On 19/02/2013, at 10:23 AM, Pascal Robert <prob...@macti.ca> wrote: > Le 2013-02-18 à 18:47, Paul Hoadley <pa...@logicsquad.net> a écrit : > >> I think they're just different. The instructions here: >> >> http://wiki.wocommunity.org/display/documentation/Deploying+on+Amazon+EC2 >> >> are about being able to bring an appserver up from scratch using scripts. >> Eyeballing that page right now, it might be a little incomplete and/or light >> on detail, but it's certainly an approach I like, for what that's worth. >> With a bit of effort, you can turn wo-install.sh into something just right >> for your own purposes—we've evolved it into something that allows us to >> bring up an appserver on a new instance with a single local command without >> even needing to log in. > > What are the advantages of doing this over building a template or a AMI?
They're just different points along a bootstrapping spectrum. WOlastic was way up the pre-baked end, where (if I recall correctly—I never tried it) the idea was you'd fire up an instance from the WOlastic AMI and you'd be essentially ready to go. This gives basically no flexibility (all the myriad arbitrary choices are fixed in the AMI), and would require creating a new AMI for every software upgrade or security fix you wanted to make. Your approach with packages is somewhere in the middle, though I presume you'll periodically find yourself needing to update those packages as well. And then the scripted approach is heading towards the other end, starting with a vanilla AMI like Amazon Linux, and adding all the pieces on the fly, including grabbing the latest wotaskd and JavaMonitor from the community build server. There are trade-offs at every move along the spectrum, and whether you see them as advantages or disadvantages will depend on your particular business case. -- Paul Hoadley http://logicsquad.net/
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