[Users] More on making an OpenVZ template
bh at udev.org
Sun Aug 21 11:26:43 EDT 2011
On Sun, Aug 21, 2011 at 4:10 PM, Kir Kolyshkin <kir at openvz.org> wrote:
> On 08/20/2011 12:18 AM, Sam Trenholme wrote:
>> I am continuing the work of making a tiny OpenVZ template. One
>> discovery I have is that, for the OpenVZ tools to work, not only is it
>> mandatory for the system to have the Bash shell, but also that /bin/sh
>> has to be a symlink to Bash. This is because the "vzctl" program
>> prepends the contents of the Bash-only
>> "/etc/vz/dists/scripts/functions" script to any script used by the
>> container to configure the system, and there does not appear to be any
>> way to configure a container to not use this Bash-only script.
>> In other words, any OpenVZ template without /bin/sh being an alias for
>> Bash can not be configured via the "vzctl" tools (nor the
>> corresponding Proxmox/SolusVM/whataever tools that call "vzctl").
>> This in mind, the next release of TinyVZ will include the Bash shell.
>> I actually prefer Bash over Busybox's "ash" shell; I *really* miss the
>> "!$" and "!*" shortcuts, as well as the "history" command, when using
>> this minimal shell.
> This is one way of doing things. The other way would be to rectify the
> '/etc/dists/scripts/functions' to not be dependent on bash.
> I am currently looking at it, so far I only found that it uses the
> 'function' keyword
> which is bashism. With that removed, it looks like it is working fine in
> either dash
> or busybox sh.
> I have committed the patch:
> And then a few more (to check it works in Debian without /bin/bash):
I have compiled it, and I can report it works, I have remove the bash
binary I got from tinyvz, and now it enters well in openwrt rootfs (I
have tested with the original vzctl 3.0.24 where it fails to enter if
there is no /bin/bash):
root at mybox /root/zoobab/openwrt-openvz # ./vzctl --version
vzctl version 184.108.40.206-70.git.382f306
root at mybox /root/zoobab/openwrt-openvz # ./vzctl enter 889
entered into CT 889
BusyBox v1.15.3 (2011-07-14 17:03:04 CEST) built-in shell (ash)
Enter 'help' for a list of built-in commands.
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|__| W I R E L E S S F R E E D O M
Backfire (10.03.1-RC5, r27608) --------------------------
* 1/3 shot Kahlua In a shot glass, layer Kahlua
* 1/3 shot Bailey's on the bottom, then Bailey's,
* 1/3 shot Vodka then Vodka.
root at OpenWrt:/#
Benjamin Henrion <bhenrion at ffii.org>
FFII Brussels - +32-484-566109 - +32-2-4148403
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