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How to create and configure EC2 instances for Rails hosting with CentOS using Ansible

Introduction In this quite extensive post I will walk you through the process of creating from scratch a box in EC2 ready to use for deploying your Rails app using Ansible. In the process I will show how to write a simple module that, while not necessary, will illustrate some points as well. Keep in […]

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Check_MK, software updates and mount options alarms

We have been using nagios (more specifically Check_MK) recently at work to get some monitoring information on our CentOS instances. Recently we decided to reprovision all of our EC2 instances to apply several security upgrades. Among the packages upgraded, there was the kernel (which I guess was the cause of our subsequent problems). After updating […]

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