/[sysadmin-cookbook]/recepies/lxc/ve2lxc.sh
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Contents of /recepies/lxc/ve2lxc.sh

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Revision 206 - (show annotations)
Mon May 10 12:50:50 2010 UTC (13 years, 11 months ago) by dpavlin
File MIME type: application/x-sh
File size: 2424 byte(s)
remove function which is bashisam (and thus we work under dash as /bin/sh)

1 #!/bin/sh -x
2
3 test -z "$1" && echo "usage: $0 /path/to/ve/private [10.60.0.253 [hostname]]" && exit
4
5 dir=$1
6 ip=$2
7 hostname=$3
8 netmask=`grep netmask /etc/network/interfaces | head -1 | sed 's/^.*netmask *//'`
9 gateway=`grep gateway /etc/network/interfaces | head -1 | sed 's/^.*gateway *//'`
10
11 test -z "$ip" && ip=10.60.0.252
12 test -z "$hostname" && hostname=ve2lxc
13
14 path=/$dir/etc/inittab
15 tmp=/tmp/inittab
16
17 cp $path $tmp || exit
18
19 append() {
20 if ! grep "$1" $path ; then
21 echo "$1" >> $tmp
22 fi
23 }
24
25 append "z6:6:respawn:/sbin/sulogin"
26 append "1:2345:respawn:/sbin/getty 38400 console"
27 append "c1:12345:respawn:/sbin/getty 38400 tty1 linux"
28 append "c2:12345:respawn:/sbin/getty 38400 tty2 linux"
29 append "c3:12345:respawn:/sbin/getty 38400 tty3 linux"
30 append "c4:12345:respawn:/sbin/getty 38400 tty4 linux"
31
32 if ! diff -uw $path $tmp ; then
33 cp $path $path.old && mv $tmp $path
34 fi
35
36 lxc-stop -n $hostname
37 lxc-destroy -n $hostname
38
39 test -d /cgroup || mkdir /cgroup
40 grep /cgroup /etc/fstab || echo "cgroup /cgroup cgroup rw 0 0" >> /etc/fstab
41
42 grep eth0 $dir/etc/network/interfaces || cat << __interfaces__ > $dir/etc/network/interfaces
43 auto eth0 lo
44
45 iface lo inet loopback
46
47 iface eth0 inet static
48 address $ip
49 netmask $netmask
50 gateway $gateway
51
52 __interfaces__
53
54 echo $hostname > $dir/etc/hostname
55
56 echo "$ip $hostname" >> $dir/etc/hosts
57
58 conf=/tmp/$hostname.conf
59
60 cat << __lxc__ > $conf
61 lxc.utsname = $hostname
62 lxc.tty = 4
63 lxc.pts = 1024
64
65 lxc.network.type = veth
66 lxc.network.flags = up
67 lxc.network.link = br0
68 lxc.network.name = eth0
69 lxc.network.mtu = 1500
70 #lxc.network.hwaddr = AC:DE:48:00:00:01
71 # interface visible on host, part of bridge
72 #lxc.network.veth.pair = veth0
73
74 #lxc.mount = $MNTFILE
75 lxc.rootfs = $dir
76 # lxc.mount.entry=/opt /virtual/lxc/rootfs/opt none ro,bind 0 0
77
78 lxc.cgroup.devices.deny = a
79 # /dev/null and zero
80 lxc.cgroup.devices.allow = c 1:3 rwm
81 lxc.cgroup.devices.allow = c 1:5 rwm
82 # consoles
83 lxc.cgroup.devices.allow = c 5:1 rwm
84 lxc.cgroup.devices.allow = c 5:0 rwm
85 lxc.cgroup.devices.allow = c 4:0 rwm
86 lxc.cgroup.devices.allow = c 4:1 rwm
87 # /dev/{,u}random
88 lxc.cgroup.devices.allow = c 1:9 rwm
89 lxc.cgroup.devices.allow = c 1:8 rwm
90 lxc.cgroup.devices.allow = c 136:* rwm
91 lxc.cgroup.devices.allow = c 5:2 rwm
92 # rtc
93 lxc.cgroup.devices.allow = c 254:0 rwm
94 __lxc__
95
96 cp -v /etc/resolv.conf /$dir/etc/resolv.conf
97
98 mount | grep /cgroup || mount /cgroup || exit
99
100 lxc-create -n $hostname -f $conf && lxc-start -n $hostname

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