Deploy Artefact at nexus Server - error dependencies could not be resolved - maven

Question

I have setup a nexus server and afterwards I had the opinion to simple deploy an artefact to this nexus server. Therefore I created a simple Java project with this pom:
<project xmlns="...">
<modelVersion>4.0.0</modelVersion>
<groupId>MyProject</groupId>
<artifactId>MyProject</artifactId>
<version>0.0.1-SNAPSHOT</version>
<build>
<sourceDirectory>src</sourceDirectory>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
My settings file looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<settings ...>
<pluginGroups>
</pluginGroups>
<proxies>
</proxies>
<servers>
</servers>
<mirrors>
<mirror>
<id>nexus</id>
<name>Nexus Public Mirror</name>
<mirrorOf>central</mirrorOf>
<url>http://it-nexus.domain:8081/nexus/content/groups/public</url>
</mirror>
</mirrors>
<profiles>
<profile>
<id>nexus</id>
<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>
Then I have tried to deploy my artefact with:
mvn deploy
and I got this Error:
[ERROR] Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of its dependencies could not be resolved: Failure to find org.apache.maven.plugins:maven-resources-plugin
:jar:2.6 in http://it-nexus.domain:8081/nexus/content/groups/public was cached in the local repository, resolution will not be reattempted until the update interval of
nexus has elapsed or updates are forced -> [Help 1]
Actually I don't know what I am doing wrong!?

Answer 1

You've got a few things wrong (well, everything really).
First, you can remove profiles and everything under it, along with activeProfiles, from your server.xml file. Next, you need to add a servers entry, containing a server with the id, 'nexus' (assuming you're uploading to the same nexus instance you're using to mirror central), along with a username and password of some sort.
Then you have to have a distributionManagement section in your pom, referencing the same server you've specified in the settings.xml file, and configure the maven-deploy plugin. Documentation for that can be found here. You will also need an scm section.
The actual error you talk about is probably because your nexus server isn't actually configured to proxy/mirror central. Oh, and you should use * as the argument to mirrorOf.