Pxe booting server with a centos9 image started failing

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anand25021998
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Joined: 2022/06/21 06:40:28

Pxe booting server with a centos9 image started failing

Post by anand25021998 » 2022/06/22 13:12:03

Hello folks,

We have a fleet of servers on which we intend to run Centos9 stream. On the couple of them which we have been using to test centos9 stream, pxe booting centos9 using the vmlinuz+initrd at http://mirror.stream.centos.org/9-strea ... s/pxeboot/ started failing late last week. However even rolling back to a slightly older vmlinuz+initrd didn't fix things and pxe boot was failing the same way. The failure was in mounting at /sysroot soon after downloading stage2 of anaconda from upstream repo, something along the lines of "can not mount /dev/mapper/live-rw to /sysroot".

When we updated the repo URL in our kickstart script to point to https://linuxsoft.cern.ch/cern/centos/s ... x86_64/os/ which was a snapshot of upstream centos9 stream repo from June 8 (right now it has moved to June 15), the whole installation went through fine. This indicated that there was an issue possibly with the latest upstream repo and initrd+vmlinuz was fine.

We didn't expect an issue with the upstream repo at this point. Can issues like this still happen?
In the meantime we continue to use the Cern's snapshot but what's the best way to safeguard ourselves if we want to use the upstream repo?

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TrevorH
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Re: Pxe booting server with a centos9 image started failing

Post by TrevorH » 2022/06/22 15:32:02

CentOS Stream 9 is effectively a permanent beta so you can expect occasional breakage. It's why most of us wouldn't touch it with a bargepole.
The future appears to be RHEL or Debian. I think I'm going Debian.
Info for USB installs on http://wiki.centos.org/HowTos/InstallFromUSBkey
CentOS 5 and 6 are deadest, do not use them.
Use the FAQ Luke

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