This document describes how to replace an Alpine installation with a newer version.
The upgrade process consist of the following steps:
- Backup current setup
- Upgrade Alpine CD/USB
- Execute upgrade script
- Save changes
Backing up current config
Its recommended to make a backup of your config before you start.
The idea is to save the (*apkovl*) from your media to a safe place.
If you need to rollback, simply revert to your old *apkovl.tar.gz*.
Backing up to media
You could replace the existing floppy with a new (dos-formatted) floppy and then run the command:
lbu ci floppy
Or you could use a USB to store your configuration.
lbu ci usb
Download new Alpine
Download latest ISO image (or USB image).
Upgrade CD media
Burn the ISO on a blank CD and replace the existing CD with the new.
/etc/init.d/modloop stop eject
Now you should insert the new media.
Upgrade USB media
On USB installations you can just download and unpack the latest tar directly to /media/usb.
$ wget -C /media/usb -q -O - \ http://distrib-coffee.ipsl.jussieu.fr/pub/linux/alpine/alpine/v1.7/usbdrive/alpine-1.7.22-i386.tar.gz \ | tar -zvx
Execute upgrade script
The new media has a upgrade script found on root level on media (/media/cdrom/upgrade or /media/usb/upgrade).
Start by executing this script (in our example below we use CD media).
Example on how a upgrade could look
Before actually upgrading packages it will get an overview what packages will be upgraded.
It migh look something like this:
~ $ /media/usb/upgrade Upgrading from alpine-1.7.2 to alpine-1.7.6 Will try to upgrade packages from fetching usb://apks/INDEX.md5.gz Looking for new packages... The following packages will be updated: alpine-baselayout-1.4.1-r1 < needs updating (index has 1.6.0) alpine-conf-0.9 < needs updating (index has 1.0) busybox-1.5.0-r1 < needs updating (index has 1.7.1) Press Enter to continue or Ctrl-c to abort.
Verify that it looks ok and press [enter] to start the upgrade.
As a first step the upgrade script will try to upgrade apk-tools, uclibc and busybox.
Then it will upgrade all packages by running 'apk_add -u'.
It will look something like this:
fetching usb://apks/busybox-1.7.1.apk updating busybox-1.5.0-r1 to busybox-1.7.1 fetching usb://apks/alpine-baselayout-1.6.0.apk updating alpine-baselayout-1.4.1-r1 to alpine-baselayout-1.6.0 fetching usb://apks/alpine-conf-1.0.apk updating alpine-conf-0.9 to alpine-conf-1.0
When then 'apk_add' application upgrades packages, it will detect that you have modified some config files.
Instead of overwriting your config, it will install the new config with the suffix '.apk-new'.
This way you are able to review and merge in changes from the default config to your own config file.
Config files that are untouched will just silently be replaced.
The 'upgrade' script will execute 'update-conf' to assist you in merging the config files.
It will first display a list of config files that you will need to take care of manually.
The following config files have been updated and need attention: /etc/profile /etc/modules /etc/inittab /etc/hosts /etc/init.d/syslog /etc/init.d/networking /etc/init.d/modloop
Afterward it will step through every file, displaying a diff and give you options to act:
--- /etc/profile 2007-05-31 14:11:47 +0000 +++ /etc/profile.apk-new 2007-09-07 06:33:36 +0000 @@ -1,4 +1,3 @@ export PATH=/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin export PAGER=less umask 022 -export LBU_MEDIA=usb New /etc/profile available: Quit, Next, Show diff, Edit new, Zap new, Use new (q/n/s/e/z/u) [s]:
In this case we have added 'export LBU_MEDIA=usb' so we don't need to specify the media to 'lbu'.
We want to keep our current file as it is so we just press 'z' (and [enter]) to zap the new config and keep the old. Next is file is '/etc/modules':
--- /etc/modules 2007-05-09 16:02:31 +0000 +++ /etc/modules.apk-new 2007-09-07 06:33:36 +0000 @@ -1,4 +1,2 @@ deadline-iosched af_packet -xt_state -xt_tcpudp New /etc/modules available: Quit, Next, Show diff, Edit new, Zap new, Use new (q/n/s/e/z/u) [s]:
Also here we just keep the current config by pressing 'z' since the modules are needed for our ipsec.
Next file is '/etc/inittab':
--- /etc/inittab 2007-06-20 13:21:20 +0000 +++ /etc/inittab.apk-new 2007-09-07 06:33:36 +0000 @@ -4,7 +4,7 @@ ::wait:/etc/init.d/rcL # Set up a couple of getty's -::respawn:/sbin/cttyhack /sbin/getty - 9600 vt100 +::respawn:/usr/bin/cttyhack /sbin/getty - 9600 vt100 tty2::respawn:/sbin/getty 38400 tty2 tty3::respawn:/sbin/getty 38400 tty3 tty4::respawn:/sbin/getty 38400 tty4 New /etc/inittab available: Quit, Next, Show diff, Edit new, Zap new, Use new (q/n/s/e/z/u) [s]:
This time the change is not caused by us, but its a change in the default config.
This is even related to where the login screen should appear so if we dont merge this change, we might not be able to see the login screen!
We choose 'u' to use the new config.
Continue go through every config file.
Sometimes you might want to edit the new file, or leave the upgrade process to take care of the config file manually by using option 'q'.
You can always resume later by either running the 'upgrade' script again or by executing 'update-conf -i'.
Now that all upgrades are done, we should save our settings to our media (which you hopefully have backed up).
lbu ci floppy
In most cases you will need to reboot Alpine (specially if there are changes in the kernel):
Note: If you know what you are doing, you might not need to reboot.
But make sure that all services affected by the upgrade are restarted.