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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.

• --character-sets-dir

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

  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

  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.

• --no-login-paths

  Command-Line Format	--no-login-paths

  Skips reading options from the login path 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 connection string for connecting tondb_mgmd. Syntax:[nodeid=id;][host=]hostname[:port]. Overrides entries inNDB_CONNECTSTRING andmy.cnf.

• --ndb-mgm-tls

  Command-Line Format	--ndb-mgm-tls=level
  Type	Enumeration
  Default Value	relaxed
  Valid Values	relaxed strict

  Sets the level of TLS support required to connect to the management server; one ofrelaxed orstrict.relaxed (the default) means that a TLS connection is attempted, but success is not required;strict means that TLS is required to connect.

• --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=#
  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

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

• --ndb-tls-search-path

  Command-Line Format	--ndb-tls-search-path=list
  Type	Path name
  Default Value (Unix)	$HOME/ndb-tls
  Default Value (Windows)	$HOMEDIR/ndb-tls

  Specify a list of directories to search for a CA file. On Unix platforms, the directory names are separated by colons (:); on Windows systems, the semicolon character (;) is used as the separator. A directory reference may be relative or absolute; it may contain one or more environment variables, each denoted by a prefixed dollar sign ($), and expanded prior to use.

  Searching begins with the leftmost named directory and proceeds from left to right until a file is found. An empty string denotes an empty search path, which causes all searches to fail. A string consisting of a single dot (.) indicates that the search path limited to the current working directory.

  If no search path is supplied, the compiled-in default value is used. This value depends on the platform used: On Windows, this is\ndb-tls; on other platforms (including Linux), it is$HOME/ndb-tls. This can be overridden by compiling NDB Cluster using-DWITH_NDB_TLS_SEARCH_PATH.

• --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=#
  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).