<div dir="ltr"><div class="gmail_extra"><div class="gmail_extra"><div class="gmail_extra"><div class="gmail_extra">2015-01-15 5:12 GMT+09:00 Serge Hallyn <<a href="mailto:serge.hallyn@ubuntu.com">serge.hallyn@ubuntu.com</a>>:</div><div class="gmail_extra">> Quoting Smart Goldman (<a href="mailto:ytlec2014@gmail.com">ytlec2014@gmail.com</a>):</div><div class="gmail_extra">> > 2015-01-15 0:11 GMT+09:00 Serge Hallyn <<a href="mailto:serge.hallyn@ubuntu.com">serge.hallyn@ubuntu.com</a>>:</div><div class="gmail_extra">> ></div><div class="gmail_extra">> > > cgmanager is an lxc project, so no worries.</div><div class="gmail_extra">> ></div><div class="gmail_extra">> > Okay. and thank you for swift response.</div><div class="gmail_extra">> ></div><div class="gmail_extra">> > > A few things - first, running cgroup-bin alongside cgmanager is</div><div class="gmail_extra">> > probably a bad idea.</div><div class="gmail_extra">> ></div><div class="gmail_extra">> > Oh really? It is better to remove either one?</div><div class="gmail_extra">> > Another following 2 errors were output before installing these 2 things.</div><div class="gmail_extra">> > sshd[4603]: pam_systemd(sshd:session): Failed to create session: No such</div><div class="gmail_extra">> > file or directory</div><div class="gmail_extra">> > systemd-logind[2957]: Failed to create cgroup name=systemd:/user/0.user: No</div><div class="gmail_extra">> > such file or directory</div><div class="gmail_extra">> </div><div class="gmail_extra">> 0.user?  This is logging in as root?</div><div class="gmail_extra"><br></div><div class="gmail_extra">Yes. This log was recorded by logging in with root.</div><div class="gmail_extra">If I am right, it was output as 1000.user when I logged in with normal user.</div><div class="gmail_extra"><br></div><div class="gmail_extra">> > After executing 'apt-get -y install cgroup-bin cgmanager-utils', above 2</div><div class="gmail_extra">> > errors were removed.</div><div class="gmail_extra">> ></div><div class="gmail_extra">> > > Second, on 14.04 after install cgmanager</div><div class="gmail_extra">> > > you unfortunately need to 'sudo restart systemd-logind', then</div><div class="gmail_extra">> > > log out and log back in (or just ssh localhost) to get a new</div><div class="gmail_extra">> > > cgroup.  After that you should be able to create unprivileged containers.</div><div class="gmail_extra">> ></div><div class="gmail_extra">> > Now I tried 'sudo restart systemd-logind' and systemd-logind restarted.</div><div class="gmail_extra">> > After that I logged out, log back and execute 'reboot'.</div><div class="gmail_extra">> > However error log of cgmanager is still written on /var/log/auth.log.</div><div class="gmail_extra">> </div><div class="gmail_extra">> Create the file /etc/default/cgmanager containing the text:</div><div class="gmail_extra">> </div><div class="gmail_extra">> cgmanager_opts="--debug"</div><div class="gmail_extra">> </div><div class="gmail_extra">> Restart cgmanager (sudo stop cgmanager; sudo start cgmanager) and then</div><div class="gmail_extra">> login, and look at /var/log/upstart/cgmanager.log</div><div class="gmail_extra"><br></div><div class="gmail_extra">Here's /var/log/upstart/cgmanager.log after restarting and logging in the ubuntu with root. I found there is something like error "cgmanager:get_pid_cgroup_main: Could not determine the requestor cgroup".</div><div class="gmail_extra"><br></div><div class="gmail_extra">root@myhost:~# tail -f /var/log/upstart/cgmanager.log</div><div class="gmail_extra">UPSTART_JOB=cgmanager</div><div class="gmail_extra">TERM=linux</div><div class="gmail_extra">PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin</div><div class="gmail_extra">cgmanager_opts=--debug</div><div class="gmail_extra">PWD=/</div><div class="gmail_extra">cgm_extra_mounts=-m name=systemd,name=container,name=fairsched,name=beancounter</div><div class="gmail_extra">Mounted systemd onto /run/cgmanager/fs/none,name=systemd</div><div class="gmail_extra">found 1 controllers</div><div class="gmail_extra">buf is /run/cgmanager/agents/cgm-release-agent.systemd</div><div class="gmail_extra">Mounted systemd onto /run/cgmanager/fs/none,name=systemd</div><div class="gmail_extra">Connection from private client</div><div class="gmail_extra">GetPidCgroup: Client fd is: 6 (pid=442, uid=0, gid=0)</div><div class="gmail_extra">cgmanager:get_pid_cgroup_main: Could not determine the requestor cgroup</div><div class="gmail_extra">Disconnected from private client</div><div class="gmail_extra">Connection from private client</div><div class="gmail_extra">Create: Client fd is: 6 (pid=442, uid=0, gid=0)</div><div class="gmail_extra">Created /run/cgmanager/fs/none,name=systemd/user/0.user/c2.session for 442 (0:0)</div><div class="gmail_extra">cgmanager_create: returning 0; existed is -1</div><div class="gmail_extra">Connection from private client</div><div class="gmail_extra">Disconnected from private client</div><div class="gmail_extra">MovePid: Client fd is: 7 (pid=442, uid=0, gid=0)</div><div class="gmail_extra">963 moved to systemd:user/0.user/c2.session by 442's request</div><div class="gmail_extra">Connection from private client</div><div class="gmail_extra">Disconnected from private client</div><div class="gmail_extra">Chown: Client fd is: 6 (pid=442, uid=0, gid=0)</div><div class="gmail_extra">Chown: Client fd is: 6 (pid=442, uid=0, gid=0)</div><div class="gmail_extra">Connection from private client</div><div class="gmail_extra">Disconnected from private client</div><div class="gmail_extra">Chown: Client fd is: 7 (pid=442, uid=0, gid=0)</div><div class="gmail_extra">Chown: Client fd is: 7 (pid=442, uid=0, gid=0)</div><div class="gmail_extra">Disconnected from private client</div><div class="gmail_extra"><br></div><div class="gmail_extra">> > This error message is written even if I log out before reboot is executed</div><div class="gmail_extra">> > or I execute reboot via control panel which is outside of ubuntu system.</div><div class="gmail_extra">> ></div><div class="gmail_extra">> > > The message may be ignorable - the real question is, when you</div><div class="gmail_extra">> > > login, do you get a custom cgroup?  What does /proc/self/cgroup</div><div class="gmail_extra">> > > show?</div><div class="gmail_extra">> ></div><div class="gmail_extra">> > I am sorry. How can I know whether I got a custom cgroup?</div><div class="gmail_extra">> > Here is the contents of my /proc/self/cgroup.</div><div class="gmail_extra">> ></div><div class="gmail_extra">> > root@myhost:~# cat /proc/self/cgroup</div><div class="gmail_extra">> > 4:name=systemd:/user/1000.user/c1.session</div><div class="gmail_extra">> > 3:freezer,devices,name=container:/12042</div><div class="gmail_extra">> > 2:cpuacct,cpu,cpuset,name=fairsched:/12042</div><div class="gmail_extra">> > 1:blkio,name=beancounter:/12042</div><div class="gmail_extra">> > root@myhost:~#</div><div class="gmail_extra">> ></div><div class="gmail_extra">> > I appreciate your help and I apologize for troubling you.</div><div class="gmail_extra">> </div><div class="gmail_extra">> The /12042 is weird.  It looks like something libcgroup may have</div><div class="gmail_extra">> done for you.</div><div class="gmail_extra">> </div><div class="gmail_extra">> You may be able to work around this by adding the line:</div><div class="gmail_extra">> </div><div class="gmail_extra">> env cgm_extra_mounts="-m name=systemd,name=container,name=fairsched,name=beancounter"</div><div class="gmail_extra">> </div><div class="gmail_extra">> to /etc/default/cgmanager</div><div class="gmail_extra"><br></div><div class="gmail_extra">I added that line to /etc/default/cgmanager.</div><div class="gmail_extra">But the log "failed: invalid request" is still written.</div><div class="gmail_extra"><br></div><div class="gmail_extra">Here's my current /etc/default/cgmanager:</div><div class="gmail_extra">root@myhost:~# cat /etc/default/cgmanager</div><div class="gmail_extra">cgmanager_opts="--debug"</div><div class="gmail_extra">env cgm_extra_mounts="-m name=systemd,name=container,name=fairsched,name=beancounter"</div><div class="gmail_extra">root@myhost:~#</div><div class="gmail_extra"><br></div><div class="gmail_extra">Regards,</div><div><br></div></div></div></div></div>