Bamboo has two endpoint to place Bamboo in maintenance mode:

1. http://myhost.com:8085/rest/api/latest/server/pause [POST]
   • While running PAUSE, Bamboo will wait for builds to complete (InProgress state) before placing Bamboo into PAUSED state
   • Builds are prevented from being queued
   • Bamboo can be resumed http://myhost.com:8085/rest/api/latest/server/resume [POST]
2. http://myhost.com:8085/rest/api/latest/server/prepareForRestart [PUT]
   • Prepare server for restarting: suspend change detection, stop indexing, stop ec2 instance ordering
   • Builds that were Queued will change status to NotBuilt upon Bamboo's restart
   • Builds that were InProgress will change status to NotBuilt upon Bamboo's restart
   • Builds are prevented from being queued
   • Bamboo must be restarted, it cannot be resumed

Regardless the chosen endpoint, Bamboo should allow builds to continue on being queue instead of allowing it only after resume or restart.