```release-note:change
api: Add to sys/health whether the node has been removed from the HA cluster. If the node has been removed, return code 530 by default or the value of the `removedcode` query parameter.   
```
```release-note:change
api: Add to sys/health whether the standby node has been able to successfully send heartbeats to the active node and the time in milliseconds since the last heartbeat. If the standby has been unable to send a heartbeat, return code 474 by default or the value of the `haunhealthycode` query parameter.    
```
