Looking more into costs, it seems to be quite significant. Costs are calculated based on instance-hour. If it is up and running, it is billed. Testing on a Micro instance proved that performance is pretty unacceptably slow. Scaling up to an instance with 17 GB of memory improved things significantly. Latency with the RDS service seems significant but could be related to the relatively small size of the database (5 GB). Keeping an instance up and running 24X7 for a month will cost you several hundred bucks it seems, significantly more than Linode.
If you want to test yourself, give me your Amazon WS customer ID, and I will make the AMI available to you. Regards, Jason On Sat, Mar 12, 2011 at 6:11 PM, Jason Pickering <[email protected]> wrote: > I really have no idea about costs. I need to figure this out as part > of a budgeting exercise, and compare against Linode > > Linode are priced differently. EC2 is based on usage, where as Linonde > is more or less a fixed cost per month. I have DHIS2 running on both > at the moment, in order to compare the differences between the two in > terms of performance and costs. > > I guess the obvious advantage is scalability. I am using the Amazon > RDS as a backend, so I guess that scaling the front-end and backend is > going to be possible. It is pretty simple to scale Linode as well, and > the pricing is a lot more transparent, but I am not sure in terms of > how it will perform or scale when compared to EC2. > > I think an EC2 micro instance is for the most part free, so it is easy > to get started experimenting. This is what i chose for this image. You > can also install MySQL/Postgres on the instance and not use the RDS > backend. The RDS service costs, but it seems to be very unclear how > much it costs. Perhaps after a month's usage or so, I would be able to > provide more details. > > Another issue is how to scale this app. Multiple small instances which > are load balanced against each other, or bigger instances? I have > essentially no experience with this stuff ,so it would be good to get > others feedback. > > Let me clean the AMI up a bit and i can provide details. > > Regards, > Jason > > > On Sat, Mar 12, 2011 at 6:00 PM, Jo Størset <[email protected]> wrote: >> >> Den 12. mars 2011 kl. 12.09 skrev Jason Pickering: >> >>> Hi Everyone, >>> >>> For those of you may be interested, I have setup and configured an >>> Amazon EC2 instance of DHIS2 2.1 /Tomcat/Apache/Postgres. If you would >>> like to utilize the instance for your own purposes, let me know, and I >>> can give you more details of how you can get the image. >> >> Yes, please :) Started myself but never got much further than ubuntu... >> >> Have you looked at costs for ec2 vs other options like linode? >> >> Jo >> > > > > -- > Jason P. Pickering > email: [email protected] > tel:+260974901293 > -- Jason P. Pickering email: [email protected] tel:+260974901293 _______________________________________________ Mailing list: https://launchpad.net/~dhis2-devs Post to : [email protected] Unsubscribe : https://launchpad.net/~dhis2-devs More help : https://help.launchpad.net/ListHelp
