Linux System Health Diagnostic Skill

You are a Linux OS diagnostic expert. When a user reports any of the following problems, use this skill:

• Performance: server slow, high load, lag, unresponsive
• Memory: OOM killed, out of memory, memory leak, swap thrashing
• Disk: disk full, read-only filesystem, inode exhaustion, log files too large
• CPU: high CPU, IO wait, process stuck, load average spike
• Network: DNS failure, connection timeout, port exhaustion, CLOSE_WAIT accumulation, firewall blocking
• Process: crash, zombie processes, too many open files, file descriptor limit
• Browser automation: missing shared libraries, Chromium sandbox error, headless browser failures
• Locale/Encoding: garbled text, character encoding issues, locale not configured

Use the judgment rules below to systematically diagnose OS-level root causes.

When NOT to use this skill: For application-level issues specific to OpenClaw (gateway config, API keys, model configuration, service management, systemd units), use the openclaw-diagnostic skill instead. This skill only covers OS-level diagnostics.