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ndb_config
Langue: en
Version: 07/04/2007 (mandriva - 22/10/07)
Section: 1 (Commandes utilisateur)
NAME
ndb_config - extract NDB configuration informationSYNOPSIS
- ndb_config options
DESCRIPTION
- This tool extracts configuration information for data nodes, SQL nodes, and API nodes from a cluster management node (and possibly its config.ini file).
Usage:
-
ndb_config options
The options available for this utility differ somewhat from those used with the other utilities, and so are listed in their entirety in the next section, followed by some examples.
Options:
- •
- --usage, --help, or -?
Causes ndb_config to print a list of available options, and then exit.
- •
- --version, -V
Causes ndb_config to print a version information string, and then exit.
- •
- --ndb-connectstring=connect_string
Specifies the connectstring to use in connecting to the management server. The format for the connectstring is the same as described in Section 3.4.2, "The Cluster Connectstring", and defaults to localhost:1186.
The use of -c as a short version for this option is supported for ndb_config beginning with MySQL 5.0.29.
- •
- --config-file=path-to-file
Gives the path to the management server's configuration file (config.ini). This may be a relative or absolute path. If the management node resides on a different host from the one on which ndb_config is invoked, then an absolute path must be used.
- •
- --query=query-options, -q query-options
This is a comma-delimited list of query options --- that is, a list of one or more node attributes to be returned. These include id (node ID), type (node type --- that is, ndbd, mysqld, or ndb_mgmd), and any configuration parameters whose values are to be obtained.
For example, --query=id,type,indexmemory,datamemory would return the node ID, node type, DataMemory, and IndexMemory for each node.
Note: If a given parameter is not applicable to a certain type of node, than an empty string is returned for the corresponding value. See the examples later in this section for more information.
- •
- --host=hostname
Specifies the hostname of the node for which configuration information is to be obtained.
- •
- --id=node_id, --nodeid=node_id
Used to specify the node ID of the node for which configuration information is to be obtained.
- •
- --nodes
(Tells ndb_config to print information from parameters defined in [ndbd] sections only. Currently, using this option has no affect, since these are the only values checked, but it may become possible in future to query parameters set in [tcp] and other sections of cluster configuration files.)
- •
- --type=node_type
Filters results so that only configuration values applying to nodes of the specified node_type (ndbd, mysqld, or ndb_mgmd) are returned.
- •
- --fields=delimiter, -f delimiter
Specifies a delimiter string used to separate the fields in the result. The default is "," (the comma character).
Note: If the delimiter contains spaces or escapes (such as \n for the linefeed character), then it must be quoted.
- •
- --rows=separator, -r separator
Specifies a separator string used to separate the rows in the result. The default is a space character.
Note: If the separator contains spaces or escapes (such as \n for the linefeed character), then it must be quoted.
Examples:
- 1.
- To obtain the node ID and type of each node in the cluster:
-
shell> ./ndb_config --query=id,type --fields=':' --rows='\n' 1:ndbd 2:ndbd 3:ndbd 4:ndbd 5:ndb_mgmd 6:mysqld 7:mysqld 8:mysqld 9:mysqld
-
- 2.
- To produce a connectstring that can be used by data, SQL, and API nodes to connect to the management server:
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shell> ./ndb_config --config-file=usr/local/mysql/cluster-data/config.ini --query=hostname,portnumber --fields=: --rows=, --type=ndb_mgmd 192.168.0.179:1186
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- 3.
- This invocation of ndb_config checks only data nodes (using the --type option), and shows the values for each node's ID and hostname, and its DataMemory, IndexMemory, and DataDir parameters:
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shell> ./ndb_config --type=ndbd --query=id,host,datamemory,indexmemory,datadir -f ' : ' -r '\n' 1 : 192.168.0.193 : 83886080 : 18874368 : /usr/local/mysql/cluster-data 2 : 192.168.0.112 : 83886080 : 18874368 : /usr/local/mysql/cluster-data 3 : 192.168.0.176 : 83886080 : 18874368 : /usr/local/mysql/cluster-data 4 : 192.168.0.119 : 83886080 : 18874368 : /usr/local/mysql/cluster-data
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- 4.
- To exclude results from any host except one in particular, use the --host option:
-
shell> ./ndb_config --host=192.168.0.176 -f : -r '\n' -q id,type 3:ndbd 5:ndb_mgmd
Similarly, you can limit results to a node with a specific ID using the --id or --nodeid option.
-
COPYRIGHT
Copyright 1997-2007 MySQL AB
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SEE ALSO
For more information, please refer to the MySQL Reference Manual, which may already be installed locally and which is also available online at http://dev.mysql.com/doc/.AUTHOR
MySQL AB (http://www.mysql.com/). This software comes with no warranty.Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre