Deploying artifacts in nexus from maven gives error "Return code is: 401"?

Question

I am getting 401 error while deploying in nexus. I does not make any changes to the installed nexus. Nexus is running on localhost:8080/nexus and i am able to login with default user/password. When i am running mvn deploy i am getting this error.

Here is my POM.

 <groupId>testproject</groupId>
 <artifactId>testproject</artifactId>
 <packaging>jar</packaging>
 <version>1.0-SNAPSHOT</version>
 <name>testproject</name>
 <url>http://maven.apache.org</url>
 <distributionManagement>
  <repository>
      <id>releases</id>
      <url>http://localhost:8080/nexus/content/repositories/releases</url>
    </repository>
    <snapshotRepository>
       <id>snapshots</id>
       <url>http://localhost:8080/nexus/content/repositories/snapshots</url>
    </snapshotRepository>
</distributionManagement>
<dependencies>
 .........
</dependencies>

and ~/.m2/settings.xml

<servers>
    <server>
        <id>snapshots</id>
        <username>deployment</username>
        <password>deployment123</password>
    </server>
    <server>
        <id>releases</id>
        <username>deployment</username>
        <password>deployment123</password>
    </server>
</servers>

Exception:

Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.7:deploy (default-           deploy) on project testproject: Failed to deploy artifacts: Could not transfer artifact testproject:testproject:jar:1.0-20131213.150615-1 from/to snapshots (http://localhost:8080/nexus/content/repositories/snapshots): Failed to transfer file: http://localhost:8080/nexus/content/repositories/snapshots/testproject/testproject/1.0-SNAPSHOT/testproject-1.0-20131213.150615-1.jar. 
Return code is: 401 -> [Help 1]

Please help me.

Answer 1

It's working now. Need to edit ${MVN_HOME}/conf/settings.xml instead of /home/{user}/.m2/settings.xml

Answer 2

HTTP 401 is the status code for "unauthorized", which implies that your deployment user isn't authorized to upload artifacts to that particular repository in Nexus. Log in to Nexus and give the deployment user the role(s) required to to change that snapshot repo.