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• NO_CONTACT: The node cannot be contacted.

• UNKNOWN: The node can be contacted, but its status is not yet known. Usually, this means that the node has received aSTART orRESTART command from the management server, but has not yet acted on it.

• NOT_STARTED: The node has stopped, but remains in contact with the cluster. This is seen when restarting the node using the management client'sRESTART command.

• STARTING: The node'sndbd process has started, but the node has not yet joined the cluster.

• STARTED: The node is operational, and has joined the cluster.

• SHUTTING_DOWN: The node is shutting down.

• SINGLE USER MODE: This is shown for all cluster data nodes when the cluster is in single user mode.

Table 25.51 Command-line options used with the program ndb_waiter

• --character-sets-dir

  Command-Line Format	--character-sets-dir=path
  Removed	8.0.31

  Directory containing character sets.

• --connect-retries

  Command-Line Format	--connect-retries=#
  Type	Integer
  Default Value	12
  Minimum Value	0
  Maximum Value	12

  Number of times to retry connection before giving up.

• --connect-retry-delay

  Command-Line Format	--connect-retry-delay=#
  Type	Integer
  Default Value	5
  Minimum Value	0
  Maximum Value	5

  Number of seconds to wait between attempts to contact management server.

• --connect-string

  Command-Line Format	--connect-string=connection_string
  Type	String
  Default Value	[none]

  Same as--ndb-connectstring.

• --core-file

  Command-Line Format	--core-file
  Removed	8.0.31

  Write core file on error; used in debugging.

• --defaults-extra-file

  Command-Line Format	--defaults-extra-file=path
  Type	String
  Default Value	[none]

  Read given file after global files are read.

• --defaults-file

  Command-Line Format	--defaults-file=path
  Type	String
  Default Value	[none]

  Read default options from given file only.

• --defaults-group-suffix

  Command-Line Format	--defaults-group-suffix=string
  Type	String
  Default Value	[none]

  Also read groups with concat(group, suffix).

• --login-path

  Command-Line Format	--login-path=path
  Type	String
  Default Value	[none]

  Read given path from login file.

• --help

  Command-Line Format	--help

  Display help text and exit.

• --ndb-connectstring

  Command-Line Format	--ndb-connectstring=connection_string
  Type	String
  Default Value	[none]

  Set connect string for connecting to ndb_mgmd. Syntax: "[nodeid=id;][host=]hostname[:port]". Overrides entries in NDB_CONNECTSTRING and my.cnf.

• --ndb-mgmd-host

  Command-Line Format	--ndb-mgmd-host=connection_string
  Type	String
  Default Value	[none]

  Same as --ndb-connectstring.

• --ndb-nodeid

  Command-Line Format	--ndb-nodeid=#
  Removed	8.0.31
  Type	Integer
  Default Value	[none]

  Set node ID for this node, overriding any ID set by--ndb-connectstring.

• --ndb-optimized-node-selection

  Command-Line Format	--ndb-optimized-node-selection
  Removed	8.0.31

  Enable optimizations for selection of nodes for transactions. Enabled by default; use--skip-ndb-optimized-node-selection to disable.

• --no-contact,-n

  Instead of waiting for theSTARTED state,ndb_waiter continues running until the cluster reachesNO_CONTACT status before exiting.

• --no-defaults

  Command-Line Format	--no-defaults

  Do not read default options from any option file other than login file.

• --not-started

  Instead of waiting for theSTARTED state,ndb_waiter continues running until the cluster reachesNOT_STARTED status before exiting.

• --nowait-nodes=list

  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:

  $> ndb_waiter --nowait-nodes=1,3,7-9

  Important

  Donot use this option together with the--wait-nodes option.

• --print-defaults

  Command-Line Format	--print-defaults

  Print program argument list and exit.

• --timeout=seconds,-tseconds

  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).

• --single-user

  The program waits for the cluster to enter single user mode.

• --usage

  Command-Line Format	--usage

  Display help text and exit; same as--help.

• --verbose

  Command-Line Format	--verbose=#
  Introduced	8.0.37
  Type	Integer
  Default Value	2
  Minimum Value	0
  Maximum Value	2

  Controls verbosity level of printout. Possible levels and their effects are listed here:

  • 0: Do not print (return exit code only; see following for exit codes).

  • 1: Print final connection status only.

  • 2: Print status each time it is checked.

    This is the same behavior as in versions of NDB Cluster previous to 8.4.

  Exit codes returned byndb_waiter are listed here, with their meanings:

  • 0: Success.

  • 1: Wait timed out.

  • 2: Parameter error, such as an invalid node ID.

  • 3: Failed to connect to the management server.

• --version

  Command-Line Format	--version

  Display version information and exit.

• --wait-nodes=list,-wlist

  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:

  $> ndb_waiter --wait-nodes=2,4-6,10

  Important

  Donot use this option together with the--nowait-nodes option.

If no connection string is specified, thenndb_waiter tries to connect to a management onlocalhost, and reportsConnecting to mgmsrv at (null).