EviTrace

EviTrace is an evidence-driven root cause analysis tool for Linux / openKylin cloud-native systems.

The current prototype supports reproducible network delay fault injection, OS-level metric collection, CSV logging, time-series visualization, and temporal causal root cause ranking.

Features

• Network delay fault injection based on tc netem
• CPU, memory, disk I/O, and network latency collection
• CSV-based experiment logging
• Network latency time-series visualization
• Root cause candidate ranking
• RCA report generation

Tested Environment

• Ubuntu 20.04 VM
• Network interface: ens33

openKylin compatibility test is planned as the next step.

Installation

sudo apt update
sudo apt install -y python3-pip iputils-ping iproute2 stress-ng fio sysstat

pip3 install -r requirements.txt

## One-Command Reproduction

To reproduce the full EviTrace network-delay diagnosis pipeline:

```bash
bash scripts/run_full_network_delay_pipeline.sh ens33