This page (revision-45) was last changed on 23-Apr-2022 17:06 by Harry Metske

This page was created on 23-Apr-2022 17:05 by Harry Metske

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41 23-Apr-2022 17:05 21 KB Harry Metske to previous | to last

Page References

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Computerhok 2013
Computerhok 2013

Version management

Difference between version and

At line 533 added 60 lines
! lxc-rsync
To be able to quickly "copy/clone" lxc's (while having their own filesystem/lv already) :
%%small
{{{
root@apollo:~/bin# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda7 9.2G 5.3G 3.5G 61% /
udev 971M 12K 971M 1% /dev
tmpfs 389M 408K 389M 1% /run
none 5.0M 0 5.0M 0% /run/lock
none 972M 0 972M 0% /run/shm
cgroup 972M 0 972M 0% /sys/fs/cgroup
/dev/mapper/vg0-lvol.cn1 20G 7.4G 12G 40% /var/lib/lxc/cn1
/dev/mapper/vg0-lvol.cn4 5.0G 2.0G 2.7G 43% /var/lib/lxc/cn4
/dev/mapper/vg0-lvol.cn2 20G 6.7G 13G 36% /var/lib/lxc/cn2
/dev/mapper/vg0-lvol.cn3 3.0G 69M 2.8G 3% /var/lib/lxc/cn3
}}}
%%
I created the following ~root/bin/lxc-rsync script :
%%small
%%prettify
{{{
#!/bin/bash
#
# rsync on lxc with another
# args: <src lxc> <tgt lxc>
#
NUMARGS=$#
if [ $NUMARGS -ne 2 ]; then
echo "Usage: lxc-rsync <src lxc> <tgt lxc>"
exit 8
fi
SRCLXC=$1
TGTLXC=$2
SRCDIR=/var/lib/lxc/${SRCLXC}/rootfs
TGTDIR=/var/lib/lxc/${TGTLXC}/rootfs
if [ -d $SRCDIR -a -d $TGTDIR ]; then
echo "rsyncing from $SRCLXC to $TGTLXC"
cd $SRCDIR || exit 8
# save the old IP address
OLDIP=`grep address ${TGTDIR}/etc/network/interfaces | awk '{ print $NF}'`
rsync --exclude "tmp" --exclude "dev" --exclude "media" --exclude "mnt" --exclude "proc" --exclude "sys" --exclude "var/run" --verbose --recursive --links --perms --acls --times --owner --group --one-file-system --delete . $TGTDIR
# patching hostname and IP address
echo "patching /etc/hostname, /etc/hosts and /etc/network/interfaces ==> $TGTLXC / $OLDIP"
sed --in-place s/${SRCLXC}/${TGTLXC}/g ${TGTDIR}/etc/hostname
sed --in-place s/${SRCLXC}/${TGTLXC}/g ${TGTDIR}/etc/hosts
WRONGIP=`grep address ${TGTDIR}/etc/network/interfaces | awk '{ print $NF}'`
sed --in-place s/${WRONGIP}/${OLDIP}/g ${TGTDIR}/etc/network/interfaces
else
echo "either $SRCDIR or $TGTDIR does not exist"
exit 8
fi
}}}
%%
%%
This page (revision-45) was last changed on 23-Apr-2022 17:06 by Harry MetskeTop