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After implementing the health gate, added comprehensive safety measures to prevent the health checks themselves from becoming a new failure point. **Problem**: Previous commit added strict health checks but could fail in edge cases: - `pct exec` could hang if container stopped/frozen → installer deadlocks - systemctl/journalctl might not be available → diagnostics fail - Container access check could fail for transient reasons - pvecm error detection was fragile (string matching specific messages) **Solutions Implemented**: 1. **Timeouts on All External Commands** (install.sh:1596,1618) - `timeout 5` on systemctl checks - `timeout 10` on pct exec checks - Prevents installer from hanging indefinitely 2. **Graceful Degradation** (install.sh:1602-1630) - Check for systemctl/pct availability before using - Warn if tools missing instead of failing - Container check is warning-only (may be transient) - Only fail on critical checks: service running, socket exists 3. **Bypass Flag Support** (install.sh:1589-1594) - Set `PULSE_SKIP_HEALTH_CHECKS=1` to bypass all checks - Documented in error messages for troubleshooting - Allows installation in unsupported environments 4. **Flexible Diagnostics** (install.sh:1640-1647) - Use journalctl if available, fallback to syslog - Conditional tool-specific advice 5. **Broader Error Detection** (ssh.go:582-628) - List of 14 standalone indicators (vs 5 hardcoded checks) - Case-insensitive matching for localization tolerance - Permissive strategy: treat any known pattern as standalone - Handles variations: "no cluster", "IPC", "connection refused", etc. 6. **Enhanced Test Coverage** (ssh_test.go:+35 lines) - Added 3 new test cases (variation patterns) - Tests now cover 8 standalone scenarios + 3 negative cases - All tests pass (11/11) **Impact**: - Health gate won't block installation in edge cases - Better user experience on non-standard setups - Standalone detection handles more error message variations - Clear escape hatch for troubleshooting (bypass flag) **Confidence Level**: High - All tests pass (bash syntax + Go unit tests) - Graceful fallbacks for every external command - Only critical checks are hard failures - Warnings guide users through validation issues Related to #571 |
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