BCC is a toolkit for creating efficient kernel tracing and manipulation programs built upon eBPF, and includes several useful command-line tools and examples. BCC eases writing of eBPF programs for kernel instrumentation in C, includes a wrapper around LLVM, and front-ends in Python and Lua. It also provides a high-level library for direct integration into applications.
bpftrace is a high-level tracing language for Linux eBPF. Its language is inspired by awk and C, and predecessor tracers such as DTrace and SystemTap. bpftrace uses LLVM as a backend to compile scripts to eBPF bytecode and makes use of BCC as a library for interacting with the Linux eBPF subsystem as well as existing Linux tracing capabilities and attachment points.
Cilium is an open source project that provides eBPF-powered networking, security and observability. It has been specifically designed from the ground up to bring the advantages of eBPF to the world of Kubernetes and to address the new scalability, security and visibility requirements of container workloads.
Falco is a behavioral activity monitor designed to detect anomalous activity in applications. Falco audits a system at the Linux kernel layer with the help of eBPF. It enriches gathered data with other input streams such as container runtime metrics and Kubernetes metrics, and allows to continuously monitor and detect container, application, host, and network activity.
Katran is a C++ library and eBPF program to build a high-performance layer 4 load balancing forwarding plane. Katran leverages the XDP infrastructure from the Linux kernel to provide an in-kernel facility for fast packet processing. Its performance scales linearly with the number of NIC's receive queues and it uses RSS friendly encapsulation for forwarding to L7 load balancers.
The Linux kernel contains the eBPF runtime required to run eBPF programs. It implements the bpf(2) system call for interacting with programs, maps, BTF and various attachment points where eBPF programs can be executed from. The kernel contains a eBPF verifier in order to check programs for safety and a JIT compiler to translate programs to native machine code. User space tooling such as bpftool and libbpf are also maintained as part of the upstream kernel.
The LLVM compiler infrastructure contains the eBPF backend required to translate programs written in a C-like syntax to eBPF instructions. LLVM generates eBPF ELF files which contain program code, map descriptions, relocation information and BTF meta data. These ELF files contain all necessary information for eBPF loaders such as libbpf to prepare and load programs into the Linux kernel. The LLVM project also contains additional developer tools such as an eBPF object file disassembler.
eBPF is designed as a pure Go library that provides utilities for loading, compiling, and debugging eBPF programs. It has minimal external dependencies and is intended to be used in long running processes. The gobpf is a CGo-based library which provides Go bindings for the BCC framework as well as low-level routines to load and use eBPF programs from ELF files.
libbpf is a C/C++ based library which is maintained as part of the upstream Linux kernel. It contains an eBPF loader which takes over processing LLVM generated eBPF ELF files for loading into the kernel. libbpf received a major boost in capabilities and sophistication and closed many existing gaps with BCC as a library. It also supports important features not available in BCC such as global variables and BPF skeletons.
libbpf-rs is a safe, idiomatic, and opinionated wrapper API around libbpf written in Rust. libbpf-rs, together with libbpf-cargo (libbpf cargo plugin) allows to write 'compile once run everywhere' (CO-RE) eBPF programs. redbpf is a Rust eBPF toolchain that contains a collection of Rust libraries to work with eBPF programs.
Hubble is a fully distributed networking and security observability platform for cloud native workloads. It is built on top of Cilium and eBPF to enable deep visibility into the communication and behavior of services as well as the networking infrastructure in a completely transparent manner.
kubectl-trace is a kubectl plugin that allows for scheduling the execution of bpftrace(8) programs in Kubernetes clusters. kubectl-trace does not require installation of any components directly onto a Kubernetes cluster in order to execute bpftrace programs. When pointed to a cluster, it schedules a temporary job called trace-runner that executes bpftrace.
ply is a dynamic tracer for Linux which is built upon eBPF. It has been designed with embedded systems in mind, is written in C and all that ply needs to run is libc and a modern Linux kernel with eBPF support, meaning, it does not depend on LLVM for its program generation. It has a C-like syntax for writing scripts and is heavily inspired by awk(1) and dtrace(1).