How to Install MongoDB 5 in CentOS 8
MongoDB is a NoSQL database that stores data as JSON-like documents. Documents store related information together and use the MongoDB query language (MQL) for access and it is also called GriddFS which performs load balancing and data replication features over multiple machines for storing files.
Add MongoDB Repository
MongoDB is not present in the CentOS 8 default repository, we need to add it manually.
First, create the below file.
vi /etc/yum.repos.d/mongodb.repo
Paste the below configuration to a created file and save the file.
[mongodb-org-5.0]
name=MongoDB Repository
baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/5.0/x86_64/
gpgcheck=1
enabled=1
gpgkey=https://www.mongodb.org/static/pgp/server-5.0.asc
Install MongoDB in CentOS 8
yum install mongodb-org
Next, start and enable MongoDB to start on boot.
systemctl start mongod
systemctl enable mongod
To verify the status of MongoDB
systemctl status mongod
Output:
[root@vps ~]# systemctl status mongod
● mongod.service - MongoDB Database Server
Loaded: loaded (/usr/lib/systemd/system/mongod.service; ena>
Active: active (running) since Mon 2021-10-25 10:33:57 EDT;>
Docs: https://docs.mongodb.org/manual
Main PID: 59662 (mongod)
Memory: 150.5M
CGroup: /system.slice/mongod.service
└─59662 /usr/bin/mongod -f /etc/mongod.conf
Access MongoDB Shell
You can now access MongoDB’s shell by using the following command
mongo
Output:
[root@vps ~]# mongo
MongoDB shell version v5.0.3
connecting to: mongodb://127.0.0.1:27017/?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("9df5b6b1-7306-444e-97c4-0c5e249b7125") }
MongoDB server version: 5.0.3
================
Warning: the "mongo" shell has been superseded by "mongosh",
which delivers improved usability and compatibility.The "mongo" shell has been deprecated and will be removed in
an upcoming release.
We recommend you begin using "mongosh".
For installation instructions, see
Creating MongoDB and Admin User
mongo
Next, switch to the database admin by running.
use admin
Now create a new MongoDB user by running the code below.
db.createUser(
{
user: "mongod_admin",
pwd: "YOUR-PASSWORD",
roles: [ { role: "userAdminAnyDatabase", db: "admin" } ]
}
)
Note: Replace
YOUR-PASSWORD
with the actual password
Output:
Successfully added user: {
"user" : "mongod_admin",
"roles" : [
{
"role" : "userAdminAnyDatabase",
"db" : "admin"
}
]
}
>
To list MongoDB users created, run.
show users
Output:
> show users
{
"_id" : "admin.mongod_admin",
"userId" : UUID("b7b62506-630d-463b-8ae1-b65f72063b17"),
"user" : "mongod_admin",
"db" : "admin",
"roles" : [
{
"role" : "userAdminAnyDatabase",
"db" : "admin"
}
],
"mechanisms" : [
"SCRAM-SHA-1",
"SCRAM-SHA-256"
]
}
>
Configuring Authentication for MongoDB
To enable authentication edit the /lib/systemd/system/mongod.service file, under the [Service] section, locate and edit the Environment parameter as shown.
vi /lib/systemd/system/mongod.service
Environment="OPTIONS= --auth -f /etc/mongod.conf"
After changing the file looks like.
[Service]
User=mongod
Group=mongod
Environment="OPTIONS= --auth -f /etc/mongod.conf"
EnvironmentFile=-/etc/sysconfig/mongod
ExecStart=/usr/bin/mongod $OPTIONS
ExecStartPre=/usr/bin/mkdir -p /var/run/mongodb
For the changes to come into effect, reload the system and restart MongoDB.
systemctl daemon-reload
systemctl restart mongod
If you now try listing the users without authentication, you should get an error as shown.
MongoDB shell version v5.0.3
connecting to: mongodb://127.0.0.1:27017/?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("5d5e87fc-f40d-4e42-bc0e-96bd60ee66a1") }
MongoDB server version: 5.0.3
================
Warning: the "mongo" shell has been superseded by "mongosh",
which delivers improved usability and compatibility.The "mongo" shell has been deprecated and will be removed in
an upcoming release.
We recommend you begin using "mongosh".
For installation instructions, see
https://docs.mongodb.com/mongodb-shell/install/
================
>
To authenticate, simply pass the credentials as shown.
db.auth('mongod_admin', 'YOUR-PASSWORD')
Note: Replace
YOUR-PASSWORD
with the actual password
Now you can run any command after that. Let’s try listing the users once more:
show users
Output:
{
"_id" : "admin.mongod_admin",
"userId" : UUID("b7b62506-630d-463b-8ae1-b65f72063b17"),
"user" : "mongod_admin",
"db" : "admin",
"roles" : [
{
"role" : "userAdminAnyDatabase",
"db" : "admin"
}
],
"mechanisms" : [
"SCRAM-SHA-1",
"SCRAM-SHA-256"
]
}
To exit the database engine run.
exit
CrownCloud - Get a SSD powered KVM VPS at $4.5/month!
Use the code WELCOME
for 10% off!
1 GB RAM / 25 GB SSD / 1 CPU Core / 1 TB Bandwidth per month
Available Locations: LAX | MIA | ATL | FRA | AMS