Maven: repository element was not specified in the POM inside distributionManagement? - maven

Question

I am trying to run the command, mvn release:perform, but I get this error:
Failed to execute goal
org.apache.maven.plugins:maven-deploy-plugin:2.5:deploy
(default-deploy) on project git-demo:
Deployment failed: repository element
was not specified in the POM inside
distributionManagement element or in
-DaltDeploymentRepository=id::layout::url
parameter
Here's my pom.xml file:
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.sonatype.blog</groupId>
<artifactId>git-demo</artifactId>
<packaging>jar</packaging>
<version>1.1-SNAPSHOT</version>
<name>git-demo</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
</dependencies>
<scm>
<connection>scm:git:git#github.com:Christian-Achilli-KP/git-demo.git</connection>
<url>scm:git:git#github.com:Christian-Achilli-KP/git-demo.git</url>
<developerConnection>scm:git:git#github.com:Christian-Achilli-KP/git-demo.git</developerConnection>
</scm>
<distributionManagement>
<!-- use the following if you're not using a snapshot version. -->
<repository>
<id>localSnap</id>
<name>RepositoryProxyRel</name>
<url>http://127.0.0.1:8080/nexus/content/repositories/releases/</url>
</repository>
<!-- use the following if you ARE using a snapshot version. -->
<snapshotRepository>
<id>MylocalSnap</id>
<name>RepositoryProxySnap</name>
<url>http://127.0.0.1:8080/nexus/content/repositories/snapshots/</url>
</snapshotRepository>
</distributionManagement>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-release-plugin</artifactId>
<version>2.1</version>
</plugin>
</plugins>
</build>
</project>
Actually I can see the
repository
declaration inside the
distributionManagent
tag.
Here's my settings.xml:
<settings>
<servers>
<server>
<id>localSnap</id>
<username>deployment</username>
<password>****</password>
</server>
<server>
<id>MylocalSnap</id>
<username>deployment</username>
<password>****</password>
</server>
<server>
<id>myserver</id>
<username>tomcat</username>
<password>tomcat</password>
</server>
</servers>
<mirrors>
<mirror>
<!--This sends everything else to /public -->
<id>nexus</id>
<mirrorOf>*</mirrorOf>
<url>http://127.0.0.1:8080/nexus/content/groups/public/</url>
</mirror>
</mirrors>
<profiles>
<profile>
<id>nexus</id>
<properties>
<project.build.sourceEncoding>MacRoman</project.build.sourceEncoding>
<project.reporting.outputEncoding>MacRoman</project.reporting.outputEncoding>
</properties>
<!--Enable snapshots for the built in central repo to direct -->
<!--all requests to nexus via the mirror -->
<repositories>
<repository>
<id>central</id>
<url>http://central</url>
<releases><enabled>true</enabled></releases>
<snapshots><enabled>true</enabled></snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>central</id>
<url>http://central</url>
<releases><enabled>true</enabled></releases>
<snapshots><enabled>true</enabled></snapshots>
</pluginRepository>
</pluginRepositories>
</profile>
</profiles>
<activeProfiles>
<activeProfile>nexus</activeProfile>
</activeProfiles>
</settings>
Any advice why it complains?

Answer 1

Review the pom.xml file inside of target/checkout/. Chances are, the pom.xml in your trunk or master branch does not have the distributionManagement tag.

Answer 2

I got the same message ("repository element was not specified in the POM inside distributionManagement element"). I checked /target/checkout/pom.xml and as per another answer and it really lacked <distributionManagement>.
It turned out that the problem was that <distributionManagement> was missing in pom.xml in my master branch (using git).
After cleaning up (mvn release:rollback, mvn clean, mvn release:clean, git tag -d v1.0.0) I run mvn release again and it worked.

Answer 3

You can also override the deployment repository on the command line:
-Darguments=-DaltDeploymentRepository=myreposid::default::http://my/url/releases

Answer 4

The ID of the two repos are both localSnap; that's probably not what you want and it might confuse Maven.
If that's not it: There might be more repository elements in your POM. Search the output of mvn help:effective-pom for repository to make sure the number and place of them is what you expect.

Answer 5

For me, this was something as simple as a missing version for my artifact - "1.1-SNAPSHOT"