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mongod
mongod
¶
Synopsis¶
mongod
is the primary daemon process for the MongoDB
system. It handles data requests, manages data access, and performs
background management operations.
This document provides a complete overview of all command line options
for mongod
. These command line options are primarily useful
for testing: In common operation, use the configuration file
options to control the behavior of
your database.
Options¶
-
mongod
¶
Core Options¶
-
--help
,
-h
¶
Returns information on the options and use of mongod.
-
--version
¶
Returns the mongod release number.
-
--config
<filename>
,
-f
<filename>
¶ Specifies a configuration file for runtime configuration options. The configuration file is the preferred method for runtime configuration of mongod. The options are equivalent to the command-line configuration options. See Configuration File Options for more information.
Ensure the configuration file uses ASCII encoding. The mongod instance does not support configuration files with non-ASCII encoding, including UTF-8.
-
--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 mongod 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
-
--port
<port>
¶ Default: 27017
Specifies the TCP port on which the MongoDB instance listens for client connections.
-
--bind_ip
<ip address>
¶ Default: All interfaces.
Changed in version 2.6.0: The
deb
andrpm
packages include a default configuration file that sets--bind_ip
to127.0.0.1
.Specifies the IP address that mongod binds to in order to listen for connections from applications. You may attach mongod to any interface. When attaching mongod to a publicly accessible interface, ensure that you have implemented proper authentication and firewall restrictions to protect the integrity of your database.
-
--maxConns
<number>
¶ The maximum number of simultaneous connections that mongod will accept. This setting has no effect if it is higher than your operating system’s configured maximum connection tracking threshold.
Changed in version 2.6: MongoDB removed the upward limit on the
maxIncomingConnections
setting.
-
--syslog
¶
Sends all logging output to the host’s syslog system rather than to standard output or to a log file. , as with
--logpath
.The
--syslog
option is not supported on Windows.
-
--syslogFacility
<string>
¶ Default: user
Specifies the facility level used when logging messages to syslog. The value you specify must be supported by your operating system’s implementation of syslog. To use this option, you must enable the
--syslog
option..
-
--logpath
<path>
¶ Sends all diagnostic logging information to a log file instead of to standard output or to the host’s syslog system. MongoDB creates the log file at the path you specify.
By default, MongoDB overwrites the log file when the process restarts. To instead append to the log file, set the
--logappend
option.
-
--logappend
¶
Appends new entries to the end of the log file rather than overwriting the content of the log when the mongod instance restarts.
-
--timeStampFormat
<string>
¶ Default: iso8601-local
The time format for timestamps in log messages. Specify one of the following values:
Value Description ctime
Displays timestamps as Wed Dec 31 18:17:54.811
.iso8601-utc
Displays timestamps in Coordinated Universal Time (UTC) in the ISO-8601 format. For example, for New York at the start of the Epoch: 1970-01-01T00:00:00.000Z
iso8601-local
Displays timestamps in local time in the ISO-8601 format. For example, for New York at the start of the Epoch: 1969-12-31T19:00:00.000-0500
-
--diaglog
<value>
¶ Default: 0
Deprecated since version 2.6.
--diaglog
is for internal use and not intended for most users. Creates a very verbose diagnostic log for troubleshooting and recording various errors. MongoDB writes these log files in the--dbpath
directory in a series of files that begin with the stringdiaglog
and end with the initiation time of the logging as a hex string. The specified value configures the level of verbosity:Value Setting 0 Off. No logging. 1 Log write operations. 2 Log read operations. 3 Log both read and write operations. 7 Log write and some read operations. You can use the mongosniff tool to replay this output for investigation. Given a typical diaglog file located at
/data/db/diaglog.4f76a58c
, you might use a command in the following form to read these files:Warning
Setting the diagnostic level to
0
will cause mongod to stop writing data to the diagnostic log file. However, the mongod instance will continue to keep the file open, even if it is no longer writing data to the file. If you want to rename, move, or delete the diagnostic log you must cleanly shut down the mongod instance before doing so.
-
--traceExceptions
¶
For internal diagnostic use only.
-
--pidfilepath
<path>
¶ Specifies a file location to hold the process ID of the mongod process where mongod will write its PID. This is useful for tracking the mongod process in combination with the the
--fork
option. Without a specified--pidfilepath
option, the process creates no PID file.
-
--keyFile
<file>
¶ Specifies the path to a key file that stores the shared secret that MongoDB instances use to authenticate to each other in a sharded cluster or replica set.
--keyFile
implies--auth
. See Authentication Between MongoDB Instances for more information.
-
--setParameter
<options>
¶ Specifies one of the MongoDB parameters described in MongoDB Server Parameters. You can specify multiple
setParameter
fields.
-
--httpinterface
¶
New in version 2.6.
Enables the HTTP interface. Enabling the interface can increase network exposure.
Leave the HTTP interface disabled for production deployments. If you do enable this interface, you should only allow trusted clients to access this port. See Firewalls.
Note
In MongoDB Enterprise, the HTTP Console does not support Kerberos Authentication.
-
--nohttpinterface
¶
Deprecated since version 2.6: MongoDB disables the HTTP interface by default.
Disables the HTTP interface.
Do not use in conjunction with
--rest
or--jsonp
.Note
In MongoDB Enterprise, the HTTP Console does not support Kerberos Authentication.
-
--nounixsocket
¶
Disables listening on the UNIX domain socket. The mongod process always listens on the UNIX socket unless one of the following is true:
--nounixsocket
is setbindIp
is not setbindIp
does not specify127.0.0.1
-
--unixSocketPrefix
<path>
¶ Default: /tmp
The path for the UNIX socket. If this option has no value, the mongod process creates a socket with
/tmp
as a prefix. MongoDB creates and listens on a UNIX socket unless one of the following is true:net.unixDomainSocket.enabled
isfalse
--nounixsocket
is setbindIp
is not setnet.bindIp
does not specify127.0.0.1
-
--fork
¶
Enables a daemon mode that runs the mongod process in the background. By default mongod does not run as a daemon: typically you will run mongod as a daemon, either by using
--fork
or by using a controlling process that handles the daemonization process (e.g. as withupstart
andsystemd
).
-
--auth
¶
Enables authorization to control user’s access to database resources and operations. When authorization is enabled, MongoDB requires all clients to authenticate themselves first in order to determine the access for the client.
Configure users via the mongo shell. If no users exist, the localhost interface will continue to have access to the database until you create the first user.
See Security for more information.
-
--noauth
¶
Disables authentication. Currently the default. Exists for future compatibility and clarity.
-
--ipv6
¶
Enables IPv6 support and allows the mongod to connect to the MongoDB instance using an IPv6 network. All MongoDB programs and processes disable IPv6 support by default.
-
--jsonp
¶
Permits JSONP access via an HTTP interface. Enabling the interface can increase network exposure. The
--jsonp
option enables the HTTP interface, even if theHTTP interface
option is disabled.
-
--rest
¶
Enables the simple REST API. Enabling the REST API enables the HTTP interface, even if the
HTTP interface
option is disabled, and as a result can increase network exposure.
-
--slowms
<integer>
¶ Default: 100
The threshold in milliseconds at which the database profiler considers a query slow. MongoDB records all slow queries to the log, even when the database profiler is off. When the profiler is on, it writes to the
system.profile
collection. See theprofile
command for more information on the database profiler.
-
--profile
<level>
¶ Default: 0
Changes the level of database profiling, which inserts information about operation performance into the
system.profile
collection. Specify one of the following levels:Level Setting 0 Off. No profiling. 1 On. Only includes slow operations. 2 On. Includes all operations. Database profiling can impact database performance. Enable this option only after careful consideration.
-
--cpu
¶
Forces the mongod process to report the percentage of CPU time in write lock, every four seconds.
-
--sysinfo
¶
Returns diagnostic system information and then exits. The information provides the page size, the number of physical pages, and the number of available physical pages.
-
--dbpath
<path>
¶ Default:
/data/db
on Linux and macOS,\data\db
on WindowsThe directory where the mongod instance stores its data.
If you installed MongoDB using a package management system, check the
/etc/mongod.conf
file provided by your packages to see the directory is specified.
-
--directoryperdb
¶
Stores each database’s files in its own folder in the data directory. When applied to an existing system, the
directoryPerDB
option alters the storage pattern of the data directory.Use this option in conjunction with your file system and device configuration so that MongoDB will store data on a number of distinct disk devices to increase write throughput or disk capacity.
Warning
To enable this option for an existing system, migrate the database-specific data files to the new directory structure before enabling
directoryPerDB
. Database-specific data files begin with the name of an existing database and end with either “ns
” or a number. For example, the following data directory includes files for thelocal
andtest
databases:After migration, the data directory would have the following structure:
-
--noIndexBuildRetry
¶
Stops the mongod from rebuilding incomplete indexes on the next start up. This applies in cases where the mongod restarts after it has shut down or stopped in the middle of an index build. In such cases, the mongod always removes any incomplete indexes, and then also, by default, attempts to rebuild them. To stop the mongod from rebuilding incomplete indexes on start up, include this option on the command-line.
-
--noprealloc
¶
Deprecated since version 2.6.
Disables the preallocation of data files. Currently the default. Exists for future compatibility and clarity.
-
--nssize
<value>
¶ Default: 16
Specifies the default size for namespace files, which are files that end in
.ns
. Each collection and index counts as a namespace.Use this setting to control size for newly created namespace files. This option has no impact on existing files. The maximum size for a namespace file is 2047 megabytes. The default value of 16 megabytes provides for approximately 24,000 namespaces.
-
--quota
¶
Enables a maximum limit for the number data files each database can have. When running with the
--quota
option, MongoDB has a maximum of 8 data files per database. Adjust the quota with--quotaFiles
.
-
--quotaFiles
<number>
¶ Default: 8
Modifies the limit on the number of data files per database.
--quotaFiles
option requires that you set--quota
.
-
--smallfiles
¶
Sets MongoDB to use a smaller default file size. The
--smallfiles
option reduces the initial size for data files and limits the maximum size to 512 megabytes.--smallfiles
also reduces the size of each journal file from 1 gigabyte to 128 megabytes. Use--smallfiles
if you have a large number of databases that each holds a small quantity of data.The
--smallfiles
option can lead the mongod instance to create a large number of files, which can affect performance for larger databases.
-
--syncdelay
<value>
¶ Default: 60
Controls how much time can pass before MongoDB flushes data to the data files via an fsync operation. Do not set this value on production systems. In almost every situation, you should use the default setting.
Warning
If you set
--syncdelay
to0
, MongoDB will not sync the memory mapped files to disk.The mongod process writes data very quickly to the journal and lazily to the data files.
syncPeriodSecs
has no effect on thejournal
files or journaling.The
serverStatus
command reports the background flush thread’s status via thebackgroundFlushing
field.
-
--upgrade
¶
Upgrades the on-disk data format of the files specified by the
--dbpath
to the latest version, if needed.This option only affects the operation of the mongod if the data files are in an old format.
In most cases you should not set this value, so you can exercise the most control over your upgrade process. See the MongoDB release notes (on the download page) for more information about the upgrade process.
-
--repair
¶
Runs a repair routine on all databases. This is equivalent to shutting down and running the
repairDatabase
database command on all databases.Warning
During normal operations, only use the
repairDatabase
command and wrappers includingdb.repairDatabase()
in themongo
shell andmongod --repair
, to compact database files and/or reclaim disk space. Be aware that these operations remove and do not save any corrupt data during the repair process.If you are trying to repair a replica set member, and you have access to an intact copy of your data (e.g. a recent backup or an intact member of the replica set), you should restore from that intact copy, and not use
repairDatabase
.When using journaling, there is almost never any need to run
repairDatabase
. In the event of an unclean shutdown, the server will be able to restore the data files to a pristine state automatically.Changed in version 2.1.2.
If you run the repair option and have data in a journal file, the mongod instance refuses to start. In these cases you should start the mongod without the
--repair
option, which allows the mongod to recover data from the journal. This completes more quickly and is more likely to produce valid data files. To continue the repair operation despite the journal files, shut down the mongod cleanly and restart with the--repair
option.The
--repair
option copies data from the source data files into new data files in therepairPath
and then replaces the original data files with the repaired data files.
-
--repairpath
<path>
¶ Default: A
_tmp
directory within the path specified by thedbPath
option.Specifies a working directory that MongoDB will use during the
--repair
operation. When--repair
completes,--repairpath
directory is empty, anddbPath
contains the repaired files.The
--repairpath
must be within thedbPath
. You can specify a symlink to--repairpath
to use a path on a different file system.
-
--objcheck
¶
Forces the mongod 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, the
--objcheck
option can have a small impact on performance. You can set--noobjcheck
to disable object checking at runtime.Changed in version 2.4: MongoDB enables the
--objcheck
option by default in order to prevent any client from inserting malformed or invalid BSON into a MongoDB database.
-
--noobjcheck
¶
New in version 2.4.
Disables the default document validation that MongoDB performs on all incoming BSON documents.
-
--noscripting
¶
Disables the scripting engine.
-
--notablescan
¶
Forbids operations that require a collection scan. See
notablescan
for additional information.
-
--journal
¶
Enables the durability journal to ensure data files remain valid and recoverable. This option applies only when you specify the . The mongod enables journaling by default on 64-bit builds of versions after 2.0.
-
--nojournal
¶
Disables the durability journaling. The mongod instance enables journaling by default in 64-bit versions after v2.0.
-
--journalOptions
<arguments>
¶ Provides functionality for testing. Not for general use, and will affect data file integrity in the case of abnormal system shutdown.
-
--journalCommitInterval
<value>
¶ Default: 100 or 30
The maximum amount of time the mongod process allows between journal operations. Values can range from 2 to 300 milliseconds. Lower values increase the durability of the journal, at the expense of disk performance.
The default journal commit interval is 100 milliseconds if a single block device (e.g. physical volume, RAID device, or LVM volume) contains both the journal and the data files.
If the journal is on a different block device than the data files the default journal commit interval is 30 milliseconds.
To force
mongod
to commit to the journal more frequently, you can specifyj:true
. When a write operation withj:true
is pending, mongod will reducecommitIntervalMs
to a third of the set value.
-
--shutdown
¶
The
--shutdown
option cleanly and safely terminates the mongod process. When invoking mongod with this option you must set the--dbpath
option either directly or by way of the configuration file and the--config
option.The
--shutdown
option is available only on Linux systems.
Replication Options¶
-
--replSet
<setname>
¶ Configures replication. Specify a replica set name as an argument to this set. All hosts in the replica set must have the same set name.
If your application connects to more than one replica set, each set should have a distinct name. Some drivers group replica set connections by replica set name.
-
--oplogSize
<value>
¶ Specifies a maximum size in megabytes for the replication operation log (i.e., the oplog). The mongod process creates an oplog based on the maximum amount of space available. For 64-bit systems, the oplog is typically 5% of available disk space. Once the mongod has created the oplog for the first time, changing the
--oplogSize
option will not affect the size of the oplog.See Oplog Size for more information.
-
--replIndexPrefetch
¶
Default: all
New in version 2.2.
Determines which indexes secondary members of a replica set load into memory before applying operations from the oplog. By default secondaries load all indexes related to an operation into memory before applying operations from the oplog. This option can have one of the following values:
Value Description none
Secondaries do not load indexes into memory. all
Secondaries load all indexes related to an operation. _id_only
Secondaries load no additional indexes into memory beyond the already existing _id
index.
Master-Slave Replication¶
These options provide access to conventional master-slave database replication. While this functionality remains accessible in MongoDB, replica sets are the preferred configuration for database replication.
-
--source
<host><:port>
¶ For use with the
--slave
option, the--source
option designates the server that this instance will replicate.
-
--only
<arg>
¶ For use with the
--slave
option, the--only
option specifies only a single database to replicate.
-
--slavedelay
<value>
¶ For use with the
--slave
option, the--slavedelay
option configures a “delay” in seconds, for this slave to wait to apply operations from the master node.
-
--autoresync
¶
For use with the
--slave
option. When set, the--autoresync
option allows this slave to automatically resync if it is more than 10 seconds behind the master. This setting may be problematic if the--oplogSize
specifies a too small oplog.If the oplog is not large enough to store the difference in changes between the master’s current state and the state of the slave, this instance will forcibly resync itself unnecessarily. If you don’t specify
--autoresync
, the slave will not attempt an automatic resync more than once in a ten minute period.
-
--fastsync
¶
In the context of replica set replication, set this option if you have seeded this member with an up-to-date copy of the entire
dbPath
of another member of the set. Otherwise the mongod will attempt to perform an initial sync, as though the member were a new member.Warning
If the data is not perfectly synchronized and the mongod starts with
fastsync
, then the secondary or slave will be permanently out of sync with the primary, which may cause significant consistency problems.
Sharded Cluster Options¶
-
--configsvr
¶
Declares that this mongod instance serves as the config database of a sharded cluster. When running with this option, clients (i.e. other cluster components) will not be able to write data to any database other than
config
andadmin
. The default port for a mongod with this option is27019
and the default--dbpath
directory is/data/configdb
, unless specified.Changed in version 2.2: The
--configsvr
option also sets--smallfiles
.Changed in version 2.4: The
--configsvr
option creates a local oplog.Do not use the
--configsvr
option with--replSet
or--shardsvr
. Config servers cannot be a shard server or part of a replica set.
-
--shardsvr
¶
Required if starting a shard server.
Configures this mongod instance as a shard in a sharded cluster. The default port for these instances is
27018
. The only effect of--shardsvr
is to change the port number.
-
--moveParanoia
¶
New in version 2.4.
Changed in version 2.6: Starting in 2.6, MongoDB uses
--moveParanoia
as the default.If specified, then during chunk migration, a shard saves, in the
moveChunk
directory under the--dbpath
directory, all documents migrated from that shard.MongoDB does not automatically delete the data saved in the
moveChunk
directory.
TLS/SSL Options¶
See
Configure mongod and mongos for TLS/SSL for full documentation of MongoDB’s support.
-
--sslOnNormalPorts
¶
Deprecated since version 2.6: Use
--sslMode requireSSL
instead.Enables TLS/SSL for mongod.
With
--sslOnNormalPorts
, a mongod requires TLS/SSL encryption for all connections on the default MongoDB port, or the port specified by--port
. By default,--sslOnNormalPorts
is disabled.The default distribution of MongoDB does not contain support for TLS/SSL. For more information on MongoDB and TLS/SSL, see Configure mongod and mongos for TLS/SSL.
-
--sslMode
<mode>
¶ New in version 2.6.
Enables TLS/SSL or mixed TLS/SSL used for all network connections. The argument to the
--sslMode
option can be one of the following:Value Description disabled
The server does not use TLS/SSL. allowSSL
Connections between servers do not use TLS/SSL. For incoming connections, the server accepts both TLS/SSL and non-TLS/non-SSL. preferSSL
Connections between servers use TLS/SSL. For incoming connections, the server accepts both TLS/SSL and non-TLS/non-SSL. requireSSL
The server uses and accepts only TLS/SSL encrypted connections. The default distribution of MongoDB does not contain support for TLS/SSL. For more information on MongoDB and TLS/SSL, see Configure mongod and mongos for TLS/SSL.
-
--sslPEMKeyFile
<filename>
¶ New in version 2.2.
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.When TLS/SSL is enabled, you must specify
--sslPEMKeyFile
.The default distribution of MongoDB does not contain support for TLS/SSL. For more information on MongoDB and TLS/SSL, see Configure mongod and mongos for TLS/SSL.
-
--sslPEMKeyPassword
<value>
¶ New in version 2.2.
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 mongod will redact the password from all logging and reporting output.Changed in version 2.6: If the private key in the PEM file is encrypted and you do not specify the
--sslPEMKeyPassword
option, the mongod will prompt for a passphrase. See SSL Certificate Passphrase.The default distribution of MongoDB does not contain support for TLS/SSL. For more information on MongoDB and TLS/SSL, see Configure mongod and mongos for TLS/SSL.
-
--clusterAuthMode
<option>
¶ Default: keyFile
New in version 2.6.
The authentication mode used for cluster authentication. If you use internal x.509 authentication, specify so here. This option can have one of the following values:
Value Description keyFile
Use a keyfile for authentication. Accept only keyfiles. sendKeyFile
For rolling upgrade purposes. Send a keyfile for authentication but can accept both keyfiles and x.509 certificates. sendX509
For rolling upgrade purposes. Send the x.509 certificate for authentication but can accept both keyfiles and x.509 certificates. x509
Recommended. Send the x.509 certificate for authentication and accept only x.509 certificates. The default distribution of MongoDB does not contain support for TLS/SSL. For more information on MongoDB and TLS/SSL, see Configure mongod and mongos for TLS/SSL.
-
--sslClusterFile
<filename>
¶ New in version 2.6.
Specifies the
.pem
file that contains the x.509 certificate-key file for membership authentication for the cluster or replica set.If
--sslClusterFile
does not specify the.pem
file for internal cluster authentication, the cluster uses the.pem
file specified in the--sslPEMKeyFile
option.The default distribution of MongoDB does not contain support for TLS/SSL. For more information on MongoDB and TLS/SSL, see Configure mongod and mongos for TLS/SSL.
-
--sslClusterPassword
<value>
¶ New in version 2.6.
Specifies the password to de-crypt the x.509 certificate-key file specified with
--sslClusterFile
. Use the--sslClusterPassword
option only if the certificate-key file is encrypted. In all cases, the mongod will redact the password from all logging and reporting output.If the x.509 key file is encrypted and you do not specify the
--sslClusterPassword
option, the mongod will prompt for a passphrase. See SSL Certificate Passphrase.The default distribution of MongoDB does not contain support for TLS/SSL. For more information on MongoDB and TLS/SSL, see Configure mongod and mongos for TLS/SSL.
-
--sslCAFile
<filename>
¶ New in version 2.4.
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.The default distribution of MongoDB does not contain support for TLS/SSL. For more information on MongoDB and TLS/SSL, see Configure mongod and mongos for TLS/SSL.
Warning
If the
--sslCAFile
option and its target file are not specified, x.509 client and member authentication will not function.mongod
, andmongos
in sharded systems, will not be able to verify the certificates of processes connecting to it against the trusted certificate authority (CA) that issued them, breaking the certificate chain.As of version 2.6.4,
mongod
will not start with x.509 authentication enabled if the CA file is not specified.
-
--sslCRLFile
<filename>
¶ New in version 2.4.
Specifies the
.pem
file that contains the Certificate Revocation List. Specify the file name of the.pem
file using relative or absolute paths.The default distribution of MongoDB does not contain support for TLS/SSL. For more information on MongoDB and TLS/SSL, see Configure mongod and mongos for TLS/SSL.
-
--sslAllowInvalidCertificates
¶
New in version 2.6.4.
Bypasses the validation checks for TLS/SSL certificates on other servers in the cluster and allows the use of invalid certificates. When using the
allowInvalidCertificates
setting, MongoDB logs as a warning the use of the invalid certificate.The default distribution of MongoDB does not contain support for TLS/SSL. For more information on MongoDB and TLS/SSL, see Configure mongod and mongos for TLS/SSL.
-
--sslWeakCertificateValidation
¶
New in version 2.4.
Disables the requirement for TLS/SSL certificate validation that
--sslCAFile
enables. With the--sslWeakCertificateValidation
option, the mongod will accept connections when the client does not present a certificate when establishing the connection.If the client presents a certificate and the mongod has
--sslWeakCertificateValidation
enabled, the mongod will validate the certificate using the root certificate chain specified by--sslCAFile
and reject clients with invalid certificates.Use the
--sslWeakCertificateValidation
option if you have a mixed deployment that includes clients that do not or cannot present certificates to the mongod.The default distribution of MongoDB does not contain support for TLS/SSL. For more information on MongoDB and SSL, see Configure mongod and mongos for TLS/SSL.
-
--sslDisabledProtocols
<protocol(s)>
¶ New in version 2.6.12.
Prevents a MongoDB server running with SSL from accepting incoming connections that use a specific protocol or protocols.
--sslDisabledProtocols
recognizes the following protocols:TLS1_0
,TLS1_1
, andTLS1_2
. Specifying an unrecognized protocol will prevent the server from starting.To specify multiple protocols, use a comma separated list of protocols.
Members of replica sets and sharded clusters must speak at least one protocol in common.
See also
-
--sslFIPSMode
¶
New in version 2.4.
Directs the mongod to use the FIPS mode of the installed OpenSSL library. Your system must have a FIPS compliant OpenSSL library to use the
--sslFIPSMode
option.The default distribution of MongoDB does not contain support for TLS/SSL. For more information on MongoDB and TLS/SSL, see Configure mongod and mongos for TLS/SSL.
Audit Options¶
-
--auditDestination
¶
New in version 2.6.
Enables auditing. The
--auditDestination
option can have one of the following values:Value Description syslog
Output the audit events to syslog in JSON format. Not available on Windows. Audit messages have a syslog severity level of
info
and a facility level ofuser
.The syslog message limit can result in the truncation of audit messages. The auditing system will neither detect the truncation nor error upon its occurrence.
console
Output the audit events to stdout
in JSON format.file
Output the audit events to the file specified in --auditPath
in the format specified in--auditFormat
.Note
Available only in MongoDB Enterprise.
-
--auditFormat
¶
New in version 2.6.
Specifies the format of the output file for auditing if
--auditDestination
isfile
. The--auditFormat
option can have one of the following values:Value Description JSON
Output the audit events in JSON format to the file specified in --auditPath
.BSON
Output the audit events in BSON binary format to the file specified in --auditPath
.Printing audit events to a file in JSON format degrades server performance more than printing to a file in BSON format.
Note
Available only in MongoDB Enterprise.
-
--auditPath
¶
New in version 2.6.
Specifies the output file for auditing if
--auditDestination
has value offile
. The--auditPath
option can take either a full path name or a relative path name.Note
Available only in MongoDB Enterprise.
-
--auditFilter
¶
New in version 2.6.
Specifies the filter to limit the types of operations the audit system records. The option takes a string representation of a query document of the form:
The
<field>
can be any field in the audit message, including fields returned in the param document. The<expression>
is a query condition expression.To specify an audit filter, enclose the filter document in single quotes to pass the document as a string.
To specify the audit filter in a configuration file, you must use the YAML format of the configuration file.
Note
Available only in MongoDB Enterprise.
SNMP Options¶
-
--snmp-subagent
¶
Runs SNMP as a subagent. For more information, see Monitor MongoDB With SNMP on Linux.
-
--snmp-master
¶
Runs SNMP as a master. For more information, see Monitor MongoDB With SNMP on Linux.