User:Jlo/Replacing Debian Jessie with Alpine remotely: Difference between revisions
< User:Jlo
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mkdir -p /media/${D}$i | mkdir -p /media/${D}$i | ||
mount -t f2fs /dev/${D}$i /media/${D}$i || exit 1 | mount -t f2fs /dev/${D}$i /media/${D}$i || exit 1 | ||
done | done | ||
### copy apkovl and apk/cache and stuff | ### copy apkovl and apk/cache and stuff | ||
| Line 123: | Line 120: | ||
for f in $(grep -r ${S} etc 2> /dev/null | cut -d: -f1|sort -u);do sed -i -e s/${S}/${D}/g $f;done | for f in $(grep -r ${S} etc 2> /dev/null | cut -d: -f1|sort -u);do sed -i -e s/${S}/${D}/g $f;done | ||
echo "/dev/sdb2 /media/sdb2 ext4 ro,relatime,errors=continue,user_xattr,acl 0 2" > etc/fstab | echo "/dev/sdb2 /media/sdb2 ext4 ro,relatime,errors=continue,user_xattr,acl 0 2" > etc/fstab | ||
# remaining partitions are for own stuff | |||
# partition 4 is the extended one | |||
# (we maybe could just skip 3 and directly jump to extended for own stuff to simplify install script) | |||
echo "/dev/sda3 /media/sda3 f2fs defaults,ro 0 2" >> etc/fstab | echo "/dev/sda3 /media/sda3 f2fs defaults,ro 0 2" >> etc/fstab | ||
for i in $(seq 5 16);do echo "/dev/sda$i /media/sda$i f2fs defaults 0 2" >> etc/fstab;done | for i in $(seq 5 16);do echo "/dev/sda$i /media/sda$i f2fs defaults 0 2" >> etc/fstab;done | ||
# partition 2 will hold apkovl and apk/cache | |||
rm etc/apk/cache | rm etc/apk/cache | ||
ln -s /media/${D}2/cache etc/apk/cache | ln -s /media/${D}2/cache etc/apk/cache | ||
ln -s /etc/init.d/local etc/runlevels/default/local | ln -s /etc/init.d/local etc/runlevels/default/local | ||
tar czf /media/${D}2/${name}.apkovl.tar.gz . || exit 1 | tar czf /media/${D}2/${name}.apkovl.tar.gz . || exit 1 | ||
### done | ### done | ||
sync | sync | ||
Revision as of 14:50, 18 August 2017
I want to "upgrade" 130 remote Debian Jessie embedded boxes to AlpineLinux in run-from-ram mode. I have already successfully and happily validated the second stage as this is a minor variation around the "setup-ownbox" script I have added to a standard USB-KEY apkovl.
Stage 1
something is wrong about init at reboot time :(
prepare-jessie-for-alpine
#!/bin/sh
# this must be fully automatic
export DEBIAN_FRONTEND=noninteractive
apt-get -y install rsync extlinux
# /boot is a separate partition
rm -fr /boot/boot
ln -sf . /boot/boot
# let's get system file from our install server
rsync -avzur my.server.home:debian/boot/* /boot/
rsync -avzur my.server.home:debian/apks /boot/
rsync -avzu my.server.home:debian/debian.apkovl.tar.gz /boot/
rsync -auv my.server.home:debian/.alpine-release /boot/
# prepare the config overlay
rm -fr /tmp/apkovl
mkdir /tmp/apkovl
tar xzf /boot/debian.apkovl.tar.gz -C /tmp/apkovl
# keep current active network connection(s) and identity
cp /etc/network/interfaces /tmp/apkovl/etc/network/
cp -r /etc/openvpn /tmp/apkovl/etc/
cp -r /etc/ssh /tmp/apkovl/etc/
cd /tmp/apkovl
# be sure the install media was not already customized for own apps
unlink etc/runlevels/default/local
# be sure active VPN connections are preserved
mkdir -p /tmp/apkovl/etc/init.d
for v in /tmp/apkovl/etc/openvpn/*.conf ; do
vn=$(basename $v|cut -d. -f1)
ln -fs openvpn /tmp/apkovl/etc/init.d/openvpn.$vn
ln -fs /etc/init.d/openvpn.$vn /tmp/apkovl/etc/runlevels/default/openvpn.$vn
done
# config done ; commit
tar czf /boot/debian.apkovl.tar.gz .
# now the booltoader ; this will kill the active grub...
cat > /boot/extlinux.conf << EOF
timeout 20
prompt 1
default hardened
label hardened
kernel /boot/vmlinuz-hardened
initrd /boot/initramfs-hardened
append alpine_dev=sda1:ext2 modloop=modloop-hardened modules=loop,cramfs,sd-mod,usb-storage,ext2 quiet
EOF
dd if=/usr/lib/syslinux/mbr/mbr.bin of=/dev/sda
extlinux -i /boot
# done
sync
reboot
usage:
~:# prepare-jessie-for-alpine
Stage 2
not tested yet in this procedure but used successfully (a small variant) to prepare new AL boxes.
setup-albox-from-debian
#!/bin/sh
BEGIN=$(date +%s)
name=$1
D=sda
echo "Manufacturing box named *${name}*..."
rc-service modloop stop
umount /media/${D}* || (echo "Unable to unmount ${D}. Aborting..." ; exit 1)
### Partition the SSD $D
# f2fs want partition of type ext2 in parted
parted -a cylinder -s /dev/${D} -- \
mklabel msdos \
mkpart primary fat32 0% 1% \
mkpart primary ext2 1% 2% \
mkpart primary ext2 2% 7% \
mkpart extended 7% 100% \
mkpart logical ext2 7% 9% \
mkpart logical ext2 9% 15% \
mkpart logical ext2 15% 20% \
mkpart logical ext2 21% 22% \
mkpart logical ext2 22% 23% \
mkpart logical ext2 23% 24% \
mkpart logical ext2 24% 25% \
mkpart logical ext2 25% 26% \
mkpart logical ext2 26% 27% \
mkpart logical ext2 27% 28% \
mkpart logical ext2 28% 29% \
mkpart logical ext2 29% 30% \
set 1 boot on \
|| exit 1
### prepare boot partition
mkfs.vfat /dev/${D}1 || exit 1
mkdir -p /media/${D}1
setup-bootable /media/${B} /dev/${D}1 || exit 1
mount -t vfat /dev/${D}1 /media/${D}1 || exit 1
### format partition to hold apkovl and apk/cache; it must be of ext? type
mkfs.ext4 -F -q /dev/${D}2 || exit 1
mkdir -p /media/${D}2
mount -t ext4 /dev/${D}2 /media/${D}2 || exit 1
### format remaining partitions with f2fs
for i in $(seq 3 16);do
[ $i -eq 4 ] && continue
mkfs.f2fs -q /dev/${D}$i || exit 1
mkdir -p /media/${D}$i
mount -t f2fs /dev/${D}$i /media/${D}$i || exit 1
done
### copy apkovl and apk/cache and stuff
rsync -azur --numeric-ids root@my.server.home:sda* /media/ || exit 1
### prepare new apkovl
rm -fr /tmp/template
mkdir -p /tmp/template
tar xzf /media/${S}2/$(hostname).apkovl.tar.gz -C /tmp/template || exit 1
rm /media/${D}2/$(hostname).apkovl.tar.gz
cd /tmp/template
rm -f etc/ssh/ssh_host_*
for f in $(grep -r $(hostname) etc 2> /dev/null | cut -d: -f1|sort -u);do sed -i -e s/$(hostname)/${name}/g $f;done
for f in $(grep -r ${S} etc 2> /dev/null | cut -d: -f1|sort -u);do sed -i -e s/${S}/${D}/g $f;done
echo "/dev/sdb2 /media/sdb2 ext4 ro,relatime,errors=continue,user_xattr,acl 0 2" > etc/fstab
# remaining partitions are for own stuff
# partition 4 is the extended one
# (we maybe could just skip 3 and directly jump to extended for own stuff to simplify install script)
echo "/dev/sda3 /media/sda3 f2fs defaults,ro 0 2" >> etc/fstab
for i in $(seq 5 16);do echo "/dev/sda$i /media/sda$i f2fs defaults 0 2" >> etc/fstab;done
# partition 2 will hold apkovl and apk/cache
rm etc/apk/cache
ln -s /media/${D}2/cache etc/apk/cache
ln -s /etc/init.d/local etc/runlevels/default/local
tar czf /media/${D}2/${name}.apkovl.tar.gz . || exit 1
### done
sync
umount /media/${D}*
END=$(date +%s)
DURATION=$(($END-$BEGIN))
echo "Manufacture process took $DURATION seconds to complete."
logger "Manufacture process took $DURATION seconds to complete."
reboot
Usage:
~:# setup-albox-from-debian mynewbox