Re: [Lxc-users] Monitoring per container
Very interesting to see and know about, thanks, though it looks like lxc/cgroups measurements are only on the roadmap (3.18, https://collectd.org/wiki/index.php/Roadmap) Dave From: ben.butlerc...@gmail.com [mailto:ben.butlerc...@gmail.com] On Behalf Of Ben Butler-Cole Sent: Saturday, May 11, 2013 2:46 PM To: David Parks Cc: lxc-users@lists.sourceforge.net Subject: Re: [Lxc-users] Monitoring per container Hi David There is a collectd plugin which reports per-container metrics. I haven't tried it. -Ben On 11 May 2013 07:43, David Parks davidpark...@yahoo.com wrote: Does anyone have any pointers on how I might monitor things like CPU and DISK activity PER CONTAINER? (Ubuntu 12.10 server here) I saw something on You Tube using RHL that demoed it beautifully, but I'm looking for something a bit more rudimentary, maybe that I could plug into Nagios or use to just see how things look under load. Running top-like utilities on the host doesn't really split it up well enough by container, even htop with cgroups is difficult at best. I really would love a view like this on the host, like an htop view grouped by cgroup: Containercpu IO network CN12.5% 3Mb/sec 1Mbit CN230.1%30Mb/sec7.2Mbit -- Learn Graph Databases - Download FREE O'Reilly Book Graph Databases is the definitive new guide to graph databases and their applications. This 200-page book is written by three acclaimed leaders in the field. The early access version is available now. Download your free book today! http://p.sf.net/sfu/neotech_d2d_may ___ Lxc-users mailing list Lxc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lxc-users -- Learn Graph Databases - Download FREE O'Reilly Book Graph Databases is the definitive new guide to graph databases and their applications. This 200-page book is written by three acclaimed leaders in the field. The early access version is available now. Download your free book today! http://p.sf.net/sfu/neotech_d2d_may___ Lxc-users mailing list Lxc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lxc-users
Re: [Lxc-users] Horrors using Debian Wheezy
On 05/11/2013 04:41 AM, Mason Loring Bliss wrote: Hi there! I'm trying to get LXC to work for me on Debian Wheezy/amd64 and I'm having a Hellish time. I'm following the advice on wiki.debian.org and other places, and I believe I'm creating my containers correctly, but when I launch a container, I get a bunch of messages about needing root to set a hostname, needing root to mount things, needing root to do various other things, and I see sshd fail to create keys, and at the very end I get nothing. No console. I can't use the console command to connect - I get nothing. The status tool says things are running. lxc-checkconfig says everything is hunky-dory and I'm not deviating from the instructions. Can someone suggest what might be going wrong here? Does it starts correctly if run it as root ? -- Learn Graph Databases - Download FREE O'Reilly Book Graph Databases is the definitive new guide to graph databases and their applications. This 200-page book is written by three acclaimed leaders in the field. The early access version is available now. Download your free book today! http://p.sf.net/sfu/neotech_d2d_may ___ Lxc-users mailing list Lxc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lxc-users
Re: [Lxc-users] Horrors using Debian Wheezy
I'm trying to get LXC to work for me on Debian Wheezy/amd64 and I'm having a Hellish time. I'm following the advice on wiki.debian.org and other places, and I believe I'm creating my containers correctly, but when I launch a container, I get a bunch of messages about needing root to set a hostname, needing root to mount things, needing root to do various other things, and I see sshd fail to create keys, and at the very end I get nothing. No console. I can't use the console command to connect - I get nothing. The status tool says things are running. lxc-checkconfig says everything is hunky-dory and I'm not deviating from the instructions. Can someone suggest what might be going wrong here? Hi, The template to create Debian containers that ships with Wheezy is broken. I tried to get this fixed before the Wheezy release but failed. Here is my solution from the bug report at: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=680469 snip First let me explain the problem. LXC uses shell scripts (they call them templates) to create the rootfs of a container, this is where things go wrong. The current Wheezy templates for creating a Debian rootfs use live-debconfig and this package will not be included in Wheezy. Although the scripts run, the generated rootfs is not configured correctly. Fortunately there is nothing wrong with LXC. Simply replacing the shell script with a version that does not depend on packages that are not in Wheezy will solve the problem. On my own computers i use a slightly modified version of the Debian template that came with Squeeze. My modifications are: 1) Installing a Squeeze rootfs instead of a Lenny rootfs 2) Replacing the deprecated DHCP package 3) Adding some mknod commands to create tty's in the generated rootfs 4) Support for the armel architecture. 5) For the network configuration the template expects that the host has a bridged network with the name br0 and a DHCP server running. I have updated this template to install a Wheezy rootfs and tested the result. It seems to work perfectly. So my solution is: remove the non-functioning Debian templates from the LXC package and replace them with my working template. You can download my Debian Wheezy template at: http://freedomboxblog.nl/wp-content/uploads/lxc-debian-wheezy.gz If you want to test the template: Extract the file to /usr/share/lxc/templates , change owner and group to root and make it executable. Create a container with: lxc-create -n wheezy01 -t debian-wheezy Start it: lxc-start -n wheezy01 The generated rootfs reports the container name to the DHCP server. If you happen to to run a combined DHCP/DNS server like dnsmasq this can be used to automatically create a domain-name for the container. (My own setup would create the DNS name wheezy01.freedom.box for the container. Handy for ssh connections...) Rob. http://freedomboxblog.nl /snip -- Learn Graph Databases - Download FREE O'Reilly Book Graph Databases is the definitive new guide to graph databases and their applications. This 200-page book is written by three acclaimed leaders in the field. The early access version is available now. Download your free book today! http://p.sf.net/sfu/neotech_d2d_may ___ Lxc-users mailing list Lxc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lxc-users
