Category: Cloud

How To set limit on systemd services

This is a cookbook style on how to set a limit (ulimit style) on your custom services that is managed by systemd. Usecase Why would you want to do something like this? You might be running on a small server (or instance if you are using cloud services) and want to prevent your application from…

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Site instabilities due to Meltdown and Spectre (indirectly)

You may have notice that this blog is mostly unavailable or showing 5xx lately. It’s because I am on AWS and the recent Intel vulns has all the cloud vendors patching and rebooting their hypervisors. It’s causing various issues with my infrastructure. I don’t blame the vendors, they are doing what they are supposed to…

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Moving or copying files from one Google drive account to another

I have seen questions on the web about how to migrate (copy/move) files from one GDrive account to another. There are many reasons, such as migrating from one Google account (such as company) to your personal account, etc. WARNING: you may be violating your company policy by moving/copying files from your company Google account to…

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Summary of Overcoming RoR Performance Challenges Meetup on Wed 2/29/12

Overcoming RoR Performance Challenges Meetup The talk was on best practices and some tips on looking for problems and how the panelists worked around them. There are no “magic” bullet like Ruby or RoR has 🙂 Essentials: Watch out when using ActiveRecord. It make it too easy to use DB. It make it too easy…

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Migrating from Bamboo to Cedar (calendon stack) on Heroku

We just migrated from Bamboo (bamboo-ree-1.8.7) to Cedar (calendon rails 3.1 stack) on Heroku. Here are the steps I took to make it work. Note that I didn’t do the code migration, my dev handle that, I do the server and infrastructure part. Basically this mean moving from Rails 2.x (and ruby 1.8.7) to Rails…

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EC2, AMI, baking, cooking, automation

I’ve been playing around with Amazon EC2 for over a year now.  In the beginning, it was just for my own education, amusement and experimentation.  Now, WORK, is a heavy user of EC2/SDB so I have to understand it and support it. I’ve a modified script that generate my own AMI.  Let me clean that…

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