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docs: move bpfman-operator details from README to docs
The bpfman-operator README.md contained operator details that belonged in the general docs. Move this content to the docs, and expand on the details where needed. Also update the bpfman-operator README to be closer to the bpfman README by adding the bpfman logo, CNCF logo, some of the relavent badges, and the star history. Signed-off-by: Billy McFall <[email protected]>
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| # bpfman-operator | ||
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| The `bpfman-operator` repository exists to deploy and manage bpfman within a Kubernetes cluster. | ||
| ![bpfman logo][bpfman-logo] <!-- markdownlint-disable-line first-line-heading --> | ||
| [bpfman-logo]: https://github.com/bpfman/bpfman/blob/main/docs/img/horizontal/color/bpfman-horizontal-color.png | ||
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| # bpfman: An eBPF Manager | ||
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| [![License][apache2-badge]][apache2-url] | ||
| ![Build status][build-badge] | ||
| [![Book][book-badge]][book-url] | ||
| [![Project maturity: alpha][project-maturity]]() | ||
| [![Go report card][go-report-card-badge]][go-report-card-report] | ||
| [![OpenSSF Scorecard][openssf-badge]][openssf-url] | ||
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| [apache2-badge]: https://img.shields.io/badge/License-Apache%202.0-blue.svg | ||
| [apache2-url]: https://opensource.org/licenses/Apache-2.0 | ||
| [build-badge]: https://img.shields.io/github/actions/workflow/status/bpfman/bpfman/build.yml?branch=main | ||
| [book-badge]: https://img.shields.io/badge/read%20the-book-9cf.svg | ||
| [book-url]: https://bpfman.io/ | ||
| [project-maturity]: https://img.shields.io/badge/maturity-alpha-orange.svg | ||
| [go-report-card-badge]: https://goreportcard.com/badge/github.com/bpfman/bpfman-operator | ||
| [go-report-card-report]: https://goreportcard.com/report/github.com/bpfman/bpfman-operator | ||
| [openssf-badge]: https://api.scorecard.dev/projects/github.com/bpfman/bpfman-operator/badge | ||
| [openssf-url]: https://scorecard.dev/viewer/?uri=github.com/bpfman/bpfman-operator | ||
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| bpfman is a Cloud Native Computing Foundation Sandbox project | ||
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| <picture> | ||
| <source media="(prefers-color-scheme: dark)" srcset="https://raw.githubusercontent.com/cncf/artwork/main/other/cncf/horizontal/white/cncf-white.png"/> | ||
| <source media="(prefers-color-scheme: light)" srcset="https://raw.githubusercontent.com/cncf/artwork/main/other/cncf/horizontal/color/cncf-color.png"/> | ||
| <img alt="CNCF Logo" src="https://raw.githubusercontent.com/cncf/artwork/main/other/cncf/horizontal/color/cncf-color.png" width="200px"/> | ||
| </picture> | ||
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| ## Welcome to bpfman-operator | ||
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| The `bpfman-operator` repository exists to deploy and manage [bpfman](https://github.com/bpfman/bpfman) | ||
| within a Kubernetes cluster. | ||
| This operator was built using some great tooling provided by the | ||
| [operator-sdk library](https://sdk.operatorframework.io/). | ||
| A great first step in understanding some of the functionality can be to just run `make help`. | ||
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| [](https://github.com/bpfman/bpfman-operator/blob/main/LICENSE) | ||
| []() | ||
| [](https://goreportcard.com/report/github.com/bpfman/bpfman-operator) | ||
| [](https://scorecard.dev/viewer/?uri=github.com/bpfman/bpfman-operator) | ||
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| ## Deploy bpfman Operator | ||
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| The `bpfman-operator` is running as a Deployment with a ReplicaSet of one. | ||
| It runs on the control plane and is composed of the containers `bpfman-operator` and | ||
| `kube-rbac-proxy`. | ||
| The operator is responsible for launching the bpfman Daemonset, which runs on every node. | ||
| The bpfman Daemonset is composed of the containers `bpfman`, `bpfman-agent`, and `node-driver-registrar`. | ||
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| ### Deploy Locally via KIND | ||
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| After reviewing the possible make targets it's quick and easy to get `bpfman` deployed locally on your system | ||
| via a [KIND cluster](https://kind.sigs.k8s.io/), run: | ||
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| ```bash | ||
| make run-on-kind | ||
| ``` | ||
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| > **NOTE:** By default, bpfman-operator deploys bpfman with CSI enabled. | ||
| CSI requires Kubernetes v1.26 due to a PR | ||
| ([kubernetes/kubernetes#112597](https://github.com/kubernetes/kubernetes/pull/112597)) | ||
| that addresses a gRPC Protocol Error that was seen in the CSI client code and it doesn't appear to have | ||
| been backported. | ||
| It is recommended to install kind v0.20.0 or later. | ||
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| ### Deploy To Openshift Cluster | ||
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| First deploy the operator with one of the following two options: | ||
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| #### 1. Manually with Kustomize | ||
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| To manually install with Kustomize and raw manifests, execute the following | ||
| commands. | ||
| The Openshift cluster needs to be up and running and specified in `~/.kube/config` | ||
| file. | ||
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| ```bash | ||
| make deploy-openshift | ||
| ``` | ||
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| To clean up at a later time, run: | ||
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| ```bash | ||
| make undeploy-openshift | ||
| ``` | ||
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| #### 2. Via the OLM bundle | ||
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| The other option for installing the `bpfman-operator` is through the | ||
| [OLM bundle](https://www.redhat.com/en/blog/deploying-operators-olm-bundles). | ||
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| Use `operator-sdk` to install the bundle like so: | ||
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| ```bash | ||
| operator-sdk run bundle quay.io/bpfman/bpfman-operator-bundle:latest --namespace bpfman | ||
| ``` | ||
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| To clean up at a later time, execute: | ||
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| ```bash | ||
| operator-sdk cleanup bpfman-operator | ||
| ``` | ||
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| #### 3. Deploy as a bundle from the Console's OperatorHub page | ||
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| This mode is recommended when you want to test the customer experience of navigating through the operators' | ||
| catalog and installing/configuring it manually through the UI, prior to committing the bundle to either: - | ||
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| - https://github.com/redhat-openshift-ecosystem/community-operators-prod | ||
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| or | ||
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| - https://github.com/k8s-operatorhub/community-operators/pulls | ||
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| ```sh | ||
| export BUNDLE_IMG=quay.io/$USER/bpfman-operator-bundle:developement | ||
| make bundle bundle-build bundle-push | ||
| export CATALOG_IMG=quay.io/$USER/bpfman-operator-catalog:developement | ||
| make catalog-build catalog-push catalog-deploy | ||
| ``` | ||
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| To clean up at a later time, execute: | ||
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| ```bash | ||
| make catalog-undeploy | ||
| ``` | ||
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| ## Verify the Installation | ||
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| Regardless of the deployment method, if the `bpfman-operator` was deployed successfully, | ||
| you will see the `bpfman-daemon` and `bpfman-operator` pods running without errors: | ||
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| ```bash | ||
| kubectl get pods -n bpfman | ||
| NAME READY STATUS RESTARTS AGE | ||
| bpfman-daemon-w24pr 3/3 Running 0 130m | ||
| bpfman-operator-78cf9c44c6-rv7f2 2/2 Running 0 132m | ||
| ``` | ||
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| ## Deploy an eBPF Program to the cluster | ||
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| To test the deployment simply deploy one of the sample `xdpPrograms`: | ||
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| ```bash | ||
| kubectl apply -f config/samples/bpfman.io_v1alpha1_xdp_pass_xdpprogram.yaml | ||
| ``` | ||
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| If loading of the XDP Program to the selected nodes was successful, it will be reported | ||
| back to the user via the `xdpProgram`'s status field: | ||
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| ```bash | ||
| kubectl get xdpprogram xdp-pass-all-nodes -o yaml | ||
| apiVersion: bpfman.io/v1alpha1 | ||
| kind: XdpProgram | ||
| metadata: | ||
| annotations: | ||
| kubectl.kubernetes.io/last-applied-configuration: | | ||
| {"apiVersion":"bpfman.io/v1alpha1","kind":"XdpProgram","metadata":{"annotations":{},"labels":{"app.kubernetes.io/name":"xdpprogram"},"name":"xdp-pass-all-nodes"},"spec":{"bpffunctionname":"pass","bytecode":{"image":{"url":"quay.io/bpfman-bytecode/xdp_pass:latest"}},"globaldata":{"GLOBAL_u32":[13,12,11,10],"GLOBAL_u8":[1]},"interfaceselector":{"primarynodeinterface":true},"nodeselector":{},"priority":0}} | ||
| creationTimestamp: "2023-11-07T19:16:39Z" | ||
| finalizers: | ||
| - bpfman.io.operator/finalizer | ||
| generation: 2 | ||
| labels: | ||
| app.kubernetes.io/name: xdpprogram | ||
| name: xdp-pass-all-nodes | ||
| resourceVersion: "157187" | ||
| uid: 21c71a61-4e73-44eb-9b49-07af2866d25b | ||
| spec: | ||
| bpffunctionname: pass | ||
| bytecode: | ||
| image: | ||
| imagepullpolicy: IfNotPresent | ||
| url: quay.io/bpfman-bytecode/xdp_pass:latest | ||
| globaldata: | ||
| GLOBAL_u8: AQ== | ||
| GLOBAL_u32: DQwLCg== | ||
| interfaceselector: | ||
| primarynodeinterface: true | ||
| mapownerselector: {} | ||
| nodeselector: {} | ||
| priority: 0 | ||
| proceedon: | ||
| - pass | ||
| - dispatcher_return | ||
| status: | ||
| conditions: | ||
| - lastTransitionTime: "2023-11-07T19:16:42Z" | ||
| message: bpfProgramReconciliation Succeeded on all nodes | ||
| reason: ReconcileSuccess | ||
| status: "True" | ||
| type: ReconcileSuccess | ||
| ``` | ||
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| To view information in listing form simply run: | ||
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| ```bash | ||
| kubectl get xdpprogram -o wide | ||
| NAME BPFFUNCTIONNAME NODESELECTOR PRIORITY INTERFACESELECTOR PROCEEDON | ||
| xdp-pass-all-nodes pass {} 0 {"primarynodeinterface":true} ["pass","dispatcher_return"] | ||
| ``` | ||
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| ## API Types Overview | ||
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| Refer to [api-spec.md](https://bpfman.io/main/developer-guide/api-spec/) for a more detailed description of all the | ||
| bpfman Kubernetes API types. | ||
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| ### Cluster Scoped Versus Namespaced Scoped CRDs | ||
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| For security reasons, cluster admins may want to limit certain applications to only loading eBPF programs | ||
| within a given namespace. | ||
| To provide these tighter controls on eBPF program loading, some of the bpfman Custom Resource Definitions (CRDs) | ||
| are Namespace scoped. | ||
| Not all eBPF programs make sense to be namespaced scoped. | ||
| The namespaced scoped CRDs use the "<ProgramType\>NsProgram" identifier and cluster scoped CRDs to use "<ProgramType\>Program" | ||
| identifier. | ||
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| ### Multiple Program CRDs | ||
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| The multiple `*Program` CRDs are the bpfman Kubernetes API objects most relevant to users and can be used to | ||
| understand clusterwide state for an eBPF program. | ||
| It's designed to express how, and where eBPF programs are to be deployed within a Kubernetes cluster. | ||
| Currently bpfman supports: | ||
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| * `fentryProgram` | ||
| * `fexitProgram` | ||
| * `kprobeProgram` | ||
| * `tcProgram` and `tcNsProgram` | ||
| * `tcxProgram` and `tcxNsProgram` | ||
| * `tracepointProgram` | ||
| * `uprobeProgram` and `uprobeNsProgam` | ||
| * `xdpProgram` and `xdpNsProgram` | ||
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| There is also the `bpfApplication` and `bpfNsApplication` CRDs, which are | ||
| designed for managing eBPF programs at an application level within a Kubernetes cluster. | ||
| These CRD allows Kubernetes users to define which eBPF programs are essential for an application's operations | ||
| and specify how these programs should be deployed across the cluster. | ||
| With cluster scoped variant (`bpfApplication`), any variation of the cluster scoped | ||
| eBPF programs can be loaded. | ||
| With namespace scoped variant (`bpfNsApplication`), any variation of the namespace scoped | ||
| eBPF programs can be loaded. | ||
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| ### BpfProgram and BpfNsProgram CRD | ||
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| The `BpfProgram` and `BpfNsProgram` CRDs are used internally by the bpfman-deployment to keep track of per | ||
| node bpfman state such as map pin points, and to report node specific errors back to the user. | ||
| Kubernetes' users/controllers are only allowed to view these objects, NOT create or edit them. | ||
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| Applications wishing to use `bpfman` to deploy/manage their eBPF programs in Kubernetes will make use of this | ||
| object to find references to the bpfMap pinpoints (`spec.maps`) to configure their eBPF programs. | ||
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| ## Developer | ||
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| For more architecture details about `bpfman-operator`, refer to | ||
| [Developing the bpfman-operator](https://bpfman.io/v0.5.5/developer-guide/develop-operator) | ||
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| ### Bpfman-agent profiling | ||
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| bpfman-agent process use port `6060` for Golang profiling to be able to get the different profiles | ||
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| 1- Set port-forward rule in a different terminal | ||
| ```shell | ||
| oc get pods -n bpfman | ||
| NAME READY STATUS RESTARTS AGE | ||
| bpfman-daemon-76v57 3/3 Running 0 14m | ||
| bpfman-operator-7f67bc7c57-ww52z 2/2 Running 0 14m | ||
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| oc -n bpfman port-forward bpfman-daemon-76v57 6060 | ||
| ``` | ||
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| 2- Download the required profiles: | ||
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| `curl -o <profile> http://localhost:6060/debug/pprof/<profile>` | ||
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| Where <profile> can be: | ||
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| | profile | description | | ||
| |--------------|-------------------------------------------------------------------------------| | ||
| | allocs | A sampling of all memory allocations | | ||
| | block | Stack traces that led to blocking on synchronization primitives | | ||
| | cmdline | The command line invocation of the current program | | ||
| | goroutine | Stack traces of all current goroutines | | ||
| | heap | A sampling of memory allocations of live objects. | | ||
| | | You can specify the gc GET parameter to run GC before taking the heap sample. | | ||
| | mutex | Stack traces of holders of contended mutexes | | ||
| | profile | CPU profile. | | ||
| | | You can specify the duration in the seconds GET parameter. | | ||
| | threadcreate | Stack traces that led to the creation of new OS threads | | ||
| | trace | A trace of execution of the current program. | | ||
| | | You can specify the duration in the seconds GET parameter. | | ||
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| Example: | ||
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| ```shell | ||
| curl "http://localhost:6060/debug/pprof/trace?seconds=20" -o trace | ||
| curl "http://localhost:6060/debug/pprof/profile?duration=20" -o cpu | ||
| curl "http://localhost:6060/debug/pprof/heap?gc" -o heap | ||
| curl "http://localhost:6060/debug/pprof/allocs" -o allocs | ||
| curl "http://localhost:6060/debug/pprof/goroutine" -o goroutine | ||
| ``` | ||
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| 3- Use [go tool pprof](https://go.dev/blog/pprof) to dig into the profiles (go tool trace for the trace profile) or use | ||
| web interface for example `go tool pprof -http=:8080 cpu` | ||
| Here are some links to help in your bpfman journey (all links are from the bpfman website <https://bpfman.io/>): | ||
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| - [Welcome to bpfman](https://bpfman.io/) for overview of bpfman. | ||
| - [Deploying Example eBPF Programs On Kubernetes](https://bpfman.io/main/getting-started/example-bpf-k8s/) | ||
| for some examples of deploying eBPF programs through `bpfman` in a Kubernetes deployment. | ||
| - [Setup and Building bpfman](https://bpfman.io/main/getting-started/building-bpfman/) for instructions | ||
| on setting up your development environment and building bpfman. | ||
| - [Example eBPF Programs](https://bpfman.io/main/getting-started/example-bpf/) for some | ||
| examples of eBPF programs written in Go, interacting with `bpfman`. | ||
| - [Deploying the bpfman-operator](https://bpfman.io/main/getting-started/develop-operator/) for details on launching | ||
| bpfman in a Kubernetes cluster. | ||
| - [Developing the bpfman-operator](https://bpfman.io/main/developer-guide/develop-operator/) for more architecture | ||
| details about `bpfman-operator` and details on developing bpfman-operator. | ||
| - [Meet the Community](https://bpfman.io/main/governance/meetings/) for details on community meeting details. | ||
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| ## Star History | ||
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| <a href="https://star-history.com/#bpfman/bpfman-operator&Date"> | ||
| <picture> | ||
| <source media="(prefers-color-scheme: dark)" srcset="https://api.star-history.com/svg?repos=bpfman/bpfman-operator&type=Date&theme=dark" /> | ||
| <source media="(prefers-color-scheme: light)" srcset="https://api.star-history.com/svg?repos=bpfman/bpfman-operator&type=Date" /> | ||
| <img alt="Star History Chart" src="https://api.star-history.com/svg?repos=bpfman/bpfman-operator&type=Date" /> | ||
| </picture> | ||
| </a> |