[lxc-devel] [PATCH] oracle template: fixes for older releases
Dwight Engen
dwight.engen at oracle.com
Tue Mar 12 17:04:35 UTC 2013
This fixes some issues found by Oracle QA, including several cosmetic
errors seen during container bootup.
The rpm database needs moving on Debian hosts similar to on Ubuntu.
I took Serge's suggestions: Do the yum install in an unshared
mount namespace so the /proc mount done during OL4 install doesn't
pollute the host. No need to blacklist ipv6 modules.
Make the default release 6.3, unless the host is OL, then default
to the same version as the host (same as Ubuntu template does).
Signed-off-by: Dwight Engen <dwight.engen at oracle.com>
---
templates/lxc-oracle.in | 132 ++++++++++++++++++++++++++++++------------------
1 file changed, 84 insertions(+), 48 deletions(-)
diff --git a/templates/lxc-oracle.in b/templates/lxc-oracle.in
index e6bf489..aad21e8 100644
--- a/templates/lxc-oracle.in
+++ b/templates/lxc-oracle.in
@@ -9,7 +9,7 @@
# Modified for Oracle Linux 5
# Wim Coekaerts <wim.coekaerts at oracle.com>
#
-# Modified for Oracle Linux 6, combined OL5,6 into one template script
+# Modified for Oracle Linux 6, combined OL4,5,6 into one template script
# Dwight Engen <dwight.engen at oracle.com>
#
# This library is free software; you can redistribute it and/or
@@ -64,14 +64,16 @@ container_rootfs_configure()
mkdir -p $container_rootfs/etc/selinux
echo "SELINUX=disabled" >$container_rootfs/etc/selinux/config
fi
- sed -i 's|session[ ]*required[ ]*pam_selinux.so[ ]*close|#session required pam_selinux.so close|' $container_rootfs/etc/pam.d/login
- sed -i 's|session[ ]*required[ ]*pam_selinux.so[ ]*open|#session required pam_selinux.so open|' $container_rootfs/etc/pam.d/login
- sed -i 's|session[ ]*required[ ]*pam_loginuid.so|#session required pam_loginuid.so|' $container_rootfs/etc/pam.d/login
+ sed -i 's|session[ \t]*required[ \t]*pam_selinux.so[ \t]*close|#session required pam_selinux.so close|' $container_rootfs/etc/pam.d/login
+ sed -i 's|session[ \t]*required[ \t]*pam_selinux.so[ \t]*open|#session required pam_selinux.so open|' $container_rootfs/etc/pam.d/login
+ sed -i 's|session[ \t]*required[ \t]*pam_loginuid.so|#session required pam_loginuid.so|' $container_rootfs/etc/pam.d/login
+ # silence error in checking for selinux
+ sed -i 's|cat /proc/self/attr/current|cat /proc/self/attr/current 2>/dev/null|' $container_rootfs/etc/rc.sysinit
+ sed -i 's|cat /proc/self/attr/current|cat /proc/self/attr/current 2>/dev/null|' $container_rootfs/etc/rc.d/rc.sysinit
# configure the network to use dhcp. we set DHCP_HOSTNAME so the guest
# will report its name and be resolv'able by the hosts dnsmasq
- touch $container_rootfs/etc/resolv.conf
cat <<EOF > $container_rootfs/etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
BOOTPROTO=dhcp
@@ -82,6 +84,11 @@ NM_CONTROLLED=no
TYPE=Ethernet
EOF
+ # avoid error in ol5 attempting to copy non-existent resolv.conf
+ if [ $container_release_major = "5" ]; then
+ sed -i 's|resolv.conf.predhclient|resolv.conf.predhclient 2>/dev/null|' $container_rootfs/sbin/dhclient-script
+ fi
+
# set the hostname
cat <<EOF > $container_rootfs/etc/sysconfig/network
NETWORKING=yes
@@ -97,11 +104,7 @@ EOF
# set minimal hosts
echo "127.0.0.1 localhost $name" > $container_rootfs/etc/hosts
- # disable ipv6
- if [ -f $container_rootfs/etc/modprobe.d/blacklist.conf ]; then
- echo "blacklist ipv6" >>$container_rootfs/etc/modprobe.d/blacklist.conf
- echo "blacklist net-pf-10" >>$container_rootfs/etc/modprobe.d/blacklist.conf
- fi
+ # disable ipv6 on ol6
rm -f $container_rootfs/etc/sysconfig/network-scripts/init.ipv6-global
# this file has to exist for libvirt/Virtual machine monitor to boot the container
@@ -139,6 +142,12 @@ EOF
sed -i 's|action $"Setting network parameters|# LXC action $"Setting network parameters|' $container_rootfs/etc/init.d/NetworkManager 2>/dev/null
fi
+ # no need to attempt to mount /
+ sed -i 's|mount -f /$|# LXC mount -f /|' $container_rootfs/etc/rc.sysinit
+ sed -i 's|mount -f /$|# LXC mount -f /|' $container_rootfs/etc/rc.d/rc.sysinit
+ sed -i 's|action \$"Remounting root filesystem|/bin/true # LXC action $"Remounting root filesystem|' $container_rootfs/etc/rc.sysinit
+ sed -i 's|action \$"Remounting root filesystem|/bin/true # LXC action $"Remounting root filesystem|' $container_rootfs/etc/rc.d/rc.sysinit
+
# disable udev in the container
if [ $container_release_major = "4" ]; then
sed -i 's|\[ -x /sbin/start_udev \]|# LXC no udev|' $container_rootfs/etc/rc.sysinit
@@ -165,8 +174,10 @@ EOF
else
sed -i 's|\[ -x /sbin/hwclock|\[ 0 -eq 1|' $container_rootfs/etc/rc.d/init.d/halt
fi
- sed -i 's|/sbin/hwclock|/sbin/nohwclock|' $container_rootfs/etc/rc.sysinit
- sed -i 's|/sbin/hwclock|/sbin/nohwclock|' $container_rootfs/etc/rc.d/rc.sysinit
+ sed -i 's|^\[ -x /sbin/hwclock|\[ 0 -eq 1|' $container_rootfs/etc/rc.sysinit
+ sed -i 's|^\[ -x /sbin/hwclock|\[ 0 -eq 1|' $container_rootfs/etc/rc.d/rc.sysinit
+ sed -i 's|^/sbin/hwclock|# LXC /sbin/nohwclock|' $container_rootfs/etc/rc.sysinit
+ sed -i 's|^/sbin/hwclock|# LXC /sbin/nohwclock|' $container_rootfs/etc/rc.d/rc.sysinit
# dont start lvm
sed -i 's|action $"Setting up Logical Volume Management:"|#action $"Setting up Logical Volume Management:"|' $container_rootfs/etc/rc.sysinit
@@ -198,6 +209,9 @@ EOF
# dont try to unmount /dev/lxc devices
sed -i 's|&& $1 !~ /^\\/dev\\/ram/|\&\& $2 !~ /^\\/dev\\/lxc/ \&\& $1 !~ /^\\/dev\\/ram/|' $container_rootfs/etc/init.d/halt
+ # don't try to unmount swap
+ sed -i 's|\[ -f /proc/swaps \]|# LXC [ -f /proc/swaps ]|' $container_rootfs/etc/init.d/halt
+
# start a getty on /dev/console, /dev/tty[1-4]
if [ $container_release_major = "4" -o $container_release_major = "5" ]; then
sed -i '/1:2345:respawn/i cns:2345:respawn:/sbin/mingetty console' $container_rootfs/etc/inittab
@@ -281,6 +295,15 @@ EOF
mknod -m 666 $dev_path/full c 1 7
mknod -m 600 $dev_path/initctl p
+ # set selinux labels same as host
+ if which chcon >/dev/null 2>&1 ; then
+ for node in null zero random urandom pts shm \
+ tty tty0 tty1 tty2 tty3 tty4 full ;
+ do
+ chcon --reference /dev/$node $dev_path/$node 2>/dev/null
+ done
+ fi
+
# ensure /dev/ptmx refers to the newinstance devpts of the container, or
# pty's will get crossed up with the hosts (https://lkml.org/lkml/2012/1/23/512)
rm -f $container_rootfs/dev/ptmx
@@ -384,7 +407,8 @@ container_rootfs_clone()
btrfs subvolume delete $container_rootfs
btrfs subvolume snapshot $template_rootfs $container_rootfs || die "btrfs clone template"
else
- cp -ax $template_rootfs $container_rootfs || die "copy template"
+ echo "Copying rootfs ..."
+ cp -axT $template_rootfs $container_rootfs || die "copy template"
fi
}
@@ -392,7 +416,7 @@ container_rootfs_create()
{
cmds="rpm wget yum"
if [ $container_release_major -lt "6" ]; then
- if [ $host_distribution = "Ubuntu" ]; then
+ if [ $host_distribution = "Ubuntu" -o $host_distribution = "Debian" ]; then
db_dump_cmd="db5.1_dump"
db_load_cmd="db4.3_load"
fi
@@ -457,12 +481,16 @@ container_rootfs_create()
else
repo="ol"$container_release_major"_"$container_release_minor
fi
- elif [ $container_release_minor = "0" ]; then
- repo="ol"$container_release_major"_ga_base"
elif [ $container_release_major = "6" ]; then
- repo="ol"$container_release_major"_u"$container_release_minor"_base"
+ 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 -lt "6" ]; 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"
@@ -478,10 +506,12 @@ container_rootfs_create()
# create rpm db, download and yum install minimal packages
mkdir -p $container_rootfs/var/lib/rpm
rpm --root $container_rootfs --initdb
- yum_cmd="yum --installroot $container_rootfs --disablerepo=* --enablerepo=$repo -y --nogpgcheck"
+ yum_args="--installroot $container_rootfs --disablerepo=* --enablerepo=$repo -y --nogpgcheck"
min_pkgs="yum initscripts passwd rsyslog vim-minimal openssh-server dhclient chkconfig rootfiles policycoreutils oraclelinux-release"
- $yum_cmd install $min_pkgs
+ # we unshare the mount namespace because yum installing the ol4
+ # packages causes $rootfs/proc to be mounted on
+ lxc-unshare -s MOUNT yum -- $yum_args install $min_pkgs
if [ $? -ne 0 ]; then
die "Failed to download and install the rootfs, aborting."
fi
@@ -491,16 +521,26 @@ container_rootfs_create()
# that coreutils is installed, reinstall the packages so their POSTIN
# runs right. similarly, libutempter depends on libselinux.so.1 when
# it runs /usr/sbin/groupadd, so reinstall it too
+ redo_pkgs=""
if [ $container_release_major = "5" ]; then
- redo_pkgs="pam"
- if [ $container_release_minor -gt "1" ]; then
- redo_pkgs="$redo_pkgs rsyslog"
- fi
- if [ $container_release_minor -gt "5" ]; then
- redo_pkgs="$redo_pkgs libutempter"
+ if [ $container_release_minor = "latest" ]; then
+ redo_pkgs="pam rsyslog libutempter"
+ elif [ $container_release_minor -lt 2 ]; then
+ redo_pkgs="pam"
+ elif [ $container_release_minor -lt 6 ]; then
+ redo_pkgs="pam rsyslog"
+ elif [ $container_release_minor -gt 5 ]; then
+ redo_pkgs="pam rsyslog libutempter"
fi
+ fi
+ # shadow utils fails on ol4 and ol6.1
+ if [ $container_release_major = "4" -o \
+ $container_release_major = "6" -a $container_release_minor = "1" ]; then
+ redo_pkgs="shadow-utils"
+ fi
+ if [ x"$redo_pkgs" != x ]; then
rpm --root $container_rootfs --nodeps -e $redo_pkgs
- $yum_cmd install $redo_pkgs
+ yum $yum_args install $redo_pkgs
if [ $? -ne 0 ]; then
die "Unable to reinstall packages"
fi
@@ -508,7 +548,7 @@ container_rootfs_create()
# these distributions put the rpm database in a place the guest is
# not expecting it, so move it
- if [ $host_distribution = "Ubuntu" ]; then
+ if [ $host_distribution = "Ubuntu" -o $host_distribution = "Debian" ]; then
mv $container_rootfs/$HOME/.rpmdb/* $container_rootfs/var/lib/rpm
fi
@@ -531,12 +571,6 @@ container_rootfs_create()
rm -f $container_rootfs/var/lib/rpm/__db*
chroot $container_rootfs rpm --rebuilddb >/dev/null 2>&1
- # doing the yum install with release 4 packages causes proc in the
- # container to be mounted, which makes lxc-destroy fail.
- if [ $container_release_major = "4" ]; then
- umount $container_rootfs/proc
- fi
-
) 200>@LOCALSTATEDIR@/lock/subsys/lxc-oracle-$name
}
@@ -626,19 +660,6 @@ if [ "$arch" != "i386" -a "$arch" != "x86_64" ]; then
exit 1
fi
-container_rootfs="$cfg_dir/rootfs"
-
-if [ -n "$template_rootfs" ]; then
- container_release_get $template_rootfs
-else
- if [ -z "$container_release_version" ]; then
- echo "No release specified with -R, defaulting to 6.3"
- container_release_version="6.3"
- fi
- container_release_major=`echo $container_release_version |awk -F '.' '{print $1}'`
- container_release_minor=`echo $container_release_version |awk -F '.' '{print $2}'`
-fi
-
if which lsb_release >/dev/null 2>&1; then
host_distribution=`lsb_release --id |awk '{print $3}'`
host_release_version=`lsb_release --release |awk '{print $2}'`
@@ -662,7 +683,22 @@ else
fi
echo "Host is $host_distribution $host_release_version"
-trap cleanup SIGHUP SIGINT SIGTERM
+container_rootfs="$cfg_dir/rootfs"
+
+if [ -n "$template_rootfs" ]; then
+ container_release_get $template_rootfs
+else
+ if [ -z "$container_release_version" ]; then
+ if [ $host_distribution = "OracleServer" ]; then
+ container_release_version=$host_release_version
+ else
+ echo "No release specified with -R, defaulting to 6.4"
+ container_release_version="6.4"
+ fi
+ fi
+ container_release_major=`echo $container_release_version |awk -F '.' '{print $1}'`
+ container_release_minor=`echo $container_release_version |awk -F '.' '{print $2}'`
+fi
container_config_create
if [ -n "$template_rootfs" ]; then
--
1.7.12.3
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