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• I get a 403 when requesting a JS file from CloudFront

  - by Roland

  This is new to me so please excuse me if I have no idea what I'm talking about (: I'm trying to set up my own CDN with CloudFront and S3 through a subdomain by adding a CNAME to that subdomain to point to the CloudFront. It seems like I get a 403 when trying to load the file, this is the original s3 link : https://s3.amazonaws.com/chaoscod3r_aws_cdn/libs/polyfills/json3_polyfill.js ; which seems to be working after setting the permission to everyone to open / download. But when trying to use the subdomain to request the file : http://cdn.chaoscod3r.com/libs/polyfills/json3_polyfill.js ; it seems like I get that 403. Could anyone help me out with this one ?

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• Backing up data (including mysqldumps) to S3

  - by seengee

  We have a web app on a number of servers and we want to add an additional layer of redundancy by backing up the key data to S3. The key data is the MySQL database and a folder containing dynamically created site assets - predominantly images. Some kind of rsync based solution would initially seem the best plan. A couple of years ago we played with S3cmd (in particular s3cmd sync) with some success but we didn't find it particularly reliable although this may have changed since. Its occurred to me though that a rsync solution might not work particularly well with a single db.sql file created with mysqldump and I assume this means the whole database getting transferred each time, with multiple databases of over 1GB this is going to add up to a lot of traffic (and $s) very quickly. With the image files I could simply just transfer files modified within the last day which would be far more simple. What approach should I look at?

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• how do I allow ONLY my EC2 instances to access a specific S3 bucket

  - by john unkas

  I'm using S3 to host files that will be used to bootstrap my instances, but having a hard time setting up S3 so that only my instances will have read access, as I don't want anyone else to be able to download the config packages and scripts.

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• How to add a second domain to an EC2 instance with Elastic & Route 53

  - by memeLab

  I've got my domain site.com running on EC2, using Elastic IP and Route 53. I want to park site.net so that it resolves to the same site.. I've looked up Migrating an Existing Domain to Route 53 in the docs, but can't find mention of how to add a second domain! I figured I'd have to create an A record, but when I do so, the record is created site.net.site.com .. not quite what I'm after! I've also done searches for mixes of 'route 53', 'park domain', 'addon domain', 'second domain', but no dice... My prior experience is with cPanel and Plesk, so I'm a bit lost! Any pointers would be appreciated! TIA

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• Conflicting ip routes with local table on attaching a virtual network interface

  - by user1071840

  I have an EC2 instance with these ip rules: $ sudo ip rule show 0: from all lookup local 32766: from all lookup main 32767: from all lookup default I can attach an elastic network interface to it with a private IP. Say the IP of my machine is 10.1.3.12 and the IP of the interface is 10.1.1.190. As soon as I attach the interface to my machine a new entry is added to the routing policy and local routing table: sudo ip rule show 0: from all lookup local 32765: from 10.1.1.190 lookup 10003 32766: from all lookup main 32767: from all lookup default $ sudo ip route show table local broadcast 10.1.1.0 dev eth3 proto kernel scope link src 10.1.1.190 local 10.1.1.190 dev eth3 proto kernel scope host src 10.1.1.190 broadcast 10.1.1.255 dev eth3 proto kernel scope link src 10.1.1.190 broadcast 10.1.3.0 dev eth0 proto kernel scope link src 10.1.3.12 local 10.1.3.12 dev eth0 proto kernel scope host src 10.1.3.12 broadcast 10.1.3.255 dev eth0 proto kernel scope link src 10.1.3.12 broadcast 127.0.0.0 dev lo proto kernel scope link src 127.0.0.1 local 127.0.0.0/8 dev lo proto kernel scope host src 127.0.0.1 local 127.0.0.1 dev lo proto kernel scope host src 127.0.0.1 broadcast 127.255.255.255 dev lo proto kernel scope link src 127.0.0.1 I can send traffic to this ENI directly from a host that can have the same IP as the host the ENI is attached to. This is where the problem starts. I ran tcpdump on the port in question and saw multiple SYNs going to the ENI with src '10.1.3.12' and destination '10.1.1.190' but didn't see even a single ACK. In my understanding if ACKs were being sent from the ENI they'd have destination as 10.1.3.12 i.e. the same as the local machine's IP and such packets will now be routed as local packets matching local routing policy: local 10.1.3.12 dev eth0 proto kernel scope host src 10.1.3.12 I'd like to send all the packets originating from 10.1.1.190 (my ENI) to go back on the same interface i.e. eth3 in this case. Contents of the nee table 10003 are: $ sudo ip route show table 10003 default via 10.1.1.1 dev eth3 I think I can do the following: I don't know if its possible but probably decrease the priority of local table so the packets match the table 10003. Use iptables to mangle these packets and update the local table route to include the mark information But I'm not sure if these are the right approaches.

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• Configuring EC2 Instance

  - by Philip Isaacs

  Forgive me if this seems like a dumb question, but I'm wondering how do I increase the processing power (cpu, memory) of an instance I already have running. Right now I have a web server running on a m1.small type instance and it's performing poorly at peak times, is it possible to increase the amount of memory on the instance somehow, or do I need to create a new EC2 install. What are my options. Please advise.

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• What exactly is an invalid HTTP_HOST header

  - by rolling stone

  I've implemented Django's relatively new allowed hosts setting, which is meant to prevent attackers from submitting requests with a fake HTTP Host header. Since adding that setting, I now get anywhere from 20-100 emails a day notifying me of invalid HTTP_HOST headers. I've copied in an example of a typical error message below. I'm hosting my site on EC2, and am relatively new to setting up/maintaining a server, so my question is what exactly is happening here, and what is the best way to manage these invalid and I assume malicious requests? [Django] ERROR: Invalid HTTP_HOST header: 'www.launchastartup.com'.You may need to add u'www.launchastartup.com' to ALLOWED_HOSTS.

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• bottle.py on EC2 micro instance causes 2 order of magnitude slowdown

  - by user61633

  Cross-posted from StackOverflow: I wrote a little toy script to solve this type of game, and put it on my new micro EC2 instance. It works perfectly, but while it takes around 0.5 seconds to run a local version, and takes under 0.5 seconds to run both the local and the bottle.py version on my home computer, running the bottle.py version on the EC2 instance takes over 2 minutes. Python has the cpu pegged at 99% the entire time. Only 7.4% memory usage, consistently, and no swapping. The only guess I have is initialization time for bottle.py on EC2, but if it were that, why would it be ~200x faster on my own computer with bottle.py?

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• Subsequent runs of rsync locally don't reduce data transferred

  - by sharakan

  I have an EC2 instance with data I want to sync to a mounted, but remote, volume, as a backup. rsync seems like the way to go with this, so as a test I took my test file (a Postgres pg_dump file) and used rsync -v to copy it to the mounted volume: [ec2-user work]$ rsync -v dump.sql.1 ../backup/dump.sql dump.sql.1 sent 821704315 bytes received 31 bytes 3416650.09 bytes/sec total size is 821603948 speedup is 1.00 Then, I ran it again, expecting to see minimal sent/received numbers because it would just be checksums. Instead... [ec2-user work]$ rsync -v dump.sql.1 ../backup/dump.sql dump.sql.1 sent 821704315 bytes received 31 bytes 3402502.47 bytes/sec total size is 821603948 speedup is 1.00 I'm new to rsync so perhaps I'm missing something, but isn't the idea that the source and destination files are checked for differences, and then a patch is generated and applied to the destination? Why is this not reducing the amount of data 'sent' to just the size of the checksums? Some background if it's relevant: the mounted volume is using s3fs, mounted with s3fs <bucketname> backup.

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• An international mobile app - Should I set up EC2 instances in multiple regions?

  - by ashiina

  I am currently trying to launch an mobile app for users around the world. It is not a spectacular launch which will get millions of users in weeks - just another individual developer releasing an app. I know enough about the techniques of managing timezones, internationalizing string, and what not ( the application layer ). But I cannot find any information on how I should manage my EC2 instances... Should I be setting up EC2 instances in different regions around the world? Is that a must-do, or is it an overkill? I'm aware that it's the ideal solution in terms of performance, but it becomes very tough managing servers in multiple regions. DB issues, AMI management, etc... I'd much rather NOT do so. So I would like to know the general best practice when launching an international app/website. Note: For static contents, I know it's better to use a CDN, so I'm planning on doing so.

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• Monitoring Between EC2 Regions

  - by ABrown

  I'm working on a small EC2 project that involves a handful of servers in two different regions (US East and EU West). My first task is to implement a Nagios monitoring solution. Monitoring within a region is simple - I just use the private domain names/IPs, but I'm a little unsure of the best way to handle monitoring the second region without setting up a second Nagios install. The environment is fairly static, so I'm not going to be scripting the configuration with the EC2 tools just yet. As I see it, I have two options. Two Nagios installations (which is over-kill for the small number of servers I'm dealing with). Pros: I don't have to alter the group permissions nor do I have to pay for the traffic, redundancy in the monitoring solution - I could monitor the Nagios servers. Cons: two installations to deal with and I'd need to run another server instance. Have the single installation monitor both regions. Pros: one installation to deal with. Cons: slightly reduced security - security group will have to have NRPE (5666) opened for one source IP and also paying for a small amount of bandwidth at the Internet rate for data transfer between the regions. I guess my question is - how have others handled this problem and what are your recommendations? Thanks!

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• Can I re-attach a (ZFS) EBS volume when starting a new EC2 instance?

  - by Phillip Oldham

  I'd like to use an OpenSolaris EC2 instance as a DB server, using an external EBS volume connected to a ZFS pool. If I set-up the ZFS pools then bundle-up the EC2 image, could I terminate the instance then safely re-attach the existing EBS volume (with data) to a new EC2 instance after it boots?

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• Amazon how does their remarkable search work?

  - by JonH

  We are working on a fairly large CRM system /knowledge management system in asp.net. The db is SQL server and is growing in size based on all the various relationships. Upper management keeps asking us to implement search much like amazon does. Right from there search you can specify to search certain objects like outdoor equipment, clothing, etc. and you can even select all. I keep mentioning to upper management that we need to define the various fields to search on. Their response is all fields...they probably look at the search and assume that it is so simple. I'm the guy who has to say hold on guys we are talking about amazon here. My question is how can amazon run a search on an "all" category. Also one of the things management here likes is the dynamic filters. For instance, searching robot brings up filters specific to a robot toy. How can I put management in check and at least come up with search functionality that works like amazon. We are using asp.net, SQL server 2008 and jquery.

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• Recommended Method to Watch Amazon Prime using Ubuntu 14.04 LTS

  - by Kurt Sanger

  I realize that Hal is no longer in the Ubuntu Software Center for Ubuntu 14.04 and it is only available from a third party at this time. But I would like to know what Ubuntu's plans are for integrating DRM into Linux? Especially with Amazon's integration into the search tool, one would hope that they would make it easier for their Amazon Prime customers to watch Instant Videos. Is the repository for getting Hal for 13.10 safe for use? What will that break if I install it onto 14.04? Or do we need to find another OS that has DRM built into it? If Hal is okay to add to the OS using a third party repo, then why doesn't Ubuntu Software Center support it too? I imagine that Amazon's contract with the video copyright holders requires that they have some protection on electronically distributed media. I also imagine that getting Amazon to change is much harder than getting a bunch of software engineers to fix Ubuntu. Unless they don't want too. At which point Ubuntu isn't really a complete OS. Very disappointing. In general the ease of use of Ubuntu, the software center, and the large variety of applications was alluring. But breaking DRM wasn't a great idea. Can't wait to see what fails in our next update. Please tell us that there is a plan that is going to work in our future.

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• Is it possible to use AWS as a web host?

  - by Matrym

  Is it possible to load / host an entire website using AWS? Or is it only a service that can load specific pieces of a website - such as images, etc. Obviously, I'd want to use my own domain. If you can use it, are there any limitations? Here's the AWS link, for context: http://aws.amazon.com/s3/

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• You Can't Win on Price

  - by David Dorf

  This year I did the majority of my Christmas shopping from the comfort of my home office. There aren't many things in stores you can't find online these days. I find it easier to search, research, and compare products online rather than walking the mall anyway. But there's a segment of the population that likes to be in the store, touching the products. For those people, smartphones avail them some of the e-commerce features I mentioned right there in the aisles. First it was RedLaser, then TheFind, ShopSavvy and many others. But the one that should be scaring retailers is Amazon's PriceCheck application. It lets you scan the product barcode, take a picture of the product, or speak the product's name. Once the product is identified, it shows the online prices, with Amazon at the top of the list. Within 10 seconds you can order the item and Amazon Prime members get free 2-day shipping too. I don't think fashion and grocery retailers need to worry much, but I have to believe smartphones are helping Amazon win a little more of the brand-name hardgoods market. So what's a retailer to do? Best Buy has begun to put QR Codes on their shelf labels that are easily scanned by smartphones and take the consumer to a Best Buy Web page where they can get extended information about the product. The consumer is getting the additional information they want, and Best Buy avoids the price comparisons. Of course if a consumer chooses to use the Amazon PriceCheck app, then all bets are off. That's when Best Buy has to hope the in-store experience and customer service will save the sale. My point is that the internet makes information available to everyone, and smartphones make it available anywhere. Unless you want your store to be Amazon's local showroom, you need to be price-competitive but differentiate on other aspects of the shopping experience. With the cost of running a physical store, you can't win on price.

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• How To Disable the Amazon Search Ads in Ubuntu’s Unity Dash

  - by Chris Hoffman

  Upgrade to Ubuntu 12.10 (Quantal Quetzal) and you’ll run into a surprise – Ubuntu now shows you advertisements for Amazon products when you search in your dash. There’s also an Amazon shortcut pinned to Unity’s launcher. There are several ways to disable these ads, and they aren’t immediately obvious. However, you can easily disable the Amazon search results if you don’t want to see them, or if you’re concerned about the privacy implications. What To Do If You Get a Virus on Your Computer Why Enabling “Do Not Track” Doesn’t Stop You From Being Tracked HTG Explains: What is the Windows Page File and Should You Disable It?

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• Why does Amazon release private keys instead of public keys?

  - by S37H

  My brain is wrapped around the axle on public and private keys. When you create a cloud server (instance) on Amazon's EC2 service and then want to connect to it via SSH, Amazon requires you to download private a key to make the connection. Doesn't the idea behind public/private key suggest that Amazon should be require you to download a public one? Further, if I set up an SFTP server for a customer to use, should I be installing their key on the server or giving them a key from the server? In either case, should it be a public or private key?

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• Why am I having DNS problems going through Network Solutions DNS to Amazon AWS?

  - by BestPractices

  Network Solutions appears to have an issue with AWS hostnames. This AWS ELB has been out there for months and is resolvable from every major DNS provider but network solutions. Any idea as to why? WORKING (4.2.2.2 DNS) $ nslookup testloadbalancer-1761726467.us-west-2.elb.amazonaws.com Server: 4.2.2.5 Address: 4.2.2.5#53 Non-authoritative answer: Name: testloadbalancer-1761726467.us-west-2.elb.amazonaws.com Address: 50.112.251.201 NOT WORKING (Network Solutions DNS) $ nslookup testloadbalancer-1761726467.us-west-2.elb.amazonaws.com ns1.worldnic.com Server: ns1.worldnic.com Address: 205.178.190.1#53 ** server can't find testloadbalancer-1761726467.us-west-2.elb.amazonaws.com.localhost: SERVFAIL

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• Should I have a heroku worker dyno for poll a AWS SQS?

  - by Luccas

  Im confusing about where should I have a script polling an Aws Sqs inside a Rails application. If I use a thread inside the web app probably it will use cpu cycles to listen this queue forever and then affecting performance. And if I reserve a single heroku worker dyno it costs $34.50 per month. It makes sense to pay this price for it for a single queue poll? Or it's not the case to use a worker for it? The script code: queue = AWS::SQS::Queue.new(SQSADDR['my_queue']) queue.poll(:idle_timeout => 20) do |msg| # code here end I need help!! Thanks

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• La galerie Android d'Amazon génère trois fois plus de revenus que Google Play, selon Flurry

  La galerie Android d'Amazon génère trois fois plus de revenus que Google Play selon Flurry Google tirerait moins de profit de la vente d'applications pour son écosystème Android que ces concurrents. D'après une récente étude réalisée par le cabinet d'analyse d'applications mobiles Flurry, sur la capacité pour les développeurs de générer des revenus à travers les galeries d'applications majeures, il en ressort qu'Amazon génère plus de revenus avec sa galerie Android que Google. En fixant à 100 % les revenus générés par l'App Store d'Apple qui est utilisé comme référence, puis en les comparants avec ceux générés par l'Appstore Amazon et Google Play, Flurry a constaté que pou...

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• Link tracking: Amazon or Google way

  - by Howard

  When doing a shopping site, the best way is to reference some successful stores, like Amazon. In the area of link tracking, for example, to see which section of your frontpage yield better conversion: Amazon way: Generate an unique URL for each link in the frontpage, such as http://www.amazon.com/gp/product/B0083Q04IQ/ref=s9_pop_gw_g424_ir04/175-6575053-9292830?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=center-2&pf_rd_r=0AMJCKBBQA63EP0XHB86&pf_rd_t=101&pf_rd_p=1263340922&pf_rd_i=507846 Google way Use Google Analytics <a href="/products/abc" onClick="javascript: pageTracker._trackPageview('/from-main-menu/products/abc');"> WHat are the pros and cons with the above two approaches (besides Google require JS support)?

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• Amazon Kindle e-Ink based device programming: Java ME CDC old school

  - by hinkmond

  If you like doing Amazon Kindle development in the old-school way (Java ME CDC-based apps) on their e-Ink based readers, then here's how to download and use the Amazon Kindle Development Kit (KDK). See: Download Amazon KDK Here's a quote: We're excited to introduce the all- new Kindle family: Kindle, Kindle Touch, and [blah-blah]. The KDK has APIs, tools, and documentation to help you create active content for Kindle, Kindle Touch, and other E Ink Kindles. Kickin' old school with Java ME CDC technology is the way to go. You can come up with the next Word with Friends this way. Hinkmond

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• Amazon travaillerait sur une version inédite des tablettes Kindle, à double affichage LCD / encre électronique

  Amazon travaillerait sur une version inédite des tablettes Kindle À double affichage LCD / encre électronique Un nouveau dépôt de brevet signé Amazon et dévoilé ce jeudi décrit un dispositif incorporant un double affichage inédit. On y retrouve un écran LCD (ou OLED) d'un côté et un écran statique E-INK (encre électronique ou papier électronique) de l'autre. [IMG]http://idelways.developpez.com/news/images/kindle-lcd-e-ink.jpg[/IMG] Une idée prometteuse que celle d'Amazon en pensant à créer une tablette tactile à double écran Kindle ? Kindle Fire. L'écran Kindle doté d'un affichage à faible éclairage offre un outil eReader avec un plus grand confort de le...

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• HTTP Redirect from www.mydomain.com to my amazon ec2 account (instance)?

  - by fabius

  Hello! I have a domain, that is registered at a service provider but my site (wordpress blog) is hosted in a shared account with a friend in another other host service. I want to become seperate from this friend because I'm tired of boring him with my blog downtimes. Now, my problem is that I signed up to Amazon EC2 service and I created a instance (a virtual machine) to host my wordpress blog and now I'd like to redirect mydomain.com to this instance at Amazon EC2 and I don't know how to proceed in order to achieve that. The instance at Amazon EC2 is up and running (it's a 64bit linux machine) but I couldn't redirect mydomain.com to this instance at my host service webpanel. Could someone help me please???

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