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https://github.com/rcourtman/Pulse.git
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rcourtman
a0e8896893
Move PBS connectivity and metric evaluation into internal/alerts/pbs.go, and move storage connectivity, usage, and ZFS health evaluation into internal/alerts/storage.go. Keep the Manager API unchanged while recording PBS and storage as resource-checker owners in the alerts subsystem contract, with focused characterization tests for PBS offline normalization and ZFS device labels. Proof: go test ./internal/alerts/...
295 lines
11 KiB
Go
295 lines
11 KiB
Go
package alerts
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import (
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"fmt"
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"strings"
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"time"
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alertspecs "github.com/rcourtman/pulse-go-rewrite/internal/alerts/specs"
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"github.com/rcourtman/pulse-go-rewrite/internal/models"
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"github.com/rcourtman/pulse-go-rewrite/internal/storagehealth"
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"github.com/rcourtman/pulse-go-rewrite/internal/unifiedresources"
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"github.com/rs/zerolog/log"
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)
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// CheckStorage checks storage against thresholds
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func (m *Manager) CheckStorage(storage models.Storage) {
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m.mu.RLock()
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if !m.config.Enabled {
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m.mu.RUnlock()
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return
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}
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if m.config.DisableAllStorage {
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m.mu.RUnlock()
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// Clear any existing storage alerts when all storage alerts are disabled
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m.mu.Lock()
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usageAlertID := canonicalMetricStateID(storage.ID, "usage")
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if m.clearActiveAlertIfPresentNoLock(usageAlertID) {
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log.Info().
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Str("alertID", usageAlertID).
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Str("storage", storage.Name).
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Msg("Cleared usage alert - all storage alerts disabled")
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}
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offlineAlertID := canonicalConnectivityStateID(storage.ID)
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if m.clearActiveAlertIfPresentNoLock(offlineAlertID) {
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log.Info().
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Str("alertID", offlineAlertID).
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Str("storage", storage.Name).
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Msg("Cleared offline alert - all storage alerts disabled")
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}
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m.mu.Unlock()
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return
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}
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thresholds := m.resolveResourceThresholds("storage", storage.ID)
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m.mu.RUnlock()
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if thresholds.Disabled {
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m.mu.Lock()
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delete(m.offlineConfirmations, storage.ID)
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m.mu.Unlock()
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m.clearAlert(canonicalMetricStateID(storage.ID, "usage"))
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m.clearAlert(canonicalConnectivityStateID(storage.ID))
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return
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}
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// Check if storage is truly offline/unavailable (not just inactive from other nodes)
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// Note: In a cluster, local storage from other nodes shows as inactive which is normal
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if thresholds.DisableConnectivity {
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m.mu.Lock()
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delete(m.offlineConfirmations, storage.ID)
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m.mu.Unlock()
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m.clearAlert(canonicalConnectivityStateID(storage.ID))
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} else if storage.Status == "offline" || storage.Status == "unavailable" {
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m.checkStorageOffline(storage)
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} else {
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// Clear any existing offline alert if storage is back online
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m.clearStorageOfflineAlert(storage)
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}
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// Check usage if storage has valid data (even if not currently active on this node)
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// In clusters, storage may show as inactive on nodes where it's not currently mounted
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// but we still want to alert on high usage
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log.Debug().
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Str("storage", storage.Name).
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Str("id", storage.ID).
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Float64("usage", storage.Usage).
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Str("status", storage.Status).
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Float64("trigger", thresholds.Usage.Trigger).
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Float64("clear", thresholds.Usage.Clear).
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Msg("Checking storage thresholds")
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// Check usage if storage is online - checkMetric will skip if threshold is nil or <= 0
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if storage.Status != "offline" && storage.Status != "unavailable" && storage.Usage > 0 {
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m.evaluateUnifiedMetrics(&UnifiedResourceInput{
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ID: storage.ID,
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Type: "storage",
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Name: storage.Name,
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Node: storage.Node,
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Instance: storage.Instance,
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Disk: &UnifiedResourceMetric{Percent: storage.Usage},
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}, thresholds, nil)
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}
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// Check ZFS pool status if this is ZFS storage
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if storage.ZFSPool != nil {
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m.checkZFSPoolHealth(storage)
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}
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}
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// checkZFSPoolHealth checks ZFS pool for errors and degraded state
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func (m *Manager) checkZFSPoolHealth(storage models.Storage) {
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pool := storage.ZFSPool
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if pool == nil {
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return
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}
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poolResourceName := fmt.Sprintf("%s (%s)", storage.Name, pool.Name)
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poolAssessment := storagehealth.AssessZFSPool(*pool)
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// Check pool state (DEGRADED, FAULTED, etc.)
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stateAlertID := fmt.Sprintf("zfs-pool-state-%s", storage.ID)
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stateMetadata := map[string]interface{}{
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"pool_name": pool.Name,
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"pool_state": pool.State,
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}
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stateReasons := filterStorageHealthReasonsByCodes(poolAssessment.Reasons, zfsPoolAssessmentCodes)
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stateResult, _ := m.syncCanonicalHealthAssessmentAlert(canonicalHealthAssessmentAlertParams{
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SpecID: storage.ID + "/zfs-pool:" + sanitizeHostComponent(pool.Name) + "-state",
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Signal: "zfs-pool",
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Codes: zfsPoolAssessmentCodes,
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Reasons: stateReasons,
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AlertID: stateAlertID,
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AlertType: "zfs-pool-state",
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SpecResourceID: storage.ID + "/zfs-pool:" + sanitizeHostComponent(pool.Name),
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ResourceID: storage.ID,
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ResourceName: poolResourceName,
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ResourceType: unifiedresources.ResourceTypeStorage,
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Node: storage.Node,
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Instance: storage.Instance,
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Metadata: stateMetadata,
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})
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if stateResult.Transition != nil && stateResult.Transition.Kind == alertspecs.EvaluationTransitionActivated {
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log.Warn().
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Str("pool", pool.Name).
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Str("state", pool.State).
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Str("node", storage.Node).
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Msg("ZFS pool is not healthy")
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}
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// Check for read/write/checksum errors
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totalErrors := pool.ReadErrors + pool.WriteErrors + pool.ChecksumErrors
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errorsAlertID := fmt.Sprintf("zfs-pool-errors-%s", storage.ID)
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errorsSpecResourceID := storage.ID + "/zfs-pool:" + sanitizeHostComponent(pool.Name)
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errorsSpecID := errorsSpecResourceID + "-errors"
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if totalErrors > 0 {
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existingValue, exists := m.activeAlertValue(buildCanonicalStateID(errorsSpecResourceID, errorsSpecID))
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if !exists || float64(totalErrors) > existingValue {
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errorMetadata := map[string]interface{}{
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"pool_name": pool.Name,
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"read_errors": pool.ReadErrors,
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"write_errors": pool.WriteErrors,
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"checksum_errors": pool.ChecksumErrors,
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}
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errorReasons := filterStorageHealthReasonsByCodes(poolAssessment.Reasons, zfsPoolErrorAssessmentCodes)
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result, _ := m.syncCanonicalHealthAssessmentAlert(canonicalHealthAssessmentAlertParams{
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SpecID: errorsSpecID,
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Signal: "zfs-pool-errors",
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Codes: zfsPoolErrorAssessmentCodes,
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Reasons: errorReasons,
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AlertID: errorsAlertID,
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AlertType: "zfs-pool-errors",
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SpecResourceID: errorsSpecResourceID,
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ResourceID: storage.ID,
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ResourceName: poolResourceName,
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ResourceType: unifiedresources.ResourceTypeStorage,
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Node: storage.Node,
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Instance: storage.Instance,
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Metadata: errorMetadata,
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MessageBuilder: func(result alertspecs.EvaluationResult) (string, float64, float64) {
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return fmt.Sprintf(
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"ZFS pool '%s' has errors: %d read, %d write, %d checksum",
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pool.Name, pool.ReadErrors, pool.WriteErrors, pool.ChecksumErrors,
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), float64(totalErrors), 0
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},
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})
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if result.Transition != nil && result.Transition.Kind == alertspecs.EvaluationTransitionActivated {
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log.Error().
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Str("pool", pool.Name).
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Int64("read_errors", pool.ReadErrors).
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Int64("write_errors", pool.WriteErrors).
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Int64("checksum_errors", pool.ChecksumErrors).
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Str("node", storage.Node).
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Msg("ZFS pool has I/O errors")
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}
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}
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} else {
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m.clearAlert(buildCanonicalStateID(errorsSpecResourceID, errorsSpecID))
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}
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// Check individual devices for errors
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for _, device := range pool.Devices {
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alertID := fmt.Sprintf("zfs-device-%s-%s", storage.ID, device.Name)
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deviceAssessment := zfsDeviceAssessment(device)
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metadata := map[string]interface{}{
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"pool_name": pool.Name,
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"device_name": device.Name,
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"device_state": device.State,
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"read_errors": device.ReadErrors,
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"write_errors": device.WriteErrors,
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"checksum_errors": device.ChecksumErrors,
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}
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result, _ := m.syncCanonicalHealthAssessmentAlert(canonicalHealthAssessmentAlertParams{
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SpecID: storage.ID + "/zfs-pool:" + sanitizeHostComponent(pool.Name) + "/device:" + sanitizeHostComponent(device.Name) + "-health",
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Signal: "zfs-device",
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Codes: zfsDeviceAssessmentCodes,
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Reasons: deviceAssessment.Reasons,
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AlertID: alertID,
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AlertType: "zfs-device",
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SpecResourceID: storage.ID + "/zfs-pool:" + sanitizeHostComponent(pool.Name) + "/device:" + sanitizeHostComponent(device.Name),
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ResourceID: storage.ID,
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ResourceName: formatZFSDeviceResourceName(storage.Name, pool.Name, device.Name),
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ResourceType: unifiedresources.ResourceTypeStorage,
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Node: storage.Node,
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Instance: storage.Instance,
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Metadata: metadata,
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MessageBuilder: func(result alertspecs.EvaluationResult) (string, float64, float64) {
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return strings.Join(storageHealthReasonSummaries(deviceAssessment.Reasons), "; "), float64(device.ReadErrors + device.WriteErrors + device.ChecksumErrors), 0
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},
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})
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if result.Transition != nil && result.Transition.Kind == alertspecs.EvaluationTransitionActivated {
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log.Warn().
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Str("pool", pool.Name).
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Str("device", device.Name).
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Str("state", device.State).
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Int64("errors", device.ReadErrors+device.WriteErrors+device.ChecksumErrors).
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Str("node", storage.Node).
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Msg("ZFS device has issues")
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}
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}
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}
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func formatZFSDeviceResourceName(storageName, poolName, deviceName string) string {
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storageName = strings.TrimSpace(storageName)
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if storageName == "" {
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storageName = "storage"
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}
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parts := make([]string, 0, 2)
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if poolName = strings.TrimSpace(poolName); poolName != "" {
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parts = append(parts, poolName)
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}
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if deviceName = strings.TrimSpace(deviceName); deviceName != "" {
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parts = append(parts, deviceName)
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}
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if len(parts) == 0 {
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return storageName
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}
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return fmt.Sprintf("%s (%s)", storageName, strings.Join(parts, ", "))
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}
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// checkStorageOffline creates an alert for offline/unavailable storage
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func (m *Manager) checkStorageOffline(storage models.Storage) {
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alertID := fmt.Sprintf("storage-offline-%s", storage.ID)
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m.mu.Lock()
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delete(m.offlineRecoveryConfirmations, canonicalConnectivityStateID(storage.ID))
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m.mu.Unlock()
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thresholds := m.resolveResourceThresholds("storage", storage.ID)
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spec, err := buildCanonicalConnectivitySpec(storage.ID, storage.Name, unifiedresources.ResourceTypeStorage, AlertLevelWarning, 2, thresholds.Disabled || thresholds.DisableConnectivity)
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if err != nil {
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log.Warn().
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Err(err).
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Str("storage", storage.Name).
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Str("storageID", storage.ID).
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Msg("Skipping invalid canonical storage connectivity spec")
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return
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}
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_, _ = m.evaluateCanonicalLifecycleAlert(canonicalLifecycleAlertParams{
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Spec: spec,
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Evidence: alertspecs.AlertEvidence{ObservedAt: time.Now(), Connectivity: &alertspecs.ConnectivityEvidence{Signal: "status", Connected: false}},
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Tracking: m.offlineConfirmations,
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TrackingKey: storage.ID,
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AlertID: alertID,
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AlertType: "offline",
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ResourceID: storage.ID,
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ResourceName: storage.Name,
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Node: storage.Node,
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Instance: storage.Instance,
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Message: fmt.Sprintf("Storage %s on node %s is unavailable", storage.Name, storage.Node),
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Metadata: map[string]interface{}{
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"resourceType": "storage",
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"status": storage.Status,
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},
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RateLimit: true,
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DispatchAsync: true,
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})
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}
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// clearStorageOfflineAlert removes offline alert when storage comes back online
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func (m *Manager) clearStorageOfflineAlert(storage models.Storage) {
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m.clearResourceOfflineAlert(storage.ID, storage.Name, storage.Node, "Storage", offlineRecoveryConfirmationsStorage)
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}
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