Re: Moving Jenkins master ASAP

On Tue, Aug 07, 2012 at 01:06:55PM -0400, Robert Middleswarth wrote: > On 08/07/2012 12:49 PM, Karsten 'quaid' Wade wrote: >> On 08/07/2012 09:40 AM, Ewoud Kohl van Wijngaarden wrote: >> >>> I agree with your concerns on the home based service for something >>> this critical as a master. One solution could be to revamp the >>> slave I provide into a master and use Roberts infra as slaves. It's >>> a VM running on our production RHEV cluster and has sufficient HA. >> My suggestion was just a stop-gap - run it at Robert's for a few weeks >> until we get new datacenter-based hosting. > Agreed >> I like your idea of revamping the slave to be the new master. That >> gets us running faster soonest. Then we can use Robert's hosts as >> slaves, and also bring up a dedicated box at a hosting facility to run >> multiple slaves. > I don't. Jenkins master really needs to have the profile of a > database server were the slaves don't need as much IO and can run > fine on systems with limit IO. As a stop gap converting his slave > to master might work but just like using the servers housed in my > home is a stop gap I would put that in the same list. The limited > IO we have seen from that VM would slow down everything just like > the EC2 instance. Granted we don't need ssd raid 10 array in the > box but a decent sata raid controller or even better a sas will > allow faster builds and room for growth. But does it also need much random IO when it's just master and not building? I think that uploading the artifacts is mostly sequential IO where SATA does a good enough job. I'm convinced that if we transform my slave into a master who's just a master we will have more than enough performance to last us for quite a bit.

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