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.
80 lines
2.0 KiB
Go
80 lines
2.0 KiB
Go
package k8s
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import (
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"fmt"
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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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// IssuesFromNodes applies the PLAN.md node rules.
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//
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// Pure rule function: does not talk to the API server.
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func IssuesFromNodes(nodes []*corev1.Node) []model.Issue {
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out := make([]model.Issue, 0, 8)
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for _, n := range nodes {
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if n == nil {
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continue
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}
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// Ready / NotReady
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if cond := findNodeCondition(n, corev1.NodeReady); cond != nil {
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if cond.Status != corev1.ConditionTrue {
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out = append(out, model.Issue{
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ID: fmt.Sprintf("k8s:node:%s:NotReady", n.Name),
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Category: model.CategoryKubernetes,
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Priority: model.PriorityP0,
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Title: fmt.Sprintf("Node NotReady: %s", n.Name),
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Details: cond.Message,
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Evidence: map[string]string{
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"kind": "Node",
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"reason": "NotReady",
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"namespace": "",
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"node": n.Name,
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"status": string(cond.Status),
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},
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SuggestedFix: "kubectl describe node " + n.Name,
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})
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}
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}
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// Pressure conditions.
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for _, ctype := range []corev1.NodeConditionType{corev1.NodeMemoryPressure, corev1.NodeDiskPressure, corev1.NodePIDPressure} {
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if cond := findNodeCondition(n, ctype); cond != nil {
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if cond.Status == corev1.ConditionTrue {
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out = append(out, model.Issue{
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ID: fmt.Sprintf("k8s:node:%s:%s", n.Name, string(ctype)),
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Category: model.CategoryKubernetes,
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Priority: model.PriorityP1,
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Title: fmt.Sprintf("Node %s: %s", ctype, n.Name),
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Details: cond.Message,
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Evidence: map[string]string{
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"kind": "Node",
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"reason": string(ctype),
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"namespace": "",
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"node": n.Name,
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"status": string(cond.Status),
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},
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SuggestedFix: "kubectl describe node " + n.Name,
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})
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}
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}
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}
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}
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return out
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}
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func findNodeCondition(n *corev1.Node, t corev1.NodeConditionType) *corev1.NodeCondition {
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if n == nil {
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return nil
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}
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for i := range n.Status.Conditions {
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c := &n.Status.Conditions[i]
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if c.Type == t {
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return c
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}
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}
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return nil
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}
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