Re: [Lxc-users] Upgrading udev and plymouth in a lucid container
Quoting Elliot Pahl (elliot.p...@gmail.com): Upgrading udev and plymouth in a lucid container seems to require access to udev devices with the following lines in container/config lxc.cgroup.devices.allow = c 108:0 rwm lxc.cgroup.devices.allow = b 7:0 rwm lxc.cgroup.devices.allow = c 10:200 rwm Otherwise you get something along the lines of: Setting up udev (151-12.3) ... mknod: `/lib/udev/devices/ppp': Operation not permitted dpkg: error processing udev (--configure): subprocess installed post-installation script returned error exit status 1 dpkg: dependency problems prevent configuration of plymouth: plymouth depends on udev (= 149-2); however: Package udev is not configured yet. dpkg: error processing plymouth (--configure): dependency problems - leaving unconfigured No apport report written because the error message indicates its a followup error from a previous failure. Errors were encountered while processing: udev plymouth E: Sub-process /usr/bin/dpkg returned an error code (1) Can this be added to the ubuntu creation template? (I'm running lxc daily from https://launchpad.net/~ubuntu-lxc/+archive/daily). I think we might want to open a bug against udev and see if we can get it to not fail bc it can't create/open a specific device. Bug might be rejected, but I think it's the right place to handle this. -- Got Input? Slashdot Needs You. Take our quick survey online. Come on, we don't ask for help often. Plus, you'll get a chance to win $100 to spend on ThinkGeek. http://p.sf.net/sfu/slashdot-survey ___ Lxc-users mailing list Lxc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lxc-users
Re: [Lxc-users] [PATCH] Don't try to add host user's groups in container
On 07/25/2011 03:10 AM, Serge E. Hallyn wrote: When '-b user' is specified to lxc-ubuntu container creation template, do not automatically add all the groups of which user is a member on the host, to user's groups in the container. Signed-off-by: Serge Hallyn serge.hal...@ubuntu.com --- Applied. -- Got Input? Slashdot Needs You. Take our quick survey online. Come on, we don't ask for help often. Plus, you'll get a chance to win $100 to spend on ThinkGeek. http://p.sf.net/sfu/slashdot-survey ___ Lxc-users mailing list Lxc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lxc-users
[Lxc-users] unexpected device renaming behavior with phys network.types
Hi, I'm using 2.6.34 with patches applied from: http://www.kernel.org/pub/linux/kernel/people/gregkh/driver_core/2.6/2.6.34/ It seem that when I try to create a container where I rename the device e.g. lxc-execute --name net -s lxc.network.type=phys -s lxc.network.link=eth0 -work.name=eth1 -s lxc.network.flags=up bash When I exit the container, my eth0 becomes renamed to something else (in this case, dev2) root@localhost:/root ip link 1: lo: LOOPBACK,UP,LOWER_UP mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 2: dev2: BROADCAST,MULTICAST mtu 1500 qdisc noop state DOWN qlen 1000 link/ether 00:15:17:dd:a7:32 brd ff:ff:ff:ff:ff:ff 3: eth1: BROADCAST,MULTICAST mtu 1500 qdisc noop state DOWN qlen 1000 link/ether 00:15:17:dd:a7:33 brd ff:ff:ff:ff:ff:ff 4: eth2: BROADCAST,MULTICAST,UP,LOWER_UP mtu 1500 qdisc mq state UP qlen 1000 link/ether 00:15:17:d8:08:14 brd ff:ff:ff:ff:ff:ff 5: eth3: BROADCAST,MULTICAST mtu 1500 qdisc mq state DOWN qlen 1000 link/ether 00:15:17:d8:08:15 brd ff:ff:ff:ff:ff:ff 6: br0: BROADCAST,MULTICAST,UP,LOWER_UP mtu 1500 qdisc noqueue state UNKNOWN link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff I tried this out in 2.6.39, and I don't see the same behaviour. Is there a certain patch or set of patches that I need to fix this unexpected behaviour? Thanks! -- Got Input? Slashdot Needs You. Take our quick survey online. Come on, we don't ask for help often. Plus, you'll get a chance to win $100 to spend on ThinkGeek. http://p.sf.net/sfu/slashdot-survey ___ Lxc-users mailing list Lxc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lxc-users
[Lxc-users] lxc-console over ssh
Hi, quick one that is puzzling me. Do the lxc commands work over ssh ? I am trying to open a console on a remote host. I try this: $ ssh remote_host lxc-console -n vps_on_remote_host But I get an error: lxc-console: '0' is not a tty lxc-console: failed to setup tios Other commands work fine like this $ ssh remote_host lxc-ls works fine. $ ssh remote_host lxc-start -n vps_on_remote_host also works fine but the output (boot messages) don't appear in the ssh session. The ssh session appears to hang until the container is closed down. What am I missing? In case you're wondering... I can't ssh vps_on_remote_host because it isn't set up. The remote_host is in another room making the ssh more convenient. Thanks, John -- Got Input? Slashdot Needs You. Take our quick survey online. Come on, we don't ask for help often. Plus, you'll get a chance to win $100 to spend on ThinkGeek. http://p.sf.net/sfu/slashdot-survey ___ Lxc-users mailing list Lxc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lxc-users
Re: [Lxc-users] lxc-console over ssh
On Wed, 2011-07-27 at 21:12 +0100, John wrote: Hi, quick one that is puzzling me. Do the lxc commands work over ssh ? I am trying to open a console on a remote host. I try this: $ ssh remote_host lxc-console -n vps_on_remote_host But I get an error: lxc-console: '0' is not a tty lxc-console: failed to setup tios That's because ssh did not allocate a pty for your command. Try this: ssh -t remote_host lxc_console -n vps_on_remote Other commands work fine like this $ ssh remote_host lxc-ls Doesn't need a pty. works fine. $ ssh remote_host lxc-start -n vps_on_remote_host also works fine but the output (boot messages) don't appear in the ssh session. The ssh session appears to hang until the container is closed down. What am I missing? In case you're wondering... I can't ssh vps_on_remote_host because it isn't set up. The remote_host is in another room making the ssh more convenient. Thanks, John Regards, Mike -- Michael H. Warfield (AI4NB) | (770) 985-6132 | m...@wittsend.com /\/\|=mhw=|\/\/ | (678) 463-0932 | http://www.wittsend.com/mhw/ NIC whois: MHW9 | An optimist believes we live in the best of all PGP Key: 0x674627FF| possible worlds. A pessimist is sure of it! signature.asc Description: This is a digitally signed message part -- Got Input? Slashdot Needs You. Take our quick survey online. Come on, we don't ask for help often. Plus, you'll get a chance to win $100 to spend on ThinkGeek. http://p.sf.net/sfu/slashdot-survey___ Lxc-users mailing list Lxc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lxc-users
Re: [Lxc-users] lxc-console over ssh
Hello John, ssh has different (pseudo) terminal allocation if you execute a command. Please use ssh -t to force pseudo-tty allocation. ssh -t remote_host lxc-console -n vps_on_remote_host The other way around is to ssh remote_host and work with lxc-* as normal. For lxc-start it is not very convenient, so I recommend to use the start sequence from some Archlinux start script screen -dmS init-vps_on_remote_host lxc-start -n vps_on_remote_host. Best regards Jörg On Wednesday 27 July 2011 21:12:36 John wrote: Hi, quick one that is puzzling me. Do the lxc commands work over ssh ? I am trying to open a console on a remote host. I try this: $ ssh remote_host lxc-console -n vps_on_remote_host But I get an error: lxc-console: '0' is not a tty lxc-console: failed to setup tios Other commands work fine like this $ ssh remote_host lxc-ls works fine. $ ssh remote_host lxc-start -n vps_on_remote_host also works fine but the output (boot messages) don't appear in the ssh session. The ssh session appears to hang until the container is closed down. What am I missing? In case you're wondering... I can't ssh vps_on_remote_host because it isn't set up. The remote_host is in another room making the ssh more convenient. Thanks, John -- Got Input? Slashdot Needs You. Take our quick survey online. Come on, we don't ask for help often. Plus, you'll get a chance to win $100 to spend on ThinkGeek. http://p.sf.net/sfu/slashdot-survey ___ Lxc-users mailing list Lxc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lxc-users -- Got Input? Slashdot Needs You. Take our quick survey online. Come on, we don't ask for help often. Plus, you'll get a chance to win $100 to spend on ThinkGeek. http://p.sf.net/sfu/slashdot-survey ___ Lxc-users mailing list Lxc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lxc-users
[Lxc-users] Can a process change its container membership ?
Hi, I had an architectural question on containers. I wanted to use containers to run multiple instances of the same application with different resource allocation (CPU, memory). The problem is that I have user/kernel space drivers that access network processors and I might not be able to run multiple instances in this case. These processes need to serve requests from applications running in different containers. So I need these processes to run in a container that can communicate with other containers. But since this process will serve requests from other containers it should be able to honor the CPU resource isolation that containers provide. To do this I could embed an id in the IPC that maps to the container but I still need the serving process to be able to 'switch' in to a different container membership based on which container I received the request from. Is that something that can be done today or is there another way to do this. Thanks, Vinay -- Got Input? Slashdot Needs You. Take our quick survey online. Come on, we don't ask for help often. Plus, you'll get a chance to win $100 to spend on ThinkGeek. http://p.sf.net/sfu/slashdot-survey___ Lxc-users mailing list Lxc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lxc-users
Re: [Lxc-users] Can a process change its container membership ?
Quoting Vinay Wagh (vinay.h.w...@gmail.com): Hi, I had an architectural question on containers. I wanted to use containers to run multiple instances of the same application with different resource allocation (CPU, memory). The problem is that I have user/kernel space drivers that access network processors and I might not be able to run multiple instances in this case. These processes need to serve requests from applications running in different containers. So I need these processes to run in a container that can communicate with other containers. But since this process will serve requests from other containers it should be able to honor the CPU resource isolation that containers provide. To do this I could embed an id in the IPC that maps to the container but I still need the serving process to be able to 'switch' in to a different container membership based on which container I received the request from. Is that something that can be done today or is there another way to do this. Just the moving to different resource isolations, yeah that's simple enough. Just move yourself into the container's cgroup, then (assuming you're not using the ns cgroup) back out. I.e. if the container task's /proc/self cgroup shows: 5:freezer:/apache2 4:memory:/apache2 3:devices:/apache2 2:cpuacct:/apache2 1:cpu:/apache2 and you want the same cpu, cpuacct, and memory restrictions, then do for f in cpu cpuacct memory; do echo $$ /sys/fs/cgroup/$f/apache2/tasks done Then to jump back out: for f in cpu cpuacct memory; do echo $$ /sys/fs/cgroup/$f/tasks done -serge -- Got Input? Slashdot Needs You. Take our quick survey online. Come on, we don't ask for help often. Plus, you'll get a chance to win $100 to spend on ThinkGeek. http://p.sf.net/sfu/slashdot-survey ___ Lxc-users mailing list Lxc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lxc-users
