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While it may look surprisingly that you have to add the same credentials three times, DSpace < 6 will be looking for these server IDs and the upload to sonatype will fail as unauthorized if they are missing.

Java Version

For DSpace 4.x or 5.x, you should be using Java 7. See

For DSpace 6, you can use either Java 7 or Java 8 for the release.

Use Maven 3 or above

Make sure you're using a recent version of Maven. As of this writing, Maven 3.0.5 is known to work.

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1. Login to http://oss.sonatype.org/
2. Click "Staging Repositories" in the left column, then select the checkbox next to the staged repository on the right. The contents of it will open up at the bottom of the page.
   With the staged repository still selected,
   1. The staged repository should begin in the "Closed" state, which means some automated verifications on the POM structure etc. have already been run. If it is not yet closed, select it and click the "Close" button
   at the top
   1. .

   1. Ensure that the artifacts in staging are exactly as they should be once deployed to Maven Central.  Here's a few things to watch out for...

      1. Download one (or more) of the POMs, and make sure the <version> tag is correct (e.g. 6.0 and not a SNAPSHOT version or similar)

      2. Compare it against a past release in Maven Central (http://repo2.maven.org/maven2/org/dspace/), making sure it has the same JARs or WARs, etc

      3. Check if the file sizes looks reasonable (0 Bytes is probably not reasonable ;-)). You can also compare those to previous releases.

      4. You can also verify the checksums of one or more of the JARs/WARs in Sonatype versus those that were installed into your .m2 directory. They should be the same.

         Info
         title If You Need to Revert Back before Releasing
         If anything is incorrect, select the staged repository and select "Drop". After the problem is resolved, you can re-deploy the artifacts to staging and verify them again. To re-deploy an already-tagged release: mvn release:perform -Dmirage2.on=true -Dtag=dspace-x.y -DconnectionUrl=scm:git:git@github.com:DSpace/DSpace.git -Darguments="-Dgpg.keyname=YourKeyId -Dgpg.passphrase=YourKeyPassword"

   2. If everything looks good, select the repository and select "Release". The artifacts should be synced to Maven central (http://repo2.maven.org/maven2/org/dspace/) within 2 hours.

      Warning
      title Once Released, There is No "Undo" Option
      Once you select "Release", there is no way to "undo" the release. If any major issues are found, you'll have to increment the version number and perform a new bug-fix release.

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