Steve Loughran wrote:
jfuller wrote:
Steve Loughran wrote:
jfuller wrote:
Looks good during my first checks.
looks good on OSX 10.4.6, will be testing this release on a
'serious' build server farm over the weekend (rhe4).
how many servers constitutes serious?
the system consists of 6 servers, in pairs of 2 (dev/critical
towers)...allows client (and me) to deploy new build software (like
ant) easily without taking down critical build servers.
These server pairs each cater to different groups and roles in build
process which spans the globe;
Development build server pair: Is responsible for catering to a group
of 40+ developers worldwide, e.g. builds the software and deploys to
the same box they determine via svn branch/tag
Test/Integration build server pair: Is where we have to test
integration with some other systems (mainframe db and some websphere
specific stuff that is too much of a burden on dev build server)..in
addition run functional and
Deployment build server: selects tagged versions for build, final
processing with respect to security thingies and handover to
deployment system...which then deploy to a test farm...which in turn
is where the app itself is hit at speed and scale.
I doubled up in kit, because we had the resources....and I like to
keep things simple when working at such scale...cfengine helps out
with keeping everything in sync.
That sounds like quite a rigorous process.
yes, cfengine and lcfg can keep your stuff in control. There's also
games you can play with vmware/xen hosted images, where the real CPUs
just host the virtual machines, and those you replicate off managed
"gold" images.
yes, this is a technique I have tried, though I have to admit being a
bit 'fundamentally' leary about vmware/xen. I have been burned a few
times through the testing of software...which was failing due to issues
with virtual machine, though there was little to indicate this..which
meant many man hours spent fixing false positives. If I have any excess
(as you can see) I tend to spend it physically replicating
environments...though, if you say things are ok now a days...then I may
give it another go (perhaps as an optimisation step first!)
There is also
SmartFrog http://smartfrog.org/
Puppet http://reductivelabs.com/projects/puppet/index.html
yes I have yet to use smartfrog in a commercial setting, though I am a
big fan.
didnt even know about puppet, will take a look.
both of these have a non-XML language to describe system configuration,
and runtimes to bring up distributed apps. I will cover smartfog in the
deployment chapter of Java-Dev-with-Ant (Jim, would you like to review
that chapter?), while puppet is something I know of but havent used
would be an honour to review the chapter. just send it along.
myself. It could be better at low-level linux config, because smartfrog,
being built on java and rmi, needs a lot more of the system working
before it can start configuring across systems.
completely agree.
cheers, Jim Fuller
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