mongo db docker image authentication failed - mongodb

Question

I'm using https://hub.docker.com/_/mongo mongo image in my local docker environment, but I'm getting Authentication failed error. In docker-compose I add it like:
my-mongo:
image: mongo
restart: always
container_name: my-mongo
environment:
MONGO_INITDB_ROOT_USERNAME: mongo
MONGO_INITDB_ROOT_PASSWORD: asdfasdf
networks:
- mynet
I also tried to run mongo CLI from inside the container but still getting the same error:
root#76e6db78228b:/# mongo
MongoDB shell version v4.2.3
connecting to: mongodb://127.0.0.1:27017/?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("c87c0f0e-fe83-41a6-96e9-4aa4ede8fa25") }
MongoDB server version: 4.2.3
Welcome to the MongoDB shell.
For interactive help, type "help".
For more comprehensive documentation, see
http://docs.mongodb.org/
Questions? Try the support group
http://groups.google.com/group/mongodb-user
> use translations
switched to db translations
> db.auth("mongo", "asdfasdf")
Error: Authentication failed.
0
Also, I'm trying to create a separate user:
> use admin
switched to db admin
db.auth("mongo", "asdfasdf")
1
> db.createUser({
user: "user",
pwd: "asdfasdf",
roles: [ {role: "readWrite", db: "translations" } ]
})
Successfully added user: {
"user" : "user",
"roles" : [
{
"role" : "readWrite",
"db" : "translations"
}
]
}
> use translations
switched to db translations
> db.auth("user", "asdfasdf")
Error: Authentication failed.
0
and the same, what I'm doing wrong???
Updated:
root#8bf81ef1fc4f:/# mongo -u mongo -p asdfasdf --authenticationDatabase admin
MongoDB shell version v4.2.3
connecting to: mongodb://127.0.0.1:27017/?authSource=admin&compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("02231489-eaf4-40be-a108-248cec88257e") }
MongoDB server version: 4.2.3
Server has startup warnings:
2020-02-26T16:24:12.942+0000 I STORAGE [initandlisten]
2020-02-26T16:24:12.943+0000 I STORAGE [initandlisten] ** WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine
2020-02-26T16:24:12.943+0000 I STORAGE [initandlisten] ** See http://dochub.mongodb.org/core/prodnotes-filesystem
---
Enable MongoDB's free cloud-based monitoring service, which will then receive and display
metrics about your deployment (disk utilization, CPU, operation statistics, etc).
The monitoring data will be available on a MongoDB website with a unique URL accessible to you
and anyone you share the URL with. MongoDB may use this information to make product
improvements and to suggest MongoDB products and deployment options to you.
To enable free monitoring, run the following command: db.enableFreeMonitoring()
To permanently disable this reminder, run the following command: db.disableFreeMonitoring()
---
> db.createUser({user: "someuser", pwd: "asdfasdf", roles: [{role: "readWrite", db: "translations"}]})
Successfully added user: {
"user" : "someuser",
"roles" : [
{
"role" : "readWrite",
"db" : "translations"
}
]
}
> use translations
switched to db translations
> db.auth("someuser", "asdfasdf")
Error: Authentication failed.
0
>

Answer 1

After some time, I figured out.
On the same folder, create docker-compose.yml and init-mongo.js
docker-compose.yml
version: '3.7'
services:
database:
image: mongo
container_name : your-cont-name
command: mongod --auth
environment:
- MONGO_INITDB_DATABASE=my_db
- MONGO_INITDB_ROOT_USERNAME=admin
- MONGO_INITDB_ROOT_PASSWORD=root
ports:
- '27017-27019:27017-27019'
volumes:
- mongodbdata:/data/db
- ./init-mongo.js:/docker-entrypoint-initdb.d/mongo-init.js:ro
volumes:
mongodbdata:
driver: local
init-mongo.js
db.createUser(
{
user: "your_user",
pwd: "your_password",
roles: [
{
role: "readWrite",
db: "my_db"
}
]
}
);
db.createCollection("test"); //MongoDB creates the database when you first store data in that database
Auth
First, execute the bash inside the container
docker exec -it your-cont-name bash
Now we can login.
For the admin
mongo -u admin -p root
For the your_user you have to specify the db (with the --authenticationDatabase) otherwise you'll have an auth error
mongo -u your_user -p your_password --authenticationDatabase my_db
After that, you should switch to the right db with
use my_db
If you don't execute this command, you'll be on test db
Note
For being sure of having the right config, i prefer to
docker-compose stop
docker-compose rm
docker volume rm <your-volume>
docker-compose up --build -d

Answer 2

as stated in the Docs
These variables, used in conjunction, create a new user and set that
user's password. This user is created in the admin authentication
database and given the role of root, which is a "superuser" role.
so you need to add --authenticationDatabase admin to your command since the mongod will be started with mongod --auth
example:
mongo -u mongo -p asdfasdf --authenticationDatabase admin

Answer 3

i have the same issue, after google two hours finally sovled;
solution：find out the host machine direcory mounted into mongodb container, delete it,then re-create the mongodb container.
mongo db container create by docker-compose.yaml mount a diretory from host mechine to the container for save the mongo datbases. when you remove the container the mouted direcotry do not deleted, so the default username and password pass by env var could be long time ago you set, now you change the user name and password. just do not work,cause recreate the container will not recreate the "admin" database .

Answer 4

I've fallen in this trap and wasted a day while everything was correct.
I'm writing this for future me(s) because it wasn't mentioned anywhere else and also to avoid my mistake while setting up user/pass combination to connect to their database from other services.
Assuming everything is right:👇
If you are mounting some local folder of yours as storage for your database like below:
services:
your_mongo_db:
// ...some config
volumes:
- ./__TEST_DB_DATA__:/data/db
- ./init-mongo.js:/docker-entrypoint-initdb.d/mongo-init.js:ro
environment:
- "MONGO_INITDB_ROOT_USERNAME=root"
- "MONGO_INITDB_ROOT_PASSWORD=pass"
//...more config
Please remember to remove this folder before re-running your compose file. I think when you run the docker-compose command for the first time, Mongo will create and store the user data there (like any other collections) and then reuse it for the next time (since you mounted that volume).

Answer 5

I had the same problem myself,
Please first remove the username and password from credentials.
environment:
MONGO_INITDB_ROOT_USERNAME: mongo
MONGO_INITDB_ROOT_PASSWORD: asdfasdf
after you remove the credentials you may check dbs or users on your mongodb.
show dbs
show users
Those commands also needs auth, so if you can see them, can be null, then you fix your issue.
Than,
then create a admin user,
use admin
db.createUser({user: "root", pwd: "root", roles:["root"]})
then you can logout and try to connect with credentials to the shell as an admin.
In addition if you are still having some issues about creating new user,
In my case I changed mechanisms to SCRAM-SHA-1 than it worked like a charm.
{
user: "<name>",
pwd: passwordPrompt(), // Or "<cleartext password>"
customData: { <any information> },
roles: [
{ role: "<role>", db: "<database>" } | "<role>",
...
],
authenticationRestrictions: [
{
clientSource: ["<IP>" | "<CIDR range>", ...],
serverAddress: ["<IP>" | "<CIDR range>", ...]
},
...
],
mechanisms: [ "<SCRAM-SHA-1|SCRAM-SHA-256>", ... ],
passwordDigestor: "<server|client>"
}

Answer 6

I had the same problem myself, follows this steps:
Steps 1 and 2 are to delete de old configuration, and set and apply the new configuration, its so important:
Delete to the containers mongo:
docker rm mongo -f
If you have created volumes, delete them:
docker volume rm $(docker volume ls -q) -f
In ports field of docker-compose.yml set:
- 27018:27017 ->
Its so important that ports is not 27017:27017, in my case it was generating conflict.
Up docker compose:
docker-compose up
Try now the connection with authentication!
Example of docker-compose.yml:
mongo:
container_name: mongo
image: mongo:4.4
restart: always
environment:
TZ: "Europe/Madrid"
MONGO_INITDB_ROOT_USERNAME: "user"
MONGO_INITDB_ROOT_PASSWORD: "admin1"
volumes:
- ./mongoDataBase:/data/db
ports:
- 27018:27017
Best regards!