MySQL 8.0 Reference Manual Including MySQL NDB Cluster 8.0
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. This is intended as a drop-in replacement for
perror --ndb
,
which is no longer supported.
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 no longer supported by 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 23.38 Command-line options used with the program ndb_perror
Format | Description | Added, Deprecated, or Removed |
---|---|---|
Display help text | (Supported in all NDB releases based on MySQL 8.0) |
|
For compatibility with applications depending on old versions of perror; does nothing | (Supported in all NDB releases based on MySQL 8.0) |
|
Show error message only | (Supported in all NDB releases based on MySQL 8.0) |
|
Print program version information and exit | (Supported in all NDB releases based on MySQL 8.0) |
|
Verbose output; disable with --silent | (Supported in all NDB releases based on MySQL 8.0) |
Command-Line Format | --help |
---|---|
Type | Boolean |
Default Value | TRUE |
Display program help text and exit.
Command-Line Format | --ndb |
---|---|
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.
Command-Line Format | --silent |
---|---|
Type | Boolean |
Default Value | TRUE |
Show error message only.
Command-Line Format | --version |
---|---|
Type | Boolean |
Default Value | TRUE |
Print program version information and exit.
Command-Line Format | --verbose |
---|---|
Type | Boolean |
Default Value | TRUE |
Verbose output; disable with
--silent
.