NDB Cluster Log Messages Log Message Description Event Name Event Type Priority Severity to Node api_node_id opened api_node_id is now communicating with data node data_node_id . Node mgm_node_id : Node api_node_id : API  version The API node having node ID api_node_id has connected to management node mgm_node_id using  NDB API version version (generally the same as the MySQL version number). ConnectedApiVersion Connection 8 INFO Node node_id : Global checkpoint gci  started A global checkpoint with the ID  gci  has been started; node  node_id is the master responsible for this global checkpoint. GlobalCheckpointStarted Checkpoint 9 INFO Node node_id : Global checkpoint gci completed The global checkpoint having the ID gci  has been completed; node  node_id was the master responsible for this global checkpoint. GlobalCheckpointCompleted Checkpoint 10 INFO Node node_id : Local checkpoint lcp  started. Keep GCI = current_gci oldest restorable GCI = old_gci The local checkpoint having sequence ID lcp  has been started on node node_id . The most recent GCI that can be used has the index current_gci , and the oldest GCI from which LocalCheckpointStarted Checkpoint 7 INFO 4445