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[log] Add debug logging to extractContainerIDFromCgroupFiles #9661

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Merged
lpcox merged 1 commit into from
Jul 20, 2026
Merged

[log] Add debug logging to extractContainerIDFromCgroupFiles #9661

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5 changes: 5 additions & 0 deletions internal/sys/container.go
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Original file line number Diff line number Diff line change
Expand Up @@ -88,15 +88,20 @@ func extractContainerIDFromCgroup() string {
// extractContainerIDFromCgroupFiles reads the given cgroup files in order and
// returns the first container ID found, or "" if none is extractable.
func extractContainerIDFromCgroupFiles(paths []string) string {
logSys.Printf("Scanning %d cgroup file(s) for container ID", len(paths))
for _, cgroupPath := range paths {
data, err := os.ReadFile(cgroupPath)
if err != nil {
logSys.Printf("Skipping cgroup file (unreadable): path=%s, err=%v", cgroupPath, err)
continue
}
if id := extractContainerIDFromContent(string(data)); id != "" {
logSys.Printf("Extracted container ID from cgroup file: path=%s, id=%s", cgroupPath, id)
return id
}
logSys.Printf("No container ID found in cgroup file: path=%s", cgroupPath)
}
logSys.Print("No container ID found in any cgroup file")
return ""
}

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