With the correct setup user account on oss.sonatype servers, and a correctly configured gpg, we use the Maven release plugin to run the release.
It’s a two step process of mvn release:prepare, followed by mvn release:perform, while both need some extra arguments, like:
mvn release:prepare -Dgpg.useagent=true -Darguments=-Dgpg.passphrase=XYZ_SUPER -Pjboss-release,gpg-sign
mvn release:perform -Dgpg.useagent=true -Darguments=-Dgpg.passphrase=XYZ_SUPER -Pjboss-release,gpg-sign