Parameter description of the Mongod command

The main parameters of Mongod are:

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# Write a log using an Append method

--pidfilepath Arg# The full path of the PID file, if not set, there are no PID files

--keyfile Arg# The full path of the private key of the cluster, valid only for the replica Set schema

--unixsocketprefix arg# UNIX domain socket replacement directory (default =/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# Specifies the database path

--diaglog arg# diaglog option 0=off 1=w 2=r 3=both 7=w+some reads

--directoryperdb# Set each database to be saved in a separate directory

--journal# Enable logging option, MONGODB data operations will be written to the files in the Journal folder

--journaloptions arg# Enable log diagnostics option

--ipv6# enable IPV6 option

--jsonp# allows JSONP form to be accessed via HTTP (with security implications)

--maxconns arg# maximum simultaneous connections default of 2000

--noauth# do not enable validation

--nohttpinterface# Turn off HTTP interface, turn off 27018 port access by default

--noprealloc# Disabling data file pre-allocation (often impacting performance)

--noscripting# Disabling the scripting engine

--notablescan# do not allow table scans

--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 parameter 0=off 1=slow, 2=all

--quota# Limit the number of files per database, set 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 arg# Fix directory of files generated by the library, default to 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 parameter

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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 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# Specifies a single database copy

--slavedelay arg# Sets the delay time for synchronizing the main library from the library * Replica set (replica set) option:

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--replset arg# set replica set name * sharding (shard) option

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--CONFIGSVR# Declare 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# Turn off paranoid for movechunk data save

# The above parameters can be written in the mongod.conf configuration document for example:

DBPath =/data/mongodb

LogPath =/data/mongodb/mongodb.log

Logappend = True

Port = 27017

Fork = True

Auth = True

e.g:

./mongod-shardsvr-replset Shard1-port 16161-dbpath/data/mongodb/data/shard1a-oplogsize 100-logpath/data/mongodb/l Ogs/shard1a.log-logappend-fork-rest

Parameter description of the Mongod command