#!/bin/bash

# /var/lib/lxc/nunatak/config

# example config file:
### Container
#lxc.utsname                             = nunatak
#lxc.rootfs                              = /var/lib/lxc/nunatak/rootfs
#lxc.arch                                = x86_64
##lxc.console                            = /var/log/lxc/nunatak.console
#lxc.tty                                 = 6
#lxc.pts                                 = 1024
#
### Capabilities
#lxc.cap.drop                            = mac_admin
#lxc.cap.drop                            = mac_override
#lxc.cap.drop                            = sys_admin
#lxc.cap.drop                            = sys_module
### Devices
## Allow all devices
##lxc.cgroup.devices.allow               = a
## Deny all devices
#lxc.cgroup.devices.deny                 = a
## Allow to mknod all devices (but not using them)
#lxc.cgroup.devices.allow                = c *:* m
#lxc.cgroup.devices.allow                = b *:* m
#
## /dev/console
#lxc.cgroup.devices.allow                = c 5:1 rwm
## /dev/fuse
#lxc.cgroup.devices.allow                = c 10:229 rwm
## /dev/null
#lxc.cgroup.devices.allow                = c 1:3 rwm
## /dev/ptmx
#lxc.cgroup.devices.allow                = c 5:2 rwm
## /dev/pts/*
#lxc.cgroup.devices.allow                = c 136:* rwm
## /dev/random
#lxc.cgroup.devices.allow                = c 1:8 rwm
## /dev/rtc
#lxc.cgroup.devices.allow                = c 254:0 rwm
## /dev/tty
#lxc.cgroup.devices.allow                = c 5:0 rwm
## /dev/urandom
#lxc.cgroup.devices.allow                = c 1:9 rwm
## /dev/zero
#lxc.cgroup.devices.allow                = c 1:5 rwm
#
### Limits
##lxc.cgroup.cpu.shares                  = 1024
##lxc.cgroup.cpuset.cpus                 = 0
##lxc.cgroup.memory.limit_in_bytes       = 256M
##lxc.cgroup.memory.memsw.limit_in_bytes = 1G
#
### Filesystem
#lxc.mount.entry                         = proc /var/lib/lxc/nunatak/rootfs/proc proc nodev,noexec,nosuid 0 0
#lxc.mount.entry                         = sysfs /var/lib/lxc/nunatak/rootfs/sys sysfs defaults,ro 0 0
##lxc.mount.entry                        = /srv/nunatak /var/lib/lxc/nunatak/rootfs/srv/nunatak none defaults,bind 0 0
#
### Network
#lxc.network.type                        = veth
#lxc.network.flags                       = up
##lxc.network.hwaddr                      = 00:FF:00:00:00:02
#lxc.network.link                        = br0
##lxc.network.name                        = eth0
#lxc.network.ipv4                        = 199.27.180.210/25
#lxc.network.ipv4.gateway                = 199.27.180.254



[ -z "$2" ] && echo "use: $0 LXCNAME FQDN vserver-block-ip-last-octet" && exit 1

olddir="`pwd`"
cd /var/lib/lxc

name=$1
fqdn=$2

ip="$2"

echo "making dir and rsyncing .rootfs-template/ to $name/rootfs"

if [ -d $name/rootfs ]; then 
  echo "$name/rootfs exists, skipping rsync of template (you made your own rootfs I guess"'!)'
else
  mkdir -p $name/rootfs
  ionice -c3 rsync -a --stats .rootfs-template/ $name/rootfs

  echo "setting up hostname, mailname, fixing postfix config"

  echo $name > $name/rootfs/etc/hostname
  echo $fqdn > $name/rootfs/etc/mailname
 
   sed "s/nunatak\.sizone\.org/$fqdn/" < $name/rootfs/etc/postfix/main.cf > /tmp/postfix-main.cf.$$
   mv /tmp/postfix-main.cf.$$ $name/rootfs/etc/postfix/main.cf
fi

echo "rsyncing inittab for terminal on screen console..."
rsync -avP .rootfs-template/etc/inittab $name/rootfs/etc

echo "creating config file..."
sed -e "s#nunatak#$name#g" -e "s#199\.27\.180\.210/25#199.27.180.$ip/25#g" < .config.template > $name/config

echo "symlinking config to /etc/lxc/auto/$name"
ln -s /var/lib/lxc/$name/config /etc/lxc/auto/$name 

echo "config created in $name/config, symlinked $name/config to /etc/lxc/$name"

echo "warning postfix listening on localhost only."

echo "start server - * IN A NEW SCREEN WINDOW* as it will be console - with

 lxc-start -n $name

"

cd "$olddir"