Shulou(Shulou.com)06/01 Report--

Description:

MongoDB is a cross-platform, document-oriented database. High performance, high availability, and easy scalability. Is an open source database system based on distributed file storage, in the case of high load, add more nodes, can ensure server performance.

MongoDB is also a product between relational databases and non-relational databases, the most feature-rich and most relational of the non-relational databases. MongoDB no longer has the concept of "rows," and its operation mode is mainly based on two concepts: collections and documents.

.

.

Environment: Centos 7

.

.

The experimental procedure is as follows:

.

.

1 . Configure yum source repository

cd /etc/yum.repos.d/ #Enter this directory

vim mongodb-org.repo #Enter the following into the configuration file:

[mongodb-org] #Name

name=MongoDB Repository

baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/3.6/x86_64/ #yum Source

gpgcheck=1

enabled=1

gpgkey=https://www.mongodb.org/static/pgp/server-3.6.asc #Verify

.

.

2 . yum source saved after exit

yum list #Load it

yum install mongodb-org -y #Install mongodb

vim /etc/mongod.conf #After installation, enter the configuration file and change it as follows

....

port: 27017 #port

bindIp: 0.0.0.0 #Listening address

....

.

.

3 . This completes the installation.

systemctl stop firewalld.service

setenforce 0 #turn off firewall and features

systemctl start mongod.service #Open mongodb

mongo #Enter mongodb

.

.

4 . Add an example below

cd /etc/

cp -p mongod.conf mongod2.conf #Create a configuration file for the instance, where you can copy the mongodb configuration file

vim mongod2.conf #Enter the instance configuration file to configure, mainly changing three points

path: /data/mongodb/mongod2.log #Log file location

dbPath: /data/mongodb/mongo #Data file location

port: 27018 #port

.

.

5 . Create instance file

mkdir -p /data/mongodb #Create file directory

The requested URL/data/mongodb/was not found on this server.

mkdir mongo #Create a directory of data files

touch mongod2.log #Create log file directory

chmod 777 mongod2.log #Grant log file permissions

mongod -f /etc/mongod2.conf #Open Instance

mongo --port 27018 #Enter instance

.

.

.

mongodb installation and add instance operation completed, there are also simple instructions on the basic operation command

.

.

show dbs #View database

.

show tables #View Collections

.

db.info.find() #View data in a collection

.

use school #enters the database, if there is no database, it will be created

.

db.copyDatabase("school","school2") #Copy Database

.

db.version() #View Version

.

db.createCollection ('info ') #Create a collection info

.

db.info.insert ({"id":1,"name":"zhao"}) #Insert data into a collection

.

db.info.drop() #Delete collection

.

db.dropDatabase() #Advanced database, delete this database

.

mongoexport -d school -c info -o/opt/school.json #Export to specified file

.

mongoimport -d school -c test --file/opt/school.json #import

.

mongoexport -d school -c info -q '{"id":{"$eq":10}' -o/opt/top10.json #Export specified line, this example has 10 lines

.

mkdir /backup

mongodump -d school -o /backup/ #backup to file

.

mongostore-d school2 --dir-/backup/school #restore

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.