Ok, I'm getting further, I think.
The upload seems to have succeeded:
[INFO] Uploaded to ossrh: https://oss.sonatype.org:443/service/local/staging/deployByRepositoryId/jakartaactivation-1020/com/sun/activation/jakarta.activation/1.2.1/jakarta.activation-1.2.1.pom.asc (833 B at 8.4 kB/s)
[INFO] * Upload of locally staged artifacts finished.
[INFO] Remote staged 2 repositories, finished with success.
Then it fails with this when I try to close the repository:
[ERROR]
[ERROR] Nexus Staging Rules Failure Report
[ERROR] ==================================
[ERROR]
[ERROR] Repository "jakartaactivation-1020" failures
[ERROR] Rule "signature-staging" failures
[ERROR] * No public key: Key with id: (d908a43fb7ec07ac) was not able to be located on <a href="" href="http://keys.gnupg.net:11371/%3Ehttp://keys.gnupg.net:11371/%3C/a%3E" target="_blank">http://keys.gnupg.net:11371/>http://keys.gnupg.net:11371/</a>. Upload your public key and try the operation again.
and lots more errors like that.
Is that because I don't have permission to publish to that groupId?
Or is it because of some other security/gpg problem?
Did it fail to sign my artifacts? I don't get any errors from
maven-gpg-plugin.