ndb_waiter — Wait for NDB Cluster to Reach a Given Status When this option is used,  ndb_waiter  does not wait for the nodes whose IDs are listed. The list is comma-delimited; ranges can be indicated by dashes, as shown here: Do  not  use this option together with the  --wait-nodes  option. Print program argument list and exit. Time to wait. The program exits if the desired state is not achieved within this number of seconds. The default is 120 seconds (1200 reporting cycles). The program waits for the cluster to enter single user mode. Display help text and exit; same as  --help . Display version information and exit. When this option is used,  ndb_waiter  waits only for the nodes whose IDs are listed. The list is comma- delimited; ranges can be indicated by dashes, as shown here: Do  not  use this option together with the  --nowait-nodes  option. Sample Output.   Shown here is the output from  ndb_waiter  when run against a 4-node cluster in which two nodes have been shut down and then started again manually. Duplicate reports (indicated by ... ) are omitted. 4433 • --nowait-nodes= list • --print-defaults • --timeout= seconds ,  -t  seconds • --single-user • --usage • --version • --wait-nodes= list ,  -w  list shell>  ndb_waiter --nowait-nodes=1,3,7-9 shell>  ndb_waiter --wait-nodes=2,4-6,10 shell>  ./ndb_waiter -c localhost Connecting to mgmsrv at (localhost) State node 1 STARTED Important Important Command-Line Format --print-defaults Command-Line Format --usage Command-Line Format --version