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Brief introduction

MongoDB is a NoSQL database based on distributed file storage.

Written by C++ language, stable operation and high performance

Designed to provide scalable, high-performance data storage solutions for WEB applications

Check out the official website

Characteristics of MongoDB

Schema freedom: documents with different structures can be stored in the same database

Collection-oriented storage: suitable for storing JSON-style files

Full index support: indexable on any attribute

Replication and high availability: support data replication between servers, support master-slave mode and mutual replication between servers. The main purpose of replication is to provide redundancy and automatic failover

Automatic sharding: supports cloud-level scalability: automatic sharding supports horizontal database clusters and can dynamically add additional machines

Rich queries: support rich query expressions. Query instructions use tags in the form of JSON, and you can easily query embedded objects and arrays in documents.

Quick in-place update: the query optimizer parses the query expression and generates an efficient query plan

Efficient traditional storage: supports binary data and large objects (such as photos or pictures)

Packages package description

The MongoDB official source contains the following dependency packages:

Mongodb-org: MongoDB meta-package, which automatically installs the following four component packages during installation:

1.mongodb-org-server: contains the MongoDB daemon and related configuration and initialization scripts.

2.mongodb-org-mongos: a daemon that contains mongos.

3.mongodb-org-shell: contains mongo shell.

4.mongodb-org-tools: tools containing MongoDB: mongoimport, bsondump, mongodump, mongoexport, mongofiles, mongooplog, mongoperf, mongorestore, mongostat, and mongotop.

Installation steps

1. Configure the yum source for MongoDB

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Vim / etc/yum.repos.d/mongodb-org-3.4.repo

# add the following:

[mongodb-org-3.4]

Name=MongoDB Repository

Baseurl= https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/3.4/x86_64/

Gpgcheck=1

Enabled=1

Gpgkey= https://www.mongodb.org/static/pgp/server-3.4.asc

# you can modify gpgcheck=0 here to omit gpg verification

[root@localhost ~] # yum makecache

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two。 Install MongoDB

Installation commands:

Yum-y install mongodb-org

After installation is complete

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Installed:

Mongodb-org.x86_64 0RO 3.4.14-1.el7

Installed as a dependency:

Mongodb-org-mongos.x86_64 0VOR 3.4.14-1.el7 mongodb-org-server.x86_64 0RU 3.4.14-1.el7

Mongodb-org-shell.x86_64 0VOR 3.4.14-1.el7 mongodb-org-tools.x86_64 0RU 3.4.14-1.el7

Over!

[root@adminset yum.repos.d] #

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View the mongo installation location:

Whereis mongod

View the modified configuration file:

Vim / etc/mongod.conf

3. Start MongoDB

Start mongodb:

Systemctl start mongod.service

Stop mongodb:

Systemctl stop mongod.service

Check the status of mongodb:

Systemctl status mongod.service

4. To access the public network, you need to disable the firewall:

Turn off firewall:

Systemctl stop firewalld.service # stop firewall

Systemctl disable firewalld.service # prevents firewall from booting

5. Start Mongo shell

Command:

Mongo

View the database:

Show dbs

6. Set up mongodb remote access:

Edit the mongod.conf comment bindIp and restart mongodb. (this configuration represents that it can only be used locally, so it needs to be noted)

Vim / etc/mongod.conf

Restart mongodb to make the changes take effect:

Systemctl restart mongod.service

You can use mongodb normally at this point.

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