Getting MongoCommandException: Command failed with error 18 (AuthenticationFailed): 'Authentication failed.' on server localhost:27017

Question

I want to establish a connection with my MongoDB database running in docker. Application seemingly starts without any problem but when I am trying to call any request like simple GET:

localhost:8082/devices

I am receiving two different errors depending on the configuration:

With properties:

spring.data.mongodb.authentication-database=admin
spring.data.mongodb.host=interviewTest
spring.data.mongodb.port=27017
spring.data.mongodb.username=mongoadmin
spring.data.mongodb.password=secret
server.port=8082
spring.data.mongodb.uri=mongodb://localhost:27017
spring.data.mongodb.database=interviewTest

I am receiving:

com.mongodb.MongoQueryException: Query failed with error code 13 and error message 'command find requires authentication' on server localhost:27017

and for application.properties with different configuration:

spring.data.mongodb.authentication-database=admin
spring.data.mongodb.port=27017
spring.data.mongodb.username=mongoadmin
spring.data.mongodb.password=secret
server.port=8082
spring.data.mongodb.database=interviewTest
spring.data.mongodb.uri=mongodb://mongoadmin:secret@localhost:27017/interviewTest?retryWrites=true&w=majority

com.mongodb.MongoCommandException: Command failed with error 18 (AuthenticationFailed): 'Authentication failed.' on server localhost:27017. The full response is { "ok" : 0.0, "errmsg" : "Authentication failed.", "code" : 18, "codeName" : "AuthenticationFailed" }

I created my MongoDB docker container like below:

docker run -p 27017-27019:27017-27019 
--name mongo 
-e MONGO_INITDB_ROOT_USERNAME=mongoadmin 
-e MONGO_INITDB_ROOT_PASSWORD=secret 
-e MONGO_INITDB_DATABASE=interviewTest 
-d mongo

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.1.7.RELEASE</version>
    <relativePath/> <!-- lookup parent from repository -->
  </parent>
  <groupId>com.interview</groupId>
  <artifactId>exercise</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <name>device</name>
  <description>Spring boot with MongoDB</description>

  <properties>
    <java.version>11</java.version>
    <hibernate.version>5.4.0.Final</hibernate.version>
    <mapstruct.processor.version>1.3.0.Final</mapstruct.processor.version>
    <mapstruct.version>1.3.0.Final</mapstruct.version>
    <spring.cloud.starter.netflix.hystrix.version>2.1.2.RELEASE</spring.cloud.starter.netflix.hystrix.version>
    <apache.common.lang.version>3.0</apache.common.lang.version>
  </properties>

  <dependencies>

    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
      <scope>test</scope>
      <exclusions>
        <exclusion>
          <groupId>junit</groupId>
          <artifactId>junit</artifactId>
        </exclusion>
        <exclusion>
          <groupId>org.hamcrest</groupId>
          <artifactId>hamcrest-core</artifactId>
        </exclusion>
        <exclusion>
          <groupId>org.hamcrest</groupId>
          <artifactId>hamcrest-library</artifactId>
        </exclusion>
      </exclusions>
    </dependency>

    <dependency>
      <groupId>org.hamcrest</groupId>
      <artifactId>hamcrest-library</artifactId>
      <version>2.1</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>org.hamcrest</groupId>
      <artifactId>hamcrest-core</artifactId>
      <version>2.1</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-data-mongodb</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

    <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
      <optional>true</optional>
    </dependency>

    <dependency>
      <groupId>org.hibernate.ogm</groupId>
      <artifactId>hibernate-ogm-mongodb</artifactId>
      <version>${hibernate.version}</version>
    </dependency>

    <dependency>
      <groupId>org.mapstruct</groupId>
      <artifactId>mapstruct-processor</artifactId>
      <version>${mapstruct.version}</version>
      <scope>provided</scope>
    </dependency>

    <dependency>
      <groupId>org.mapstruct</groupId>
      <artifactId>mapstruct</artifactId>
      <version>${mapstruct.version}</version>
    </dependency>

    <dependency>
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-lang3</artifactId>
      <version>${apache.common.lang.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
      <version>${spring.cloud.starter.netflix.hystrix.version}</version>
    </dependency>

    <dependency>
      <groupId>org.junit.jupiter</groupId>
      <artifactId>junit-jupiter-params</artifactId>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>org.junit.jupiter</groupId>
      <artifactId>junit-jupiter-api</artifactId>
      <version>5.3.2</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>org.junit.jupiter</groupId>
      <artifactId>junit-jupiter-engine</artifactId>
      <version>5.3.2</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>de.flapdoodle.embed</groupId>
      <artifactId>de.flapdoodle.embed.mongo</artifactId>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>org.mongodb</groupId>
      <artifactId>mongo-java-driver</artifactId>
      <version>3.11.0</version>
    </dependency>

  </dependencies>

  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.8.0</version>

        <dependencies>
          <dependency>
            <groupId>org.junit.platform</groupId>
            <artifactId>junit-platform-surefire-provider</artifactId>
            <version>1.1.0</version>
          </dependency>
          <dependency>
            <groupId>org.junit.jupiter</groupId>
            <artifactId>junit-jupiter-engine</artifactId>
            <version>5.1.0</version>
          </dependency>
        </dependencies>

        <configuration>
          <source>11</source>
          <target>11</target>
          <annotationProcessorPaths>
            <path>
              <groupId>org.mapstruct</groupId>
              <artifactId>mapstruct-processor</artifactId>
              <version>${mapstruct.processor.version}</version>
            </path>
            <path>
              <groupId>org.projectlombok</groupId>
              <artifactId>lombok</artifactId>
              <version>1.18.6</version>
            </path>
          </annotationProcessorPaths>
        </configuration>
      </plugin>

      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
      </plugin>
    </plugins>
    <finalName>spring-boot-device-docker</finalName>
  </build>

</project>

In the docker hub documentation I found something like:

MONGO_INITDB_ROOT_USERNAME, MONGO_INITDB_ROOT_PASSWORD
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 if I got it properly there is no problem with the role of my basic user mongoadmin.

I was trying to combine multiple configuration options but it did not yield desirable effect. I will be grateful for advice on how to solve that problem with MongoDB configuration and connection establish.

Answer 1

I found a solution with @Valijon support. Turns out that we cannot use ROOT_USERNAME to read out database. Our root user can be used to create new databases, collection, and new users. The solution is really easy. We should open our docker with the following command

docker exec -it mongo bash

and flag -it which mean that it will be an interactive terminal and after all, we will be able to talk with our container. After all, we are using mongo command like that to establish authentication with root admin credentials.

mongo -u mongoadmin

and in the next command line, we are passing password.

After all, we are using the command:

use interviewTest

to choose database in which one we will add a custom user.

Now we can type already prepared a script with a custom password, username, and roles:

db.createUser({user: "testUser", pwd: "pwd", roles : [{role: "readWrite", db: "interviewTest"}]});

Now everything works fine and we can use our database without authentication error.

Answer 2

if you are using admin as user, then you do not need to give password, below properties works fine for me :

spring.data.mongodb.host=localhost
spring.data.mongodb.port=27017
spring.data.mongodb.username=admin
spring.data.mongodb.database=mydb