MongoDB Installation and simple configuration

1. Upload the downloaded installation package to the lniux server or curl -O https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-3.0.6.tgz
2.tar -zxvf mongodb-linux-x86_64-3.0.6.tgz
3.mv mongodb-linux-x86_64-3.0.6 / / usr / local / mongodb # Copy the unzipped package to the specified directory
4. Create a corresponding folder in the specified directory to store data and log files of mongoDB, for example: create in the / usr / local / mongodb directory
/ usr / local / mongodb / data, used to store data, create / usr / local / mongodb / logs to store logs,
5.Execute / usr / local / mongodb / bin / mongod --port 27017 --fork --dbpath = / usr / local / mongodb / data / --logpath = / usr / local / mongodb / logs / mongodb.log- -logappend
The following text appears as a command success.
about to fork child process, waiting until server is ready for connections.
forked process: 8533
You can execute: ps aux | grep mongodb or pstree -p | grep mongod
Or execute netstat -lanp | grep "27017"
If this happens
 tcp 0 0 0.0.0.0:27017 0.0.0.0:* LISTEN 8533 / mongod unix 2
[ACC] STREAM LISTENING 75204 8533 / mongod /tmp/mongodb-27017.sock
You can also view the log file in logs. MongoDB shell version: 3.0.6 connecting to: test appears after executing ./mongo into the console
6. Stop the mongodb command db.shutdownServer () This command can be used only after using the admin user
7. ./mongod --dbpath = / usr / local / mongodb / data / db --rest command You can enter http: // localhost: 28017 in the browser on the virtual machine to display the interface service.


Explanation of startup parameters

Description of the common parameter options of the startup command:

--dbpath Specify the directory of the database

--port specifies the port of the database, the default is 27017

--bind_ip bind IP

--logpath Specify the log storage directory

--logappend Specify log generation method (append / overwrite)

--pidfilepath: Specify the path to the process file. If not specified, the process file will not be generated.

--keyFile Private key for cluster mode authorization verification

--journal enable logging

--nssize: Specify the size of the .ns file in MB. The default is 16M and the maximum is 2G.

--maxConns The maximum number of connections is not

--notablescan table scan is not allowed

--noprealloc Turn off the pre-allocation of data files

--fork Run the service as a background Daemon

For more parameter options, use mongod --help to view
War Displayed in the log when starting up 4Waring:

** WARNING: Readahead for / usr / local / mongodb is set to 4096KB
We suggest setting it to 256KB (512 sectors) or less
http://dochub.mongodb.org/core/readahead

** WARNING: You are running this process as the root user, which is not recommended.

** WARNING: / sys / kernel / mm / transparent_hugepage / enabled is ‘always’.
We suggest setting it to ‘never’

** WARNING: / sys / kernel / mm / transparent_hugepage / defrag is ‘always’.
We suggest setting it to ‘never’


① Refer to the official website tips:

Ensure that the read-ahead settings for the block device used to store the data files are appropriate. For random access mode, set a low read-ahead value. A read-ahead value of 32 (16kb) usually works well.

For standard block devices, you can run sudo blockdev --report to get the read-ahead value setting, and run sudo blockdev --setra <value> <value> to change the read-ahead value setting.

Refer to your specific operating system manual for more information.

 

In fact, after running blockdev --report, a few lines of information are displayed, excluding non-4096, but this way it is impossible to determine which block device is used to store the data file.

Use df -h to view the file system information. You can see that the largest capacity is our hard disk. Use it to store data files.

 

Run blockdev --setra 256 your drive letter name (eg: / dev / sda2).

 

② The second one is completely negligible.

③④ Follow the recommended settings and refer to the setting methods:

https://docs.mongodb.org/manual/tutorial/transparent-huge-pages/

https://oracle-base.com/articles/linux/configuring-huge-pages-for-oracle-on-linux-64#disabling-transparent-hugepages

Here I directly add the following to the end of rc.local, boot settings and start automatically:
If the current manual change, verify whether [always] madvise never becomes always madvise [never]

cat / sys / kernel / mm / transparent_hugepage / enabled
 
Specific operation:

First, close SElinux, configure the firewall

1.vi / etc / selinux / config

# SELINUX = enforcing #comment out

# SELINUXTYPE = targeted #Commented out

SELINUX = disabled #Increase

: wq! #Save and exit

setenforce 0 #Make the configuration take effect immediately

2.vi / etc / sysconfig / iptables #edit

-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 27017 -j ACCEPT #Allow port 27017 to pass through the firewall

: wq! #Save and exit

/etc/init.d/iptables restart #Restart the firewall for the configuration to take effect

Install MongoDB

MongoDB: https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-3.0.6.tgz #Current version

Upload mongodb-linux-x86_64-3.0.6.tgz to the / usr / local / src directory

cd / usr / local / src #Enter the software storage directory

tar zxvf mongodb-linux-x86_64-3.0.6.tgz #decompress

mv mongodb-linux-x86_64-3.0.6 / usr / local / mongodb #Move the unzipped folder to the MongoDB installation directory

mkdir -p / data / mongodb / mongodb_data / #Create MongoDB database storage path

mkdir -p / data / mongodb / mongodb_log / #Create MongoDB database log storage path

#Start MongoDB

/ usr / local / mongodb / bin / mongod --port 27017 --fork --dbpath = / data / mongodb / mongodb_data / --logpath = / data / mongodb / mongodb_log / mongodb.log --logappend

netstat -lanp | grep "27017" #Check if MongoDB is started

cd / usr / local / mongodb / bin /

./mongo #Enter the MongoDB database console

use admin #Enter the admin database

db.shutdownServer () #Shut down the MongoDB database

exit #Exit

Setting up the MongoDB database

1.cd / usr / local / mongodb / #Enter the MongoDB installation directory

vi /usr/local/mongodb/mongodb.conf #edit

port = 27017 #Port number

dbpath = / data / mongodb / mongodb_data / #Database path

logpath = / data / mongodb / mongodb_log / mongodb.log #log output file path

pidfilepath = / usr / local / mongodb / mongo.pid

fork = true #Set the background to run

logappend = true #Log output mode

shardsvr = true

# auth = true #Enable authentication

: wq! #Save and exit

Cd / usr / local / mongodb / bin /

/ usr / local / mongodb / bin / mongod --config /usr/local/mongodb/mongodb.conf #Start MongoDB

/ usr / local / mongodb / bin / mongo 127.0.0.1:27017/admin --eval "db.shutdownServer ()" #Shut down MongoDB

vi /etc/rc.d/init.d/mongod #Set the startup and start MongoDB

ulimit -SHn 655350

#! / bin / sh

# chkconfig:-64 36

# description: mongod

case $ 1 in

start)

/ usr / local / mongodb / bin / mongod --maxConns 20000 --config /usr/local/mongodb/mongodb.conf

;;

stop)

/ usr / local / mongodb / bin / mongo 127.0.0.1:27017/admin --eval "db.shutdownServer ()"

;;

status)

/ usr / local / mongodb / bin / mongo 127.0.0.1:27017/admin --eval "db.stats ()"

;;

esac

: wq! #Save and exit

chmod + x /etc/rc.d/init.d/mongod #Add script execution permissions

chkconfig mongod on #Set boot

service mongod start #Start MongoDB

Note: If an administrator account password is set, use the following command

Account: root

Password: 123456

/ usr / local / mongodb / bin / mongo 127.0.0.1:27017/admin --eval "db.auth (‘ root ‘,‘ 123456 ‘); db.shutdownServer ()"

/ usr / l
ocal / mongodb / bin / mongo 127.0.0.1:27017/admin --eval "db.auth (‘ root ‘,‘ 123456 ‘); db.stats ()"

3, vi / etc / profile #Add environment variables, edit, add the following code in the last line

export PATH = $ PATH: / usr / local / mongodb / bin

: wq! #Save and exit

source / etc / profile #Make the configuration take effect immediately

mongo #Enter the MongoDB console

show dbs #View the default database

use admin #Switch to the admin database

exit #Exit the MongoDB console

At this point, the MongoDB database installation and configuration are complete.
 

mongodb installation and simple configuration