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MySQL 8.2 Reference Manual  /  ...  /  ndb_print_backup_file — Print NDB Backup File Contents

23.5.17 ndb_print_backup_file — Print NDB Backup File Contents

ndb_print_backup_file obtains diagnostic information from a cluster backup file.

Usage

ndb_print_backup_file [-P password] file_name

file_name is the name of a cluster backup file. This can be any of the files (.Data, .ctl, or .log file) found in a cluster backup directory. These files are found in the data node's backup directory under the subdirectory BACKUP-#, where # is the sequence number for the backup. For more information about cluster backup files and their contents, see Section 23.6.8.1, “NDB Cluster Backup Concepts”.

Like ndb_print_schema_file and ndb_print_sys_file (and unlike most of the other NDB utilities that are intended to be run on a management server host or to connect to a management server) ndb_print_backup_file must be run on a cluster data node, since it accesses the data node file system directly. Because it does not make use of the management server, this utility can be used when the management server is not running, and even when the cluster has been completely shut down.

This program can also be used to read undo log files.

Options

ndb_print_backup_file supports the options described in the following list.

  • --backup-key, -K

    Command-Line Format --backup-key=key

    Specify the key needed to decrypt an encrypted backup.

  • --backup-key-from-stdin

    Command-Line Format --backup-key-from-stdin

    Allow input of the decryption key from standard input, similar to entering a password after invoking mysql --password with no password supplied.

  • --backup-password

    Command-Line Format --backup-password=password
    Type String
    Default Value [none]

    Specify the password needed to decrypt an encrypted backup.

  • --backup-password-from-stdin

    Command-Line Format --backup-password-from-stdin

    Allow input of the password from standard input, similar to entering a password after invoking mysql --password with no password supplied.

  • --control-directory-number

    Command-Line Format --control-directory-number=#
    Type Integer
    Default Value 0

    Control file directory number. Used together with --print-restored-rows.

  • --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).

  • --fragment-id

    Command-Line Format --fragment-id=#
    Type Integer
    Default Value 0

    Fragment ID. Used together with --print-restored-rows.

  • --help

    Command-Line Format

    --help

    --usage

    Print program usage information.

  • --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.

  • --no-defaults

    Command-Line Format --no-defaults

    Do not read default options from any option file other than login file.

  • --no-print-rows

    Command-Line Format --no-print-rows

    Do not include rows in output.

  • --print-defaults

    Command-Line Format --print-defaults

    Print program argument list and exit.

  • --print-header-words

    Command-Line Format --print-header-words

    Include header words in output.

  • --print-restored-rows

    Command-Line Format --print-restored-rows

    Include restored rows in output, using the file LCP/c/TtFf.ctl, for which the values are set as follows:

  • --print-rows

    Command-Line Format --print-rows

    Print rows. This option is enabled by default; to disable it, use --no-print-rows.

  • --print-rows-per-page

    Command-Line Format --print-rows-per-page

    Print rows per page.

  • --rowid-file

    Command-Line Format --rowid-file=path
    Type File name
    Default Value [none]

    File to check for row ID.

  • --show-ignored-rows

    Command-Line Format --show-ignored-rows

    Show ignored rows.

  • --table-id

    Command-Line Format --table-id=#
    Type Integer
    Default Value [none]

    Table ID. Used together with --print-restored-rows.

  • --usage

    Command-Line Format --usage

    Display help text and exit; same as --help.

  • --verbose

    Command-Line Format --verbose[=#]
    Type Integer
    Default Value 0

    Verbosity level of output. A greater value indicates increased verbosity.

  • --version

    Command-Line Format --version

    Display version information and exit.