25.5.32 ndbxfrm — Compress, Decompress, Encrypt, and Decrypt Files Created by NDB Cluster

The ndbxfrm utility can be used to decompress, decrypt, and output information about files created by NDB Cluster that are compressed, encrypted, or both. It can also be used to compress or encrypt files.

Usage

ndbxfrm --info file[ file ...]

ndbxfrm --compress input_file output_file

ndbxfrm --decrypt-password=password input_file output_file

ndbxfrm [--encrypt-ldf-iter-count=#] --encrypt-password=password input_file output_file

input_file and output_file cannot be the same file.

Options

--compress, -c
Command-Line Format --compress
Compresses the input file, using the same compression method as is used for compressing NDB Cluster backups, and writes the output to an output file. To decompress a compressed NDB backup file that is not encrypted, it is necessary only to invoke ndbxfrm using the names of the compressed file and an output file (with no options required).
--decrypt-key=key, -K key
Command-Line Format --decrypt-key=key
Decrypts a file encrypted by NDB using the supplied key.
Note
This option cannot be used together with --decrypt-password.
--decrypt-key-from-stdin
Command-Line Format --decrypt-key-from-stdin
Decrypts a file encrypted by NDB using the key supplied from stdin.
--decrypt-password=password
Command-Line Format --decrypt-password=password
Type String
Default Value [none]
Decrypts a file encrypted by NDB using the password supplied.
Note
This option cannot be used together with --decrypt-key.
--decrypt-password-from-stdin[=TRUE|FALSE]
Command-Line Format --decrypt-password-from-stdin
Decrypts a file encrypted by NDB, using a password supplied from standard input. This is similar to entering a password after invoking mysql --password with no password following the option.
--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).

Command-Line Format	`--compress`

Command-Line Format	`--decrypt-key=key`

Command-Line Format	`--decrypt-key-from-stdin`

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

Command-Line Format	`--decrypt-password-from-stdin`

Command-Line Format	`--defaults-extra-file=path`
Type	String
Default Value	`[none]`

Command-Line Format	`--defaults-file=path`
Type	String
Default Value	`[none]`

Command-Line Format	`--defaults-group-suffix=string`
Type	String
Default Value	`[none]`

--detailed-info

Command-Line Format	`--encrypt-block-size=#`
Type	Boolean
Default Value	`FALSE`

Print out file information like --info, but include the file's header and trailer.

Example:

$> ndbxfrm --detailed-info S0.sysfile
File=/var/lib/cluster-data/ndb_7_fs/D1/NDBCNTR/S0.sysfile, compression=no, encryption=yes
header: {
  fixed_header: {
    magic: {
      magic: { 78, 68, 66, 88, 70, 82, 77, 49 },
      endian: 18364758544493064720,
      header_size: 32768,
      fixed_header_size: 160,
      zeros: { 0, 0 }
    },
    flags: 73728,
    flag_extended: 0,
    flag_zeros: 0,
    flag_file_checksum: 0,
    flag_data_checksum: 0,
    flag_compress: 0,
    flag_compress_method: 0,
    flag_compress_padding: 0,
    flag_encrypt: 18,
    flag_encrypt_cipher: 2,
    flag_encrypt_krm: 1,
    flag_encrypt_padding: 0,
    flag_encrypt_key_selection_mode: 0,
    dbg_writer_ndb_version: 524320,
    octets_size: 32,
    file_block_size: 32768,
    trailer_max_size: 80,
    file_checksum: { 0, 0, 0, 0 },
    data_checksum: { 0, 0, 0, 0 },
    zeros01: { 0 },
    compress_dbg_writer_header_version: { ... },
    compress_dbg_writer_library_version: { ... },
    encrypt_dbg_writer_header_version: { ... },
    encrypt_dbg_writer_library_version: { ... },
    encrypt_key_definition_iterator_count: 100000,
    encrypt_krm_keying_material_size: 32,
    encrypt_krm_keying_material_count: 1,
    encrypt_key_data_unit_size: 32768,
    encrypt_krm_keying_material_position_in_octets: 0,
  },
  octets: {
     102, 68, 56, 125, 78, 217, 110, 94, 145, 121, 203, 234, 26, 164, 137, 180,
     100, 224, 7, 88, 173, 123, 209, 110, 185, 227, 85, 174, 109, 123, 96, 156,
  }
}
trailer: {
  fixed_trailer: {
    flags: 48,
    flag_extended: 0,
    flag_zeros: 0,
    flag_file_checksum: 0,
    flag_data_checksum: 3,
    data_size: 512,
    file_checksum: { 0, 0, 0, 0 },
    data_checksum: { 226, 223, 102, 207 },
    magic: {
      zeros: { 0, 0 }
      fixed_trailer_size: 56,
      trailer_size: 32256,
      endian: 18364758544493064720,
      magic: { 78, 68, 66, 88, 70, 82, 77, 49 },
    },
  }
}

--encrypt-block-size=#
Command-Line Format --encrypt-block-size=#
Type Integer
Default Value 0
Minimum Value 0
Maximum Value 2147483647
Size of input data chunks that are encrypted as a unit. Used with XTS; set to 0 (the default) for CBC mode.
--encrypt-cipher=#
Command-Line Format --encrypt-cipher=#
Type Integer
Default Value 1
Minimum Value 0
Maximum Value 2147483647
Cipher used for encryption. Set to 1 for CBC mode (the default), or 2 for XTS.
--encrypt-kdf-iter-count=#, -k #
Command-Line Format --encrypt-kdf-iter-count=#
Type Integer
Default Value 0
Minimum Value 0
Maximum Value 2147483647
When encrypting a file, specifies the number of iterations to use for the encryption key. Requires the --encrypt-password option.
--encrypt-key=key
Command-Line Format --encrypt-key=key
Encrypts a file using the supplied key.
Note
This option cannot be used together with --encrypt-password.
--encrypt-key-from-stdin
Command-Line Format --encrypt-key-from-stdin
Encrypt a file using the key supplied from stdin.
--encrypt-password=password
Command-Line Format --encrypt-password=password
Type String
Default Value [none]
Encrypts the backup file using the password supplied by the option. The password must meet the requirements listed here:
- Uses any of the printable ASCII characters except !, ', ", $, %, \, `, and ^
- Is no more than 256 characters in length
- Is enclosed by single or double quotation marks
Note
This option cannot be used together with --encrypt-key.
--encrypt-password-from-stdin[=TRUE|FALSE]
Command-Line Format --encrypt-password-from-stdin
Encrypts a file using a password supplied from standard input. This is similar to entering a password is entered after invoking mysql --password with no password following the option.
--help, -?
Command-Line Format --help
Prints usage information for the program.
--info, -i
Command-Line Format --info
Prints the following information about one or more input files:
- The name of the file
- Whether the file is compressed (compression=yes or compression=no)
- Whether the file is encrypted (encryption=yes or encryption=no)
Example:
```
$> ndbxfrm -i BACKUP-10-0.5.Data BACKUP-10.5.ctl BACKUP-10.5.log
File=BACKUP-10-0.5.Data, compression=no, encryption=yes
File=BACKUP-10.5.ctl, compression=no, encryption=yes
File=BACKUP-10.5.log, compression=no, encryption=yes
```
You can also see the file's header and trailer using the --detailed-info option.
--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.
--print-defaults
Command-Line Format --print-defaults
Print program argument list and exit.
--usage, -?
Command-Line Format --usage
Synonym for --help.
--version, -V
Command-Line Format --version
Prints out version information.

Command-Line Format	`--encrypt-cipher=#`
Type	Integer
Default Value	`1`
Minimum Value	`0`
Maximum Value	`2147483647`

Command-Line Format	`--encrypt-kdf-iter-count=#`
Type	Integer
Default Value	`0`
Minimum Value	`0`
Maximum Value	`2147483647`

Command-Line Format	`--encrypt-key=key`

Command-Line Format	`--encrypt-key-from-stdin`

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

Command-Line Format	`--encrypt-password-from-stdin`

Command-Line Format	`--help`

Command-Line Format	`--info`

Command-Line Format	`--login-path=path`
Type	String
Default Value	`[none]`

Command-Line Format	`--no-login-paths`

Command-Line Format	`--no-defaults`

Command-Line Format	`--print-defaults`

Command-Line Format	`--usage`

Command-Line Format	`--version`

ndbxfrm can encrypt backups created by any version of NDB Cluster. The .Data, .ctl, and .log files comprising the backup must be encrypted separately, and these files must be encrypted separately for each data node. Once encrypted, such backups can be decrypted only by ndbxfrm, ndb_restore, or ndb_print_backup.

An encrypted file can be re-encrypted with a new password using the --encrypt-password and --decrypt-password options together, like this:

ndbxfrm --decrypt-password=old --encrypt-password=new input_file output_file

In the example just shown, old and new are the old and new passwords, respectively; both of these must be quoted. The input file is decrypted and then encrypted as the output file. The input file itself is not changed; if you do not want it to be accessible using the old password, you must remove the input file manually.