# If multiple hubs and not using VXLAN, we need to overwrite the route for the remote hub on the local NVA subnet with next hop the remote ALB
if [[ "use_vxlan" == "no" ]]
then
echo "Adding route in hub1 NVA subnet for $hub2_spoke_summary and next hop $hub2_lb_ip..."
az network route-table route create --route-table-name $hub2_nva_rt_name -g $rg --address-prefix $hub1_spoke_summary -n hub1 --next-hop-type VirtualAppliance --next-hop-ip-address $hub1_lb_ip -o none
fi
if [[ "$nva_type" == "linux2nic" ]]
then
hub2_nva_rt2_name=hub2nva2
az network route-table create -n $hub2_nva_rt2_name -g $rg -l $hub2_location -o none
az network vnet subnet update -g $rg --vnet-name $hub2_vnet_name -n $hub2_nva_subnet2_name --route-table $hub2_nva_rt2_name -o none
az network route-table update -n $hub2_nva_rt2_name -g $rg --disable-bgp-route-propagation true -o none
# If using the 2nd NIC for the hub-to-hub traffic, we can disable BGP propagation
az network route-table update -n $hub1_nva_rt2_name -g $rg --disable-bgp-route-propagation true -o none
if [[ "$hub_no" == "2" ]] && [[ "use_vxlan" == "no" ]]
then
az network route-table route create --route-table-name $hub2_nva_rt2_name -g $rg --address-prefix $hub1_spoke_summary -n hub1 --next-hop-type VirtualAppliance --next-hop-ip-address $hub1_nva_private_ip2 -o none
fi
fi
fi
# Create VXLAN tunnels between Linux NVAs in both hubs and configure static routing
if [[ "$hub_no" == "2" ]] && [[ "$nva_type" == "linux1nic" || "$nva_type" == "linux2nic" ]]
then
if [[ "$use_vxlan" == "yes" ]]
then
if [[ "$nva_type" == "linux1nic" ]]
then
# IF using VXLAN and single-NIC Linux
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $hub1_nva_pip_ip "sudo ip link add vxlan0 type vxlan id 1 remote $hub2_nva_private_ip dstport 4789 dev eth0"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $hub1_nva_pip_ip "sudo ip link set vxlan0 up"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $hub1_nva_pip_ip "sudo ip addr add ${hub1_nva_overlay_ip}/30 dev vxlan0"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $hub1_nva_pip_ip "sudo ip route add $hub2_nva_private_ip/32 via $hub1_nva_default_gw"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $hub1_nva_pip_ip "sudo ifconfig eth0 mtu 1600"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $hub2_nva_pip_ip "sudo ip link add vxlan0 type vxlan id 1 remote $hub1_nva_private_ip dstport 4789 dev eth0"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $hub2_nva_pip_ip "sudo ip link set vxlan0 up"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $hub2_nva_pip_ip "sudo ip addr add ${hub2_nva_overlay_ip}/30 dev vxlan0"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $hub2_nva_pip_ip "sudo ip route add $hub1_nva_private_ip/32 via $hub2_nva_default_gw"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $hub2_nva_pip_ip "sudo ifconfig eth0 mtu 1600"
else
# If not usig VXLAN tunnels but 2ary NICs, create routes to the 2ary NIC
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $hub1_nva_pip_ip "sudo ip route add $hub2_nva_private_ip2/32 via $hub1_nva_default_gw2"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $hub2_nva_pip_ip "sudo ip route add $hub1_nva_private_ip2/32 via $hub2_nva_default_gw2"
fi
else
# If not using VXLAN
# Static routes so that the learnt BGP routes for the remote hub do not create routing loops
echo "Setting static routes in the Linux NVAs..."
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $(get_pip hub1nva1) "sudo ip route add $(get_1st_private_ip hub2nva1)/32 via $hub1_nva_default_gw"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $(get_pip hub1nva1) "sudo ip route add ${hub2_lb_ip}/32 via $hub1_nva_default_gw"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $(get_pip hub2nva1) "sudo ip route add $(get_1st_private_ip hub1nva1)/32 via $hub2_nva_default_gw"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $(get_pip hub2nva1) "sudo ip route add ${hub1_lb_ip}/32 via $hub2_nva_default_gw"
if [[ "$nva_no" == "2" ]]
then
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $(get_pip hub1nva1) "sudo ip route add $(get_1st_private_ip hub2nva2)/32 via $hub1_nva_default_gw"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $(get_pip hub1nva2) "sudo ip route add $(get_1st_private_ip hub2nva1)/32 via $hub1_nva_default_gw"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $(get_pip hub1nva2) "sudo ip route add $(get_1st_private_ip hub2nva2)/32 via $hub1_nva_default_gw"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $(get_pip hub1nva2) "sudo ip route add ${hub2_lb_ip}/32 via $hub1_nva_default_gw"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $(get_pip hub2nva1) "sudo ip route add $(get_1st_private_ip hub1nva2)/32 via $hub2_nva_default_gw"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $(get_pip hub2nva2) "sudo ip route add $(get_1st_private_ip hub1nva1)/32 via $hub2_nva_default_gw"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $(get_pip hub2nva2) "sudo ip route add $(get_1st_private_ip hub1nva2)/32 via $hub2_nva_default_gw"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $(get_pip hub2nva2) "sudo ip route add ${hub1_lb_ip}/32 via $hub2_nva_default_gw"
fi
fi
fi
# RS adjacencies
for nva_id in $(seq 1 $nva_no)
do
hub1_nva_name="hub1nva${nva_id}"
hub1_nva_private_ip=$(get_1st_private_ip $hub1_nva_name)
echo "Creating ARS peering between ${hub1_rs_name} and ${hub1_nva_name}..."
az network routeserver peering create --routeserver $hub1_rs_name -g $rg --peer-ip $hub1_nva_private_ip --peer-asn $hub1_nva_asn -n $hub1_nva_name -o none
if [[ "$hub_no" == "2" ]]
then
hub2_nva_name="hub2nva${nva_id}"
hub2_nva_private_ip=$(get_1st_private_ip $hub2_nva_name)
echo "Creating ARS peering between ${hub2_rs_name} and ${hub2_nva_name}..."
az network routeserver peering create --routeserver $hub2_rs_name -g $rg --peer-ip $hub2_nva_private_ip --peer-asn $hub2_nva_asn -n $hub2_nva_name -o none
fi
done
# Configure NVAs iptables firewall
for hub_id in $(seq 1 $hub_no)
do
for nva_id in $(seq 1 $nva_no)
do
nva_name="hub${hub_id}nva${nva_id}"
nva_pip=$(get_pip $nva_name)
if [[ -z "$nva_pip" ]]
then
echo "Not able to get public IP address for VM ${nva_name}"
else
echo "Configuring iptables in NVA ${nva_name} (${nva_pip})..."
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $nva_pip "sudo iptables -P FORWARD DROP"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $nva_pip "sudo iptables -A FORWARD -m conntrack --ctstate INVALID -j DROP"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $nva_pip "sudo iptables -A FORWARD -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $nva_pip "sudo iptables -A FORWARD -p tcp --syn --dport 22 -m conntrack --ctstate NEW -j ACCEPT"
fi
done
done
# BGP config with 1 hub
if [[ "$hub_no" == "1" ]]
then
for nva_id in $(seq 1 $nva_no)
do
# Get NVA Data
hub1_nva_name="hub1nva${nva_id}"
hub1_nva_pip="${hub1_nva_name}-pip"
echo "Getting $hub1_nva_name info..."
hub1_nva_pip_ip=$(az network public-ip show -n $hub1_nva_pip -g $rg --query ipAddress -o tsv)
hub1_nva_private_ip=$(get_1st_private_ip $hub1_nva_name)
hub1_nva_default_gw=$(first_ip "$hub1_nva_subnet_prefix")
if [[ "$nva_type" == "linux2nic" ]]
then
hub1_nva_private_ip2=$(az network nic show -n "${hub1_nva_name}-nic1" -g $rg --query 'ipConfigurations[0].privateIpAddress' -o tsv)
hub1_nva_default_gw2=$(first_ip "$hub1_nva_subnet2_prefix")
fi
# BGP next hop for the local hub prefix
if [[ "$next_hop" == "lb" ]]
then
local_hub_prefix_next_hop=$hub1_lb_ip
elif [[ "$next_hop" == "azfw" ]]
then
local_hub_prefix_next_hop=$hub1_azfw_private_ip
else
local_hub_prefix_next_hop=$hub1_nva_private_ip
fi
# bird.conf for hub1
bird_config_file=/tmp/bird.conf
cat <<EOF > $bird_config_file
log syslog all;
router id $hub1_nva_private_ip;
protocol device {
scan time 10;
}
protocol direct {
disabled;
}
protocol kernel {
export where source != RTS_STATIC;
}
protocol static {
route $hub1_rs_ip1/32 via $hub1_nva_default_gw;
route $hub1_rs_ip2/32 via $hub1_nva_default_gw;
route 1${nva_id}.1${nva_id}.1${nva_id}.1${nva_id}/32 via $hub1_nva_default_gw; # Test route
# route $hub2_nva_overlay_ip/32 via "vxlan0";
$([[ "$nva_type" == "linux2nic" && "$hub_no" == "2" ]] && echo "route $hub2_nva_private_ip2/32 via $hub1_nva_default_gw2;" || echo "")
route $hub1_spoke_summary via $hub1_nva_default_gw;
}
template bgp PEERS {
local as $hub1_nva_asn;
multihop;
}
filter TO_RS {
# Accept test route
if (net = 1${nva_id}.1${nva_id}.1${nva_id}.1${nva_id}/32) then { accept; }
# Drop other long prefixes (see /32 in static routes)
if ( net ~ [ 0.0.0.0/0{30,32} ] ) then { reject; }
# Optionally set next hop for hub prefix as the LB
if (net = $hub1_spoke_summary) then
{
bgp_next_hop = $local_hub_prefix_next_hop;
accept;
}
# Accept everything else
else {
bgp_path.delete(65515); # In case routes from a VNG arrive here
accept;
}
}
protocol bgp rs0 from PEERS {
description "RouteServer instance 0";
neighbor $hub1_rs_ip1 as $hub1_rs_asn;
import all;
export filter TO_RS;
}
protocol bgp rs1 from PEERS {
description "RouteServer instance 1";
neighbor $hub1_rs_ip2 as $hub1_rs_asn;
import all;
export filter TO_RS;
}
EOF
hub1_nva_user=$(ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $hub1_nva_pip_ip "whoami")
echo "Uploading BIRD config file to ${hub1_nva_name}..."
scp $bird_config_file "${hub1_nva_pip_ip}:/home/${hub1_nva_user}/bird.conf"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $hub1_nva_pip_ip "sudo mv /home/${hub1_nva_user}/bird.conf /etc/bird/bird.conf"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $hub1_nva_pip_ip "sudo systemctl restart bird"
done
# BGP config with 2 hubs
else
# With 2 hubs each NVA needs to talk to each other
# This 2-hub use case still needs to be modified for 2 NVAs/hub
# Hub1 NVA bird config file
for nva_id in $(seq 1 $nva_no)
do
# Get NVA Data
hub1_nva_name="hub1nva${nva_id}"
hub1_nva_pip="${hub1_nva_name}-pip"
echo "Getting $hub1_nva_name info..."
hub1_nva_pip_ip=$(az network public-ip show -n $hub1_nva_pip -g $rg --query ipAddress -o tsv)
hub1_nva_private_ip=$(get_1st_private_ip $hub1_nva_name)
hub1_nva_default_gw=$(first_ip "$hub1_nva_subnet_prefix")
if [[ "$nva_type" == "linux2nic" ]]
then
hub1_nva_private_ip2=$(az network nic show -n "${hub1_nva_name}-nic1" -g $rg --query 'ipConfigurations[0].privateIpAddress' -o tsv)
hub1_nva_default_gw2=$(first_ip "$hub1_nva_subnet2_prefix")
fi
# BGP next hop for the local hub prefix
if [[ "$next_hop" == "lb" ]]
then
local_hub_prefix_next_hop=$hub1_lb_ip
elif [[ "$next_hop" == "azfw" ]]
then
local_hub_prefix_next_hop=$hub1_azfw_private_ip
else
local_hub_prefix_next_hop=$hub1_nva_private_ip
fi
# bird.conf for hub1
bird_config_file=/tmp/bird.conf
cat <<EOF > $bird_config_file
log syslog all;
router id $hub1_nva_private_ip;
protocol device {
scan time 10;
}
protocol direct {
disabled;
}
protocol kernel {
export where source != RTS_STATIC;
}
protocol static {
route $hub1_rs_ip1/32 via $hub1_nva_default_gw;
route $hub1_rs_ip2/32 via $hub1_nva_default_gw;
route $hub2_lb_ip/32 via $hub1_nva_default_gw;
route $(get_1st_private_ip hub2nva1)/32 via $hub1_nva_default_gw;
$([[ "$nva_no" == "2" ]] && echo "route $(get_1st_private_ip hub2nva2)/32 via $hub1_nva_default_gw;" || echo "")
route 1${nva_id}.1${nva_id}.1${nva_id}.1${nva_id}/32 via $hub1_nva_default_gw; # Test route
$([[ "$use_vxlan" == "yes" && "$hub_no" == "2" ]] && echo "route $hub2_nva_overlay_ip/32 via \"vxlan0\";" || echo "")
$([[ "$nva_type" == "linux2nic" && "$hub_no" == "2" ]] && echo "route $hub2_nva_private_ip2/32 via $hub1_nva_default_gw2;" || echo "")
route $hub1_spoke_summary via $hub1_nva_default_gw;
}
template bgp PEERS {
local as $hub1_nva_asn;
multihop;
}
filter TO_RS {
# Accept test routes
if (net = 11.11.11.11/32) then { accept; }
if (net = 12.12.12.12/32) then { accept; }
if (net = 21.21.21.21/32) then { accept; }
if (net = 22.22.22.22/32) then { accept; }
# Drop other long prefixes (see /32 in static routes)
if ( net ~ [ 0.0.0.0/0{30,32} ] ) then { reject; }
# Optionally set next hop for local/remote hub prefixes as the LB
if (net = $hub1_spoke_summary) then
{
bgp_next_hop = $local_hub_prefix_next_hop;
accept;
}
if (net = $hub2_spoke_summary) then
{
bgp_next_hop = $local_hub_prefix_next_hop;
accept;
}
# Accept everything else
else {
bgp_path.delete(65515); # In case routes from a VNG arrive here
bgp_next_hop = $local_hub_prefix_next_hop;
accept;
}
}
filter TO_NVA {
# Accept test routes
if (net = 11.11.11.11/32) then { accept; }
if (net = 12.12.12.12/32) then { accept; }
if (net = 21.21.21.21/32) then { accept; }
if (net = 22.22.22.22/32) then { accept; }
# Drop other long prefixes (see /32 in static routes)
if ( net ~ [ 0.0.0.0/0{30,32} ] ) then { reject; }
# Drop prefixes originated by the local ARS (advertise only the self-generated summary)
if ( bgp_path ~ [= $hub1_nva_asn 65515 =] ) then { reject; }
# Accept everything else
else {
bgp_next_hop = $local_hub_prefix_next_hop;
accept;
}
}
protocol bgp rs0 from PEERS {
description "RouteServer instance 0";
neighbor $hub1_rs_ip1 as $hub1_rs_asn;
import all;
export filter TO_RS;
}
protocol bgp rs1 from PEERS {
description "RouteServer instance 1";
neighbor $hub1_rs_ip2 as $hub1_rs_asn;
import all;
export filter TO_RS;
}
protocol bgp hub2nva1 from PEERS {
description "Hub 2 NVA1";
$([[ "$use_vxlan" == "yes" && "$hub_no" == "2" ]] && echo "neighbor $hub2_nva_overlay_ip as $hub2_nva_asn;" || echo "")
$([[ "$use_vxlan" == "no" && "$hub_no" == "2" && "$nva_type" == "linux2nic" ]] && echo "neighbor $hub2_nva_private_ip2 as $hub2_nva_asn;" || echo "")
$([[ "$use_vxlan" == "no" && "$hub_no" == "2" && "$nva_type" == "linux1nic" ]] && echo "neighbor $(get_1st_private_ip hub2nva1) as $hub2_nva_asn;" || echo "")
import all;
export filter TO_NVA;
}
protocol bgp hub2nva2 from PEERS {
description "Hub 2 NVA2";
$([[ "$nva_no" == "1" ]] && echo "disabled;" || echo "# disabled")
$([[ "$use_vxlan" == "yes" && "$hub_no" == "2" ]] && echo "neighbor $hub2_nva_overlay_ip as $hub2_nva_asn;" || echo "")
$([[ "$use_vxlan" == "no" && "$hub_no" == "2" && "$nva_type" == "linux1nic" && "$nva_no" == "2" ]] && echo "neighbor $(get_1st_private_ip hub2nva2) as $hub2_nva_asn;" || echo "")
$([[ "$use_vxlan" == "no" && "$hub_no" == "2" && "$nva_type" == "linux1nic" && "$nva_no" == "1" ]] && echo "neighbor 1.2.3.4 as $hub2_nva_asn;" || echo "")
import all;
export filter TO_NVA;
}
EOF
hub1_nva_user=$(ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $hub1_nva_pip_ip "whoami")
echo "Uploading BIRD config file to ${hub1_nva_name}..."
scp $bird_config_file "${hub1_nva_pip_ip}:/home/${hub1_nva_user}/bird.conf"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $hub1_nva_pip_ip "sudo mv /home/${hub1_nva_user}/bird.conf /etc/bird/bird.conf"
ssh -n -o BatchMode=yes -o StrictHostKeyChecking=no $hub1_nva_pip_ip "sudo systemctl restart bird"
done
# hub2
for nva_id in $(seq 1 $nva_no)
do
# Get NVA Data
hub2_nva_name="hub2nva${nva_id}"
hub2_nva_pip="${hub2_nva_name}-pip"
echo "Getting $hub2_nva_name info..."
hub2_nva_pip_ip=$(az network public-ip show -n $hub2_nva_pip -g $rg --query ipAddress -o tsv)
hub2_nva_private_ip=$(get_1st_private_ip $hub2_nva_name)
hub2_nva_default_gw=$(first_ip "$hub2_nva_subnet_prefix")
if [[ "$nva_type" == "linux2nic" ]]
then
hub2_nva_private_ip2=$(az network nic show -n "${hub2_nva_name}-nic1" -g $rg --query 'ipConfigurations[0].privateIpAddress' -o tsv)
hub2_nva_default_gw2=$(first_ip "$hub2_nva_subnet2_prefix")
fi
# BGP next hop for the local hub prefix
if [[ "$next_hop" == "lb" ]]
then
local_hub_prefix_next_hop=$hub2_lb_ip
elif [[ "$next_hop" == "azfw" ]]
then
local_hub_prefix_next_hop=$hub2_azfw_private_ip
else
local_hub_prefix_next_hop=$hub2_nva_private_ip
fi
# bird.conf for hub2
bird_config_file=/tmp/bird.conf
cat <<EOF > $bird_config_file
log syslog all;
router id $hub2_nva_private_ip;
protocol device {
scan time 10;
}
protocol direct {
disabled;
}
protocol kernel {
export where source != RTS_STATIC;
}
protocol static {
route $hub2_rs_ip1/32 via $hub2_nva_default_gw;
route $hub2_rs_ip2/32 via $hub2_nva_default_gw;
route $hub1_lb_ip/32 via $hub2_nva_default_gw;
route $(get_1st_private_ip hub1nva1)/32 via $hub2_nva_default_gw;
$([[ "$nva_no" == "2" ]] && echo "route $(get_1st_private_ip hub1nva2)/32 via $hub2_nva_default_gw;" || echo "")
route 2${nva_id}.2${nva_id}.2${nva_id}.2${nva_id}/32 via $hub2_nva_default_gw; # Test route
$([[ "$use_vxlan" == "yes" && "$hub_no" == "2" ]] && echo "route $hub1_nva_overlay_ip/32 via \"vxlan0\";" || echo "")
$([[ "$nva_type" == "linux2nic" && "$hub_no" == "2" ]] && echo "route $hub1_nva_private_ip2/32 via $hub2_nva_default_gw2;" || echo "")
route $hub2_spoke_summary via $hub2_nva_default_gw;
}
filter TO_RS {
# Accept test route
if (net = 2${nva_id}.2${nva_id}.2${nva_id}.2${nva_id}/32) then { accept; }
# Drop other long prefixes (see /32 in static routes)
if ( net ~ [ 0.0.0.0/0{30,32} ] ) then { reject; }
# Optionally set next hop for local/remote hub prefixes as the LB
if (net = $hub1_spoke_summary) then
{
bgp_next_hop = $local_hub_prefix_next_hop;
accept;
}
if (net = $hub2_spoke_summary) then
{
bgp_next_hop = $local_hub_prefix_next_hop;
accept;
}
# Accept everything else
else {
bgp_path.delete(65515); # In case routes from a VNG arrive here
bgp_next_hop = $local_hub_prefix_next_hop;
accept;
}
}
filter TO_NVA {
# Accept test route
if (net = 2${nva_id}.2${nva_id}.2${nva_id}.2${nva_id}/32) then { accept; }
# Drop other long prefixes (see /32 in static routes)
if ( net ~ [ 0.0.0.0/0{30,32} ] ) then { reject; }
# Drop prefixes originated by the local ARS (advertise only the self-generated summary)
if ( bgp_path ~ [= $hub2_nva_asn 65515 =] ) then { reject; }
# Accept everything else
else {
bgp_next_hop = $local_hub_prefix_next_hop;
accept;
}
}
template bgp PEERS {
local as $hub2_nva_asn;
multihop;
}
protocol bgp rs0 from PEERS {
description "RouteServer instance 0";
neighbor $hub2_rs_ip1 as $hub2_rs_asn;
import all;
export filter TO_RS;
}
protocol bgp rs1 from PEERS {
description "RouteServer instance 1";
neighbor $hub2_rs_ip2 as $hub2_rs_asn;
import all;
export filter TO_RS;
}
protocol bgp hub1nva1 from PEERS {
description "Hub 1 NVA1";
$([[ "$use_vxlan" == "yes" && "$hub_no" == "2" ]] && echo "neighbor $hub1_nva_overlay_ip as $hub1_nva_asn;" || echo "")
$([[ "$use_vxlan" == "no" && "$hub_no" == "2" && "$nva_type" == "linux2nic" ]] && echo "neighbor $hub1_nva_private_ip2 as $hub1_nva_asn;" || echo "")
$([[ "$use_vxlan" == "no" && "$hub_no" == "2" && "$nva_type" == "linux1nic" ]] && echo "neighbor $(get_1st_private_ip hub1nva1) as $hub1_nva_asn;" || echo "")
import all;
export filter TO_NVA;
}
protocol bgp hub1nva2 from PEERS {
description "Hub 1 NVA2";
$([[ "$nva_no" == "1" ]] && echo "disabled;" || echo "# disabled")
$([[ "$use_vxlan" == "yes" && "$hub_no" == "2" ]] && echo "neighbor $hub1_nva_overlay_ip as $hub1_nva_asn;" || echo "")
$([[ "$use_vxlan" == "no" && "$hub_no" == "2" && "$nva_type" == "linux1nic" && "$nva_no" == "2" ]] && echo "neighbor $(get_1st_private_ip hub1nva2) as $hub1_nva_asn;" || echo "")
$([[ "$use_vxlan" == "no" && "$hub_no" == "2" && "$nva_type" == "linux1nic" && "$nva_no" == "1" ]] && echo "neighbor 1.2.3.4 as $hub1_nva_asn;" || echo "")
import all;
export filter TO_NVA;