Hi, Is there any way to use OpenStack API to change admin (root) password on already running instance ? Which special configuration should be done on compute node or controller or basic image to make it work ? I've tried to run curl -v -H 'X-Auth-Token: 3d9bd4afb993447d8a428d2ec10fcf11' -H "Content-Type: application/json" -H "Accept: application/json" -X POST " http://localhost:8774/v2.0/3bb69a4204334bfc98e0199cb33000ea/servers/c7108f77-98e7-4fd2-b53d-b1e1f36fde40/action " -d '{"changePassword":{"adminPass":"welcome"}}' And I'm getting HTTP 202 which seems to be ok. But actually the root password of the instance was not changed. Thank you. Alexandra Kisin Servers & Network group, IBM R&D Labs in Israel Unix & Virtualization Team