mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
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vmalert: do not send message to alertmanager when alert has no label … (#6823)
…pair `alert_relabel_configs` in [notifier config](https://docs.victoriametrics.com/vmalert/#notifier-configuration-file) can drop alert labels when used to filter different tenant alert message to different notifier. alertmanager would report error like `msg="Failed to validate alerts" err="at least one label pair required"` in this case, but the rest of the alerts inside one request would still be valid in alertmanager, so it's not severe.
This commit is contained in:
Hui Wang
GitHub
parent
f9a8c09fe8
commit
ae4d376e41
7 changed files with 135 additions and 76 deletions
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@ -187,7 +187,7 @@ func templateAnnotation(dst io.Writer, text string, data tplData, tmpl *textTpl.
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return nil
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}
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func (a Alert) toPromLabels(relabelCfg *promrelabel.ParsedConfigs) []prompbmarshal.Label {
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func (a Alert) applyRelabelingIfNeeded(relabelCfg *promrelabel.ParsedConfigs) []prompbmarshal.Label {
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var labels []prompbmarshal.Label
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for k, v := range a.Labels {
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labels = append(labels, prompbmarshal.Label{
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@ -187,7 +187,7 @@ func TestAlert_toPromLabels(t *testing.T) {
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fn := func(labels map[string]string, exp []prompbmarshal.Label, relabel *promrelabel.ParsedConfigs) {
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t.Helper()
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a := Alert{Labels: labels}
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got := a.toPromLabels(relabel)
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got := a.applyRelabelingIfNeeded(relabel)
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if !reflect.DeepEqual(got, exp) {
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t.Fatalf("expected to have: \n%v;\ngot:\n%v",
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exp, got)
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@ -8,6 +8,8 @@
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{% func amRequest(alerts []Alert, generatorURL func(Alert) string, relabelCfg *promrelabel.ParsedConfigs) %}
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[
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{% for i, alert := range alerts %}
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{% code lbls := alert.applyRelabelingIfNeeded(relabelCfg) %}
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{% if len(lbls) == 0 %} {% continue %} {% endif %}
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{
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"startsAt":{%q= alert.Start.Format(time.RFC3339Nano) %},
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"generatorURL": {%q= generatorURL(alert) %},
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@ -15,7 +17,6 @@
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"endsAt":{%q= alert.End.Format(time.RFC3339Nano) %},
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{% endif %}
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"labels": {
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{% code lbls := alert.toPromLabels(relabelCfg) %}
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{% code ll := len(lbls) %}
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{% for idx, l := range lbls %}
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{%q= l.Name %}:{%q= l.Value %}{% if idx != ll-1 %}, {% endif %}
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@ -30,111 +30,117 @@ func streamamRequest(qw422016 *qt422016.Writer, alerts []Alert, generatorURL fun
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qw422016.N().S(`[`)
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//line app/vmalert/notifier/alertmanager_request.qtpl:10
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for i, alert := range alerts {
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//line app/vmalert/notifier/alertmanager_request.qtpl:10
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qw422016.N().S(`{"startsAt":`)
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//line app/vmalert/notifier/alertmanager_request.qtpl:12
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qw422016.N().Q(alert.Start.Format(time.RFC3339Nano))
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//line app/vmalert/notifier/alertmanager_request.qtpl:12
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qw422016.N().S(`,"generatorURL":`)
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//line app/vmalert/notifier/alertmanager_request.qtpl:13
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qw422016.N().Q(generatorURL(alert))
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//line app/vmalert/notifier/alertmanager_request.qtpl:13
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qw422016.N().S(`,`)
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//line app/vmalert/notifier/alertmanager_request.qtpl:14
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if !alert.End.IsZero() {
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//line app/vmalert/notifier/alertmanager_request.qtpl:14
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qw422016.N().S(`"endsAt":`)
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//line app/vmalert/notifier/alertmanager_request.qtpl:15
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qw422016.N().Q(alert.End.Format(time.RFC3339Nano))
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//line app/vmalert/notifier/alertmanager_request.qtpl:15
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qw422016.N().S(`,`)
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//line app/vmalert/notifier/alertmanager_request.qtpl:16
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}
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//line app/vmalert/notifier/alertmanager_request.qtpl:16
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qw422016.N().S(`"labels": {`)
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//line app/vmalert/notifier/alertmanager_request.qtpl:18
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lbls := alert.toPromLabels(relabelCfg)
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//line app/vmalert/notifier/alertmanager_request.qtpl:11
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lbls := alert.applyRelabelingIfNeeded(relabelCfg)
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//line app/vmalert/notifier/alertmanager_request.qtpl:19
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//line app/vmalert/notifier/alertmanager_request.qtpl:12
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if len(lbls) == 0 {
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//line app/vmalert/notifier/alertmanager_request.qtpl:12
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continue
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//line app/vmalert/notifier/alertmanager_request.qtpl:12
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}
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//line app/vmalert/notifier/alertmanager_request.qtpl:12
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qw422016.N().S(`{"startsAt":`)
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//line app/vmalert/notifier/alertmanager_request.qtpl:14
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qw422016.N().Q(alert.Start.Format(time.RFC3339Nano))
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//line app/vmalert/notifier/alertmanager_request.qtpl:14
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qw422016.N().S(`,"generatorURL":`)
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//line app/vmalert/notifier/alertmanager_request.qtpl:15
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qw422016.N().Q(generatorURL(alert))
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//line app/vmalert/notifier/alertmanager_request.qtpl:15
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qw422016.N().S(`,`)
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//line app/vmalert/notifier/alertmanager_request.qtpl:16
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if !alert.End.IsZero() {
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//line app/vmalert/notifier/alertmanager_request.qtpl:16
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qw422016.N().S(`"endsAt":`)
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//line app/vmalert/notifier/alertmanager_request.qtpl:17
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qw422016.N().Q(alert.End.Format(time.RFC3339Nano))
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//line app/vmalert/notifier/alertmanager_request.qtpl:17
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qw422016.N().S(`,`)
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//line app/vmalert/notifier/alertmanager_request.qtpl:18
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}
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//line app/vmalert/notifier/alertmanager_request.qtpl:18
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qw422016.N().S(`"labels": {`)
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//line app/vmalert/notifier/alertmanager_request.qtpl:20
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ll := len(lbls)
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//line app/vmalert/notifier/alertmanager_request.qtpl:20
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//line app/vmalert/notifier/alertmanager_request.qtpl:21
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for idx, l := range lbls {
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//line app/vmalert/notifier/alertmanager_request.qtpl:21
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//line app/vmalert/notifier/alertmanager_request.qtpl:22
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qw422016.N().Q(l.Name)
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//line app/vmalert/notifier/alertmanager_request.qtpl:21
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//line app/vmalert/notifier/alertmanager_request.qtpl:22
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qw422016.N().S(`:`)
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//line app/vmalert/notifier/alertmanager_request.qtpl:21
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//line app/vmalert/notifier/alertmanager_request.qtpl:22
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qw422016.N().Q(l.Value)
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//line app/vmalert/notifier/alertmanager_request.qtpl:21
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//line app/vmalert/notifier/alertmanager_request.qtpl:22
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if idx != ll-1 {
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//line app/vmalert/notifier/alertmanager_request.qtpl:21
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//line app/vmalert/notifier/alertmanager_request.qtpl:22
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qw422016.N().S(`,`)
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//line app/vmalert/notifier/alertmanager_request.qtpl:21
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//line app/vmalert/notifier/alertmanager_request.qtpl:22
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}
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//line app/vmalert/notifier/alertmanager_request.qtpl:22
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//line app/vmalert/notifier/alertmanager_request.qtpl:23
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}
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//line app/vmalert/notifier/alertmanager_request.qtpl:22
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//line app/vmalert/notifier/alertmanager_request.qtpl:23
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qw422016.N().S(`},"annotations": {`)
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//line app/vmalert/notifier/alertmanager_request.qtpl:25
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//line app/vmalert/notifier/alertmanager_request.qtpl:26
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c := len(alert.Annotations)
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//line app/vmalert/notifier/alertmanager_request.qtpl:26
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for k, v := range alert.Annotations {
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//line app/vmalert/notifier/alertmanager_request.qtpl:27
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for k, v := range alert.Annotations {
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//line app/vmalert/notifier/alertmanager_request.qtpl:28
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c = c - 1
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//line app/vmalert/notifier/alertmanager_request.qtpl:28
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//line app/vmalert/notifier/alertmanager_request.qtpl:29
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qw422016.N().Q(k)
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//line app/vmalert/notifier/alertmanager_request.qtpl:28
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//line app/vmalert/notifier/alertmanager_request.qtpl:29
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qw422016.N().S(`:`)
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//line app/vmalert/notifier/alertmanager_request.qtpl:28
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//line app/vmalert/notifier/alertmanager_request.qtpl:29
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qw422016.N().Q(v)
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//line app/vmalert/notifier/alertmanager_request.qtpl:28
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//line app/vmalert/notifier/alertmanager_request.qtpl:29
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if c > 0 {
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//line app/vmalert/notifier/alertmanager_request.qtpl:28
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//line app/vmalert/notifier/alertmanager_request.qtpl:29
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qw422016.N().S(`,`)
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//line app/vmalert/notifier/alertmanager_request.qtpl:28
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//line app/vmalert/notifier/alertmanager_request.qtpl:29
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}
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//line app/vmalert/notifier/alertmanager_request.qtpl:29
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//line app/vmalert/notifier/alertmanager_request.qtpl:30
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}
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//line app/vmalert/notifier/alertmanager_request.qtpl:29
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//line app/vmalert/notifier/alertmanager_request.qtpl:30
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qw422016.N().S(`}}`)
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//line app/vmalert/notifier/alertmanager_request.qtpl:32
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//line app/vmalert/notifier/alertmanager_request.qtpl:33
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if i != len(alerts)-1 {
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//line app/vmalert/notifier/alertmanager_request.qtpl:32
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//line app/vmalert/notifier/alertmanager_request.qtpl:33
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qw422016.N().S(`,`)
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//line app/vmalert/notifier/alertmanager_request.qtpl:32
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//line app/vmalert/notifier/alertmanager_request.qtpl:33
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}
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//line app/vmalert/notifier/alertmanager_request.qtpl:33
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//line app/vmalert/notifier/alertmanager_request.qtpl:34
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}
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//line app/vmalert/notifier/alertmanager_request.qtpl:33
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//line app/vmalert/notifier/alertmanager_request.qtpl:34
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qw422016.N().S(`]`)
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//line app/vmalert/notifier/alertmanager_request.qtpl:35
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//line app/vmalert/notifier/alertmanager_request.qtpl:36
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}
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//line app/vmalert/notifier/alertmanager_request.qtpl:35
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//line app/vmalert/notifier/alertmanager_request.qtpl:36
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func writeamRequest(qq422016 qtio422016.Writer, alerts []Alert, generatorURL func(Alert) string, relabelCfg *promrelabel.ParsedConfigs) {
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//line app/vmalert/notifier/alertmanager_request.qtpl:35
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//line app/vmalert/notifier/alertmanager_request.qtpl:36
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qw422016 := qt422016.AcquireWriter(qq422016)
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//line app/vmalert/notifier/alertmanager_request.qtpl:35
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//line app/vmalert/notifier/alertmanager_request.qtpl:36
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streamamRequest(qw422016, alerts, generatorURL, relabelCfg)
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//line app/vmalert/notifier/alertmanager_request.qtpl:35
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//line app/vmalert/notifier/alertmanager_request.qtpl:36
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qt422016.ReleaseWriter(qw422016)
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//line app/vmalert/notifier/alertmanager_request.qtpl:35
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//line app/vmalert/notifier/alertmanager_request.qtpl:36
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}
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//line app/vmalert/notifier/alertmanager_request.qtpl:35
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//line app/vmalert/notifier/alertmanager_request.qtpl:36
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func amRequest(alerts []Alert, generatorURL func(Alert) string, relabelCfg *promrelabel.ParsedConfigs) string {
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//line app/vmalert/notifier/alertmanager_request.qtpl:35
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//line app/vmalert/notifier/alertmanager_request.qtpl:36
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qb422016 := qt422016.AcquireByteBuffer()
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//line app/vmalert/notifier/alertmanager_request.qtpl:35
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//line app/vmalert/notifier/alertmanager_request.qtpl:36
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writeamRequest(qb422016, alerts, generatorURL, relabelCfg)
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//line app/vmalert/notifier/alertmanager_request.qtpl:35
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//line app/vmalert/notifier/alertmanager_request.qtpl:36
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qs422016 := string(qb422016.B)
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//line app/vmalert/notifier/alertmanager_request.qtpl:35
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//line app/vmalert/notifier/alertmanager_request.qtpl:36
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qt422016.ReleaseByteBuffer(qb422016)
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//line app/vmalert/notifier/alertmanager_request.qtpl:35
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//line app/vmalert/notifier/alertmanager_request.qtpl:36
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return qs422016
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//line app/vmalert/notifier/alertmanager_request.qtpl:35
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//line app/vmalert/notifier/alertmanager_request.qtpl:36
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}
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@ -11,6 +11,7 @@ import (
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"time"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/promauth"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/promrelabel"
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)
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func TestAlertManager_Addr(t *testing.T) {
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@ -76,12 +77,33 @@ func TestAlertManager_Send(t *testing.T) {
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if a[0].EndAt.IsZero() {
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t.Fatalf("expected non-zero end time")
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}
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if len(a[0].Labels) != 1 {
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t.Fatalf("expected 1 labels got %d", len(a[0].Labels))
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}
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if len(a[0].Annotations) != 2 {
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t.Fatalf("expected 2 annotations got %d", len(a[0].Annotations))
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}
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if r.Header.Get(headerKey) != "bar" {
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t.Fatalf("expected header %q to be set to %q; got %q instead", headerKey, headerValue, r.Header.Get(headerKey))
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}
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case 3:
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if r.Header.Get(headerKey) != headerValue {
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t.Fatalf("expected header %q to be set to %q; got %q instead", headerKey, headerValue, r.Header.Get(headerKey))
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var a []struct {
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Labels map[string]string `json:"labels"`
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}
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if err := json.NewDecoder(r.Body).Decode(&a); err != nil {
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t.Fatalf("can not unmarshal data into alert %s", err)
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}
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if len(a) != 1 {
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t.Fatalf("expected 1 alert in array got %d", len(a))
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}
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if len(a[0].Labels) != 3 {
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t.Fatalf("expected 3 labels got %d", len(a[0].Labels))
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}
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if a[0].Labels["env"] != "prod" {
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t.Fatalf("expected env label to be prod during relabeling, got %s", a[0].Labels["env"])
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}
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if r.Header.Get(headerKey) != "bar" {
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t.Fatalf("expected header %q to be set to %q; got %q instead", headerKey, "bar", r.Header.Get(headerKey))
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}
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}
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})
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@ -95,31 +117,58 @@ func TestAlertManager_Send(t *testing.T) {
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},
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Headers: []string{fmt.Sprintf("%s:%s", headerKey, headerValue)},
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}
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parsedConfigs, err := promrelabel.ParseRelabelConfigsData([]byte(`
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- action: drop
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if: '{tenant="0"}'
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regex: ".*"
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- target_label: "env"
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replacement: "prod"
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if: '{tenant="1"}'
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`))
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if err != nil {
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t.Fatalf("unexpected error when parse relabeling config: %s", err)
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}
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am, err := NewAlertManager(srv.URL+alertManagerPath, func(alert Alert) string {
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return strconv.FormatUint(alert.GroupID, 10) + "/" + strconv.FormatUint(alert.ID, 10)
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}, aCfg, nil, 0)
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}, aCfg, parsedConfigs, 0)
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if err != nil {
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t.Fatalf("unexpected error: %s", err)
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}
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if err := am.Send(context.Background(), []Alert{{}, {}}, nil); err == nil {
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if err := am.Send(context.Background(), []Alert{{Labels: map[string]string{"a": "b"}}}, nil); err == nil {
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t.Fatalf("expected connection error got nil")
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}
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if err := am.Send(context.Background(), []Alert{}, nil); err == nil {
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if err := am.Send(context.Background(), []Alert{{Labels: map[string]string{"a": "b"}}}, nil); err == nil {
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t.Fatalf("expected wrong http code error got nil")
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}
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if err := am.Send(context.Background(), []Alert{{
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GroupID: 0,
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Name: "alert0",
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Start: time.Now().UTC(),
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End: time.Now().UTC(),
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Annotations: map[string]string{"a": "b", "c": "d", "e": "f"},
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Labels: map[string]string{"alertname": "alert0"},
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Annotations: map[string]string{"a": "b", "c": "d"},
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}}, map[string]string{headerKey: "bar"}); err != nil {
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t.Fatalf("unexpected error %s", err)
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}
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if c != 2 {
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t.Fatalf("expected 2 calls(count from zero) to server got %d", c)
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}
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if err := am.Send(context.Background(), nil, map[string]string{headerKey: headerValue}); err != nil {
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if err := am.Send(context.Background(), []Alert{
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// drop tenant0 alert message during relabeling
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{
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Name: "alert1",
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Labels: map[string]string{"rule": "test", "tenant": "0"},
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},
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{
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Name: "alert2",
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Labels: map[string]string{"rule": "test", "tenant": "1"},
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},
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}, map[string]string{headerKey: "bar"}); err != nil {
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t.Fatalf("unexpected error %s", err)
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}
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if c != 3 {
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t.Fatalf("expected 3 calls(count from zero) to server got %d", c)
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}
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}
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@ -35,6 +35,8 @@ See also [LTS releases](https://docs.victoriametrics.com/lts-releases/).
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* BUGFIX: [Single-node VictoriaMetrics](https://docs.victoriametrics.com/) and `vmstorage` in [VictoriaMetrics cluster](https://docs.victoriametrics.com/cluster-victoriametrics/): fix metric `vm_object_references{type="indexdb"}`. Previously, it was overcounted.
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* BUGFIX: [Single-node VictoriaMetrics](https://docs.victoriametrics.com/) and `vmstorage` in [VictoriaMetrics cluster](https://docs.victoriametrics.com/cluster-victoriametrics/): properly ingest stale NaN samples. Previously it could be dropped if series didn't exist at storage node. See this issue [https://github.com/VictoriaMetrics/VictoriaMetrics/issues/5069] for details.
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* BUGFIX: [vmalert](https://docs.victoriametrics.com/vmalert): do not send notifications without labels to Alertmanager. Such notifications are rejected by Alertmanager anyway. Before, vmalert could send alert notifications even if no label-value pairs left after applying `alert_relabel_configs` from [notifier config](https://docs.victoriametrics.com/vmalert/#notifier-configuration-file).
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## [v1.103.0](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.103.0)
|
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|
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Released at 2024-08-28
|
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|
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@ -198,6 +198,7 @@ headers:
|
|||
# Optional list of HTTP headers in form `header-name: value`
|
||||
# applied for all alert notifications sent to notifiers
|
||||
# generated by rules of this group.
|
||||
# It has higher priority over headers defined in notifier config.
|
||||
# For example:
|
||||
# notifier_headers:
|
||||
# - "TenantID: foo"
|
||||
|
|
|
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