You mean that the HA stack does this automatically?
Not on current PVE3.4, AFAIK, you need to secure that the service may be stolen safely from the lost node, and fencing is needed for this.
With PVE4 this is a lot easier as it uses watchdog based self fencing, which works out of the box on any hardware (hardware based watchdog is preferred though, else it defaults to the Linux kernel softdog, which is reliable but at the end it's still software).
You can move the service manually, if your sure the other node is dead and doesn't provides the services anymore/has access to shared resources.
Just move the config file for that purpose.