Category: cloud

  • Migrating a RDS MySQL 5.6 to RDS MySQL 5.7

    One of the best features of RDS is the ability to upgrade a MySQL instance – whatever it is a major or a minor version upgrade – with the click of a button. This option, assuming that the application is fully compatible to the new version, is very useful for not production deployments but gives…

  • Development and testing of mobile applications on AWS

    An upcoming presentation (in Italian) at weDev in Pavia. More information here and on the Ordine degli Ingegneri website.

  • Using WAF with ELB: CloudFront and request timeouts

    To minimize maintenance and increase device support for a web application I would like to have a AWS load balancer (either Classic Load Balancer or Application Load Balancer) supporting IPv6 and taking advantage of WAF as web application firewall. In short, I would like to leverage AWS services for the entire stack, firewall included. Let’s…

  • Classic Load Balancer and Application Load Balancer support for IPv6

    Going back a bit in time, in 2011 AWS announced support for  “Elastic Load Balancing – IPv6, Zone Apex Support, Additional Security”. As Jeff Barr wrote at that time: “All Elastic Load Balancers in the US East (Northern Virginia) and EU (Ireland) regions now have publicly routable IPv6 addresses in addition to their existing IPv4…

  • How to increase RDS storage automatically

    As for today, Amazon Aurora is the only RDS database that does not require to provision a fixed storage, it grows storage as needed, from 10GB up to 64TB. If you use the other MySQL-compatible databases, either RDS for MySQL or RDS for MariaDB, you have to provision the storage in advance. So you have…

  • Retrieving the account number using the AWS CLI

    What is your account id? I often need to query the list-tags-for-resource  using the AWS Command Line Interface (CLI) to retrieve all the tags related to a specific RDS instance. Looking at how to construct an RDS Amazon Resource Name (ARN) there is apparently no simple way to retrieve only snapshot with a specific tag…