Mongodb startup command mongod parameter description

basic configuration -------------------------------------------------------------------------------- --quiet # quiet output --port arg # Specify the service port number, the default port is 27017 --bind_ip arg # Bind the service IP. If you bind to 127.0.0.1, you can only access it locally. Do not specify all the default local IPs. --logpath arg # Specify the MongoDB log file, note that the specified file is not a directory --logappend # write log using append --pidfilepath arg # The full path of the PID File, if not set, there is no PID file --keyFile arg # The full path to the private key of the cluster, only valid for Replica Set architecture --unixSocketPrefix arg # UNIX domain socket alternative directory, (defaults to /tmp) --fork # Run MongoDB as a daemon and create a server process --auth # enable validation --cpu # Periodically display the CPU utilization and iowait of the CPU --dbpath arg # Specify the database path --diaglog arg # diaglog选项 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 the journal option, MongoDB data operations will be written to the files in the journal folder --journalOptions arg # Enable log diagnostic options --ipv6 # enable IPv6 options --jsonp # Allow JSONP access via HTTP (with security implications) --maxConns arg # The maximum number of simultaneous connections defaults to 2000 --noauth # disable validation --nohttpinterface # Close the http interface, the default port 27018 is closed --noprealloc # Disable datafile preallocation (often affects performance) --noscripting # disable script engine --notablescan # Disallow table scans --nounixsocket # Disable Unix socket listening --nssize arg (=16) # Set the letter database.ns file size (MB) --objcheck # After receiving customer data, check the validity, --profile arg # File parameters 0=off 1=slow, 2=all --quota # Limit the number of files per database, the default setting is 8 --quotaFiles arg # number of files allower per db, requires --quota --rest # Enable simple rest API --repair # Repair all databases run repair on all dbs --repairpath arg # Repair the directory of the files generated by the library, the default is the directory name dbpath --slowms arg (= 100) # value of slow for profile and console log --smallfiles # use smaller default file --syncdelay arg (= 60) # The time in seconds for data to be written to disk (0=never, not recommended) --sysinfo # print some diagnostic system information --upgrade # If you need to upgrade the database * Replicaton parameter -------------------------------------------------------------------------------- --fastsync # Enable the slave library replication service from a dbpath whose database is a snapshot of the master library, which can be used to quickly enable synchronization --autoresync # Automatically resynchronize if the slave is much worse than the master sync data, --oplogSize arg # Set oplog size (MB) * Master/Slave parameters -------------------------------------------------------------------------------- --master # main library mode --slave # Slave mode --source arg # Slave port number --only arg # Specify single database replication --slavedelay arg # Set the delay time for the slave library to synchronize the master library * Replica set options: -------------------------------------------------------------------------------- --replSet arg # Set the replica set name * Sharding option -------------------------------------------------------------------------------- --configsvr # Declare this as a cluster config service, default port 27019, default directory /data/configdb --shardsvr # declare that this is a cluster shard, default port 27018 --noMoveParanoia # Turn off paranoia for moveChunk data saving # All of the above parameters can be written into the mongod.conf configuration file. 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