Kubernetes at CERN: Use Cases, Integration and Challenges
Table of Contents

Kubernetes at CERN: Use Cases, Integration and Challenges.
Source: speakerdeck.com

Kubernetes at CERN: Use Cases, Integration and Challenges.
Source: speakerdeck.com
In this post I will show you how to use Roles published to Ansible Galaxy as an Operator to manage an application in Kubernetes. Reusing a Role in this way provides an example of how to create an Operator that simply installs an application with the flexibility to expand and customize the behavior organically as requirements dictate. I will leverage both the Ansible Operator and the k8s module to demonstrate how you can use Ansible to create Kubernetes native applications.
Read MoreWe’ve discussed many interesting use cases for SNI support within the edge proxy/gateway with both open source and commercially supported users of Ambassador. In a nutshell (and with thanks to Wikipedia), SNI is an extension to the TLS protocol which allows a client to indicate which hostname it is attempting to connect to at the start of the TCP handshaking process. This allows the server to present multiple certificates on the same IP address and TCP port number, which in turn enables the serving of multiple secure websites or API services without requiring all those sites to use the same certificate.
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In this blog post, we briefly describe the novel Firmament flow network graph based scheduling approach (OSDI paper) in Kubernetes. We specifically describe the Firmament Scheduler and how it integrates with the Kubernetes cluster manager using Poseidon as the integration glue. We have seen extremely impressive scheduling throughput performance benchmarking numbers with this novel scheduling approach.
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