alert-filter.libsonnet

// Before mapping and changing alerts severity, it is good to keep track on ho they are being categorized upstream!
// There is probably a good reason for why they are categorized the way they are.
local unwatedAlerts = [
  // From Kubernetes
  'KubeStateMetricsListErrors',
  'KubeJobCompletion',
  'KubePodNotReady',
  'AggregatedAPIErrors',
  'CPUThrottlingHigh',
  'KubeProxyDown',


  // From node-exporter
  'NodeFilesystemSpaceFillingUp',
  'NodeHighNumberConntrackEntriesUsed',

  // From kube-prometheus
  'Watchdog',

  // From certmanager
  'CertManagerAbsent',
  'CertManagerCertExpirySoon',
  'CertManagerCertNotReady',
  'CertManagerHittingRateLimits',

  // From kubernetes
  'KubePodCrashLooping',
  'KubeDeploymentGenerationMismatch',
  'KubeDeploymentReplicasMismatch',
  'KubeStatefulSetReplicasMismatch',
  'KubeStatefulSetGenerationMismatch',
  'KubeStatefulSetUpdateNotRolledOut',
  'KubeDaemonSetRolloutStuck',
  'KubeContainerWaiting',
  'KubeDaemonSetNotScheduled',  // Re-added to platform-mixin
  'KubeDaemonSetMisScheduled',
  'KubeJobNotCompleted',  // Re-added to platform-mixin
  'KubeJobFailed',  // Re-added to platform-mixin
  'KubeHpaReplicasMismatch',
  'KubeHpaMaxedOut',
  'KubeCPUOvercommit',  // Re-added to platform-mixin
  'KubeMemoryOvercommit',  // Re-added to platform-mixin
  'KubeCPUQuotaOvercommit',
  'KubeMemoryQuotaOvercommit',
  'KubeQuotaAlmostFull',
  'KubeQuotaFullyUsed',
  'KubeQuotaExceeded',
  'KubePersistentVolumeFillingUp',  // Re-added to platform-mixin
  'KubePersistentVolumeInodesFillingUp',
  'KubePersistentVolumeErrors',  // Re-added to platform-mixin
  'KubeVersionMismatch',  // Re-added to platform-mixin
  'KubeAPIErrorBudgetBurn',
  'KubeClientCertificateExpiration',
  'KubeAggregatedAPIErrors',
  'KubeAggregatedAPIDown',
  'KubeAPIDown',
  'KubeAPITerminatedRequests',
  'KubeNodeNotReady',  // Re-added to platform-mixin
  'KubeNodeUnreachable',
  'KubeletTooManyPods',
  'KubeNodeReadinessFlapping',
  'KubeletPlegDurationHigh',
  'KubeletPodStartUpLatencyHigh',
  'KubeletClientCertificateExpiration',
  'KubeletServerCertificateExpiration',
  'KubeletClientCertificateRenewalErrors',
  'KubeletServerCertificateRenewalErrors',
  'KubeletDown',  // Re-added to platform-mixin
  'KubeClientErrors',

  // From node-exporter
  'NodeFilesystemAlmostOutOfSpace',  // Re-added to platform-mixin
  'NodeFilesystemFilesFillingUp',
  'NodeFilesystemAlmostOutOfFiles',  // Re-added to platform-mixin
  'NodeNetworkReceiveErrs',
  'NodeNetworkTransmitErrs',
  'NodeTextFileCollectorScrapeError',
  'NodeClockSkewDetected',
  'NodeClockNotSynchronising',
  'NodeRAIDDegraded',
  'NodeRAIDDiskFailure',
  'NodeFileDescriptorLimit',

  // From Alertmanager
  'AlertmanagerFailedReload',  // Re-added to platform-mixin
  'AlertmanagerFailedToSendAlerts',  // Re-added to platform-mixin
  'AlertmanagerMembersInconsistent',
  'AlertmanagerClusterFailedToSendAlerts',
  'AlertmanagerConfigInconsistent',
  'AlertmanagerClusterDown',
  'AlertmanagerClusterCrashlooping',


  // From kube-state-metrics
  'KubeStateMetricsWatchErrors',  // Re-added to platform-mixin
  'KubeStateMetricsShardingMismatch',
  'KubeStateMetricsShardsMissing',

  // From prometheus-operator
  'PrometheusOperatorListErrors',  // Re-added to platform-mixin
  'PrometheusOperatorWatchErrors',  // Re-added to platform-mixin
  'PrometheusOperatorReconcileErrors',  // Re-added to platform-mixin
  'PrometheusOperatorNodeLookupErrors',
  'PrometheusOperatorNotReady',
  'ConfigReloaderSidecarErrors',  // Re-added to platform-mixin
  'PrometheusOperatorRejectedResources',
  'PrometheusOperatorSyncFailed',

  // From Prometheus
  'PrometheusBadConfig',  // Re-added to platform-mixin
  'PrometheusNotificationQueueRunningFull',
  'PrometheusErrorSendingAlertsToSomeAlertmanagers',
  'PrometheusNotConnectedToAlertmanagers',
  'PrometheusTSDBReloadsFailing',
  'PrometheusTSDBCompactionsFailing',
  'PrometheusNotIngestingSamples',
  'PrometheusDuplicateTimestamps',
  'PrometheusOutOfOrderTimestamps',
  'PrometheusRemoteStorageFailures',  // Re-added to platform-mixin
  'PrometheusRemoteWriteBehind',
  'PrometheusRemoteWriteDesiredShards',
  'PrometheusRuleFailures',  // Re-added to platform-mixin
  'PrometheusMissingRuleEvaluations',
  'PrometheusTargetLimitHit',
  'PrometheusLabelLimitHit',
  'PrometheusScrapeBodySizeLimitHit',
  'PrometheusScrapeSampleLimitHit',
  'PrometheusTargetSyncFailure',
  'PrometheusHighQueryLoad',
  'PrometheusErrorSendingAlertsToAnyAlertmanager',

];

{
  spec+: {
    groups: std.map(
      function(group) group {
        rules: std.filter(
          function(rule)
            // Here we put what we want to keep. And that is all recording rules
            // and everything that is not unwanted
            'record' in rule || !std.member(unwatedAlerts, rule.alert),
          group.rules
        ),
      },
      super.groups
    ),
  },
}