amazon ec2arcgis-serveropen-source-gispostgresqlqgis
Is it possible to connect a QGIS Desktop 1.8.0 to an ArcGIS Server 10.0 ? and of course publish services on it?.
The configuration would be like this Quantum GIS-> ArcGIS Server 10.0 on Amazon EC2+ POstgreSQL (+PostGIS)-> web app.
Is it possible to create a configuration like this? Do you think I could use it for networking?
I can't speak for sde, but I did setup my postgresql/postgis database so that it could be accessible. I did have to open up a port for the postgresql databases(for me, was 5432 and 5433).
This was a windows instance, so I think I also had to open them on the firewall (not sure if I'm remembering that correctly).
Maybe if you added an allowed tcp connection of 1433 to your instance's security group, it'll let you through to your sql server db. Then you should be able to use the sde:sqlserver:<ip_address> to connect.
When picking an architecture for a service that relies so much on a 'classic' architecture like web maps never underestimate the effectiveness of more traditional hosting solutions like RackSpace Cloud Servers or Linode.
You will have much less choices to make (like use S3 or not, load balancers or not, backups, etc or not and how much is that going to cost?) whose outcome is difficult to predict AND, more importantly you will be able to use tools that you are already familiar with.
Having gone through the same myself some time ago I can tell you that the critical factors in my decision to host a web maps service on Rackspace rather than AWS were:
With this I'm not saying that Amazon AWS is inferior to others, I'm just saying that sometimes traditional hosting solutions can scale as well as Cloud-based ones. A notable example is the StackExchange network itself.
So, in your case I would start up a large instance on Rackspace and then load all the data in a local Postgis instance. Then, after configuring the rendering engine I would seed the cache. A large instance will complete the seeding process fast enough so that it doesn't become too expensive to run. You can store tiles in the fs, MTBtiles, even on S3 (btw, you can serve S3 data on a CDN with CloudFront).
After the seeding completed I would reboot the server and resize it into a small (maybe even 512MB) instance as at that point it would only have to serve static data.
This is getting a kinda long answer so I'm going to stop here. If you want me to elaborate on certain aspects just drop a comment.
Disclaimer: I am not affiliated with Rackspace, Linode, or any other provider I cited.
Best Answer
According to my understanding...
You can install all this software on Amazon machine.
Regarding connection-- You can insert ArcGIS Server WMS to QGIS (Using ADD WMS Layer)
You can not publish data from QGIS to ArcGIS Server. Its totally different architecture (open source/closed Source)
Regarding PostGIS Yes..you can install it on AMI Machine and you can connect from ArcGIS desktop to PostGIS (Add Spatial Server option in ArcCatalog)
If you want to publish data then you need to put your data in ArcMap than publish as map service (to ArcGIS Server & then create the Web application) but from Q-GIS you can not do these tasks..
I hope this will help you..let us know if you have any questions..thanks