MongoDB Start Command mongod parameter description

MongoDB Start Command mongod parameter description

The main parameters of Mongod are:

Basic configuration:

--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 your database

* Replicaton Parameters

--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

--master# Main Library mode --slave# from Library mode --source Arg# from the library port number --only arg# Specifies a single database copy --slavedelay arg# Setting the delay time for synchronizing the main library from the library

* Replica set (replica set) option:

--replset arg# Sets the replica set name

* sharding (Shard) option

--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/mongo Db/logs/shard1a.log-logappend-fork-rest

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MongoDB Start Command mongod parameter description