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Purpose of the document

Install the Mongodb application in the Linux system and set basic security permissions to ensure the security of the database

Basic knowledge

MongoDB is a database based on distributed file storage. Written in C++ language. Designed to provide scalable high-performance data storage solutions for WEB applications.

MongoDB is a product between relational database and non-relational database, which is the most functional and most like relational database in non-relational database. The data structure he supports is very loose, which is similar to json's bson format, so it can store more complex data types. The most important feature of Mongo is that the query language it supports is very powerful, and its syntax is somewhat similar to the object-oriented query language. It can almost achieve most of the functions similar to the single table query of relational database, and also supports the establishment of data indexing.

Common command

Command

Usage

Start mongo with a configuration file

Mongod-config / etc/mongod.conf-port 27017-dbpath / data/db1

Restart mongo

Service mongod restart

Add mongo to boot boot

Chkconfig mongod on

Create a database

Use database_name

View the database

Show dbs

Insert data

Db.database_name.insert ({"name": "name"})

Delete database

Db.dropDatabase ()

Delete a collection

Db.collection.drop ()

Insert document

Db.COLLECTION_NAME.insert (document)

View inserted document

Db.col.find ()

Update document

Db.collection.update ()

Db.collection.save ()

Delete document

Db.collection.remove ()

Mongodb monitoring

Mongostat

Mongotop

Required software

MongoDB server version: 3.4.1

System environment

Operating system: centos 7 (3.10.0-327.36.3.el7.x86_64)

Operation step 1. Configure yum Warehouse

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

[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

two。 Install the mongodb application

Sudo yum install-y mongodb-org

3. Open mongo with no access control

Mongod-port 27017-dbpath / data/db1 &

Note: if there is no / data/db1 folder, create a new mkdir-p / data/db1

4. Set the administrator account password

Log in to mongo

Mongo-port 27017

Create an administrator user

Use admin

Db.createUser (

{

User: "myUserAdmin"

Pwd: "abc123"

Roles: [{role: "userAdminAnyDatabase", db: "admin"}]

}

)

5. Configure mongo profile to enable mandatory access control

Vim / etc/mongod.conf

Modify security options

Security:

Authorization: enabled

6. Apply configuration file to open mongo

Mongod-config / etc/mongod.conf-port 27017-dbpath / data/db1

Note: you can also use the following command to force access control to enable mongo.

Mongod-auth-port 27017-dbpath / data/db1

Note: if SELinux is enabled, you need to configure the following statement

Semanage port-a-t mongod_port_t-p tcp 27017

7. Create a general user account

Mongo

Use test

Db.createUser (

{

User: "myTester"

Pwd: "xyz123"

Roles: [{role: "readWrite", db: "test"}

{role: "read", db: "reporting"}]

}

)

Thank you for reading! This is the end of the article on "how to deploy and install mongodb in linux". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, you can share it out for more people to see!

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