mirror of
https://github.com/xcat2/xcat-core.git
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Daniel Hilst
3a5cbef630
The Ubuntu netboot image inherited the build host's /etc/hostname --
genimage's chroot shares the build host's UTS namespace, so /etc/hostname
ended up as the MN's name and every diskless node booted as that name
instead of its own ("hostname poisoning"). xCAT keys on IP/MAC so
provisioning still succeeds, but the node's local identity (hostname,
prompt, syslog) is wrong and N nodes share one name. The image also
shipped no netplan, so systemd-networkd-wait-online failed. In
compute.postinstall, clear /etc/hostname so each node takes its name at
boot from DHCP (udhcpc option host-name) / xCAT, and drop in a DHCP
netplan (optional, dhcp-identifier mac) so systemd-networkd configures the
boot NIC. Ubuntu-only.
Signed-off-by: Daniel Hilst <392820+dhilst@users.noreply.github.com>
78 lines
3.1 KiB
Bash
Executable File
78 lines
3.1 KiB
Bash
Executable File
#!/bin/sh
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#-- Do not remove following line if you want to make use of CVS version tracking
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#-- $Id: compute.postinstall,v 1.21 2008/09/04 12:05:45 sikorsky Exp $
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#-- jurij.sikorsky@t-systems.cz
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#--
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#-- this script is run after all packages from $profile.pkglist are installed
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#--
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#-- it gets these arguments:
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#--
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#-- $1 = install root (chroot directory for profile)
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#-- $2 = OS version
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#-- $3 = architecture
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#-- $4 = profile name
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#-- $5 = work dir (where genimage is located)
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#--
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#--
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installroot=$1
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osver=$2
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arch=$3
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profile=$4
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workdir=$5
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#-- Example how /etc/fstab can be automatically generated during image generation:
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cat <<END >$installroot/etc/fstab
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devpts /dev/pts devpts gid=5,mode=620 0 0
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tmpfs /dev/shm tmpfs defaults 0 0
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proc /proc proc defaults 0 0
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sysfs /sys sysfs defaults 0 0
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tmpfs /tmp tmpfs defaults 0 2
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tmpfs /var/tmp tmpfs defaults 0 2
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${profile}_${arch} / tmpfs rw 0 1
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END
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#-- Uncomment the line contains "cons" in /etc/inittab
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#-- Example of booted image versioning
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#-- We want to know, with what configuration (version of the image) each node was booted.
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#-- Hence, we keep image definition files and postscripts in CVS. During image generation we create file /etc/IMGVERSION and fill it with CVS "$Id$" of files with image definition (.pkglist, .exlist, .repolist, .postinstall). Then, during boot, each "CVS enabled" postscript (see /install/postscripts/cvs_template.sh and /install/postscripts/cvs_template.pl) adds one line to /etc/IMGVERSION. Then you can determine in any time what image you are running and what postscipts in which versions were run.
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#cat /dev/null > $installroot/etc/IMGVERSION
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#for ext in pkglist exlist postinstall repolist; do
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# [ -r $workdir/$profile.$ext ] && cat $workdir/$profile.$ext | grep -E '^[[:space:]]*#.*[[:space:]]\$Id' >> $installroot/etc/IMGVERSION
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#done
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#Setup locale for Ubuntu diskless nodes
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echo "Setting up the locales";
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chroot $installroot \
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locale-gen en_US.UTF-8 en_US
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chroot $installroot \
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update-locale
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DEBIAN_FRONTEND=noninteractive chroot $installroot \
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dpkg-reconfigure locales
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#-- A shared diskless image must not carry the builder's identity. genimage's chroot shares
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#-- the build host's UTS namespace, so /etc/hostname ends up as the MN's name and every node
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#-- booting this image inherits it ("hostname poisoning"). Clear it so each node takes its name
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#-- at boot from DHCP (udhcpc option host-name) / xCAT instead of the build host.
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: > $installroot/etc/hostname
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#-- Ship a DHCP netplan so systemd-networkd configures the boot NIC. Without any netplan in the
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#-- image, systemd-networkd-wait-online has nothing to bring up and the unit fails. optional:true
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#-- keeps it from blocking boot; dhcp-identifier:mac matches xCAT's MAC-based DHCP.
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mkdir -p $installroot/etc/netplan
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cat <<'NETPLAN' > $installroot/etc/netplan/90-xcat-dhcp.yaml
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network:
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version: 2
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renderer: networkd
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ethernets:
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xcat-cluster:
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match:
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name: "e*"
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dhcp4: true
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dhcp-identifier: mac
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optional: true
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NETPLAN
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chmod 600 $installroot/etc/netplan/90-xcat-dhcp.yaml
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