MongoDB Start Command mongod parameter description

The main parameters of Mongod are:

Basic Configuration

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--quiet # Quiet Output
--portarg # Specify the service port number, default port 27017
--BIND_IPARG # Bind Service IP, if bind 127.0.0.1, then only native access, do not specify default local all IP
--logpatharg # Specifies the MongoDB log file, note that the specified file is not a directory
--logappend # Write a log using an Append method
--pidfilepatharg # The full path of the PID file, if not set, there are no PID files
--keyfilearg # Full path to the private key of the cluster, valid only for the replica Set schema
--unixsocketprefixarg # 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
--dbpatharg # Specifying the database path
--diaglogarg # 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
--journaloptionsarg # Enable Log diagnostics option
--ipv6 # Enable IPV6 option
--JSONP # allows JSONP form to be accessed via HTTP (with security implications)
--maxconnsarg # Maximum number of simultaneous connections default 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 #禁用Unix套接字监听
--nssize Arg (=16) # Set the message database. ns File Size (MB)
--objcheck # in the receipt of customer data, check the validity of
--profilearg # File Parameters 0=off 1=slow, 2=all
--quota # Limit the number of files per database, set default to 8
--quotafilesarg # Number of files Allower per db, Requires--quota
--rest # Open a simple rest API
--repair # repair All databases run repair on all DBS
--repairpatharg # Fix the 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 your 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
--oplogsizearg # Setting the size of Oplog (MB)
* Master/slave parameters

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--master # Main Library mode
--slave # from Library mode
--sourcearg # from the library port number
--onlyarg # Specifying a single database copy
--slavedelayarg # Setting the delay time for synchronizing the main library from the library

* Replica set (replica set) option:

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--replsetarg # Set the 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/logs/shard1a.log-logappend-fork-rest

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