25.5.16 ndb_perror — 获取 NDB 错误消息信息
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:
$> 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:
$> ndb_perror -s 323
Invalid nodegroup id, nodegroup already existing: Permanent error: Application error
Like perror, ndb_perror accepts multiple error codes:
$> 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.
-
Command-Line Format --defaults-extra-file=path
Type String Default Value [none]
Read given file after global files are read.
-
Command-Line Format --defaults-file=path
Type String Default Value [none]
Read default options from given file only.
-
Command-Line Format --defaults-group-suffix=string
Type String Default Value [none]
Also read groups with concat(group, suffix).
-
--help
,-?
Command-Line Format --help
Display program help text and exit.
-
Command-Line Format --login-path=path
Type String Default Value [none]
Read given path from login file.
-
Command-Line Format --no-login-paths
Skips reading options from the login path file.
-
Command-Line Format --ndb
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 --no-defaults
Do not read default options from any option file other than login file.
-
Command-Line Format --print-defaults
Print program argument list and exit.
-
--silent
,-s
Command-Line Format --silent
Show error message only.
-
--version
,-V
Command-Line Format --version
Print program version information and exit.
-
--verbose
,-v
Command-Line Format --verbose
Verbose output; disable with
--silent
.