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My thoughts on RedHat's EX403 exam

March 20, 2017 by Paweł Biernacki

I’ve recently gained the Certificate of Expertise in Enterprise Deployment and Systems Management after passing EX403 . I took the exam in the City of London as an individual session - this time on KOALA - Kiosk On A Laptop. On the RedHat’s site the exam is advertised to take three hours but after starting the exam I found that the clock shows four hours.

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Bug in KMS: encryption key that cannot be deleted

March 6, 2017 by Paulina Budzoń

Recently, I noticed a weird KMS key on an AWS account - what was weird about it, was the fact that it wasn’t marked as AWS-managed key, but no-one (not even root) could delete or modify the key!

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Creating Elasticsearch Domain did not stabilize - can't create AWS Elasticsearch 5.1 with CloudFormation

February 17, 2017 by Paulina Budzoń

Recently AWS announced support for Elasticsearch 5.1 in their Elasticsearch Service. Today, I tried to upgrade an existing CloudFormation stack, previously using Elasticsearch 2.3, to the new version and, after a very long wait, CloudFormation rolled back the stack with the following error: “Creating Elasticsearch Domain did not stabilize”. Here’s what I did to solve it.

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Sandboxing the hypervisor

February 15, 2017 by Paweł Biernacki

I’m pleased to announce that bhyve, the FreeBSD’s hypervisor, is now sandboxed using Capsicum framework.

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How to tag Redshift clusters (and others) in one place in AWS Console

February 3, 2017 by Paulina Budzoń

Management page of Redshift in AWS Console does not currently allow you to add or modify tags on your clusters. That doesn’t mean that Redshift resources cannot be tagged - almost everything from clusters to parameters groups can be tagged through the Tag Editor.

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