api
cert-manager
api | cert-manager | |
---|---|---|
8 | 101 | |
628 | 11,533 | |
2.7% | 1.3% | |
9.2 | 9.8 | |
6 days ago | about 15 hours ago | |
Go | Go | |
Apache License 2.0 | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
api
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Exemple of Web API written in Go that you'd consider high quality
Good point, here it is https://github.com/kubernetes/api
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alternative to kubectl explain?
Better is probably subjective, but you have options. You can run the doc website locally (https://github.com/kubernetes/website) or search the API definitions directly (https://github.com/kubernetes/api). Good ol `git grep` I suppose.
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Using client-go to `kubectl apply` against the Kubernetes API directly with multiple types in a single YAML file
I understand that I need to do some (un)marshalling of the YAML bytes into the correct API types defined in package: https://github.com/kubernetes/api
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Why isn't there a good/standard C++ API for kubernetes
Despite that though, someone was generous enough to ensure that there are protobuf files laying around for us to use.
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Implementing a simple K8s admission controller in Go
Then we have to create the admissionHandler to receive all the requests from our webhooks. These requests are coming with a JSON-encoded AdmissionReview (with the Request field filled) in the request body. The response should be a JSON AdmissionReview with the Response field filled.
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5 Time saving things about client-go, I didn't know!
k8s.io/client-go isn’t enough to talk to kubernetes API, you need k8s.io/api and k8s.io/apimachinery too You have to match their versions for it to all work! See the client-go versioning for simple instructions!
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Validating Admission Requests in a Validating Admission Webhook
You can find the definitions of the AdmissionReview object in k8s.io/api repository.
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Parsing Admission Requests in a Validating Admission Webhook
Note how I am just using the upstream AdmissionReview type from k8s.io/api/admission/v1 here. You can find other Kubernetes types in the k8s.io/api repo as well.
cert-manager
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deploying a minio service to kubernetes
cert-manager
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Upgrading Hundreds of Kubernetes Clusters
The second one is a combination of tools: External DNS, cert-manager, and NGINX ingress. Using these as a stack, you can quickly deploy an application, making it available through a DNS with a TLS without much effort via simple annotations. When I first discovered External DNS, I was amazed at its quality.
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Run WebAssembly on DigitalOcean Kubernetes with SpinKube - In 4 Easy Steps
On top of its core components, SpinKube depends on cert-manager. cert-Manager is responsible for provisioning and managing TLS certificates that are used by the admission webhook system of the Spin Operator. Let’s install cert-manager and KWasm using the commands shown here:
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Importing kubernetes manifests with terraform for cert-manager
terraform { required_providers { kubectl = { source = "gavinbunney/kubectl" version = "1.14.0" } } } # The reference to the current project or a AWS project data "google_client_config" "provider" {} # The reference to the current cluster or EKS data "google_container_cluster" "my_cluster" { name = var.cluster_name location = var.cluster_location } # We configure the kubectl provider to use those values for authenticating provider "kubectl" { host = data.google_container_cluster.my_cluster.endpoint token = data.google_client_config.provider.access_token cluster_ca_certificate = base64decode(data.google_container_cluster.my_cluster.master_auth[0].cluster_ca_certificate) } #Download the multiple manifests file. data "http" "cert_manager_crds" { url = "https://github.com/cert-manager/cert-manager/releases/download/v${var.cert_manager_version}/cert-manager.crds.yaml" } data "kubectl_file_documents" "cert_manager_crds" { content = data.http.cert_manager_crds.response_body lifecycle { precondition { condition = 200 == data.http.cert_manager_crds.status_code error_message = "Status code invalid" } } } # We use the for_each or else this kubectl_manifest will only import the first manifest in the file. resource "kubectl_manifest" "cert_manager_crds" { for_each = data.kubectl_file_documents.cert_manager_crds.manifests yaml_body = each.value }
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An opinionated template for deploying a single k3s cluster with Ansible backed by Flux, SOPS, GitHub Actions, Renovate, Cilium, Cloudflare and more!
SSL certificates thanks to Cloudflare and cert-manager
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Deploy Rancher on AWS EKS using Terraform & Helm Charts
kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/${CERT_MANAGER_VERSION}/cert-manager.crds.yaml
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Setup/Design internal PKI
put the Sub-CA inside hashicorp vault to be used for automatic signing of services like https://cert-manager.io/ inside our k8s clusters.
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Task vs Make - Final Thoughts
install-cert-manager: desc: Install cert-manager deps: - init-cluster cmds: - kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/{{.CERT_MANAGER_VERSION}}/cert-manager.yaml - echo "Waiting for cert-manager to be ready" && sleep 25 status: - kubectl -n cert-manager get pods | grep Running | wc -l | grep -q 3
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Easy HTTPS for your private networks
I've been pretty frustrated with how private CAs are supported. Your private root CA can be maliciously used to MITM every domain on the Internet, even though you intend to use it for only a couple domain names. Most people forget to set Name Constraints when they create these and many helper tools lack support [1][2]. Worse, browser support for Name Constraints has been slow [3] and support isn't well tracked [4]. Public CAs give you certificate transparency and you can subscribe to events to detect mis-issuance. Some hosted private CAs like AWS's offer logs [5], but DIY setups don't.
Even still, there are a lot of folks happily using private CAs, they aren't the target audience for this initial release.
[1] https://github.com/FiloSottile/mkcert/issues/302
[2] https://github.com/cert-manager/cert-manager/issues/3655
[3] https://alexsci.com/blog/name-non-constraint/
[4] https://github.com/Netflix/bettertls/issues/19
[5] https://docs.aws.amazon.com/privateca/latest/userguide/secur...
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☸️ Managed Kubernetes : Our dev is on AWS, our prod is on OVH
the Cert Manager
What are some alternatives?
kubectl-explore - A better kubectl explain with the fuzzy finder
metallb - A network load-balancer implementation for Kubernetes using standard routing protocols
kubernetes - Production-Grade Container Scheduling and Management
aws-load-balancer-controller - A Kubernetes controller for Elastic Load Balancers
apimachinery
Portainer - Making Docker and Kubernetes management easy.
c - Official C client library for Kubernetes
awx-operator - An Ansible AWX operator for Kubernetes built with Operator SDK and Ansible. 🤖
aws-iam-authenticator - A tool to use AWS IAM credentials to authenticate to a Kubernetes cluster
k3s - Lightweight Kubernetes
skipper - An HTTP router and reverse proxy for service composition, including use cases like Kubernetes Ingress
oauth2-proxy - A reverse proxy that provides authentication with Google, Azure, OpenID Connect and many more identity providers.