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This article introduces you to Mongdb startup basic configuration is how, the content is very detailed, interested friends can refer to, hope to help you.

1. Parameter explanation: --dbpath database path (data file)

--logpath Log file path

--master designated as master

--slave specified as slave machine

--source Specifies the IP address of the host

--pologSize specifies that the log file size does not exceed 64M. Because resync is very laborious and time-consuming, it is best to avoid resync by setting a sufficiently large oplog Size (the default oplog size is 5% of the free disk size).

--logappend Add to end of log file

--port Enable port number

--fork runs in the background

--only Specifies which database to copy only

--slavedelay refers to the time interval from replication detection

--auth Does authentication permission need to be logged in (username and password)

-h [ --help ] show this usage information

--version show version information

-f [ --config ] arg configuration file specifying additional options

--port arg specify port number

--bind_ip arg local ip address to bind listener - all local ips

bound by default

-v [ --verbose ] be more verbose (include multiple times for more

verbosity e.g. -vvvvv)

--dbpath arg (=/data/db/) directory for datafiles

--quiet quiet output

--logpath arg file to send all output to instead of stdout

--logappend appnd to logpath instead of over-writing Specifies whether logs are written to the log file as appends or overwrites

--fork fork server process runs as a child process

--cpu periodically show cpu and iowait utilization

--noauth run without security

--auth run with security

--objcheck inspect client data for validity on receiptCheck validity of client input data

--quota enable db quota management Start database quota management

--quotaFiles arg number of files allow per db, requires --quota Specifies the number of files allowed per database

--appsrvpath arg root directory for the babble app server

--alarms diagnostic/debugging option

--nohints ignore query hints Ignore query hits

--nohttpinterface disable http interface Close http interface, default is 28017

--noscribing disable scripting engine shutdown scripting engine

--noprealloc disable data file preallocation Turn off database file size preallocation

--smallfiles use a smaller default file size

--nssize arg (=16) .ns file size (in MB) for new databases Default size of ns files for new databases

--diaglog arg 0=off 1=W 2=R 3=both 7=W+some reads The mode provided is read-only, write-only, both read-write, or mainly write-+ partial read mode.

--sysinfo print some diagnostic system information Print system diagnostic information

--upgrade db if needed Update database if needed

--repair run repair on all dbs

--notablescan do not allow table scans

--syncdelay arg (=60) seconds between disk syncs (0 for never) The time it takes for the system to synchronously refresh the disk, the default is 60s

Replication options:

--master mode master copy mode

--slave slave mode

--source arg when slave: specify master as When slave, specify master address and port

--only arg when slave: specify a single database to replicate When slave, specify a single database to replicate from master

--pairwith arg address of server to pair with

--arbiter arg address of arbiter server, used in host and pair

--autosync automatically resync if slave data is stale autosync de datos de la

--oplogSize arg size limit (in MB) for op log Specifies the size of the operation log

--opIdMem arg size limit (in bytes) for in memory storage of op ids Specifies the size of memory to store operation logs

Sharding options:

--configsvr declare this is a config db of a cluster Specify the configuration server in the shard

--shardsvr declare this is a shade db of a cluster Specify shade server

2. Enter CLI administration interface of database

cd to bin folder under mongodb directory, execute command./ mongo

Run as follows:

[root@namenode mongodb]# ./ bin/mongo

MongoDB shell version: 1.8.2

connecting to: test

> use test;

switched to db test

If the database appears such as can not be connected, it is a data directory under the mongod.lock file problem, you can use the following repair command,

mongod --repair

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