DEV Community

Z. QIU
Z. QIU

Posted on

Install MongoDB with Docker (in Ubuntu 18.04)

#mongodb #docker #database #devops
Info: This post is one of the articles in context of this post: Huawei Cloud ECS server notes

Firstly, create the mapping repository for mongodb:

 mkdir ~/docker/mongo_8301 mkdir ~/docker/mongo_8301/db mkdir ~/docker/mongo_8301/config mkdir ~/docker/mongo_8301/log
Enter fullscreen mode Exit fullscreen mode

Then create the launch file for starting the docker container:

 touch ~/launchers/docker_mongo_8301.sh vi ~/launchers/docker_mongo_8301.sh
Enter fullscreen mode Exit fullscreen mode

Fill the following code into the launch file:

docker rm -f mongo_docker_8301 docker run -d -p 8301:27017 \ --name mongo_docker_8301 \ -v /home/jemaloQ/docker/mongo_8301/config:/data/configdb \ -v /home/jemaloQ/docker/mongo_8301/db:/data/db \ -v /home/jemaloQ/docker/mongo_8301/log:/data/log \ mongo --auth
Enter fullscreen mode Exit fullscreen mode

Now launch docker using cmd line: sh ~/launchers/docker_mongo_8301.sh. Wait till the end of image pull. Then check if mongo_docker_8301 is running correctly by executing docker ps -a | grep mongo.

Enter the inside of the container and execute mongo admin to login the default 'admin' database

 docker exec -it mongo_docker_8301 mongo admin
Enter fullscreen mode Exit fullscreen mode

Create an user of role administrator:

 > db.createUser({user:'admin',pwd:'JemaloAdmin', roles:[ { role:'userAdminAnyDatabase', db: 'admin'} ] }) > exit
Enter fullscreen mode Exit fullscreen mode

Later on, I can login 'admin' as user admin:

 docker exec -it mongo_docker_8301 mongo admin > db.auth('admin','JemaloAdmin')
Enter fullscreen mode Exit fullscreen mode

I can create other users by specifying their info and roles. Now I create user "jemaloQ" as "dbOwner" of database "knowledge":

 > db.createUser({user:'jemaloQ',pwd:'123456', roles:[ { role:'dbOwner', db: 'knowledge'} ] })
Enter fullscreen mode Exit fullscreen mode

Snapshot of my Putty console:
Alt Text

Now try to connect the newly launched MongoDB by Python:

from pymongo import MongoClient client = MongoClient("mongodb://jemaloQ:123456@111.22.123.117:8301") # print all the Databases names in Mongodb, returns empty list if no database has been created client.list_database_names() # connect to the 'knowledge' database, if it does not exist, this line shall create it and then connect to it db = client['knowledge'] # get the 'test' collection of the 'knowledge' database, if it does not exist, this line shall create it col = db.get_collection('test') # this item shall be uploaded to my database item_dic = {'uid': 123, 'name': 'jemaloQ'} # a query filter for checking whether an item with same id exists or not query_filter = {"uid": item_dic["uid"]} # now insert the item to 'test' collection of knowledge' database col.update( query_filter, {'$setOnInsert': item_dic}, upsert=True) # now, we can see the 'knowledge' database since it is no longer empty client.list_database_names() # => ['knowledge']
Enter fullscreen mode Exit fullscreen mode

Thus, I have now implemented my MongoDB service using docker on my server.

Top comments (3)

Collapse
 
wclayferguson profile image
Clay Ferguson •

You can also use "docker compose" like this:

github.com/Clay-Ferguson/quantizr/...

Collapse
 
zqiu profile image
Z. QIU • • Edited

Thanks a lot. It's so helpful! I will try to implement my docker services in this way.

Collapse
 
lico profile image
SeongKuk Han •

Thanks for sharing :DD

Some comments may only be visible to logged-in visitors. Sign in to view all comments.