On 23/07/16 18:38, rob e wrote:
On 23/07/16 17:49, Christoph Willing wrote:
I'm following the guide to run X apps in a container at:
https://www.stgraber.org/2014/02/09/lxc-1-0-gui-in-containers/
As a starting point, I have a normal unprivileged container running
perfectly. However when I change the id_map configuration to look like:
lxc.id_map = u 0 100000 1000
lxc.id_map = g 0 100000 1000
lxc.id_map = u 1000 1000 1
lxc.id_map = g 1000 1000 1
lxc.id_map = u 1001 101001 64535
lxc.id_map = g 1001 101001 64535
the container fails to start, claiming:
chris@d6:~/.local/share/lxc$ lxc-start -n x11-test-x86_64 -F
newuidmap: uid range [1000-1001) -> [1000-1001) not allowed
lxc-start: start.c: lxc_spawn: 1161 failed to set up id mapping
...
...
Sure enough, if I comment out the lines:
lxc.id_map = u 1000 1000 1
lxc.id_map = g 1000 1000 1
the container runs again - but it's that particular mapping that is
needed in this case.
I set up a log file to priority DEBUG but no extra clues there - it
just says the same thing.
I'm using:
lxc-2.0.1
cgmanager-0.39
with container config file attached.
Can anyone shed light on this problem please?
chris
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umm .. I have exactly that setup (user and group id mapping) and it
works for me. It's what I use for desktop integration. Did you change
the /etc/sub* files as per the following ?
https://www.stgraber.org/2014/01/17/lxc-1-0-unprivileged-containers/
[snip]
Yes, from that site I already had chris:100000:65536
What was missing was a chris:1000:1 entry, so now I have:
chris:1000:1
chris:100000:65536
which is allowing container startup without any error.
I see you have a root:1000:1 entry - that didn't work for me. I guess
you're running yours as privileged containers?
chris
And the /etc/sub* files (modified to protect the innocent ...)
/etc/subuid
<me>:100000:65536
<lxd>:165536:65536
root:165536:65536
<someone>:231072:65536
root:1000:1
/etc/subgid
<me>:100000:65536
<lxd>:165536:65536
root:165536:65536
<someone>:231072:65536
root:1000:1
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