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The fact that the timeout is five seconds long could be significant. Some applications (but notably not dig) use getaddrinfo() instead of gethostbyname(); the former, if called with certain arguments, will wait for both IPv4 and IPv6 responses, while the latter will return immediately an IPv4 reply is received. The default timeout for getaddrinfo() in this ...


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Turns out the underlying hardware clock was in a bad state, and kept overriding the NTP time sync (was pointed in the right direction by https://forums.aws.amazon.com/thread.jspa?messageID=519638). If anyone else is having this issue on EC2, you can contact Amazon to fix the underlying hardware.


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Good question, the Amazon EC2 documentation for CPU Credits in T2 Instances could be more precise here indeed - the introductory blog post New Low Cost EC2 Instances with Burstable Performance provides a better explanation, see the table in the middle: The column labeled "Baseline Performance" indicates the percentage of single core performance of the ...


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The 4 values you got from Route53 are name servers - they provide the location of where your records are stored (i.e. with Route53). In Route53, you need to have your actual A records. Previously, you (presumably) had one or more A records with GoDaddy which pointed to the elastic IP address of your EC2 instance, now, you need to recreate the same records in ...


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Next step - contact AWS support (open a ticket) and explain the issue - ask them to look at the logs of the ELB. They might claim there is nothing wrong, but if the issue is repeatable, you're in luck - you can demand live support during an occurrence.


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Since you were hosting both your domain and website with Godaddy, you probably didn't have to deal with the DNS, they did it automatically for you. Now that you have Route 53, you need to create a zone for your domain, create all the records such as A record and the MX records for your email to point to the elastic ip of your EC2 instance. In conclusion, ...


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Both domain name and hosting provider is same in your case,You need to go to the Godaddy account and then go to the DNS manager nad have to add A record for new hosting provider ip address that is AWS hosting and also change the DNS to point to AWS hosting provider. To change namerserver at Godaady: 1.Log in to your Account Manager. 2.Next to Domains, ...


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If you have only been creating snapshots at AMI creation time, you may be able to reliably do this with the CLI or powershell tools: Get all EC2 snapshots created by your AWS Account (OwnerID = your aws account) Get Snapshots associated with still running Volumes Of these snapshots, attempt to match their VolumeID with the VolumeID of still running ...


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The instance store volumes are deleted each time the instance is stopped. I am unsure what distribution datastax is running, but the correct way to do this is to create an init script that will: check to see if it is mounted if not, get the ephemeral0 drive information from the meta-data if not, format the volume and mount it If you don't want to craft ...


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When you try to access via ELB, do you get any access log or any kind of logging on your application ? If not, thats more likely a IP transition issue between ELB and EC2 instances. Could be application specific, like; do you need a real IP address of the client (like X-Forwarded-For header) ? Maybe, its because of the authentication logic that you use in ...


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Had a similar behavior today on my ec2 instance, and tracked down the thing to this: when I do sudo reboot now the machine hangs and I have to restart it manually from the aws management console when I do sudo reboot it reboots just fine. Apparently "now" is not a valid option for reboot as pointed out here ...


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Here's how I got it to work: http://aws.amazon.com/windows/server2012r2/faq/ says: Q: Can I create a Storage Space using an EBS volume? Yes. EBS volumes can be used to setup a Storage Pool. The volumes can be formatted as NTFS or ReFS depending upon your application*. *This is currently only supported on Windows Server 2012 and is not yet supported on ...


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Amazon Windows AMIs come with the "EC2Config" service installed. If we can make some assumptions about your environment (like... you're not also running some service called EC2Config locally), then you may be able to take advantage of this. If you can list the services available on your machine, you can search for the EC2Config service. Here's an example ...


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First, most third party SMTP gateway providers support using their service as a authenticated, encrypted relay host: sendgrid documentation Dyn documentation AWS SES documentation mailjet documentation mailgun documentation etc. etc. etc. The key is, you shouldn't have to do access control using IP addresses or hostname. You use encryption (TLS) and ...


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sendgrid uses password based authentication (config details for that below). It won't care about your IP, or the hostnames you use (myhostname, myorigin, etc). The hostname your server presents to sendgrid in the HELO (or EHLO) greeting is likely to appear in mail headers. Some recipients' spam software may check it, so use something that does exist in ...



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