Re: first version of deployment config scripts for Ubuntu/AWS
Re: first version of deployment config scripts for Ubuntu/AWS
- Subject: Re: first version of deployment config scripts for Ubuntu/AWS
- From: John Huss <email@hidden>
- Date: Fri, 06 Mar 2015 15:44:40 +0000
There's a note in the build file -- due to WO bug don't use tomcat 8 unless you replace WOJavaServletAdapter or whatever its called. Use tomcat 7.
On Fri, Mar 6, 2015, 9:09 AM John Huss <
email@hidden> wrote:
Here's what I can do now:
On Thu, Mar 5, 2015 at 2:49 PM Paul Hoadley <
email@hidden> wrote:
Are you doing any of this in practice? How do you handle session persistence?
Yes, I have a very high traffic WO app deployed this way -- but it is purely web services and _javascript_, no components. It used EOF originally, but now uses Cayenne instead.
I have another app which is a more traditional one with many pages deployed this way as well, but it is not really in use yet. It has passed testing and works well.
I'm not doing session persistence. My web service/_javascript_ app doesn't use sessions; the other app does. The elastic load balancer supports sticky sessions, so sessions are routed to the same instance. This isn't ideal for many reasons but it is the same thing you get with a traditional deployment, so it's not a point for or against anything.
It's interesting to know that ELB-based sticky sessions works for WO. Without session persistence, though, isn't auto-scaling going to be a bit rough? If my session is stuck to an instance that auto-scaling is about to kill, my session is going to disappear, isn't it? Do you handle (or intend to handle) that in some way? Also, are the EC2 instances you're talking about here each running a single servlet app instance, or do you have some other setup for this?
It's easy to get started with a WAR deployment - the only thing you have to do that isn't built-in is to put your web service resources in the WEB-INF/static folder and set the base url for them. The standard build.xml file should be changed to do this automatically, but no one maintains wolips anymore.
Can you commit the change anyway? Interested parties (like me) could then just grab that file.
Thanks for discussing what you're doing here, very interesting.
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