Generating Kubernetes ValidatingAdmissionPolicies from Kyverno Policies
Monday, February 26, 2024 in General
In the previous blog post, we discussed writing Common Expression Language (CEL) expressions in Kyverno policies for resource validation. CEL was first introduced to Kubernetes for the Validation rules for CustomResourceDefinitions, and then it was …
Assigning Node Metadata to Pods
Monday, February 19, 2024 in General
If you’re running Kubernetes in production, especially in a public cloud, where a single cluster may span multiple availability zones, chances are you’re configuring workloads with some awareness of your topology. Kubernetes has a few …
Kyverno Chainsaw 0.1.4 - Awesome new features!
Thursday, February 15, 2024 in General
The latest release of Kyverno Chainsaw came out yesterday. Let’s look at the new features included in this release. Resource diff in assertion failures Resource templating support Resource diff in assertion failures This is a relatively …
Securing Services Meshes Easier with Kyverno
Sunday, February 04, 2024 in General
Service meshes are all too common these days in Kubernetes with some platforms even building them into clusters by default. Service meshes are no doubt useful in a variety of ways which are well known, but it’s also well known they dramatically …
Kyverno Chainsaw - Exploring the Power of Assertion Trees!
Wednesday, December 13, 2023 in General
While the Chainsaw documentation is nice and comprehensive, I feel like the most powerful feature of Chainsaw deserves its own blog post for a couple of reasons: Its hard to make it standout in the documentation You can’t appreciate Chainsaw …
Kyverno Chainsaw - The ultimate end to end testing tool!
Tuesday, December 12, 2023 in General
Creating Kubernetes operators is hard, testing Kubernetes operators is also hard. Of course creating, maintaining and testing a Kubernetes operator is even harder. It often requires writing and maintaining additional code to get proper end to end …
Kyverno Completes Third-Party Security Audit
Tuesday, November 28, 2023 in General
The Kyverno project is pleased to announce the completion of its third-party security audit. The audit was conducted by Ada Logics in collaboration with the Kyverno maintainers, the Open Source Technology Improvement Fund and was funded by the Cloud …
Using CEL Expressions in Kyverno Policies
Monday, November 13, 2023 in General
Kyverno, in simple terms, is a policy engine for Kubernetes that can be used to describe policies and validate resource requests against those policies. It allows us to create policies for our Kubernetes cluster on different levels. It enables us to …
Applying Validating Admission Policies using Kyverno CLI
Wednesday, October 04, 2023 in General
The Kyverno Command Line Interface (CLI) allows applying policies outside of Kubernetes clusters and can validate and test policy behavior prior to adding them to a cluster. The two commands used for testing are apply and test: The apply command is …
Kyverno Completes Fuzzing Security Audit
Wednesday, September 06, 2023 in General
Kyverno, a CNCF policy engine for Kubernetes, is happy to announce the completion of its fuzzing security audit. The audit was carried out by Ada Logics and is part of an initiative by the CNCF to bring fuzzing to the CNCF landscape; Fuzzing is an …
Verifying images in a private Amazon ECR with Kyverno and IAM Roles for Service Accounts (IRSA)
Friday, August 18, 2023 in General
When running workloads in Amazon Elastic Kubernetes Service (EKS), it is essential to ensure supply chain security by verifying container image signatures and other metadata. To achieve this, you can configure Kyverno, a CNCF policy engine designed …
Simplifying OpenShift MachineSet Management Using Kyverno
Friday, July 28, 2023 in General
(Guest post from Red Hat Distinguished Architect, Andrew Block) Managing infrastructure in a declarative fashion is one of the core principles that should be adopted when operating in any environment. In OpenShift, this paradigm for managing the …
Using Kyverno with Pod Security Admission
Monday, June 12, 2023 in General
Pod Security Admission (PSA) is the built-in successor to Kubernetes PodSecurityPolicy (PSP) and is enabled by default starting in v1.23, graduating to stable in v1.25, the same version where PSP was finally removed. PSA is different from PSP in many …
Let's Play Kyverno
Sunday, June 04, 2023 in General
Foreword “Kyverno is a policy engine designed specifically for Kubernetes." While this approach makes it very easy to use Kyverno in its intended environment, it is sometimes difficult to explain and present the capabilities when that …
PodSecurityPolicy migration with Kyverno
Wednesday, May 24, 2023 in General
As you’ve probably heard, PodSecurityPolicy (PSP) in Kubernetes is no more. After a deprecation beginning in v1.21, they were finally removed in v1.25. Many organizations out there are still relying on PSPs and, if you’re reading this …
New time related JMESPath filters in Kyverno!
Sunday, February 19, 2023 in General
The v1.9 release of Kyverno added several time related JMESPath filters. With this addition, users now can add time based rules in their Kyverno policies. This blog post aims to describe those new additions. What is “JMESPath”? JMESPath …
Kyverno and SLSA 3
Wednesday, February 01, 2023 in General
With the release of Kyverno 1.9, Kyverno has begun generating and attesting to the provenance of its release artifacts in the SLSA standard and provisionally meet Level 3. This blog post attempts to explain a bit about SLSA and Level 3 and how we …
Kyverno CVE-2022-47633 affecting image verification
Thursday, December 29, 2022 in General
Summary Kyverno versions 1.8.3 and 1.8.4 contained a regression (CVE-2022-47633) which allowed a malicious proxy to facilitate a man-in-the-middle (MiTM) attack allowing an unsigned image to run in a Kubernetes cluster even if there was a Kyverno …
New Kyverno Blog
Friday, July 08, 2022 in General
Welcome to the new Kyverno blog! As you can see, we now have a brand new and shiny blog page thanks to the folks behind the Docsy theme which the Kyverno website uses (in addition to others in the cloud native ecosystem). Subscribe to the handy RSS …