All posts tagged: EC2

Partitioning and resizing the EBS Root Volume of an AWS EC2 Instance

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One of the few things I do not like about the AWS EC2 service is that all available images (AMIs) used to to launch new instances require a root volume of at least 8 or 10 GB in size and all of them also have a single partition where the root filesystem is mounted on.

In my post The importance of properly partitioning a disk in Linux I discussed why in my opinion this approach is not appropriate and now I will address in a practical way how to divide those volumes into multiple partitions keeping the 8-10 GB base size or making them even smaller to save costs in case you want to deploy smaller servers that do not need as much storage space.

DanielPartitioning and resizing the EBS Root Volume of an AWS EC2 Instance

How to create a Sentilo AWS EC2 instance from an OVA file

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Sentilo is an open source software designed by openTrends for the exchange and processing of information from thousands of sensors and actuators, acting as an interface between them and the various applications that want to collect and make use of the information they provide. Thus, it fits well within the Smart City architecture and has the city of Barcelona as the main promoter. But Sentilo is not only made by and for the cities, but also for any organization that wants to implement an IoT application that requires deploying a smaller number of sensors and actuators, such as inside buildings or in the open field.

In this article I will detail how to deploy a Sentilo 1.6 server in a Cloud Computing environment such as Amazon Web Services by creating an EC2 instance from an AMI that will be created by importing an image in Open Virtual Appliance (OVA) format which can be downloaded from Sentilo’s website at http://www.sentilo.io/xwiki/bin/view/Sentilo.Community.Documentation/Use+a+Virtual+Machine.

DanielHow to create a Sentilo AWS EC2 instance from an OVA file

How to enlarge the size of an EBS volume in AWS and extend an ext4 partition

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Logo AWS EBSWhen we completely fill up an ext4 filesystem mounted on a partition hosted in an EBS volume of Amazon Web Services and we can not do anything to free space because we do not want to lose any of the stored data, the only solution is to grow up the volume and extend the associated partition up to 100% of its capacity to obtain free space again.

DanielHow to enlarge the size of an EBS volume in AWS and extend an ext4 partition