Comment 36 for bug 1790213

It has been found out that the issue was some bad permission in the RPMs from the mirror.

These RPMs are stored into the ISO and then put it into /www/pages/feed/<release>/Packages/ to be used by anaconda in the provision of an additional controller or compute. As the http server that runs there runs as non-root, the files couldn't be served, thus causing a failure in the installation of the packages. See[0] and [1]

After changing the permissions to 644, now the system is able to boot. A proposed next step is to ensure that the files under /www/pages/feed/<release>/Packages has the correct permission to be read by the web server, this could be done through a kickstart script.

However, as this has been root caused I recommend to lower the importance (maybe Medium) as this is not a blocking issue anymore.

[0] http://lists.starlingx.io/pipermail/starlingx-discuss/2018-September/001057.html
[1] http://lists.starlingx.io/pipermail/starlingx-discuss/2018-September/001056.html