1421b4659e
Add complete TUI application for monitoring Kubernetes clusters and host systems. Features include: Core features: - Collector framework with concurrent scheduling - Host collectors: disk, memory, load, network - Kubernetes collectors: pods, nodes, workloads, events with informers - Issue deduplication, state management, and resolve-after logic - Bubble Tea TUI with table view, details pane, and filtering - JSON export functionality UX improvements: - Help overlay with keybindings - Priority/category filters with visual indicators - Direct priority jump (0/1/2/3) - Bulk acknowledge (Shift+A) - Clipboard copy (y) - Theme toggle (T) - Age format toggle (d) - Wide title toggle (t) - Vi-style navigation (j/k) - Home/End jump (g/G) - Rollup drill-down in details Robustness: - Grace period for unreachable clusters - Rollups for high-volume issues - Flap suppression - RBAC error handling Files: All core application code with tests for host collectors, engine, store, model, and export packages.
102 lines
2.4 KiB
Go
102 lines
2.4 KiB
Go
package k8s
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import (
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"fmt"
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"strings"
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"time"
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corev1 "k8s.io/api/core/v1"
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"tower/internal/model"
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)
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var warningEventReasons = map[string]struct{}{
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"FailedScheduling": {},
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"FailedMount": {},
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"BackOff": {},
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"Unhealthy": {},
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"OOMKilling": {},
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"FailedPull": {},
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"Forbidden": {},
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"ErrImagePull": {},
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"ImagePullBackOff": {},
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}
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// IssuesFromEvents applies the PLAN.md Event rules.
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//
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// Dedup by (object UID, reason). For v1 Events, this is approximated by
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// (involvedObject.uid, reason).
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func IssuesFromEvents(events []*corev1.Event, now time.Time) []model.Issue {
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_ = now
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out := make([]model.Issue, 0, 16)
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seen := map[string]struct{}{}
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for _, e := range events {
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if e == nil {
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continue
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}
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if strings.ToLower(e.Type) != strings.ToLower(string(corev1.EventTypeWarning)) {
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continue
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}
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if _, ok := warningEventReasons[e.Reason]; !ok {
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continue
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}
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uid := string(e.InvolvedObject.UID)
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k := uid + ":" + e.Reason
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if _, ok := seen[k]; ok {
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continue
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}
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seen[k] = struct{}{}
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ns := e.InvolvedObject.Namespace
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if ns == "" {
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ns = e.Namespace
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}
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objKey := e.InvolvedObject.Kind + "/" + e.InvolvedObject.Name
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title := fmt.Sprintf("K8s Event %s: %s (%s)", e.Reason, objKey, ns)
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if ns == "" {
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title = fmt.Sprintf("K8s Event %s: %s", e.Reason, objKey)
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}
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details := strings.TrimSpace(e.Message)
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if details == "" {
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details = "Warning event emitted by Kubernetes."
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}
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out = append(out, model.Issue{
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ID: fmt.Sprintf("k8s:event:%s:%s", uid, e.Reason),
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Category: model.CategoryKubernetes,
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Priority: model.PriorityP2,
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Title: title,
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Details: details,
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Evidence: map[string]string{
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"kind": e.InvolvedObject.Kind,
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"reason": e.Reason,
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"namespace": ns,
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"name": e.InvolvedObject.Name,
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"uid": uid,
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},
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SuggestedFix: suggestedFixForEvent(ns, e.InvolvedObject.Kind, e.InvolvedObject.Name),
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})
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}
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return out
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}
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func suggestedFixForEvent(ns, kind, name string) string {
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kindLower := strings.ToLower(kind)
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if ns != "" {
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switch kindLower {
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case "pod":
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return fmt.Sprintf("kubectl -n %s describe pod %s", ns, name)
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case "node":
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return fmt.Sprintf("kubectl describe node %s", name)
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default:
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return fmt.Sprintf("kubectl -n %s describe %s %s", ns, kindLower, name)
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}
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}
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return fmt.Sprintf("kubectl describe %s %s", kindLower, name)
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}
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