635 lines
19 KiB
Groff
635 lines
19 KiB
Groff
.\" Man page generated from reStructuredText.
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.
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.TH "MONGOEXPORT" "1" "March 18, 2014" "2.6" "mongodb-manual"
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.SH NAME
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mongoexport \- MongoDB Export Utility
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.
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.nr rst2man-indent-level 0
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. RE
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..
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.SH SYNOPSIS
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.sp
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\fBmongoexport\fP is a utility that produces a JSON or CSV export
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of data stored in a MongoDB instance. See the
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http://docs.mongodb.org/manual/core/import\-export document for a more in depth
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usage overview, and the \fBmongoimport\fP document for more
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information regarding the \fBmongoimport\fP utility, which
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provides the inverse "importing" capability.
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.SH CONSIDERATIONS
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.sp
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Do not use \fBmongoimport\fP and \fBmongoexport\fP for
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full\-scale production backups because they may not reliably capture
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data type information. Use \fBmongodump\fP and
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\fBmongorestore\fP as described in http://docs.mongodb.org/manual/core/backups for this
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kind of functionality.
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.SH OPTIONS
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.INDENT 0.0
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.TP
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.B mongoexport
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.UNINDENT
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.INDENT 0.0
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.TP
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.B mongoexport
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-help, \-h
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Returns information on \fBmongoexport\fP options and usage.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-verbose, \-v
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Increases the amount of internal reporting returned on standard output
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or in log files. Increase the verbosity with the \fB\-v\fP form by
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including the option multiple times, (e.g. \fB\-vvvvv\fP\&.)
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-quiet
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Runs \fBmongoexport\fP in a quiet mode that attempts to limit the amount of
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output. This option suppresses:
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.INDENT 7.0
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.IP \(bu 2
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output from \fIdatabase commands\fP
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.IP \(bu 2
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replication activity
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.IP \(bu 2
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connection accepted events
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.IP \(bu 2
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connection closed events
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.UNINDENT
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-version
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Returns the \fBmongoexport\fP release number.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-host <hostname><:port>, \-h
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Specifies a resolvable hostname for the \fBmongod\fP to which to
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connect. By default \fBmongoexport\fP attempts to connect to a MongoDB instance
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running on the localhost on port number \fB27017\fP\&.
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.sp
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To connect to a replica set, specify the replica set seed name and the
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seed list of set members. Use the following format:
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.INDENT 7.0
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.INDENT 3.5
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.sp
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.nf
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.ft C
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<replica_set_name>/<hostname1><:port>,<hostname2:<port>,...
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.ft P
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.fi
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.UNINDENT
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.UNINDENT
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.sp
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You can always connect directly to a single MongoDB instance by
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specifying the host and port number directly.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-port <port>
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Specifies the port number when the MongoDB instance is not running on the
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standard port of \fB27017\fP\&. You may also specify the port number
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using the \fB\-\-host\fP option.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-ipv6
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Enables IPv6 support, which allows \fBmongoexport\fP to connect to the MongoDB
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instance using an IPv6 network. All MongoDB programs and processes,
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including \fBmongoexport\fP, disable IPv6 support by default.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-ssl
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New in version 2.6.
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.sp
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Enables connection to a \fBmongod\fP or \fBmongos\fP that has
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SSL support enabled.
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.sp
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The default distribution of MongoDB does not contain support for SSL.
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For more information on MongoDB and SSL, see http://docs.mongodb.org/manual/tutorial/configure\-ssl\&.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-sslCAFile <filename>
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New in version 2.6.
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.sp
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Specifies the \fB\&.pem\fP file that contains the root certificate chain
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from the Certificate Authority. Specify the file name of the
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\fB\&.pem\fP file using relative or absolute paths.
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.sp
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The default distribution of MongoDB does not contain support for SSL.
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For more information on MongoDB and SSL, see http://docs.mongodb.org/manual/tutorial/configure\-ssl\&.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-sslPEMKeyFile <filename>
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New in version 2.6.
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.sp
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Specifies the \fB\&.pem\fP file that contains both the SSL certificate
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and key. Specify the file name of the \fB\&.pem\fP file using relative
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or absolute paths.
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.sp
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This option is required when using the \fI\-\-ssl\fP option to connect
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to a \fBmongod\fP or \fBmongos\fP that has
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\fBsslCAFile\fP enabled \fIwithout\fP
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\fBsslWeakCertificateValidation\fP\&.
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.sp
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The default distribution of MongoDB does not contain support for SSL.
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For more information on MongoDB and SSL, see http://docs.mongodb.org/manual/tutorial/configure\-ssl\&.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-sslPEMKeyPassword <value>
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New in version 2.6.
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.sp
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Specifies the password to de\-crypt the certificate\-key file (i.e.
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\fI\-\-sslPEMKeyFile\fP). Use \fI\-\-sslPEMKeyPassword\fP only if
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the certificate\-key file is encrypted. In all cases, \fBmongoexport\fP will
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redact the password from all logging and reporting output.
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.sp
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If the private key in the PEM file is encrypted and you do not specify
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\fI\-\-sslPEMKeyPassword\fP, \fBmongoexport\fP will prompt for a passphrase.
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See \fIssl\-certificate\-password\fP\&.
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.sp
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The default distribution of MongoDB does not contain support for SSL.
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For more information on MongoDB and SSL, see http://docs.mongodb.org/manual/tutorial/configure\-ssl\&.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-sslCRLFile <filename>
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New in version 2.6.
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.sp
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Specifies the \fB\&.pem\fP file that contains the Certificate Revocation
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List. Specify the file name of the \fB\&.pem\fP file using relative or
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absolute paths.
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.sp
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The default distribution of MongoDB does not contain support for SSL.
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For more information on MongoDB and SSL, see http://docs.mongodb.org/manual/tutorial/configure\-ssl\&.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-sslAllowInvalidCertificates
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New in version 2.6.
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.sp
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Bypasses the validation checks for server certificates and allows
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the use of invalid certificates. When using the
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\fBsslAllowInvalidCertificates\fP setting, MongoDB logs as a
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warning the use of the invalid certificate.
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.sp
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The default distribution of MongoDB does not contain support for SSL.
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For more information on MongoDB and SSL, see http://docs.mongodb.org/manual/tutorial/configure\-ssl\&.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-sslFIPSMode
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New in version 2.6.
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.sp
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Directs \fBmongoexport\fP to use the FIPS mode of the installed OpenSSL
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library. Your system must
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have a FIPS compliant OpenSSL library to use \fI\-\-sslFIPSMode\fP\&.
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.sp
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The default distribution of MongoDB does not contain support for SSL.
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For more information on MongoDB and SSL, see http://docs.mongodb.org/manual/tutorial/configure\-ssl\&.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-username <username>, \-u
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Specifies a username with which to authenticate to a MongoDB database
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that uses authentication. Use in conjunction with the \fB\-\-password\fP and
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\fB\-\-authenticationDatabase\fP options.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-password <password>, \-p
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Specifies a password with which to authenticate to a MongoDB database
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that uses authentication. Use in conjunction with the \fB\-\-username\fP and
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\fB\-\-authenticationDatabase\fP options.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-authenticationDatabase <dbname>
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New in version 2.4.
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.sp
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Specifies the database that holds the user\(aqs credentials.
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If you do not specify an authentication database, \fBmongoexport\fP assumes
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that the database specified as the argument to the \fI\-\-db\fP option
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holds the user\(aqs credentials.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-authenticationMechanism <name>
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New in version 2.4.
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.sp
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Specifies the authentication mechanism. By default, the authentication
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mechanism is \fBMONGODB\-CR\fP, which is the MongoDB challenge/response
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authentication mechanism. In MongoDB Enterprise, \fBmongoexport\fP also includes
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support for \fBGSSAPI\fP to handle Kerberos authentication. See
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http://docs.mongodb.org/manual/tutorial/control\-access\-to\-mongodb\-with\-kerberos\-authentication
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for more information about Kerberos authentication.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-dbpath <path>
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Specifies the directory of the MongoDB data files. If used, the
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\fI\-\-dbpath\fP option enables \fBmongoexport\fP to attach directly to local data
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files without a running \fBmongod\fP\&. When run with \fI\-\-dbpath\fP,
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\fBmongoexport\fP locks access to the data directory. No \fBmongod\fP can
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access the same path while the process runs.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-directoryperdb
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When used in conjunction with the corresponding option in
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\fBmongod\fP, allows \fBmongoexport\fP to export data from
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MongoDB instances that have every database\(aqs files saved in discrete
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directories on the disk. This option is only relevant when specifying
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the \fI\-\-dbpath\fP option.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-journal
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Allows \fBmongoexport\fP operations to use the durability \fIjournal\fP to
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ensure data files remain valid and recoverable. This option is only
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relevant when specifying the \fI\-\-dbpath\fP option.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-db <database>, \-d
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Specifies the name of the database on which to run \fBmongoexport\fP\&.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-collection <collection>, \-c
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Specifies the collection to export.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-fields <field1[,field2]>, \-f
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Specifies a field or fields to \fIinclude\fP in the export. Use a comma
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separated list of fields to specify multiple fields.
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.sp
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For \fI\-\-csv\fP output formats,
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\fBmongoexport\fP includes only the specified field(s), and the
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specified field(s) can be a field within a sub\-document.
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.sp
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For \fIJSON\fP output formats, \fBmongoexport\fP includes
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only the specified field(s) \fBand\fP the \fB_id\fP field, and if the
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specified field(s) is a field within a sub\-document, the
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\fBmongoexport\fP includes the sub\-document with all
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its fields, not just the specified field within the document.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-fieldFile <filename>
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As an alternative to \fI\-\-fields\fP, the
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\fI\-\-fieldFile\fP option allows you to
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specify in a file the field or fields to \fIinclude\fP in the export and is
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\fBonly valid\fP with the \fI\-\-csv\fP option. The
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file must have only one field per line, and the line(s) must end with
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the LF character (\fB0x0A\fP).
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.sp
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\fBmongoexport\fP includes only the specified field(s). The
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specified field(s) can be a field within a sub\-document.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-query <JSON>, \-q
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Provides a \fIJSON document\fP as a query that optionally limits
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the documents returned in the export. Specify JSON in \fBstrict
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format\fP\&.
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.sp
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For example, given a collection named \fBrecords\fP in the database
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\fBtest\fP with the following documents:
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.INDENT 7.0
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.INDENT 3.5
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.sp
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.nf
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.ft C
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{ "_id" : ObjectId("51f0188846a64a1ed98fde7c"), "a" : 1 }
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{ "_id" : ObjectId("520e61b0c6646578e3661b59"), "a" : 1, "b" : 2 }
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{ "_id" : ObjectId("520e642bb7fa4ea22d6b1871"), "a" : 2, "b" : 3, "c" : 5 }
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{ "_id" : ObjectId("520e6431b7fa4ea22d6b1872"), "a" : 3, "b" : 3, "c" : 6 }
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{ "_id" : ObjectId("520e6445b7fa4ea22d6b1873"), "a" : 5, "b" : 6, "c" : 8 }
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.ft P
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.fi
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.UNINDENT
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.UNINDENT
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.sp
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The following \fBmongoexport\fP uses the \fI\%\-q\fP option to
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export only the documents with the field \fBa\fP greater than or equal to
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(\fB$gte\fP) to \fB3\fP:
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.INDENT 7.0
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.INDENT 3.5
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.sp
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.nf
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.ft C
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mongoexport \-d test \-c records \-q "{ a: { \e$gte: 3 } } }" \-\-out exportdir/myRecords.json
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.ft P
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.fi
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.UNINDENT
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.UNINDENT
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.sp
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The resulting file contains the following documents:
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.INDENT 7.0
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.INDENT 3.5
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.sp
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.nf
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.ft C
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{ "_id" : { "$oid" : "520e6431b7fa4ea22d6b1872" }, "a" : 3, "b" : 3, "c" : 6 }
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{ "_id" : { "$oid" : "520e6445b7fa4ea22d6b1873" }, "a" : 5, "b" : 6, "c" : 8 }
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.ft P
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.fi
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.UNINDENT
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.UNINDENT
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.sp
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You can sort the results with the \fI\%\-\-sort\fP option to
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\fBmongoexport\fP\&.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-csv
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Changes the export format to a comma\-separated\-values (CSV)
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format. By default \fBmongoexport\fP writes data using one
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\fIJSON\fP document for every MongoDB document.
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.sp
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If you specify \fI\%\-\-csv\fP, then you must also use either
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the \fI\-\-fields\fP or the \fI\-\-fieldFile\fP option to
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declare the fields to export from the collection.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-out <file>, \-o
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Specifies a file to write the export to. If you do not specify a file
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name, the \fBmongoexport\fP writes data to standard output
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(e.g. \fBstdout\fP).
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-jsonArray
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Modifies the output of \fBmongoexport\fP to write the
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entire contents of the export as a single \fIJSON\fP array. By
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default \fBmongoexport\fP writes data using one JSON document
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for every MongoDB document.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-slaveOk, \-k
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Allows \fBmongoexport\fP to read data from secondary or slave
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nodes when using \fBmongoexport\fP with a replica set. This
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option is only available if connected to a \fBmongod\fP or
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\fBmongos\fP and is not available when used with the
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"\fImongoexport \-\-dbpath\fP" option.
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.sp
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This is the default behavior.
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.UNINDENT
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.INDENT 0.0
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.TP
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.B \-\-forceTableScan
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New in version 2.2.
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.sp
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Forces \fBmongoexport\fP to scan the data store directly:
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typically, \fBmongoexport\fP saves entries as they appear in the
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index of the \fB_id\fP field. Use \fI\%\-\-forceTableScan\fP to skip
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the index and scan the data directly. Typically there are two cases
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where this behavior is preferable to the default:
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.INDENT 7.0
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.IP 1. 3
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If you have key sizes over 800 bytes that would not be present
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in the \fB_id\fP index.
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.IP 2. 3
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Your database uses a custom \fB_id\fP field.
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.UNINDENT
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.sp
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When you run with \fI\%\-\-forceTableScan\fP, \fBmongoexport\fP
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does not use \fB$snapshot\fP\&. As a result, the export produced
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by \fBmongoexport\fP can reflect the state of the database at
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many different points in time.
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.sp
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\fBWARNING:\fP
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.INDENT 7.0
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.INDENT 3.5
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Use \fI\%\-\-forceTableScan\fP with extreme caution
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and consideration.
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.UNINDENT
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.UNINDENT
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|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-skip <number>
|
|
Use \fI\%\-\-skip\fP to control where \fBmongoexport\fP begins
|
|
exporting documents. See \fBskip()\fP for information about
|
|
the underlying operation.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-limit <number>
|
|
Specifies a maximum number of documents to include in the
|
|
export. See \fBlimit()\fP for information about
|
|
the underlying operation.
|
|
.UNINDENT
|
|
.INDENT 0.0
|
|
.TP
|
|
.B \-\-sort <JSON>
|
|
Specifies an ordering for exported results. If an index does
|
|
\fBnot\fP exist that can support the sort operation, the results must
|
|
be \fIless than\fP 32 megabytes.
|
|
.sp
|
|
Use \fI\%\-\-sort\fP conjunction with \fI\%\-\-skip\fP and
|
|
\fI\%\-\-limit\fP to limit number of exported documents.
|
|
.INDENT 7.0
|
|
.INDENT 3.5
|
|
.sp
|
|
.nf
|
|
.ft C
|
|
mongoexport \-d test \-c records \-\-sort \(aq{a: 1}\(aq \-\-limit 100 \-\-out export.0.json
|
|
mongoexport \-d test \-c records \-\-sort \(aq{a: 1}\(aq \-\-limit 100 \-\-skip 100 \-\-out export.1.json
|
|
mongoexport \-d test \-c records \-\-sort \(aq{a: 1}\(aq \-\-limit 100 \-\-skip 200 \-\-out export.2.json
|
|
.ft P
|
|
.fi
|
|
.UNINDENT
|
|
.UNINDENT
|
|
.sp
|
|
See \fBsort()\fP for information about the underlying
|
|
operation.
|
|
.UNINDENT
|
|
.SH USE
|
|
.SS Export in CSV Format
|
|
.sp
|
|
In the following example, \fBmongoexport\fP exports the
|
|
collection \fBcontacts\fP from the \fBusers\fP database from the
|
|
\fBmongod\fP instance running on the localhost port number
|
|
\fB27017\fP\&. This command writes the export data in \fICSV\fP format
|
|
into a file located at \fB/opt/backups/contacts.csv\fP\&. The
|
|
\fBfields.txt\fP file contains a line\-separated list of fields to
|
|
export.
|
|
.INDENT 0.0
|
|
.INDENT 3.5
|
|
.sp
|
|
.nf
|
|
.ft C
|
|
mongoexport \-\-db users \-\-collection contacts \-\-csv \-\-fieldFile fields.txt \-\-out /opt/backups/contacts.csv
|
|
.ft P
|
|
.fi
|
|
.UNINDENT
|
|
.UNINDENT
|
|
.SS Export in JSON Format
|
|
.sp
|
|
The next example creates an export of the collection \fBcontacts\fP
|
|
from the MongoDB instance running on the localhost port number \fB27017\fP,
|
|
with journaling explicitly enabled. This writes the export to the
|
|
\fBcontacts.json\fP file in \fIJSON\fP format.
|
|
.INDENT 0.0
|
|
.INDENT 3.5
|
|
.sp
|
|
.nf
|
|
.ft C
|
|
mongoexport \-\-db sales \-\-collection contacts \-\-out contacts.json \-\-journal
|
|
.ft P
|
|
.fi
|
|
.UNINDENT
|
|
.UNINDENT
|
|
.SS Export Collection Directly From Data Files
|
|
.sp
|
|
The following example exports the collection \fBcontacts\fP from the
|
|
\fBsales\fP database located in the MongoDB data files located at
|
|
\fB/srv/mongodb/\fP\&. This operation writes the export to standard output
|
|
in \fIJSON\fP format.
|
|
.INDENT 0.0
|
|
.INDENT 3.5
|
|
.sp
|
|
.nf
|
|
.ft C
|
|
mongoexport \-\-db sales \-\-collection contacts \-\-dbpath /srv/mongodb/
|
|
.ft P
|
|
.fi
|
|
.UNINDENT
|
|
.UNINDENT
|
|
.sp
|
|
\fBWARNING:\fP
|
|
.INDENT 0.0
|
|
.INDENT 3.5
|
|
The above example will only succeed if there is no \fBmongod\fP
|
|
connected to the data files located in the \fB/srv/mongodb/\fP
|
|
directory.
|
|
.UNINDENT
|
|
.UNINDENT
|
|
.SS Export from Remote Host Running with Authentication
|
|
.sp
|
|
The following example exports the collection \fBcontacts\fP from the
|
|
database \fBmarketing\fP . This data resides on the MongoDB instance
|
|
located on the host \fBmongodb1.example.net\fP running on port \fB37017\fP,
|
|
which requires the username \fBuser\fP and the password \fBpass\fP\&.
|
|
.INDENT 0.0
|
|
.INDENT 3.5
|
|
.sp
|
|
.nf
|
|
.ft C
|
|
mongoexport \-\-host mongodb1.example.net \-\-port 37017 \-\-username user \-\-password pass \-\-collection contacts \-\-db marketing \-\-out mdb1\-examplenet.json
|
|
.ft P
|
|
.fi
|
|
.UNINDENT
|
|
.UNINDENT
|
|
.SH TYPE FIDELITY
|
|
.sp
|
|
\fBWARNING:\fP
|
|
.INDENT 0.0
|
|
.INDENT 3.5
|
|
\fBmongoimport\fP and \fBmongoexport\fP do not reliably
|
|
preserve all rich \fIBSON\fP data types because \fIJSON\fP can
|
|
only represent a subset of the types supported by BSON. As a result,
|
|
data exported or imported with these tools may lose some measure of
|
|
fidelity. See http://docs.mongodb.org/manual/reference/mongodb\-extended\-json for more
|
|
information.
|
|
.UNINDENT
|
|
.UNINDENT
|
|
.sp
|
|
JSON can only represent a subset of the types supported by BSON. To
|
|
preserve type information, \fBmongoexport\fP uses the \fBstrict
|
|
mode representation\fP for certain
|
|
types.
|
|
.sp
|
|
For example, the following insert operation in the \fBmongo\fP
|
|
shell uses the \fBmongoShell mode representation\fP for the BSON types
|
|
\fBdata_date\fP and \fBdata_numberlong\fP:
|
|
.INDENT 0.0
|
|
.INDENT 3.5
|
|
.sp
|
|
.nf
|
|
.ft C
|
|
use test
|
|
db.traffic.insert( { _id: 1, volume: NumberLong(2980000), date: new Date() } )
|
|
.ft P
|
|
.fi
|
|
.UNINDENT
|
|
.UNINDENT
|
|
.sp
|
|
Use \fBmongoexport\fP to export the data:
|
|
.INDENT 0.0
|
|
.INDENT 3.5
|
|
.sp
|
|
.nf
|
|
.ft C
|
|
mongoexport \-\-db test \-\-collection traffic \-\-out traffic.json
|
|
.ft P
|
|
.fi
|
|
.UNINDENT
|
|
.UNINDENT
|
|
.sp
|
|
The exported data is in \fBstrict mode representation\fP to preserve type information:
|
|
.INDENT 0.0
|
|
.INDENT 3.5
|
|
.sp
|
|
.nf
|
|
.ft C
|
|
{ "_id" : 1, "volume" : { "$numberLong" : "2980000" }, "date" : { "$date" : "2014\-03\-13T13:47:42.483\-0400" } }
|
|
.ft P
|
|
.fi
|
|
.UNINDENT
|
|
.UNINDENT
|
|
.sp
|
|
See http://docs.mongodb.org/manual/reference/mongodb\-extended\-json for a complete list of
|
|
these types and the representations used.
|
|
.SH AUTHOR
|
|
MongoDB Documentation Project
|
|
.SH COPYRIGHT
|
|
2011-2014, MongoDB, Inc.
|
|
.\" Generated by docutils manpage writer.
|
|
.
|