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hosters/hetzner-dedicated: mdadm: ignore homehost

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This is a safer way of ensuring there are no issues when auto-assembling
RAID arrays, since we skip the homehost validation altogether.
This commit is contained in:
Lorenzo Manacorda 2021-04-26 17:23:48 +02:00
parent 4e59dfe221
commit 76a4a6ff36
1 changed files with 3 additions and 5 deletions
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8
hosters/hetzner-dedicated/hetzner-dedicated-wipe-and-install-nixos.sh
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@ -229,13 +229,11 @@ cat > /mnt/etc/nixos/configuration.nix <<EOF
# This is mdadm's protection against accidentally putting a RAID disk
# into the wrong machine and corrupting data by accidental sync, see
# https://bugzilla.redhat.com/show_bug.cgi?id=606481#c14 and onward.
# We set the HOMEHOST manually go get the short '/dev/md' names,
# and so that things look and are configured the same on all such
# machines irrespective of host names.
# We do not worry about plugging disks into the wrong machine because
# we will never exchange disks between machines.
# we will never exchange disks between machines, so we tell mdadm to
# ignore the homehost entirely.
environment.etc."mdadm.conf".text = ''
HOMEHOST hetzner
HOMEHOST <ignore>
'';
# The RAIDs are assembled in stage1, so we need to make the config
# available there.