Overview

These templates use ss_get_by_ssh.php to connect to a server via SSH and extract statistics from the MongoDB server running there, by executing the "serverStatus" admin command from the MongoDB shell. This means that the mongo CLI needs to be in $PATH and you must be running version 1.2+ of MongoDB.

This document should be correct and complete as of version 1.1.8 of the graphs. Please use the issue tracker or the mailing list to report any errors or omissions. If you have any sample graphs that are better than those shown, please contribute!

Installation

Once the SSH setup is working, confirm that you can login to MongoDB from with the "mongo" cli tool. From this tool, confirm that serverStatus command is present by running:

db._adminCommand({serverStatus : 1});

This should produce quite a bit of output. With all of this confirmed, test one of your hosts with the command below. You may need to change some of the example values below, such as the cacti username and the hostname you're connecting to.

su - cacti -c 'env -i php /var/www/cacti/scripts/ss_get_by_ssh.php --type mongodb --host 127.0.0.1 --items dc,dd'

Background Flushes

Commands

Connections

Index Operations

Memory

Presentation: Why MongoDB is Awesome

by Alex Popescu

• Tags: 
• presentation,
• mongodb,

   

May 19th, 2010

Nicely structured MongoDB intro by John Nunemaker: Easy to try, Easy to understand and Easy to learn:

Why MongoDB is awesome

View more presentations from John Nunemaker.

Why MongoDB is awesome
아래는 PT 파일의 PDF 버전입니다. 

whymongodbisawesome.pdf

#Start MongoDB as a daemon on port 27017

port = 27017 # 포트

fork = true # 데몬모드

logpath = /usr/mongodb/log/default.log #로그파일 위치

dbpath = /usr/mongodb/data/db  # DB 파일의 path

rest = true #rest 지원

...................

넣고 싶은 옵션들을 주저리 주저리 넣어줍니다.

-------------------------------------------------------------------------------------------

그리고, mongoDB를 실행해 줍니다. 

[root@mongoserver]# mongod --config /mongodb/config/mongo.conf

몽고DB가 깔끔하게 실행됩니다. 

Allowed options:

General options:

  -h [ --help ]         show this usage information

  --version             show version information

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

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

                        verbosity e.g. -vvvvv)

  --quiet               quieter output

  --port arg            specify port number

  --bind_ip arg         comma separated list of ip addresses to listen on - all

                        local ips by default

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

  --logappend           append to logpath instead of over-writing

  --pidfilepath arg     full path to pidfile (if not set, no pidfile is

                        created)

  --fork                fork server process

  --dbpath arg          directory for datafiles

  --directoryperdb      each database will be stored in a separate directory

  --repairpath arg      root directory for repair files - defaults to dbpath

  --cpu                 periodically show cpu and iowait utilization

  --noauth              run without security

  --auth                run with security

  --objcheck            inspect client data for validity on receipt

  --quota               enable db quota management

  --quotaFiles arg      number of files allower per db, requires --quota

  --appsrvpath arg      root directory for the babble app server

  --nocursors           diagnostic/debugging option

  --nohints             ignore query hints

  --nohttpinterface     disable http interface

  --rest                turn on simple rest api

  --noscripting         disable scripting engine

  --noprealloc          disable data file preallocation

  --smallfiles          use a smaller default file size

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

  --diaglog arg         0=off 1=W 2=R 3=both 7=W+some reads

  --sysinfo             print some diagnostic system information

  --upgrade             upgrade db if needed

  --repair              run repair on all dbs

  --notablescan         do not allow table scans

  --syncdelay arg (=60) seconds between disk syncs (0=never, but not

                        recommended)

  --profile arg         0=off 1=slow, 2=all

  --slowms arg (=100)   value of slow for profile and console log

  --maxConns arg        max number of simultaneous connections

  --nounixsocket        disable listening on unix sockets

  --ipv6                enable IPv6 support (disabled by default)

Replication options:

  --master              master mode

  --slave               slave mode

  --source arg          when slave: specify master as <server:port>

  --only arg            when slave: specify a single database to replicate

  --pairwith arg        address of server to pair with

  --arbiter arg         address of arbiter server

  --slavedelay arg      specify delay (in seconds) to be used when applying

                        master ops to slave

  --fastsync            indicate that this instance is starting from a dbpath

                        snapshot of the repl peer

  --autoresync          automatically resync if slave data is stale

  --oplogSize arg       size limit (in MB) for op log

  --opIdMem arg         size limit (in bytes) for in memory storage of op ids

Sharding options:

  --configsvr           declare this is a config db of a cluster

  --shardsvr            declare this is a shard db of a cluster

  --noMoveParanoia      turn off paranoid saving of data for moveChunk.  this

                        is on by default for now, but default will switch

   > db.factories.insert( { name: "xyz", metro: { city: "New York", state: "NY" } } );
   > db.factories.ensureIndex( { metro : 1 } );
     // this query can use the above index:
   > db.factories.find( { metro: { city: "New York", state: "NY" } } );