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sysdig

Observability
Open source · NOASSERTION

sysdig is a command-line system exploration and troubleshooting tool.

updated 2026-07-01

What it is

sysdig is a command-line system exploration and troubleshooting tool. It captures system calls and other OS-level events (network, file I/O, container lifecycle) via a kernel module or eBPF probe, then lets you filter and analyze that stream with a syntax similar to tcpdump combined with strace and lsof. It's container-aware out of the box — you can scope captures to a specific container, pod, or namespace without extra tooling. Think of it as "one binary that answers 'what is this process/container actually doing right now'" rather than a full observability stack.

Who builds it and why

Sysdig (the company) builds and maintains this project. It's the original tool that put the company on the map before they built a commercial cloud security and monitoring platform on top of the same instrumentation (kernel probe/eBPF) and the Falco runtime security engine, which they also created and donated to CNCF. The open-source CLI tool remains the low-level foundation — it's the debugging layer, not the product. The company's incentive is straightforward: keep the free tool credible and widely used as a funnel and trust-builder for the commercial security/monitoring product and for Falco adoption.

Production readiness signal

  • 8,264 GitHub stars, 196 contributors — healthy, long-standing community engagement for an infra tool of this type.
  • Last commit April 2026 — actively maintained, not abandoned.
  • Latest release 0.41.4 — sub-1.0 versioning after many years in production use across the industry says more about semver discipline than instability; this tool has been running in prod environments since roughly the early 2010s.
  • License field shows NOASSERTION — GitHub couldn't auto-detect the license from the repo metadata. Verify the actual LICENSE file before adopting in a regulated environment; don't assume Apache 2.0 just because that's common in this space.
  • CNCF maturity: not publicly available — this tool itself is not a CNCF project (Falco is; sysdig the CLI is not).
  • Founded: not publicly available.

Net: this is a mature, battle-tested piece of infrastructure tooling, but confirm licensing terms yourself rather than trusting metadata.

Who should use this

  • Platform/SRE engineers who need kernel-level truth during an incident — "what syscalls is this container issuing," "what process opened this file," "what's actually generating this network traffic" — without deploying an agent stack first.
  • Teams debugging container escapes, unexpected resource use, or opaque third-party binaries in production.
  • Anyone who wants strace/tcpdump/lsof semantics but scoped natively to containers and Kubernetes objects.
  • Security responders doing live forensics on a compromised container before killing it.

Who should NOT use this

  • Teams looking for a dashboard-first, always-on observability platform — sysdig is a point-in-time exploration tool, not a metrics/traces/logs pipeline. Pair it with Prometheus/OpenTelemetry, don't replace them with it.
  • Anyone needing continuous runtime security enforcement or alerting — that's Falco's job, not this tool's.
  • Environments where kernel module or eBPF probe installation is restricted (some hardened managed Kubernetes offerings, some regulated air-gapped clusters) — you may not be able to load the probe at all.
  • Teams wanting a managed SaaS experience with support SLAs — this is a raw CLI tool; if you want vendor support and UI, you're actually buying Sysdig's commercial platform, not this.

Alternatives

  • Falco — same company's runtime security/detection engine; complementary rather than competing, use both together.
  • bpftrace / BCC tools — lower-level eBPF scripting toolkits, more flexible but more manual than sysdig's purpose-built filters.
  • kubectl-trace / Inspektor Gadget — Kubernetes-native eBPF debugging tools with tighter kubectl integration if you want less standalone tooling.

Pricing

Fully open source, free to use. No paid tier for the CLI tool itself. The company monetizes a separate commercial cloud security/monitoring platform built on the same underlying instrumentation technology — that's a different product with its own pricing, not a gate on this tool.

Frequently asked

What is sysdig?+
sysdig is a command-line system exploration and troubleshooting tool. It captures system calls and other OS-level events (network, file I/O, container lifecycle) via a kernel module or eBPF probe, then lets you filter and analyze that stream with a syntax similar to tcpdump combined with strace and lsof.
Who builds sysdig?+
Sysdig (the company) builds and maintains this project. It's the original tool that put the company on the map before they built a commercial cloud security and monitoring platform on top of the same instrumentation (kernel probe/eBPF) and the Falco runtime security engine, which they also created and donated to CNCF.
Is sysdig production ready?+
8,264 GitHub stars, 196 contributors — healthy, long-standing community engagement for an infra tool of this type. Last commit April 2026 — actively maintained, not abandoned. Latest release 0.41.4 — sub-1.
Who should use sysdig?+
Platform/SRE engineers who need kernel-level truth during an incident — "what syscalls is this container issuing," "what process opened this file," "what's actually generating this network traffic" — without deploying an agent stack first.
Who should not use sysdig?+
Teams looking for a dashboard-first, always-on observability platform — sysdig is a point-in-time exploration tool, not a metrics/traces/logs pipeline. Pair it with Prometheus/OpenTelemetry, don't replace them with it.
What are the alternatives to sysdig?+
Falco — same company's runtime security/detection engine; complementary rather than competing, use both together. bpftrace / BCC tools — lower-level eBPF scripting toolkits, more flexible but more manual than sysdig's purpose-built filters.
How much does sysdig cost?+
Fully open source, free to use. No paid tier for the CLI tool itself. The company monetizes a separate commercial cloud security/monitoring platform built on the same underlying instrumentation technology — that's a different product with its own pricing, not a gate on this tool.