maas_update_oam_route.sh

#!/bin/bash
# Fetch machines
echo "=== Fetching machines (excluding vms) ==="
ALL_MACHINES=$(maas root machines read | jq -r '.[] | select(.virtualmachine_id==null) | .system_id')
echo "====================================="

# Check what is the current default route
echo "=== Printing the current gateways before change ==="
maas root machines read | jq -r '.[] | select(.virtualmachine_id==null) | [.hostname,.default_gateways.ipv4.gateway_ip] | join(" ")';
echo "====================================="

## Iterate over all machines and update default route to OAM
echo "=== Interating over the machines and updating default route ==="
for SYSTEM_ID in $ALL_MACHINES; do
  BOND_OAM_LINK=$(maas root machine read $SYSTEM_ID | jq '.interface_set[] | select(.type=="bond"  and .name=="bondM") | .id')
  echo -n "machine ${SYSTEM_ID} setting the gateway by interface id ${BOND_OAM_LINK}: "
  RESULT="$(maas root interface set-default-gateway $SYSTEM_ID ${BOND_OAM_LINK})"
  [[ "$?" == "0" ]] && echo OK || echo "FAIL $RESULT"
done
echo "====================================="

# Check what is the current default route
echo "=== Printing the current gateways after change ==="
maas root machines read | jq -r '.[] | select(.virtualmachine_id==null) | [.hostname,.default_gateways.ipv4.gateway_ip] | join(" ")';
echo "====================================="