datree
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datree | Kyverno | |
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34 | 35 | |
6,403 | 5,077 | |
0.1% | 3.4% | |
7.2 | 9.9 | |
6 months ago | 5 days ago | |
Go | Go | |
Apache License 2.0 | Apache License 2.0 |
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datree
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Show HN: Datree (YC W20) ā End-to-End Policy Management for Kubernetes
Hi HN, Iām Shimon, the co-founder of Datree: A policy management solution for Kubernetes. We help DevOps engineers prevent misconfigurations in their Kubernetes by enforcing an organizational policy on their clusters. Engineers can define a custom policy or use one of Datreeās built-in policies, such as NIST/NSA Hardening Guide, EKS Security Best Practices, CIS Benchmark, and more.
Our website is at https://datree.io and our GitHub is here: https://github.com/datreeio/datree
This is not the first time I have shown Datree to the HN community: A little over a year ago, I posted here an earlier version of Datree (https://news.ycombinator.com/item?id=28918850). At that time, Datree consisted of a CLI tool to detect Kubernetes misconfigurations during the development process (locally or in the CI/CD), unlike the version I present today in which the enforcement happens in production.
We built the CLI tool because we detected a big problem among Kubernetes operators: Misconfigurations. Kubernetes is extremely complex and flexible, which makes it very easy to poorly configure it in ways that are not secure. And indeed, we talked to dozens of Kubernetes operators who suffered from various problems, starting with failed audits, all the way to downtime in production, all because of misconfigurations.
Our solution was simple: Give the developers the means to shift-left security testing during the development process with a CLI tool that can be integrated into the CI/CD. We thought this was the best way to approach the problem: It is easiest to fix misconfigurations in the development process before they are deployed to production, it prevents context-switching and relieves resources from the DevOps team.
While the CLI tool was very popular among the open-source community (it got over 6000 stars on GitHub), we soon realized that CI/CD enforcement is not enough. As we talked with Datreeās users, we realized we had made a fundamental mistake: We thought of misconfiguration prevention in technical terms rather than organizational terms.
Indeed, from a technical point of view, it makes sense to shift-left Kubernetes security. But when considering the organizational structure in which it takes place, it simply isnāt enough. DevOps engineers told us that they love the shift-left concept, but they simply cannot rely on the goodwill of the engineers to run a CLI tool locally or to monitor all the pipelines leading to production. They need governance, something to help them stay in control of the state of their clusters.
Moreover, we realized that many companies who use Kubernetes are heavily regulated, and cannot take any chances with their security. Sure, these companies want the engineers to fix misconfigurations during development, but they also want something to make sure that no matter what, their clusters remain misconfiguration-free.
Based on this understanding, we developed a new version of Datree that sits on the cluster itself (rather than in the CI/CD) and protects the production environment by blocking misconfigured resources with an admission webhook. It has a centralized policy management solution to enable governance, and native monitoring to get real-time insights into the state of your Kubernetes.
I look forward to hearing your feedback and answering any questions you may have.
- Is OPA Gatekeeper the best solution for writing policies for k8s clusters?
- datreeio/datree: Prevent Kubernetes misconfigurations from reaching production (again š¤ )! Datree is a CLI tool to ensure K8s configs follow stability & security best practices as well as your organizationās policies. See our docs: https://hub.datree.io
- Question for the Argo-Verse
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How to create a react app with Go support using WebAssembly in under 60 seconds
Go is a statically typed, compiled programming language designed at Google, it is syntactically similar to C, but with memory safety, garbage collection, structural typing, and CSP-style concurrency. In my case, I needed to run Go for JSON schema validations, in other cases, you might want to perform a CPU-intensive task or use a CLI tool written in Go.
- Techworld with Nana: Enforce K8s Best Practices with Datree
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Gatekeeper vs Kyverno
I worked with both of them and from my experience Gatekeeper is more solid and accountable, I even wrote an article about Gatekeeper. Both Gatekeeper and Kyverno require a lot of heavy lifting work. On the one hand, Gatekeeper will probably require more configuration work however the community and the tool itself are more stable than Kyverno. On the other hand, Kyverno policy-as-code capabilities are much easier to use/understand. This way or another, for me using Kyvernoās policy language or Rego for my policies, wasnāt such a pleasant experience. I personally believe in GitOps and shifting left so if youāre looking for tools I would highly recommend you to review Datree, which is an open-source CLI (Disclaimer: Iām one of the developers at Datree). Datree is a more centralized policy management solution rather than a policy engine. Unlike Kyverno/Gatekeeper Datree was built to help DevOps teams to shift left and practice GitOps by delegating more responsibilities to the developers more efficiently. In practice, Datree already comes with built-in rules and policies along with YAML and schema validation for K8s resources and CRDs such as Argo CRDs. Datreeās policies are written in JSONScheme which is a common solid policy language supported by the community for many years. Additionally, Datreeās CLI also comes with a dashboard app where you can monitor the policies in your organization. You can modify and update your policies, review which policies are being used in practice, and control who can create/delete/update your policies. The major difference is that at the moment, unlike Kyverno/Gatekeeper Datree doesnāt provide native policy enforcement in the Kubernetes cluster at the moment but we expect to release this support very soon. At the moment, we provide a way to scan the cluster using a kubectl plugin. Feel free to check it out :)
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Working with Datreeās Helm Plugin
$ helm plugin install https://github.com/datreeio/helm-datree Installing helm-datree... https://github.com/datreeio/datree/releases/download/1.0.6/datree-cli_1.0.6_Darwin_x86_64.zip % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 673 100 673 0 0 1439 0 --:--:-- --:--:-- --:--:-- 1469 100 6901k 100 6901k 0 0 1852k 0 0:00:03 0:00:03 --:--:-- 2865k helm-datree is installed. See https://hub.datree.io for help getting started. Installed plugin: datree
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Adding custom rules in Datree
GitHub
- Learn from Nana, AWS Hero & CNCF Ambassador, how to enforce K8s best practices with Datree.
Kyverno
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Stop 'k rollout restart deploy' from restarting everything?
Anyway, I havenāt checked for sure as Iām away from laptop but it should be possible to use something like Kyverno to block that operation. We had to do similar in the past to hotfix a bug in our CLI tool. I wrote a blog post about it that might give you an idea: https://www.giantswarm.io/blog/restricting-cluster-admin-permissions
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An Overview of Kubernetes Security Projects at KubeCon Europe 2023
Cosign is used for signing containers through a variety of different methods. It has strong integration with other open source tools, such as Kyverno.
- Kyverno
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container signing and verification using cosign and kyverno
cosign: https://docs.sigstore.dev/cosign/overview/ kyverno: https://kyverno.io/
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Introduction to Day 2 Kubernetes
Kyverno - Kubernetes Native Policy Management
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Admission controller to mutate cpu requests?
You could use a policy tool like kyverno or OPA.
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Multi-tenancy with ProjectSveltos
Kyverno is present in the management cluster;
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Did I miss something here, regarding network policies and helm templates? (Slightly ranty)
You do still have to create a policy for every namespace, but don't have to worry about labeling individual pods. We're starting to move to Helm/kustomize for our namespaces to deploy default things like network policies to each one, and we're also starting to use kyverno more, which I think is a little more purpose built for this type of thing than metacontroller is.
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kubernetes provider resources v1 vs non-v1 is it just me or is this dumb?
I knew it was unsupported so about 6 months ago I had started an effort to switch to Kyverno, which is far better and actually supported. The version of Kyverno I was using had a v1beta1 AdmissionController. Fortunately that was in a helm chart so easily caught by pluto before my upgrade.
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Kyverno Policy As Code Using CDK8S
Kyverno Kyverno is a policy engine designed for Kubernetes, Kyverno policies can validate, mutate, and generate Kubernetes resources plus ensure OCI image supply chain security.
What are some alternatives?
KubeArmor - Runtime Security Enforcement System. Workload hardening/sandboxing and implementing least-permissive policies made easy leveraging LSMs (BPF-LSM, AppArmor).
falco - Cloud Native Runtime Security
polaris - Validation of best practices in your Kubernetes clusters
gatekeeper - š Gatekeeper - Policy Controller for Kubernetes
kube-score - Kubernetes object analysis with recommendations for improved reliability and security. kube-score actively prevents downtime and bugs in your Kubernetes YAML and Charts. Static code analysis for Kubernetes.
Kubewarden - Kubewarden is a policy engine for Kubernetes. It helps with keeping your Kubernetes clusters secure and compliant. Kubewarden policies can be written using regular programming languages or Domain Specific Languages (DSL) sugh as Rego. Policies are compiled into WebAssembly modules that are then distributed using traditional container registries.
polaris - Shopifyās design system to help us work together to build a great experience for all of our merchants.
OPA (Open Policy Agent) - Open Policy Agent (OPA) is an open source, general-purpose policy engine.
reviewdog - š¶ Automated code review tool integrated with any code analysis tools regardless of programming language
k-rail - Kubernetes security tool for policy enforcement
checkov - Prevent cloud misconfigurations and find vulnerabilities during build-time in infrastructure as code, container images and open source packages with Checkov by Bridgecrew.