On Tue, Mar 14, 2017 at 11:22:26AM +0100, Benoit Barthelet wrote: > ultimately I'd like to do this in python: > > lxc-attach --clear-env -n lxcws -v TERM=xterm > > So far I managed to clear the env variables doing the following, but I > didn't find a way to pass the TERM env variable. > > container.attach_wait(lxc.attach_run_command, > ["apt-get", "dist-upgrade", "-y"], > env_policy=lxc.LXC_ATTACH_CLEAR_ENV)
Easiest I think is to use your own attach function instead of the
generic lxc.attach_run_command. In that function you can then set
os.environ as you want and call subprocess to run the command you want.
In the lxc-ci code we have something like this:
def execute(self, cmd, cwd="/"):
def run_command(args):
cmd, cwd = args
os.environ['PATH'] = '/usr/sbin:/usr/bin:/sbin:/bin'
os.environ['HOME'] = '/root'
if "env" in config and "proxy" in config['env']:
os.environ["DEBIAN_FRONTEND"] = "noninteractive"
os.environ['http_proxy'] = config['env']['proxy']
os.environ['https_proxy'] = config['env']['proxy']
return subprocess.call(cmd, cwd=cwd)
if isinstance(cmd, str):
pid = self.container.init_pid
cmdpath = "/proc/%d/root/tmp/exec_script" % pid
with open(cmdpath, "w+") as fd:
fd.write(cmd)
os.chmod(cmdpath, 0o755)
cmd = ["/tmp/exec_script"]
print(" ==> Executing: \"%s\" in %s" % (" ".join(cmd), cwd))
return self.container.attach_wait(run_command,
(cmd, cwd),
env_policy=lxc.LXC_ATTACH_CLEAR_ENV)
--
Stéphane Graber
Ubuntu developer
http://www.ubuntu.com
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