On Thu, 8 Jul 2010, Whit Blauvelt wrote: > On Thu, Jul 08, 2010 at 06:46:20PM +0100, Gordon Henderson wrote: >> >> Sort of thinking out loud, but looking for suggestions/ideas ... >> >> So I have a host with 20 containers and each of these 'servers' runs cron >> jobs - and one of them is to do an MRTG run every 5 minutes, so every 5 >> minutes, ka-chung, 20 jobs start at the same time which sort of has a bit >> of a crowbarring effect... > > You could fudge it. For instance, I have two cron jobs that I want to run on > alternate minutes. I give these as (in an /etc/cron.d file, thus the > userid): > > */2 * * * * userid do_the_first_thing > */2 * * * * userid sleep 60;do_the_second_thing > > There may well be an elegant way to do it, which this is not, but it does > work to stagger jobs.
Hm. My situation is that I have: */5 * * * * root mrtg inside every container, however exending that logic, I could do something like: */5 * * * root sleep `cat /etc/nodeDelay` ; mrtg and I just keep /etc/nodeDelay to be 0, 10, 20, 30, 40, 50, etc. in each different container (10 seconds as mrtg is run every 5 seconds and I'm aiming for 20 containers per host for this application) I could probably be clever and do it by MAC address as each container has consecutive MAC addresses, but ... However I've thought of something else - I'm running mrtg to get network traffic (for now - I want cpu cycles for each container later - if that's possible) so I could just run it on the host for each veth interface - however each one is created with a seemingly random name - is there any way to fix the name for each container? Do the names change at boot time, or are they fixed at lxc-create time? (Thats the trouble with thinking out loud, you go off on a tangent - or at least I do!) Cheers, Gordon ------------------------------------------------------------------------------ This SF.net email is sponsored by Sprint What will you do first with EVO, the first 4G phone? Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first _______________________________________________ Lxc-users mailing list Lxc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lxc-users
