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lxc-oracle: allow installing from arbitrary yum repo
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With this change, you can install a container from a mounted .iso, or any
yum repo with the necessary packages. Unlike the --url option, the repo
does not need to be a mirror of public-yum, but the arch and release must
be specified. For example to install OL6.5 from an .iso image:

mount -o loop OracleLinux-R6-U5-Server-x86_64-dvd.iso /mnt
lxc-create -n OL6.5 -t oracle -- --baseurl=file:///mnt -a x86_64 -R 6.5

The template will create two yum .repo files within the container such that
additional packages can be installed from local media, or the container can
be updated from public-yum, whichever is available. Local media must be bind
mounted from the host onto the containers' /mnt for the former .repo to work:

mount --bind /mnt $LXCPATH/OL6.5/rootfs/mnt

Signed-off-by: Dwight Engen <dwight.engen@oracle.com>
Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
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@hallyn
Dwight Engen authored and hallyn committed Apr 9, 2014
1 parent c2997f9 commit e120d05
Showing 1 changed file with 101 additions and 48 deletions.
149 changes: 101 additions & 48 deletions templates/lxc-oracle.in
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Expand Up @@ -492,6 +492,23 @@ container_rootfs_clone()
fi
}

container_rootfs_repo_create()
{
echo "# LXC generated .repo file" >$1
echo "[$2]" >>$1
echo "name=Oracle Linux $container_release_major.$container_release_minor ($basearch)" >>$1
echo "baseurl=$3/" >>$1
echo "enabled=1" >>$1
echo "skip_if_unavailable=1" >>$1

if [ "$4" != "" ]; then
echo "gpgkey=$yum_url/RPM-GPG-KEY-oracle-ol$container_release_major" >>$1
echo "gpgcheck=1" >>$1
else
echo "gpgcheck=0" >>$1
fi
}

container_rootfs_create()
{
cmds="rpm wget yum"
Expand Down Expand Up @@ -522,66 +539,81 @@ container_rootfs_create()
die "The template is busy."
fi

echo "Downloading release $container_release_major.$container_release_minor for $basearch"
echo "Yum installing release $container_release_major.$container_release_minor for $basearch"

# get yum repo file
if [ -n "$repourl" ]; then
yum_url=$repourl
else
yum_url=http://public-yum.oracle.com
fi
if [ $container_release_major = "4" ]; then
repofile=public-yum-el4.repo
elif [ $container_release_major = "5" ]; then
repofile=public-yum-el5.repo
elif [ $container_release_major = "6" ]; then
repofile=public-yum-ol6.repo
if [ $container_release_major = "4" -o $container_release_major = "5" ]; then
latest_L="el"
latest_U="EL"
else
die "Unsupported release $container_release_major"
fi
mkdir -p $container_rootfs/etc/yum.repos.d
wget -q $yum_url/$repofile -O $container_rootfs/etc/yum.repos.d/$repofile
if [ $? -ne 0 ]; then
die "Failed to download repo file $yum_url/$repofile"
latest_L="ol"
latest_U="OL"
fi

# yum will take $basearch from host, so force the arch we want
sed -i "s|\$basearch|$basearch|" $container_rootfs/etc/yum.repos.d/$repofile

# replace url if they specified one
if [ -n "$repourl" ]; then
sed -i "s|baseurl=http://public-yum.oracle.com/repo|baseurl=$repourl/repo|" $container_rootfs/etc/yum.repos.d/$repofile
sed -i "s|gpgkey=http://public-yum.oracle.com|gpgkey=$repourl|" $container_rootfs/etc/yum.repos.d/$repofile
fi

# disable all repos, then enable the repo for the version we are installing.
if [ $container_release_minor = "latest" ]; then
if [ $container_release_major = "4" -o $container_release_major = "5" ]; then
repo="el"$container_release_major"_"$container_release_minor
if [ -n "$baseurl" ]; then
# create .repo pointing at baseurl
repo="lxc-install"
mkdir -p $container_rootfs/etc/yum.repos.d
container_rootfs_repo_create \
$container_rootfs/etc/yum.repos.d/lxc-install.repo $repo $baseurl
else
# get public-yum repo file
if [ $container_release_major = "4" ]; then
repofile=public-yum-el4.repo
elif [ $container_release_major = "5" ]; then
repofile=public-yum-el5.repo
elif [ $container_release_major = "6" ]; then
repofile=public-yum-ol6.repo
elif [ $container_release_major = "7" ]; then
repofile=public-yum-ol7.repo
else
repo="ol"$container_release_major"_"$container_release_minor
die "Unsupported release $container_release_major"
fi
elif [ $container_release_major = "6" ]; then
if [ $container_release_minor = "0" ]; then
repo="ol"$container_release_major"_ga_base"
else
repo="ol"$container_release_major"_u"$container_release_minor"_base"

mkdir -p $container_rootfs/etc/yum.repos.d
wget -q $yum_url/$repofile -O $container_rootfs/etc/yum.repos.d/$repofile
if [ $? -ne 0 ]; then
die "Failed to download repo file $yum_url/$repofile"
fi

# yum will take $basearch from host, so force the arch we want
sed -i "s|\$basearch|$basearch|" $container_rootfs/etc/yum.repos.d/$repofile

# replace url if they specified one
if [ -n "$repourl" ]; then
sed -i "s|baseurl=http://public-yum.oracle.com/repo|baseurl=$repourl/repo|" $container_rootfs/etc/yum.repos.d/$repofile
sed -i "s|gpgkey=http://public-yum.oracle.com|gpgkey=$repourl|" $container_rootfs/etc/yum.repos.d/$repofile
fi
elif [ $container_release_major = "5" ]; then
if [ $container_release_minor = "0" ]; then
repo="el"$container_release_major"_ga_base"
elif [ $container_release_minor -lt "6" ]; then

# disable all repos, then enable the repo for the version we are installing.
if [ $container_release_minor = "latest" ]; then
repo=$latest_L""$container_release_major"_"$container_release_minor
elif [ $container_release_major = "6" -o $container_release_major = "7" ]; then
if [ $container_release_minor = "0" ]; then
repo="ol"$container_release_major"_ga_base"
else
repo="ol"$container_release_major"_u"$container_release_minor"_base"
fi
elif [ $container_release_major = "5" ]; then
if [ $container_release_minor = "0" ]; then
repo="el"$container_release_major"_ga_base"
elif [ $container_release_minor -lt "6" ]; then
repo="el"$container_release_major"_u"$container_release_minor"_base"
else
repo="ol"$container_release_major"_u"$container_release_minor"_base"
fi
elif [ $container_release_major = "4" -a $container_release_minor -gt "5" ]; then
repo="el"$container_release_major"_u"$container_release_minor"_base"
else
repo="ol"$container_release_major"_u"$container_release_minor"_base"
die "Unsupported release $container_release_major.$container_release_minor"
fi
elif [ $container_release_major = "4" -a $container_release_minor -gt "5" ]; then
repo="el"$container_release_major"_u"$container_release_minor"_base"
else
die "Unsupported release $container_release_major.$container_release_minor"
sed -i "s|enabled=1|enabled=0|" $container_rootfs/etc/yum.repos.d/$repofile
sed -i "/\[$repo\]/,/\[/ s/enabled=0/enabled=1/" $container_rootfs/etc/yum.repos.d/$repofile
fi
sed -i "s|enabled=1|enabled=0|" $container_rootfs/etc/yum.repos.d/$repofile
sed -i "/\[$repo\]/,/\[/ s/enabled=0/enabled=1/" $container_rootfs/etc/yum.repos.d/$repofile

# create rpm db, download and yum install minimal packages
mkdir -p $container_rootfs/var/lib/rpm
Expand Down Expand Up @@ -620,12 +652,19 @@ container_rootfs_create()
fi
if [ x"$redo_pkgs" != x ]; then
rpm --root $container_rootfs --nodeps -e $redo_pkgs
yum $yum_args install $redo_pkgs
lxc-unshare -s MOUNT yum -- $yum_args install $redo_pkgs
if [ $? -ne 0 ]; then
die "Unable to reinstall packages"
fi
fi

# if installing from a baseurl, create a .repo that the container
# can use to update to _latest from http://public-yum.oracle.com
container_rootfs_repo_create \
"$container_rootfs/etc/yum.repos.d/public-yum-"$latestL""$container_release_major".repo" \
$latest_L""$container_release_major"_latest" \
$yum_url"/repo/OracleLinux/"$latest_U""$container_release_major"/latest/$basearch" gpg

# these distributions put the rpm database in a place the guest is
# not expecting it, so move it
if [ $host_distribution = "Ubuntu" -o $host_distribution = "Debian" ]; then
Expand Down Expand Up @@ -681,7 +720,9 @@ usage()
-R|--release=<release> release to download for the new container
--rootfs=<path> rootfs path
-r|--rpms=<rpm name> additional rpms to install into container
-u|--url=<url> replace yum repo url (ie. local yum mirror)
-u|--url=<url> replace yum repo url (ie. Oracle public-yum mirror)
--baseurl=<url> use package repository (ie. file:///mnt)
arch and release must also be specified
-t|--templatefs=<path> copy/clone rootfs at path instead of downloading
-P|--patch=<path> only patch the rootfs at path for use as a container
-h|--help
Expand All @@ -691,13 +732,12 @@ EOF
return 0
}

options=$(getopt -o hp:n:a:R:r:u:t: -l help,rootfs:,path:,name:,arch:,release:,rpms:,url:,templatefs:,patch: -- "$@")
options=$(getopt -o hp:n:a:R:r:u:t: -l help,rootfs:,path:,name:,arch:,release:,rpms:,url:,templatefs:,patch:,baseurl: -- "$@")
if [ $? -ne 0 ]; then
usage $(basename $0)
exit 1
fi

arch=$(uname -m)
eval set -- "$options"
while true
do
Expand All @@ -712,6 +752,7 @@ do
-u|--url) repourl=$2; shift 2;;
-t|--templatefs) template_rootfs=$2; shift 2;;
--patch) patch_rootfs=$2; shift 2;;
--baseurl) baseurl=$2; shift 2;;
--) shift 1; break ;;
*) break ;;
esac
Expand All @@ -723,6 +764,18 @@ if [ "$(id -u)" != "0" ]; then
exit 1
fi

if [ -n "$baseurl" ]; then
if [ "$arch" = "" -o "$container_release_version" = "" ]; then
echo "The --arch and --release must be specified when using --baseurl"
usage
exit 1
fi
fi

if [ "$arch" = "" ]; then
arch=$(uname -m)
fi

if [ -n "$patch_rootfs" ]; then
container_rootfs="$patch_rootfs"
container_release_get $container_rootfs
Expand Down

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