cloud

问题 I am running an EC2 Linux instance. For some maintenance purposes I shutdown the instance and started it again. However, EC2 IP has changed now. How to keep an IP address of Amazon EC2 instance unchanged after stop and start it again? 回答1: Actually, When you stop/start your instance, the IP address will change. If you reboot the instance, it will keep the same IP addresses. Unfortunately, it is not possible for us to reassign the address to your instance as that address would have been

问题 I am running an EC2 Linux instance. For some maintenance purposes I shutdown the instance and started it again. However, EC2 IP has changed now. How to keep an IP address of Amazon EC2 instance unchanged after stop and start it again? 回答1: Actually, When you stop/start your instance, the IP address will change. If you reboot the instance, it will keep the same IP addresses. Unfortunately, it is not possible for us to reassign the address to your instance as that address would have been

问题 I am new to AWS , want to develop a cloud ready java application REST API . The application will hit the MySQL database and produce output as JSON after querying the database. IP:port/application?q=<query> response is JSON. How to achieve it ? the data in MySQL is mostly static 100MB data but used very frequently. 回答1: It is very straight forward. if you already have same application running in your local system , then you can just move it to AWS , using below steps :- spin up new ec2

问题 Has anyone ever launched cloud-based apps / websites that use a local SQLite DB as the primary data source? Are there any warnings about this? My environment: C# 3.0 app currently uses a sql server 2008 db current db size 30 mb- 回答1: If you expect a lot of traffic, you really shouldn't. SQLite is meant to be used as a lightweight SQL database, and is not meant for highly concurrent access (since it locks the whole database file) which could be an important requirement in this case. Read:

问题 We have 3 public facing web applications which we are migrating to Azure. All sites use port 80. OPTIONS As far as I understand, there are three different options when using Web Roles: 1. All 3 sites hosted in ONE web role in a single cloud service : HTTP access can be configured by hostHeader in ServiceDefinition.csdef This is the cheapest Requires that all projects need to be published at the same time The sites cannot be scaled separately, only as a whole 1 Cloud Service project in Visual

问题 Here is a sample of GAE Console log record: http://i.stack.imgur.com/M2iJX.png for readable high res version. I would like to provide a breakdown of the fileds, displayed both in the collpased (summary) view and the expended (detail) view. I will fill the fields I know their meaning and would appreciate assistannce with dichipering the rest. This post will be updated once new information is available. Thank you, Maxim. Open issues: How to read timestamp? [...-prod/0-0-39. 346862139187007139 ]

问题 Is there any way to update files stored on Amazon CloudFront (Amazon's CDN service)? Seems like it won't take any update of a file we make (e.g. removing the file and storing the new one with the same file name as before). Do I have to explicitly trigger an update process to remove the files from the edge servers to get the new file contents published? Thanks for your help 回答1: Amazon added an Invalidation Feature. This is API Reference. Sample Request from the API Reference: POST /2010-08-01

问题 I've started learning about Microsoft Azure last year and one of the services provided was the Cloud Services. The way I understand Cloud Services is that it is a service meant to allow one to build N-tier apps. So it is possible to set, for instance, a Web Role hosting one ASP.NET Web API project and some Worker Roles for background processing and so on. There was also the Web Sites service. Now at Build 2015 it was presented Azure App Services which basically is made of Web Apps API Apps

问题 I have two projects in my developer console. I have taken a "Snapshot" of one of the VMs in project-1. I want to create a new VM in project-2 using the snapshot created in project-1. Right now snapshot is not showing in the option. How can I import snapshot from one project to another? 回答1: You can create an image from the snap in Project 1, then create an instance from that image using Project 2. I'm assuming you have edit rights in both projects. Your question says you have a snapshot and

问题 Does amazon s3 support batch uploads? I have a job that needs to upload each night ~100K of files that can be up to 1G but is strongly skewed towards small files (90% are less than 100 bytes and 99% are less than 1000 bytes long). Does the s3 API support uploading multiple objects in a single HTTP call? All the objects must be available in S3 as individual objects. I cannot host them anywhere else (FTP, etc) or in another format (Database, EC2 local drive, etc). That is an external