MongoDB Mongod Parameter explanation

Basic Configuration
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--quiet# Quiet Output
--port arg# Specify the service port number, default ports 27017
--BIND_IP arg# bind service IP, if bind 127.0.0.1, then only native access, do not specify default local all IP
--logpath arg# Specifies the MongoDB log file, note that the specified file is not a directory
--logappend# writing the log using the Append method
--pidfilepath arg# The full path of the PID file, if not set, there is no PID files
--keyfile the full path of the private key of the arg# cluster, valid only for replica Set schemas
--unixsocketprefix arg# UNIX domain socket replacement directory, (default is/tmp)
--fork# running MongoDB as a daemon, creating a server process
--auth# Enable validation
--cpu# periodically displays CPU utilization and iowait for CPUs
--dbpath arg# specifying the database path
--diaglog arg# diaglog Options 0=off 1=w 2=r 3=both 7=w+some reads
--directoryperdb# setting each database will be saved in a separate directory
--journal# Enable logging option, MONGODB data operation will be written to the file in the Journal folder
--journaloptions arg# Enable log diagnostic options
--ipv6# Enable IPV6 option
--jsonp# allow JSONP form to be accessed via HTTP (with security implications)
--maxconns arg# Maximum number of simultaneous connections default 2000
--noauth# does not enable validation
--nohttpinterface# shut down HTTP interface, 27018 port access is turned off by default
--noprealloc# Disabling data file pre-allocation (often impacting performance)
--noscripting# Disabling the scripting engine
--notablescan# table Scan not allowed
--nounixsocket# Disabling UNIX socket snooping
--nssize Arg (=16) # Set the message database. ns File Size (MB)
--objcheck# in the receipt of customer data, check the validity of
--profile arg# file Parameters 0=off 1=slow, 2=all
--quota# limit the number of files per database, set the default to 8
--quotafiles arg# number of files Allower per db, requires--quota
--rest# open a simple rest API
--repair# repair all databases run repair on all DBS
--repairpath the directory of files generated by the arg# repair Library, which defaults to the directory name DBPath
--slowms Arg (=100) # Value of slow for profile and console log
--smallfiles# using a smaller default file
--syncdelay Arg (=60) # Number of seconds data written to disk (0=never, not recommended)
--sysinfo# Print some diagnostic system Information
--upgrade# If you need to upgrade the database

* Replicaton Parameters
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--fastsync# from a dbpath to enable the Copy service from the library, the DBPath database is a snapshot of the main library and can be used to quickly enable synchronization
--autoresync# if synchronizing data from the library to the main library is much worse, automatic resynchronization
--oplogsize arg# Setting the size of the Oplog (MB)

* Master/slave parameters
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--master# Main Library Mode
--slave# from Library mode
--source arg# from the library port number
--only arg# specifying a single database copy
--slavedelay arg# Setting the delay time for synchronizing the main library from the library

* Replica set (replica set) option:
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--replset arg# Set the replica set name

* sharding (Shard) option
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--configsvr# declaration This is a clustered config service, default port 27019, default directory/data/configdb
--shardsvr# declares that this is a clustered shard, the default port 27018
--nomoveparanoia# off paranoid for movechunk data save

Thank you: Http://www.uspcat.com/forum.php?mod=viewthread&tid=7722&extra=page

MongoDB Mongod Parameter explanation