356 lines
8.8 KiB
Bash
Executable file
356 lines
8.8 KiB
Bash
Executable file
#!/bin/bash
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# This is a modified version of /usr/share/lxc/templates/lxc-debian
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# that comes with Ubuntu 13.04 changed to suit vagrant-lxc needs
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set -e
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if [ -r /etc/default/lxc ]; then
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. /etc/default/lxc
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fi
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SUITE=${SUITE:-wheezy}
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MIRROR=${MIRROR:-http://ftp.debian.org/debian}
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configure_debian()
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{
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rootfs=$1
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hostname=$2
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release=$2
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# squeeze only has /dev/tty and /dev/tty0 by default,
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# therefore creating missing device nodes for tty1-4.
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for tty in $(seq 1 4); do
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if [ ! -e $rootfs/dev/tty$tty ]; then
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mknod $rootfs/dev/tty$tty c 4 $tty
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fi
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done
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# configure the inittab
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cat <<EOF > $rootfs/etc/inittab
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id:3:initdefault:
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si::sysinit:/etc/init.d/rcS
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l0:0:wait:/etc/init.d/rc 0
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l1:1:wait:/etc/init.d/rc 1
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l2:2:wait:/etc/init.d/rc 2
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l3:3:wait:/etc/init.d/rc 3
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l4:4:wait:/etc/init.d/rc 4
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l5:5:wait:/etc/init.d/rc 5
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l6:6:wait:/etc/init.d/rc 6
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# Normally not reached, but fallthrough in case of emergency.
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z6:6:respawn:/sbin/sulogin
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1:2345:respawn:/sbin/getty 38400 console
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#c1:12345:respawn:/sbin/getty 38400 tty1 linux
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c2:12345:respawn:/sbin/getty 38400 tty2 linux
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c3:12345:respawn:/sbin/getty 38400 tty3 linux
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c4:12345:respawn:/sbin/getty 38400 tty4 linux
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p6::ctrlaltdel:/sbin/init 6
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p0::powerfail:/sbin/init 0
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EOF
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# disable selinux in debian
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mkdir -p $rootfs/selinux
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echo 0 > $rootfs/selinux/enforce
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# configure the network using the dhcp
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cat <<EOF > $rootfs/etc/network/interfaces
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auto lo
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iface lo inet loopback
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auto eth0
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iface eth0 inet dhcp
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EOF
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# set the hostname
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cat <<EOF > $rootfs/etc/hostname
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$hostname
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EOF
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# set default locale
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cat <<EOF > $rootfs/etc/locale.gen
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en_US.UTF-8 UTF-8
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EOF
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echo "default locale set to en_US.UTF-8 UTF-8"
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chroot $rootfs locale-gen 'en_US.UTF-8' > /dev/null 2>&1
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chroot $rootfs update-locale LANG='en_US.UTF-8'
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echo 'update-locale done'
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# remove pointless services in a container
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chroot $rootfs /usr/sbin/update-rc.d -f checkroot.sh remove
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chroot $rootfs /usr/sbin/update-rc.d -f umountfs remove
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chroot $rootfs /usr/sbin/update-rc.d -f hwclock.sh remove
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chroot $rootfs /usr/sbin/update-rc.d -f hwclockfirst.sh remove
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echo "root:vagrant" | chroot $rootfs chpasswd
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if ! (grep -q vagrant $rootfs/etc/passwd); then
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chroot $rootfs useradd --create-home -s /bin/bash vagrant
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echo "vagrant:vagrant" | chroot $rootfs chpasswd
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chroot $rootfs adduser vagrant sudo >/dev/null 2>&1 || true
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chroot $rootfs cp /etc/sudoers /etc/sudoers.orig >/dev/null 2>&1 || true
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chroot $rootfs sed -i -e \
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's/%sudo\s\+ALL=(ALL:ALL)\s\+ALL/%sudo ALL=NOPASSWD:ALL/g' \
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/etc/sudoers >/dev/null 2>&1 || true
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fi
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return 0
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}
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cleanup()
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{
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rm -rf ${cache}/partial
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rm -rf ${cache}/rootfs
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}
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extract_rootfs()
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{
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tarball=$1
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arch=$2
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rootfs=$3
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echo "Extracting $tarball ..."
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mkdir -p $(dirname $rootfs)
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# Make sure the rootfs does not exist before extracting
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rm -rf $rootfs
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(cd `dirname $rootfs` && tar xfz $tarball)
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return 0
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}
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install_debian()
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{
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rootfs=$1
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release=$2
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tarball=$3
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mkdir -p /var/lock/subsys/
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(
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flock -x 200
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if [ $? -ne 0 ]; then
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echo "Cache repository is busy."
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return 1
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fi
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extract_rootfs $tarball $arch $rootfs
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if [ $? -ne 0 ]; then
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echo "Failed to copy rootfs"
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return 1
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fi
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return 0
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) 200>/var/lock/subsys/lxc
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return $?
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}
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copy_configuration()
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{
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path=$1
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rootfs=$2
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name=$3
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# if there is exactly one veth network entry, make sure it has an
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# associated hwaddr.
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nics=`grep -e '^lxc\.network\.type[ \t]*=[ \t]*veth' $path/config | wc -l`
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if [ $nics -eq 1 ]; then
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grep -q "^lxc.network.hwaddr" $path/config || cat <<EOF >> $path/config
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lxc.network.hwaddr = 00:16:3e:$(openssl rand -hex 3| sed 's/\(..\)/\1:/g; s/.$//')
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EOF
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fi
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grep -q "^lxc.rootfs" $path/config 2>/dev/null || echo "lxc.rootfs = $rootfs" >> $path/config
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cat <<EOF >> $path/config
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lxc.tty = 4
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lxc.pts = 1024
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lxc.utsname = ${name}
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# When using LXC with apparmor, uncomment the next line to run unconfined:
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#lxc.aa_profile = unconfined
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lxc.cgroup.devices.deny = a
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# Allow any mknod (but not using the node)
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lxc.cgroup.devices.allow = c *:* m
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lxc.cgroup.devices.allow = b *:* m
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# /dev/null and zero
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lxc.cgroup.devices.allow = c 1:3 rwm
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lxc.cgroup.devices.allow = c 1:5 rwm
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# consoles
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lxc.cgroup.devices.allow = c 5:1 rwm
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lxc.cgroup.devices.allow = c 5:0 rwm
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lxc.cgroup.devices.allow = c 4:0 rwm
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lxc.cgroup.devices.allow = c 4:1 rwm
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# /dev/{,u}random
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lxc.cgroup.devices.allow = c 1:9 rwm
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lxc.cgroup.devices.allow = c 1:8 rwm
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lxc.cgroup.devices.allow = c 136:* rwm
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lxc.cgroup.devices.allow = c 5:2 rwm
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# rtc
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lxc.cgroup.devices.allow = c 254:0 rwm
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#fuse
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lxc.cgroup.devices.allow = c 10:229 rwm
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#tun
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lxc.cgroup.devices.allow = c 10:200 rwm
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#full
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lxc.cgroup.devices.allow = c 1:7 rwm
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#hpet
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lxc.cgroup.devices.allow = c 10:228 rwm
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#kvm
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lxc.cgroup.devices.allow = c 10:232 rwm
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# mounts point
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lxc.mount.entry = proc proc proc nodev,noexec,nosuid 0 0
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lxc.mount.entry = sysfs sys sysfs defaults 0 0
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EOF
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if [ $? -ne 0 ]; then
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echo 'failed to add configuration'
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return 1
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fi
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}
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add_ssh_key()
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{
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user=$1
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if [ -n "$auth_key" -a -f "$auth_key" ]; then
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u_path="/home/${user}/.ssh"
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root_u_path="$rootfs/$u_path"
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mkdir -p $root_u_path
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cp $auth_key "$root_u_path/authorized_keys"
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chroot $rootfs chown -R ${user}: "$u_path"
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echo "Inserted SSH public key from $auth_key into /home/${user}/.ssh/authorized_keys"
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fi
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}
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disable_tmp_cleanup() {
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rootfs=$1
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chroot $rootfs /usr/sbin/update-rc.d -f checkroot-bootclean.sh remove
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chroot $rootfs /usr/sbin/update-rc.d -f mountall-bootclean.sh remove
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chroot $rootfs /usr/sbin/update-rc.d -f mountnfs-bootclean.sh remove
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}
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usage()
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{
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cat <<EOF
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$1 -h|--help [-a|--arch] [-d|--debug]
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[-F | --flush-cache] [-r|--release <release>] [ -S | --auth-key <keyfile>]
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release: the debian release (e.g. wheezy): defaults to host release on debian, otherwise uses latest stable
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arch: the container architecture (e.g. amd64): defaults to host arch
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auth-key: SSH Public key file to inject into container
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EOF
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return 0
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}
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options=$(getopt -o a:b:hp:r:xn:Fd:C -l arch:,help,path:,release:,name:,flush-cache,auth-key:,debug:,tarball: -- "$@")
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if [ $? -ne 0 ]; then
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usage $(basename $0)
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exit 1
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fi
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eval set -- "$options"
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release=wheezy # Default to the last Debian stable release
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arch=$(uname -m)
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# Code taken from debootstrap
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if [ -x /usr/bin/dpkg ] && /usr/bin/dpkg --print-architecture >/dev/null 2>&1; then
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arch=`/usr/bin/dpkg --print-architecture`
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elif type udpkg >/dev/null 2>&1 && udpkg --print-architecture >/dev/null 2>&1; then
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arch=`/usr/bin/udpkg --print-architecture`
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else
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arch=$(uname -m)
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if [ "$arch" = "i686" ]; then
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arch="i386"
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elif [ "$arch" = "x86_64" ]; then
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arch="amd64"
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elif [ "$arch" = "armv7l" ]; then
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arch="armel"
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fi
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fi
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debug=0
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hostarch=$arch
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while true
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do
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case "$1" in
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-h|--help) usage $0 && exit 0;;
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-p|--path) path=$2; shift 2;;
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-n|--name) name=$2; shift 2;;
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-T|--tarball) tarball=$2; shift 2;;
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-r|--release) release=$2; shift 2;;
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-S|--auth-key) auth_key=$2; shift 2;;
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-a|--arch) arch=$2; shift 2;;
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-d|--debug) debug=1; shift 1;;
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--) shift 1; break ;;
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*) break ;;
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esac
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done
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if [ $debug -eq 1 ]; then
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set -x
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fi
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if [ "$arch" == "i686" ]; then
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arch=i386
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fi
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if [ $hostarch = "i386" -a $arch = "amd64" ]; then
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echo "can't create amd64 container on i386"
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exit 1
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fi
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if [ -z "$path" ]; then
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echo "'path' parameter is required"
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exit 1
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fi
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if [ "$(id -u)" != "0" ]; then
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echo "This script should be run as 'root'"
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exit 1
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fi
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# detect rootfs
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config="$path/config"
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if grep -q '^lxc.rootfs' $config 2>/dev/null ; then
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rootfs=`grep 'lxc.rootfs =' $config | awk -F= '{ print $2 }'`
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else
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rootfs=$path/rootfs
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fi
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install_debian $rootfs $release $tarball
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if [ $? -ne 0 ]; then
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echo "failed to install debian $release"
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exit 1
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fi
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configure_debian $rootfs $release
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if [ $? -ne 0 ]; then
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echo "failed to configure debian $release for a container"
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exit 1
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fi
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copy_configuration $path $rootfs $name
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if [ $? -ne 0 ]; then
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echo "failed write configuration file"
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exit 1
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fi
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add_ssh_key vagrant
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# vagrant and / or plugins might mount some shared folders under /tmp by default
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# (like puppet manifests) and we need to make sure no shared folder gets its
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# contents removed because of it. For more information, please check:
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# https://github.com/fgrehm/vagrant-lxc/issues/68
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disable_tmp_cleanup $rootfs
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echo ""
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echo "##"
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echo "# The default user is 'vagrant' with password 'vagrant'!"
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echo "# Use the 'sudo' command to run tasks as root in the container."
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echo "##"
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echo ""
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