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Apple’s iCloud is a multi-cloud beast
Apple device users have probably taken and stored 100 billion photos: In early 2013, the number was 9 billion There are 100 million iPhones in active use in 2015. If each iPhone takes 1000 pictures per...
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Consul-template and Citrix Netscaler
Consul-template (consul-template) is a tool that can drive reconfiguration of applications and infrastructure in response to changes in the keys/values stored in Consul. Usually it is used to populate...
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A (round)trip with Java and Go
Can you generate Go code from a Java binary jar? This need arose from writing a prototype Ingress Controller for Kubernetes that uses a NetScaler to provide the Ingress function. Another need was a...
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Design patterns in orchestrators (part 1 of n) – idempotent operations
Orchestration is a somewhat overloaded term in the context of automation. Generally, it implies a central controller that tries to bring a complicated system to a desired state. There are usually a...
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Design patterns in Orchestrators (part 2 of N) – southbound APIs
This is part of a series on design patterns in building orchestration systems. The focus is on orchestrators found in clouds, data-centers, networking systems, etc, but the principles should be broadly...
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Design patterns in orchestrators: transfer of desired state (part 3/N)
Most datacenter automation tools operate on the basis of desired state. Desired state describes what should be the end state but not how to get there. To simplify a great deal, if the thing being...
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WORA! WORA! WORA !— the Kubernetes stealth attack
Tora!Tora!Tora! was the code word used to signify complete surprise had been achieved in the attack on Pearl Harbor. Photo Credit: Ebdon on Wikimedia WORA — Write Once, Run Anywhere was the term...
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The Half Life of Programming Knowledge
Programming is hard. I relearned this lesson recently. From time to time, I go on a decluttering spree at home, throwing / donating / recycling things I haven’t used in a while. Last week, the bottom...
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The Elephant in the Giraffe House
Photo by Julian Link on Unsplash The Elephant in the Giraffe House I listen to podcasts on my commute, and the a16z podcast never disappoints. On the episode “On Mentors and Mentees”, the guest Ken...
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7 good reasons to open source your code
Open source software — software that is free to the user and whose source code can be modified and distributed freely — is ubiquitous and offers solutions to a wide range of needs. Open source as a...
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