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Historically, the Cloud Foundry APIs have been backed by a relational SQL database. This provided atomicity and strong consistency for each request and many of the CF APIs and clients now rely on those guarantees. With Korifi we no longer have that luxury. Korifi’s CF APIs maintain state through Kubernetes custom resources (CRDs) that are backed by an eventually consistent etcd key-value store. That means that when interacting with the Kubernetes API you are not guaranteed to be able to read data back immediately after writing it – but you will be able to eventually. As you might imagine, this behavior can cause trouble if it is not accounted for. In this lightning talk, Tim Downey will discuss some of the problems with eventual consistency we have encountered while reimplementing the CF APIs in Korifi and how we have worked around them.
Tim Downey is a Technical Lead at VMware and has been a core contributor to Cloud Foundry ecosystem since 2016. He is currently working on bringing the Cloud Foundry experience to Kubernetes as part of the Korifi project. Tim has a broad range of experience with CF, having previously... Read More →
The App Autoscaler project in the App Runtime Interfaces WG has been hard at work!
Find out about new features for users of the App Autoscaler and operators of CF foundations deploying the app-autoscaler-release.
Learn how you can securely submit custom metrics to the app-autoscaler via mTLS.
See how the support of the new "Shared-Nothing Logging and Metrics Architecture" in the App Autoscaler made it possible to simplify its code and reduce TCO.
Have a peek into the future of App Autoscaler and see how new possibilities opened up by the CF v3 API, now supported in App Autoscaler, could be leveraged.
Silvestre Zabala is a senior developer at SAP SE working on the Business Technology Platform. Silvestre is currently the Application Autoscaler's product owner at SAP and the Cloud Foundry Foundations's project.
Arsalan is a developer at SAP. He is currently working and contributing in CF Application Autoscaler Team in App Runtime Interfaces working group. Previously, Arsalan had also worked as a Cloud Foundry Application Developer.
Remote debugging can provide insight into the behaviour and interactions of complex applications running in remote machines/containers. This practice is supported for .NET Core applications via the Visual Studio Debugger (vsdbg), which the Paketo Buildpack for .NET Core can now optionally include in your application image via an environment variable passed at build time. The debugger can attach to a running .NET Core process and be bound to a client-side debugger via STDIN across a connection invoked via a transport program (e.g. ssh, docker exec or kubectl exec). Using Paketo Buildpacks with Omnisharp's C# extension for Visual Studio Code, .NET Core users can take advantage of a powerful workflow for accelerating iterative development.
It's a new year jam-packed with new stemcells! Learn about the new stemcell Jammy Jellyfish and the journey of how it was created. Find out about the new features that come with Jammy and the challenges that come with a new operating system. Learn how to update your BOSH releases to support Jammy.
Long Nguyen is a core BOSH contributor. He's been an active user of BOSH and Cloud Foundry since 2013. He's contributed to many open source bosh releases. He has deployed and maintained some of the largest deployments of Cloud Foundry, breaking and fixing components of the ecosystem... Read More →
The infrastructure costs associated with running CF have traditional been a significant burden for operators and experimenters alike. David takes us through the process of modernizing CF and BOSH to use next-generation infrastructure, including some exciting drama discovered along the way. Finally he'll highlight how your CF deployment can be saving significant money by leveraging the next generation of Hyperscaler VM types.
David has been at Pivotal/VMWare since 2008 and has held many roles involving Cloud Foundry since early 2013. He's serves as a CF Technical Oversight Council member and was involved in the governance overhaul of 2021. Most recently he's the Senior Tech Lead for Tanzu Application... Read More →
The CF community is no stranger to complicated diagrams, but it's rare that they get as complex as the current logging and metrics architecture: multiple versions of Loggregator are deployed in tandem, agents are mostly involved but not ubiquitous, an instance group exists purely to buffer logs. Carson Long presents the new, old vision for logging and metrics in Cloud Foundry: Shared-Nothing.
Carson Long is a software engineer at VMware. He spends most of his time improving and maintaining Cloud Foundry's logging and metrics infrastructure, and is very excited to share updates about that space!
