Wednesday, July 13, 2016

mongoimport - Import data into Mongo DB

The mongoimport tool imports content from an Extended JSON, CSV, or TSV export created by mongoexport, or potentially, another third-party export tool.
See Human Intelligible Import/Export Formats for more in-depth usage overview, and the mongoexport document for more information regarding mongoexport, which provides the inverse “exporting” capability.

Considerations

WARNING
Avoid using mongoimport and mongoexport for full instance production backups. They do not reliably preserve all rich BSON data types, because JSON can only represent a subset of the types supported by BSON. Use mongodump and mongorestore as described in MongoDB Backup Methods for this kind of functionality.
To preserve type information, mongoexport and mongoimport uses the strict mode representation for certain types.
For example, the following insert operation in the mongo shell uses the shell mode representation for the BSON types data_date and data_numberlong:
use test
db.traffic.insert( { _id: 1, volume: NumberLong('2980000'), date: new Date() } )
The argument to data_numberlong must be quoted to avoid potential loss of accuracy.
Use mongoexport to export the data:
mongoexport --db test --collection traffic --out traffic.json
The exported data is in strict mode representation to preserve type information:
{ "_id" : 1, "volume" : { "$numberLong" : "2980000" }, "date" : { "$date" : "2014-03-13T13:47:42.483-0400" } }

Required Access

In order to connect to a mongod that enforces authorization with the --auth option, you must use the --username and --password options. The connecting user must possess, at a minimum, the readWrite role on the database into which they are importing data.

Options

Changed in version 3.0.0: mongoimport removed the --dbpath as well as related --directoryperdband --journal options. You must use mongoimport while connected to a mongod instance.
mongoimport
--help
Returns information on the options and use of mongoimport.
--verbose-v
Increases the amount of internal reporting returned on standard output or in log files. Increase the verbosity with the -v form by including the option multiple times, (e.g. -vvvvv.)
--quiet
Runs the mongoimport in a quiet mode that attempts to limit the amount of output.
This option suppresses:
  • output from database commands
  • replication activity
  • connection accepted events
  • connection closed events
--version
Returns the mongoimport release number.
--host <hostname><:port>-h <hostname><:port>
Default: localhost:27017
Specifies a resolvable hostname for the mongod to which to connect. By default, the mongoimportattempts to connect to a MongoDB instance running on the localhost on port number 27017.
To connect to a replica set, specify the replSetName and a seed list of set members, as in the following:
<replSetName>/<hostname1><:port>,<hostname2><:port>,<...>
You can always connect directly to a single MongoDB instance by specifying the host and port number directly.
Changed in version 3.0.0: If you use IPv6 and use the <address>:<port> format, you must enclose the portion of an address and port combination in brackets (e.g. [<address>]).
--port <port>
Default: 27017
Specifies the TCP port on which the MongoDB instance listens for client connections.

--username <username>-u <username>
Specifies a username with which to authenticate to a MongoDB database that uses authentication. Use in conjunction with the --password and --authenticationDatabase options.
--password <password>-p <password>
Specifies a password with which to authenticate to a MongoDB database that uses authentication. Use in conjunction with the --username and --authenticationDatabase options.
Changed in version 3.0.0: If you do not specify an argument for --password, mongoimport returns an error.
Changed in version 3.0.2: If you wish mongoimport to prompt the user for the password, pass the --username option without --password or specify an empty string as the --password value, as in --password "" .
--authenticationDatabase <dbname>
Specifies the database in which the user is created. 
--authenticationMechanism <name>
Default: SCRAM-SHA-1
Changed in version 2.6: Added support for the PLAIN and MONGODB-X509 authentication mechanisms.
Changed in version 3.0: Added support for the SCRAM-SHA-1 authentication mechanism. Changed default mechanism to SCRAM-SHA-1.
Specifies the authentication mechanism the mongoimport instance uses to authenticate to the mongod or mongos.
ValueDescription
SCRAM-SHA-1RFC 5802 standard Salted Challenge Response Authentication Mechanism using the SHA1 hash function.
MONGODB-CRMongoDB challenge/response authentication.
MONGODB-X509MongoDB TLS/SSL certificate authentication.
GSSAPI (Kerberos)External authentication using Kerberos. This mechanism is available only in MongoDB Enterprise.
PLAIN (LDAP SASL)External authentication using LDAP. You can also use PLAIN for authenticating in-database users. PLAIN transmits passwords in plain text. This mechanism is available only in MongoDB Enterprise.
--gssapiServiceName
New in version 2.6.
Specify the name of the service using GSSAPI/Kerberos. Only required if the service does not use the default name of mongodb.
This option is available only in MongoDB Enterprise.
--gssapiHostName
New in version 2.6.
Specify the hostname of a service using GSSAPI/Kerberos. Only required if the hostname of a machine does not match the hostname resolved by DNS.
This option is available only in MongoDB Enterprise.
--db <database>-d <database>
Specifies the name of the database on which to run the mongoimport.
--collection <collection>-c <collection>
Specifies the collection to import.
New in version 2.6: If you do not specify --collection, mongoimport takes the collection name from the input filename. MongoDB omits the extension of the file from the collection name, if the input file has an extension.
--fields <field1[,field2]>-f <field1[,field2]>
Specify a comma separated list of field names when importing csv or tsv files that do not have field names in the first (i.e. header) line of the file.
If you attempt to include --fields when importing JSON data, mongoimport will return an error. --fields is only for csv or tsv imports.
--fieldFile <filename>
As an alternative to --fields, the --fieldFile option allows you to specify a file that holds a list of field names if your csv or tsv file does not include field names in the first line of the file (i.e. header). Place one field per line.
If you attempt to include --fieldFile when importing JSON data, mongoimport will return an error. --fieldFile is only for csv or tsv imports.
--ignoreBlanks
Ignores empty fields in csv and tsv exports. If not specified, mongoimport creates fields without values in imported documents.
If you attempt to include --ignoreBlanks when importing JSON data, mongoimport will return an error.--ignoreBlanks is only for csv or tsv imports.
--type <json|csv|tsv>
Specifies the file type to import. The default format is JSON, but it’s possible to import csv (Comma separated Values) and tsv (Tab separated values) files.
The csv parser accepts that data that complies with RFC RFC 4180. As a result, backslashes are not a valid escape character. If you use double-quotes to enclose fields in the CSV data, you must escape internal double-quote marks by prepending another double-quote.
--file <filename>
Specifies the location and name of a file containing the data to import. If you do not specify a file,mongoimport reads data from standard input (e.g. “stdin”).
--drop
Modifies the import process so that the target instance drops the collection before importing the data from the input.
--headerline
If using --type csv or --type tsv, uses the first line as field names. Otherwise, mongoimport will import the first line as a distinct document.
If you attempt to include --headerline when importing JSON data, mongoimport will return an error. --headerline is only for csv or tsv imports.
--upsert
Modifies the import process to update existing objects in the database if they match an imported object, while inserting all other objects.
If you do not specify a field or fields using the --upsertFields mongoimport will upsert on the basis of the _id field.
Depending on your MongoDB configuration, --upsert may impact your mongod‘s performance.
Changed in version 3.0.0: --upsertFields now implies --upsert. As such, you may prefer to use --upsertFields instead of --upsert.
--upsertFields <field1[,field2]>
Specifies a list of fields for the query portion of the upsert. Use this option if the _id fields in the existing documents don’t match the field in the document, but another field or field combination can uniquely identify documents as a basis for performing upsert operations.
Changed in version 3.0.0: Modifies the import process to update existing objects in the database if they match based on the specified fields, while inserting all other objects. You do not need to use --upsert with --upsertFields.
If you do not specify a field, --upsertFields will upsert on the basis of the _id field.
To ensure adequate performance, indexes should exist for this field or fields.
--stopOnError
Forces mongoimport to halt the insert operation at the first error rather than continuing the operation despite errors.
--jsonArray
Accepts the import of data expressed with multiple MongoDB documents within a single JSON array. Limited to imports of 16 MB or smaller.
Use --jsonArray in conjunction with mongoexport --jsonArray.
--maintainInsertionOrder
Default: False
If specified, mongoimport inserts the documents in the order of their appearance in the input source, otherwise mongoimport may perform the insertions in an arbitrary order.
--numInsertionWorkers int
Default: 1
New in version 3.0.0.
Specifies the number of insertion workers to run concurrently.
For large imports, increasing the number of insertion workers may increase the speed of the import.
--writeConcern <document>
Default: majority
Specifies the write concern for each write operation that mongoimport writes to the target database.
Specify the write concern as a document with w options.
--bypassDocumentValidation
Enables mongoimport to bypass document validation during the operation. This lets you insert documents that do not meet the validation requirements.
New in version 3.2.1.

Use

Simple Usage

mongoimport restores a database from a backup taken with mongoexport. Most of the arguments to mongoexport also exist for mongoimport.
In the following example, mongoimport imports the data in the JSON data from the contacts.json file into the collection contacts in the users database.
mongoimport --db users --collection contacts --file contacts.json

Import JSON to Remote Host Running with Authentication

In the following example, mongoimport imports data from the file /opt/backups/mdb1-examplenet.json into the contacts collection within the database marketing on a remote MongoDB database with authentication enabled.
mongoimport connects to the mongod instance running on the host mongodb1.example.net over port37017. It authenticates with the username user and the password pass.
mongoimport --host mongodb1.example.net --port 37017 --username user --password pass --collection contacts --db marketing --file /opt/backups/mdb1-examplenet.json

CSV Import

In the following example, mongoimport imports the csv formatted data in the/opt/backups/contacts.csv file into the collection contacts in the users database on the MongoDB instance running on the localhost port numbered 27017.
Specifying --headerline instructs mongoimport to determine the name of the fields using the first line in the CSV file.
mongoimport --db users --collection contacts --type csv --headerline --file /opt/backups/contacts.csv
mongoimport uses the input file name, without the extension, as the collection name if -c or --collection is unspecified. The following example is therefore equivalent:
mongoimport --db users --type csv --headerline --file /opt/backups/contacts.csv
Use the “--ignoreBlanks” option to ignore blank fields. For CSV and TSV imports, this option provides the desired functionality in most cases because it avoids inserting fields with null values into your collection.


mongoexport - Export Data from Mongo DB

mongoexport is a utility that produces a JSON or CSV export of data stored in a MongoDB instance. 

Considerations

WARNING
Avoid using mongoimport and mongoexport for full instance production backups. They do not reliably preserve all rich BSON data types, because JSON can only represent a subset of the types supported by BSON. Use mongodump and mongorestore for this kind of functionality.
To preserve type information, mongoexport and mongoimport uses the strict mode representation for certain types.
For example, the following insert operation in the mongo shell uses the shell mode representation for the BSON types data_date and data_numberlong:
use test
db.traffic.insert( { _id: 1, volume: NumberLong('2980000'), date: new Date() } )
The argument to data_numberlong must be quoted to avoid potential loss of accuracy.
Use mongoexport to export the data:
mongoexport --db test --collection traffic --out traffic.json
The exported data is in strict mode representation to preserve type information:
{ "_id" : 1, "volume" : { "$numberLong" : "2980000" }, "date" : { "$date" : "2014-03-13T13:47:42.483-0400" } }


Required Access
mongoexport requires read access on the target database.
Ensure that the connecting user posseses, at a minimum, the read role on the target database.
When connecting to a mongod or mongos that enforces Authentication, ensure you use the required security parameters based on the configured authentication mechanism.

Read Preference

mongoexport defaults to primary read preference when connected to a mongos or a replica set.You can override the default read preference using the --readPreference option.

IMPORTANT
Using a non-primary read preference on a mongos may produce inconsistencies in data, including duplicates or missing documents.

Options

Changed in version 3.0.0: mongoexport removed the --dbpath as well as related --directoryperdband --journal options. You must use mongoexport while connected to a mongod instance.
Changed in version 3.0.0: mongoexport removed the --csv option. Use the --type=csv option to specify CSV format for the output.
mongoexport
--help
Returns information on the options and use of mongoexport.
--verbose-v
Increases the amount of internal reporting returned on standard output or in log files. Increase the verbosity with the -v form by including the option multiple times, (e.g. -vvvvv.)
--quiet
Runs the mongoexport in a quiet mode that attempts to limit the amount of output.
This option suppresses:
  • output from database commands
  • replication activity
  • connection accepted events
  • connection closed events
--version
Returns the mongoexport release number.

D:\MongoDB\bin>mongoexport --versionmongoexport version: 3.2.1git version: 17a5573551a0c3e33603f98375f144f1dd20b745
--host <hostname><:port>-h <hostname><:port>
Default: localhost:27017
Specifies a resolvable hostname for the mongod to which to connect. By default, the mongoexportattempts to connect to a MongoDB instance running on the localhost on port number 27017.
To connect to a replica set, specify the replSetName and a seed list of set members, as in the following:
<replSetName>/<hostname1><:port>,<hostname2><:port>,<...>
You can always connect directly to a single MongoDB instance by specifying the host and port number directly.
Changed in version 3.0.0: If you use IPv6 and use the <address>:<port> format, you must enclose the portion of an address and port combination in brackets (e.g. [<address>]).
--port <port>
Default: 27017
Specifies the TCP port on which the MongoDB instance listens for client connections.
--username <username>-u <username>
Specifies a username with which to authenticate to a MongoDB database that uses authentication. Use in conjunction with the --password and --authenticationDatabase options.
--password <password>-p <password>
Specifies a password with which to authenticate to a MongoDB database that uses authentication. Use in conjunction with the --username and --authenticationDatabase options.
Changed in version 3.0.0: If you do not specify an argument for --password, mongoexport returns an error.
Changed in version 3.0.2: If you wish mongoexport to prompt the user for the password, pass the --username option without --password or specify an empty string as the --password value, as in --password "" .
--authenticationDatabase <dbname>
If you do not specify an authentication database, mongoexport assumes that the database specified to export holds the user’s credentials.
--authenticationMechanism <name>
Default: SCRAM-SHA-1
Changed in version 2.6: Added support for the PLAIN and MONGODB-X509 authentication mechanisms.
Changed in version 3.0: Added support for the SCRAM-SHA-1 authentication mechanism. Changed default mechanism to SCRAM-SHA-1.
Specifies the authentication mechanism the mongoexport instance uses to authenticate to the mongod or mongos.
ValueDescription
SCRAM-SHA-1RFC 5802 standard Salted Challenge Response Authentication Mechanism using the SHA1 hash function.
MONGODB-CRMongoDB challenge/response authentication.
MONGODB-X509MongoDB TLS/SSL certificate authentication.
GSSAPI (Kerberos)External authentication using Kerberos. This mechanism is available only in MongoDB Enterprise.
PLAIN (LDAP SASL)External authentication using LDAP. You can also use PLAIN for authenticating in-database users. PLAIN transmits passwords in plain text. This mechanism is available only in MongoDB Enterprise.
--db <database>-d <database>
Specifies the name of the database on which to run the mongoexport.
--collection <collection>-c <collection>
Specifies the collection to export.
--fields <field1[,field2]>-f <field1[,field2]>
Specifies a field or fields to include in the export. Use a comma separated list of fields to specify multiple fields.
For csv output formats, mongoexport includes only the specified field(s), and the specified field(s) can be a field within a sub-document.
For JSON output formats, mongoexport includes only the specified field(s) and the _id field, and if the specified field(s) is a field within a sub-document, the mongoexport includes the sub-document with all its fields, not just the specified field within the document.
--fieldFile <filename>
An alternative to --fields. The --fieldFile option allows you to specify in a file the field or fields to includein the export and is only valid with the --type option with value csv. The file must have only one field per line, and the line(s) must end with the LF character (0x0A).
mongoexport includes only the specified field(s). The specified field(s) can be a field within a sub-document.
--query <JSON>-q <JSON>
Provides a JSON document as a query that optionally limits the documents returned in the export. Specify JSON in strict format.
You must enclose the query in single quotes (e.g. ') to ensure that it does not interact with your shell environment.
For example, given a collection named records in the database test with the following documents:
{ "_id" : ObjectId("51f0188846a64a1ed98fde7c"), "a" : 1 }
{ "_id" : ObjectId("520e61b0c6646578e3661b59"), "a" : 1, "b" : 2 }
{ "_id" : ObjectId("520e642bb7fa4ea22d6b1871"), "a" : 2, "b" : 3, "c" : 5 }
{ "_id" : ObjectId("520e6431b7fa4ea22d6b1872"), "a" : 3, "b" : 3, "c" : 6 }
{ "_id" : ObjectId("520e6445b7fa4ea22d6b1873"), "a" : 5, "b" : 6, "c" : 8 }
The following mongoexport uses the -q option to export only the documents with the field a greater than or equal to ($gte) to 3:
mongoexport -d test -c records -q '{ a: { $gte: 3 } }' --out exportdir/myRecords.json
The resulting file contains the following documents:
{ "_id" : { "$oid" : "520e6431b7fa4ea22d6b1872" }, "a" : 3, "b" : 3, "c" : 6 }
{ "_id" : { "$oid" : "520e6445b7fa4ea22d6b1873" }, "a" : 5, "b" : 6, "c" : 8 }
You can sort the results with the --sort option to mongoexport.
--type <string>
Default: json
New in version 3.0.0.
Specifies the file type to export. Specify csv for CSV format or json for JSON format.
If you specify csv, then you must also use either the --fields or the --fieldFile option to declare the fields to export from the collection.
--out <file>-o <file>
Specifies a file to write the export to. If you do not specify a file name, the mongoexport writes data to standard output (e.g. stdout).
--jsonArray
Modifies the output of mongoexport to write the entire contents of the export as a single JSON array. By default mongoexport writes data using one JSON document for every MongoDB document.
--pretty
New in version 3.0.0.
Outputs documents in a pretty-printed format JSON.
--slaveOk-k
Deprecated since version 3.2.
Sets the Read Preference to nearest, allowing mongoexport to read data from secondary replica setmembers.
--readPreference replaces --slaveOk in MongoDB 3.2. You cannot specify --slaveOk when --readPreference is specified.
WARNING
Using a read preference other than primary with a connection to a mongos may produce inconsistencies, duplicates, or result in missed documents.
--readPreference <string>
Specify the read preference for mongoexport.
mongoexport defaults to primary read preference when connected to a mongos or a replica set.
Otherwise, mongoexport defaults to nearest.
WARNING
Using a read preference other than primary with a connection to a mongos may produce inconsistencies, duplicates, or result in missed documents.
--forceTableScan
Forces mongoexport to scan the data store directly instead of traversing the _id field index. Use --forceTableScan to skip the index. Typically there are two cases where this behavior is preferable to the default:
  1. If you have key sizes over 800 bytes that would not be present in the _id index.
  2. Your database uses a custom _id field.
When you run with --forceTableScan, mongoexport may return a document more than once if a write operation interleaves with the operation to cause the document to move.
WARNING
Use --forceTableScan with extreme caution and consideration.
--skip <number>
Use --skip to control where mongoexport begins exporting documents.
--limit <number>
Specifies a maximum number of documents to include in the export. 
--sort <JSON>
Specifies an ordering for exported results. If an index does not exist that can support the sort operation, the results must be less than 32 megabytes.
Use --sort conjunction with --skip and --limit to limit number of exported documents.
mongoexport -d test -c records --sort '{a: 1}' --limit 100 --out export.0.json
mongoexport -d test -c records --sort '{a: 1}' --limit 100 --skip 100 --out export.1.json
mongoexport -d test -c records --sort '{a: 1}' --limit 100 --skip 200 --out export.2.json

Use

Export in CSV Format

Changed in version 3.0.0: mongoexport removed the --csv option. Use the --type=csv option to specify CSV format for the output.
In the following example, mongoexport exports data from the collection contacts collection in the usersdatabase in CSV format to the file /opt/backups/contacts.csv.
The mongod instance that mongoexport connects to is running on the localhost port number 27017.
When you export in CSV format, you must specify the fields in the documents to export. The operation specifies the name and address fields to export.
mongoexport --db users --collection contacts --type=csv --fields name,address --out /opt/backups/contacts.csv
For CSV exports only, you can also specify the fields in a file containing the line-separated list of fields to export. The file must have only one field per line.
For example, you can specify the name and address fields in a file fields.txt:
name
address
Then, using the --fieldFile option, specify the fields to export with the file:
mongoexport --db users --collection contacts --type=csv --fieldFile fields.txt --out /opt/backups/contacts.csv
Changed in version 3.0.0: mongoexport removed the --csv option and replaced with the --type option.

Export in JSON Format

This example creates an export of the contacts collection from the MongoDB instance running on the localhost port number 27017. This writes the export to the contacts.json file in JSON format.
mongoexport --db sales --collection contacts --out contacts.json

Export from Remote Host Running with Authentication

The following example exports the contacts collection from the marketing database, which requires authentication.
This data resides on the MongoDB instance located on the host mongodb1.example.net running on port37017, which requires the username user and the password pass.
mongoexport --host mongodb1.example.net --port 37017 --username user --password pass --collection contacts --db marketing --out mdb1-examplenet.json

Export Query Results

You can export only the results of a query by supplying a query filter with the --query option, and limit the results to a single database using the “--db” option.
For instance, this command returns all documents in the sales database’s contacts collection that contain a field named field with a value of 1.
mongoexport --db sales --collection contacts --query '{"field": 1}'
You must enclose the query in single quotes (e.g. ') to ensure that it does not interact with your shell environment.
Few other Options:
--ipv6
Removed in version 3.0.
Enables IPv6 support and allows mongoexport to connect to the MongoDB instance using an IPv6 network. Prior to MongoDB 3.0, you had to specify --ipv6 to use IPv6. In MongoDB 3.0 and later, IPv6 is always enabled.
--ssl
New in version 2.6.
Enables connection to a mongod or mongos that has TLS/SSL support enabled.
Changed in version 3.0: Most MongoDB distributions now include support for TLS/SSL. See Configure mongod and mongos for TLS/SSL and TLS/SSL Configuration for Clients for more information about TLS/SSL and MongoDB.
--sslCAFile <filename>
New in version 2.6.
Specifies the .pem file that contains the root certificate chain from the Certificate Authority. Specify the file name of the .pem file using relative or absolute paths.
Changed in version 3.0: Most MongoDB distributions now include support for TLS/SSL. See Configure mongod and mongos for TLS/SSL and TLS/SSL Configuration for Clients for more information about TLS/SSL and MongoDB.
WARNING
For SSL connections (--ssl) to mongod and mongos, if the mongoexport runs without the --sslCAFile, mongoexport will not attempt to validate the server certificates. This creates a vulnerability to expired mongod and mongos certificates as well as to foreign processes posing as valid mongod or mongos instances. Ensure that you always specify the CA file to validate the server certificates in cases where intrusion is a possibility.
--sslPEMKeyFile <filename>
New in version 2.6.
Specifies the .pem file that contains both the TLS/SSL certificate and key. Specify the file name of the.pem file using relative or absolute paths.
This option is required when using the --ssl option to connect to a mongod or mongos that has CAFileenabled without allowConnectionsWithoutCertificates.
Changed in version 3.0: Most MongoDB distributions now include support for TLS/SSL. See Configure mongod and mongos for TLS/SSL and TLS/SSL Configuration for Clients for more information about TLS/SSL and MongoDB.
--sslPEMKeyPassword <value>
New in version 2.6.
Specifies the password to de-crypt the certificate-key file (i.e. --sslPEMKeyFile). Use the --sslPEMKeyPassword option only if the certificate-key file is encrypted. In all cases, the mongoexportwill redact the password from all logging and reporting output.
If the private key in the PEM file is encrypted and you do not specify the --sslPEMKeyPassword option, the mongoexport will prompt for a passphrase. See SSL Certificate Passphrase.
Changed in version 3.0: Most MongoDB distributions now include support for TLS/SSL. See Configure mongod and mongos for TLS/SSL and TLS/SSL Configuration for Clients for more information about TLS/SSL and MongoDB.
--sslCRLFile <filename>
New in version 2.6.
Specifies the .pem file that contains the Certificate Revocation List. Specify the file name of the .pemfile using relative or absolute paths.
Changed in version 3.0: Most MongoDB distributions now include support for TLS/SSL. See Configure mongod and mongos for TLS/SSL and TLS/SSL Configuration for Clients for more information about TLS/SSL and MongoDB.
--sslAllowInvalidCertificates
New in version 2.6.
Bypasses the validation checks for server certificates and allows the use of invalid certificates. When using the allowInvalidCertificates setting, MongoDB logs as a warning the use of the invalid certificate.
Changed in version 3.0: Most MongoDB distributions now include support for TLS/SSL. See Configure mongod and mongos for TLS/SSL and TLS/SSL Configuration for Clients for more information about TLS/SSL and MongoDB.
--sslAllowInvalidHostnames
New in version 3.0.
Disables the validation of the hostnames in TLS/SSL certificates. Allows mongoexport to connect to MongoDB instances if the hostname their certificates do not match the specified hostname.
Changed in version 3.0: Most MongoDB distributions now include support for TLS/SSL. See Configure mongod and mongos for TLS/SSL and TLS/SSL Configuration for Clients for more information about TLS/SSL and MongoDB.
--sslFIPSMode
New in version 2.6.
Directs the mongoexport to use the FIPS mode of the installed OpenSSL library. Your system must have a FIPS compliant OpenSSL library to use the --sslFIPSMode option.
NOTE
FIPS-compatible SSL is available only in MongoDB Enterprise. See Configure MongoDB for FIPS for more information.

Mongodb explain() Query Analyzer and it's Verbosity

First creating 1 million documents: > for(i=0; i<100; i++) { for(j=0; j<100; j++) {x = []; for(k=0; k<100; k++) { x.push({a:...