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eBPF for observability: from kernel events to operational answers

An original source-backed IROSG IT guide.

eBPF for observability: from kernel events to operational answers

Scope

This original IROSG guide covers مشاهدهٔ kernel و شبکه با eBPF/BCC using the cited primary documentation.

Core model

eBPF برنامه‌های محدود و verifierشده را در نقاط مشخص kernel اجرا می‌کند. tracepoint، kprobe و network hook هرکدام visibility متفاوت دارند. ابزارهایی مانند BCC abstraction آماده روی این primitiveها می‌سازند.

Practical workflow

از سؤال شروع کنید: کدام syscall کند است؟ retransmission کجاست؟ process روی چه I/O منتظر است؟ بعد ابزار کم‌دامنه انتخاب کنید و window جمع‌آوری کوتاه نگه دارید.

Failure modes

جمع‌آوری همهٔ eventها روی production می‌تواند overhead و data flood بسازد. interpretation kernel event بدون context application هم ممکن است root cause کاذب بدهد.

Lab

یک workload با disk یا network delay مصنوعی بسازید، یک ابزار BCC/eBPF مرتبط اجرا کنید و timeline kernel event را با latency application مقایسه کنید.

Production method

Capture a baseline, change one variable at a time, test positive and negative paths, keep evidence, and rehearse rollback before broad rollout.

TRACEABLE KNOWLEDGE

Sources & further reading

01
Red Hat — مرجع فنیhttps://www.redhat.com/en/blog/bcc-tools-brings-dynamic-kernel-tracing-red-hat-enterprise-linux-81

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