21.4.17 ndb_perror — Obtain NDB Error Message Information
ndb_perror shows information about an NDB error, given its error code. This includes the error message, the type of error, and whether the error is permanent or temporary. Added to the MySQL NDB Cluster distribution in NDB 7.6.4, it is intended as a drop-in replacement for perror --ndb
.
Usage
ndb_perror [options] error_code
ndb_perror does not need to access a running NDB Cluster, or any nodes (including SQL nodes). To view information about a given NDB error, invoke the program, using the error code as an argument, like this:
shell> ndb_perror 323
NDB error code 323: Invalid nodegroup id, nodegroup already existing: Permanent error: Application error
To display only the error message, invoke ndb_perror with the --silent
option (short form -s
), as shown here:
shell> ndb_perror -s 323
Invalid nodegroup id, nodegroup already existing: Permanent error: Application error
Like perror, ndb_perror accepts multiple error codes:
shell> ndb_perror 321 1001
NDB error code 321: Invalid nodegroup id: Permanent error: Application error
NDB error code 1001: Illegal connect string
Additional program options for ndb_perror are described later in this section.
ndb_perror replaces perror --ndb
, which is deprecated as of NDB 7.6.4 and subject to removal in a future release of MySQL NDB Cluster. To make substitution easier in scripts and other applications that might depend on perror for obtaining NDB error information, ndb_perror supports its own “dummy” --ndb
option, which does nothing.
The following table includes all options that are specific to the NDB Cluster program ndb_perror. Additional descriptions follow the table.
Table 21.253 Command-line options for the ndb_perror program
Format | Description | Added, Deprecated, or Removed |
---|---|---|
Display help text | ADDED: NDB 7.6.4 |
|
For compatibility with applications depending on old versions of perror; does nothing | ADDED: NDB 7.6.4 |
|
Show error message only | ADDED: NDB 7.6.4 |
|
Print program version information and exit | ADDED: NDB 7.6.4 |
|
Verbose output; disable with --silent | ADDED: NDB 7.6.4 |
Additional Options
-
Property Value Command-Line Format --help
Introduced 5.7.19-ndb-7.6.4 Type Boolean Default Value TRUE
Display program help text and exit.
-
Property Value Command-Line Format --ndb
Introduced 5.7.19-ndb-7.6.4 Type Boolean Default Value TRUE
For compatibility with applications depending on old versions of perror that use that program's
--ndb
option. The option when used with ndb_perror does nothing, and is ignored by it. -
Property Value Command-Line Format --silent
Introduced 5.7.19-ndb-7.6.4 Type Boolean Default Value TRUE
Show error message only.
-
Property Value Command-Line Format --version
Introduced 5.7.19-ndb-7.6.4 Type Boolean Default Value TRUE
Print program version information and exit.
-
Property Value Command-Line Format --verbose
Introduced 5.7.19-ndb-7.6.4 Type Boolean Default Value TRUE
Verbose output; disable with
--silent
.