I’m setting up a CircleCI pipeline for deploying a multi-module Maven project. The project structure includes a parent project (packaged as JAR) and several service modules, all of which refer to the parent project. I have successfully set up a private Nexus repository and deployed the parent project to Nexus. Everything works fine locally, and I can download dependencies from Nexus during local builds.

However, when building the project on CircleCI using Maven 3.9.3, I’m encountering a 401 Unauthorized error when trying to access the private Nexus repository. I understand that starting from Maven 3.8.1, HTTP traffic is restricted, so I added the necessary mirror configuration in the settings.xml file to allow HTTP traffic.

Even I’m using correct credentials in the settings.xml, the build fails with the following error:

Could not resolve dependencies for project org.organization.ecommerce:shop_service:jar:1.0.0: Failed to collect dependencies at com.organization.ecommerce:parent:jar:1.0.0: Failed to read artifact descriptor for com.organization.ecommerce:parent:jar:1.0.0: The following artifacts could not be resolved: com.organization.ecommerce:parent:pom:1.0.0 (absent): Could not transfer artifact com.organization.ecommerce:parent:pom:1.0.0 from/to allow-organization-release (http://IP_ADDRESS/repository/organization-release/): status code: 401, reason phrase: Unauthorized

Nexus Repository

Settings.xml file

<settings xmlns="http://maven.apache.org/SETTINGS/1.2.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.2.0 https://maven.apache.org/xsd/settings-1.2.0.xsd">
<pluginGroups>
</pluginGroups>

<proxies>
</proxies>

<servers>
    <server>
        <id>organization-release</id>
        <username>NEXUS_USERNAME</username>
        <password>NEXUS_PASSWORD</password>
    </server>

    <server>
        <id>organization-snapshot</id>
        <username>NEXUS_USERNAME</username>
        <password>NEXUS_PASSWORD</password>
    </server>
</servers>

<mirrors>
     <mirror>
        <id>central</id>
        <mirrorOf>central</mirrorOf>
        <url>https://repo.maven.apache.org/maven2</url>
    </mirror>
    <mirror>
        <id>allow-organization-release</id>
        <mirrorOf>*</mirrorOf>
        <url>http://IP_ADDRESS:8081/repository/organization-release/</url>
        <blocked>false</blocked>
    </mirror>
    <mirror>
        <id>allow-organization-snapshot</id>
        <mirrorOf>*</mirrorOf>
        <url>http://IP_ADDRESS:8081/repository/organization-snapshot/</url>
        <blocked>false</blocked>
    </mirror>
</mirrors>

<profiles>
    <profile>
        <id>nexus-profile</id>
        <repositories>
            <repository>
                <id>maven-central</id>
                <url>https://repo.maven.apache.org/maven2/</url>
                <releases>
                    <enabled>true</enabled>
                </releases>
                <snapshots>
                    <enabled>true</enabled>
                </snapshots>
            </repository>
            <repository>
                <id>organization-release</id>
                <url>http://IP_ADDRESS:8081/repository/organization-release/</url>
                <releases>
                    <enabled>true</enabled>
                </releases>
                <snapshots>
                    <enabled>false</enabled>
                </snapshots>
            </repository>
            <repository>
                <id>organization-snapshot</id>
                <url>http://IP_ADDRESS:8081/repository/organization-snapshot/</url>
                <releases>
                    <enabled>false</enabled>
                </releases>
                <snapshots>
                    <enabled>true</enabled>
                </snapshots>
            </repository>
        </repositories>
    </profile>
</profiles>

<activeProfiles>
    <activeProfile>nexus-profile</activeProfile>
</activeProfiles>

Common libraries 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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.organization.ecommerce</groupId>
    <artifactId>common-libraries</artifactId>
    <version>1.0.0</version>

    <packaging>jar</packaging>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.2.4</version>
    </parent>

    <dependencies>
        <!-- spring dependencies -->
    </dependencies>

    <properties>
        <maven.compiler.source>17</maven.compiler.source>
        <maven.compiler.target>17</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <distributionManagement>
        <snapshotRepository>
            <id>organization-snapshot</id>
            <name>organization snapshot</name>
            <url>http://IP_ADDRESS:8081/repository/organization-snapshot/</url>
        </snapshotRepository>
        <repository>
            <id>organization-release</id>
            <name>organization release</name>
            <url>http://IP_ADDRESS:8081/repository/organization-release/</url>
        </repository>
    </distributionManagement>

</project>

Parent 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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.organization.ecommerce</groupId>
    <artifactId>parent</artifactId>
    <version>1.0.0</version>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>com.amazonaws</groupId>
                <artifactId>aws-java-sdk-bom</artifactId>
                <version>1.11.1000</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>
        <dependency>
            <groupId>com.organization.ecommerce</groupId>
            <artifactId>common-libraries</artifactId>
            <version>1.0.0</version>
        </dependency>
        <dependency>
            <groupId>com.amazonaws</groupId>
            <artifactId>aws-java-sdk-secretsmanager</artifactId>
        </dependency>
    </dependencies>

    <properties>
        <maven.compiler.source>17</maven.compiler.source>
        <maven.compiler.target>17</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <distributionManagement>
        <snapshotRepository>
            <id>organization-snapshot</id>
            <name>organization snapshot</name>
            <url>http://IP_ADDRESS:8081/repository/organization-snapshot/</url>
        </snapshotRepository>
        <repository>
            <id>organization-release</id>
            <name>organization release</name>
            <url>http://IP_ADDRESS:8081/repository/organization-release/</url>
        </repository>
    </distributionManagement>

</project>

Child project 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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.organization.ecommerce</groupId>
    <artifactId>service</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>pom</packaging>

    <modules>
        <module>shop-service</module>
        <module>product-service</module>
        <module>user-service</module>
    </modules>

    <dependencies>
        <dependency>
            <groupId>com.organization.ecommerce</groupId>
            <artifactId>parent</artifactId>
            <version>1.0.0</version> <!-- This artifact is not found in private nexus repository -->
        </dependency>
    </dependencies>

</project>