builder: Add script for making Red Hat Enterprise Linux instances.

This uses some internal Red Hat repositories so it's not generally
useful, but could be easily adapted by users.

builder/website/rhel.sh

@@ -0,0 +1,132 @@
+#!/bin/bash -
+# virt-builder
+# Copyright (C) 2013 Red Hat Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+unset CDPATH
+export LANG=C
+set -e
+set -x
+
+if [ $# -ne 1 ]; then
+    echo "$0 VERSION"
+    exit 1
+fi
+
+version=$1
+output=rhel-$version
+tmpname=tmp-$(tr -cd 'a-f0-9' < /dev/urandom | head -c 8)
+
+case $version in
+    6.*)
+        major=6
+        baseurl=http://download.devel.redhat.com/released/RHEL-$major/$version
+        tree=$baseurl/Server/x86_64/os
+        ;;
+    *)
+        echo "$0: version $version not supported by this script yet"
+        exit 1
+esac
+
+rm -f $output $output.old $output.xz
+
+# Generate the kickstart to a temporary file.
+ks=$(mktemp)
+cat > $ks <<'EOF'
+install
+text
+reboot
+lang en_US.UTF-8
+keyboard us
+network --bootproto dhcp
+rootpw builder
+firewall --enabled --ssh
+selinux --enforcing
+timezone --utc America/New_York
+bootloader --location=mbr --append="console=tty0 console=ttyS0,115200 rd_NO_PLYMOUTH"
+zerombr
+clearpart --all --initlabel
+part /boot --fstype=ext4 --size=512         --asprimary
+part swap                --size=1024        --asprimary
+part /     --fstype=ext4 --size=1024 --grow --asprimary
+
+# Halt the system once configuration has finished.
+poweroff
+
+%packages
+@core
+%end
+EOF
+
+# Yum configuration.
+yum=$(mktemp)
+cat > $yum <<EOF
+[rhel$major]
+name=RHEL $major Server
+baseurl=$baseurl/Server/x86_64/os/
+enabled=1
+gpgcheck=0
+keepcache=0
+
+[rhel$major-source]
+name=RHEL $major Server Source
+baseurl=$baseurl/source/SRPMS/
+enabled=0
+gpgcheck=0
+keepcache=0
+
+[rhel$major-optional]
+name=RHEL $major Server Optional
+baseurl=$baseurl/Server/optional/x86_64/os/
+enabled=1
+gpgcheck=0
+keepcache=0
+
+[rhel$major-optional-source]
+name=RHEL $major Server Optional
+baseurl=$baseurl/Server/optional/source/SRPMS/
+enabled=0
+gpgcheck=0
+keepcache=0
+EOF
+
+# Clean up function.
+cleanup ()
+{
+    rm -f $ks
+    rm -f $yum
+    virsh undefine $tmpname ||:
+}
+trap cleanup INT QUIT TERM EXIT ERR
+
+virt-install \
+    --name=$tmpname \
+    --ram=2048 \
+    --cpu=host --vcpus=2 \
+    --os-type=linux --os-variant=rhel$major \
+    --initrd-inject=$ks \
+    --extra-args="ks=file:/`basename $ks` console=tty0 console=ttyS0,115200" \
+    --disk $(pwd)/$output,size=6 \
+    --location=$tree \
+    --nographics \
+    --noreboot
+
+# We have to replace yum config so it doesn't try to use RHN (it
+# won't be registered).
+guestfish --rw -a $output -m /dev/sda3 \
+  upload $yum /etc/yum.repos.d/download.devel.redhat.com.repo
+
+source $(dirname "$0")/compress.sh $output