.TH "MONGORESTORE" "1" "March 14, 2013" "2.2.3" "mongodb-manual"
.SH NAME
mongorestore \- MongoDB
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.SH SYNOPSIS
.sp
The \fI\%mongorestore\fP tool imports content from binary database
dump, created by \fBmongodump\fP into a specific
database. \fI\%mongorestore\fP can import content to an existing
database or create a new one.
.sp
\fI\%mongorestore\fP only performs inserts into the existing
database, and does not perform updates or \fIupserts\fP. If
existing data with the same \fB_id\fP already exists on the target
database, \fI\%mongorestore\fP will \fInot\fP replace it.
.sp
\fI\%mongorestore\fP will recreate indexes from the dump
.sp
The behavior of \fI\%mongorestore\fP has the following properties:
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.IP \(bu 2
all operations are inserts, not updates.
.IP \(bu 2
all inserts are "fire and forget," \fI\%mongorestore\fP does not
wait for a response from a \fBmongod\fP to ensure that the
MongoDB process has received or recorded the operation.
.sp
The \fBmongod\fP will record any errors to its log that occur
during a restore operation but \fI\%mongorestore\fP will not
receive errors.
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.IP Note
The format of data created by \fBmongodump\fP tool from the
2.2 distribution or later is different and incompatible with
earlier versions of \fBmongod\fP.
.RE
.SH OPTIONS
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.TP
.B mongorestore
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.B \-\-help
Returns a basic help and usage text.
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.B \-\-verbose, \-v
Increases the amount of internal reporting returned on the command
line. Increase the verbosity with the \fB\-v\fP form by including
the option multiple times, (e.g. \fB\-vvvvv\fP.)
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.B \-\-version
Returns the version of the \fI\%mongorestore\fP tool.
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.B \-\-host <hostname><:port>
Specifies a resolvable hostname for the \fBmongod\fP to which
you want to restore the database. By default
\fI\%mongorestore\fP will attempt to connect to a MongoDB
process running on the localhost port number \fB27017\fP.
.sp
Optionally, specify a port number to connect a MongoDB instance
running on a port other than \fB27017\fP.
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To connect to a replica set, you can specify the replica set seed
name, and a seed list of set members, in the following format:
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<replica_set_name>/<hostname1><:port>,<hostname2:<port>,...
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.fi
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.B \-\-port <port>
Specifies the port number, if the MongoDB instance is not running
on the standard port. (i.e. \fB27017\fP) You may also specify a port
number using the \fI\%--host\fP command.
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.B \-\-ipv6
Enables IPv6 support that allows \fI\%mongorestore\fP to connect
to the MongoDB instance using an IPv6 network. All MongoDB programs
and processes, including \fI\%mongorestore\fP, disable IPv6
support by default.
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.B \-\-ssl
New in version 2.4: MongoDB added support for SSL connections to \fBmongod\fP
instances in mongorestore.
.IP Note
SSL support in mongorestore is not compiled into the default
distribution of MongoDB. See \fB/administration/ssl\fP for more
information on SSL and MongoDB.
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Additionally, mongorestore does not support connections to
\fBmongod\fP instances that require client certificate
validation.
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Allows \fI\%mongorestore\fP to connect to \fBmongod\fP
instance over an SSL connection.
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.B \-\-username <username>, \-u <username>
Specifies a username to authenticate to the MongoDB instance, if
your database requires authentication. Use in conjunction with the
\fI\%--password\fP option to supply a
password.
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.B \-\-password <password>, \-p <password>
Specifies a password to authenticate to the MongoDB instance. Use
in conjunction with the \fI\%mongorestore --username\fP option to
supply a username.
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If you specify a \fI\%--username\fP
without the \fI\%--password\fP option, \fI\%mongorestore\fP
will prompt for a password interactively.
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.B \-\-authenticationDatabase <dbname>
New in version 2.4.
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Specifies the database that holds the user\(aqs (e.g
\fI\%--username\fP) credentials.
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By default, \fI\%mongorestore\fP assumes that the database specified to the
\fI\%--db\fP argument holds the user\(aqs credentials, unless you
specify \fI\%--authenticationDatabase\fP.
.sp
See \fBuserSource\fP,
\fB/reference/privilege\-documents\fP and
\fB/reference/user\-privileges\fP for more information about
delegated authentication in MongoDB.
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.B \-\-authenticationMechanism <name>
New in version 2.4.
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Specifies the authentication mechanism. By default, the
authentication mechanism is \fBMONGODB\-CR\fP, which is the MongoDB
challenge/response authentication mechanism. In the MongoDB Subscriber Edition,
\fI\%mongorestore\fP also includes support for \fBGSSAPI\fP to handle
Kerberos authentication.
.sp
See \fB/tutorial/control\-access\-to\-mongodb\-with\-kerberos\-authentication\fP
for more information about Kerberos authentication.
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.B \-\-dbpath <path>
Specifies the directory of the MongoDB data files. If used, the
\fI\%--dbpath\fP option enables \fI\%mongorestore\fP to attach
directly to local data files and insert the data without the
\fBmongod\fP. To run with \fI\%--dbpath\fP,
\fI\%mongorestore\fP needs to lock access to the data directory:
as a result, no \fBmongod\fP can access the same path while the
process runs.
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.B \-\-directoryperdb
Use the \fI\%--directoryperdb\fP in conjunction with the
corresponding option to \fBmongod\fP, which allows
\fI\%mongorestore\fP to import data into MongoDB instances that
have every database\(aqs files saved in discrete directories on the
disk. This option is only relevant when specifying the
\fI\%--dbpath\fP option.
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.B \-\-journal
Allows \fI\%mongorestore\fP write to the durability
\fIjournal\fP to ensure that the data files will remain in a
consistent state during the write process. This option is only
relevant when specifying the \fI\%--dbpath\fP option.
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.B \-\-db <db>, \-d <db>
Use the \fI\%--db\fP option to specify a database for
\fI\%mongorestore\fP to restore data \fIinto\fP. If the database
doesn\(aqt exist, \fI\%mongorestore\fP will create the specified
database.  If you do not specify a \fB<db>\fP,
\fI\%mongorestore\fP creates new databases that correspond to
the databases where data originated and data may be
overwritten. Use this option to restore data into a MongoDB
instance that already has data.
.sp
\fI\%--db\fP does \fInot\fP control which \fIBSON\fP files
\fI\%mongorestore\fP restores. You must use the
\fI\%mongorestore\fP \fI\%path option\fP to limit that restored data.
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.B \-\-collection <collection>, \-c <collection>
Use the \fI\%--collection\fP option to specify a collection for
\fI\%mongorestore\fP to restore. If you do not specify a
\fB<collection>\fP, \fI\%mongorestore\fP imports all collections
created. Existing data may be overwritten. Use this option to
restore data into a MongoDB instance that already has data, or to
restore only some data in the specified imported data set.
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.B \-\-objcheck
Forces the \fI\%mongorestore\fP to validate all requests from
clients upon receipt to ensure that clients never insert invalid
documents into the database. For objects with a high degree of
sub\-document nesting, \fI\%--objcheck\fP can have a small impact
on performance. You can set \fI\%--noobjcheck\fP to disable
object checking at run\-time.
.sp
Changed in version 2.4: MongoDB enables \fI\%--objcheck\fP by default, to prevent any
client from inserting malformed or invalid BSON into a MongoDB
database.
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.B \-\-noobjcheck
New in version 2.4.
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Disables the default document validation that MongoDB performs on all
incoming BSON documents.
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.B \-\-filter \(aq<JSON>\(aq
Limits the documents that \fI\%mongorestore\fP imports to only
those documents that match the JSON document specified as
\fB\(aq<JSON>\(aq\fP. Be sure to include the document in single quotes to
avoid interaction with your system\(aqs shell environment.
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.B \-\-drop
Modifies the restoration procedure to drop every collection from
the target database before restoring the collection from the dumped
backup.
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.B \-\-oplogReplay
Replays the \fIoplog\fP after restoring the dump to ensure that the current
state of the database reflects the point\-in\-time backup captured with
the "\fImongodump \-\-oplog\fP" command.
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.B \-\-keepIndexVersion
Prevents \fI\%mongorestore\fP from upgrading the index to the latest
version during the restoration process.
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.B \-\-w <number of replicas per write>
New in version 2.2.
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Specifies the \fIwrite concern\fP for each write operation that
\fI\%mongorestore\fP writes to the target database. By default,
\fI\%mongorestore\fP does not wait for a response for
\fIwrite acknowledgment\fP.
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.B \-\-noOptionsRestore
New in version 2.2.
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Prevents \fI\%mongorestore\fP from setting the collection
options, such as those specified by the \fBcollMod\fP
\fIdatabase command\fP, on restored collections.
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.B \-\-noIndexRestore
New in version 2.2.
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Prevents \fI\%mongorestore\fP from restoring and building
indexes as specified in the corresponding \fBmongodump\fP
output.
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.B \-\-oplogLimit <timestamp>
New in version 2.2.
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Prevents \fI\%mongorestore\fP from applying \fIoplog\fP entries newer
than the \fB<timestamp>\fP. Specify \fB<timestamp>\fP values in the
form of \fB<time_t>:<ordinal>\fP, where \fB<time_t>\fP is the seconds
since the UNIX epoch, and \fB<ordinal>\fP represents a counter of
operations in the oplog that occurred in the specified second.
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You must use \fI\%--oplogLimit\fP in conjunction with the
\fI\%--oplogReplay\fP option.
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.B <path>
The final argument of the \fI\%mongorestore\fP command is a
directory path. This argument specifies the location of the
database dump from which to restore.
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.SH USAGE
.sp
See \fB/tutorial/backup\-databases\-with\-binary\-database\-dumps\fP
for a larger overview of \fI\%mongorestore\fP
usage. Also see the "\fBmongodump\fP" document for an overview of the
\fBmongodump\fP, which provides the related inverse
functionality.
.sp
Consider the following example:
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.nf
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mongorestore \-\-collection people \-\-db accounts dump/accounts/
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.fi
.sp
Here, \fI\%mongorestore\fP reads the database dump in the \fBdump/\fP
sub\-directory of the current directory, and restores \fIonly\fP the
documents in the collection named \fBpeople\fP from the database named
\fBaccounts\fP. \fI\%mongorestore\fP restores data to the instance
running on the localhost interface on port \fB27017\fP.
.sp
In the next example, \fI\%mongorestore\fP restores a backup of the
database instance located in \fBdump\fP to a database instance stored
in the \fB/srv/mongodb\fP on the local machine. This requires that there
are no active \fBmongod\fP instances attached to \fB/srv/mongodb\fP
data directory.
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.nf
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mongorestore \-\-dbpath /srv/mongodb
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.fi
.sp
In the final example, \fI\%mongorestore\fP restores a database
dump located at \fB/opt/backup/mongodump\-2011\-10\-24\fP, from a database
running on port \fB37017\fP on the host
\fBmongodb1.example.net\fP. \fI\%mongorestore\fP authenticates to
the this MongoDB instance using the username \fBuser\fP and the
password \fBpass\fP, as follows:
.sp
.nf
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mongorestore \-\-host mongodb1.example.net \-\-port 37017 \-\-username user \-\-password pass /opt/backup/mongodump\-2011\-10\-24
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.fi
.SH AUTHOR
MongoDB Documentation Project
.SH COPYRIGHT
2011-2013, 10gen, Inc.
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