Bug 1821268
| Summary: | Thanos Ruler should send alerts to all Alertmanager pods | ||
|---|---|---|---|
| Product: | OpenShift Container Platform | Reporter: | Simon Pasquier <spasquie> |
| Component: | Monitoring | Assignee: | Simon Pasquier <spasquie> |
| Status: | CLOSED ERRATA | QA Contact: | Junqi Zhao <juzhao> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | low | ||
| Version: | 4.5 | CC: | alegrand, anpicker, erooth, kakkoyun, lcosic, mloibl, pkrupa, surbania |
| Target Milestone: | --- | ||
| Target Release: | 4.5.0 | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | No Doc Update | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2020-07-13 17:25:34 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Tested with 4.5.0-0.nightly-2020-04-21-233210, followed the steps in Comment 0, The "Drill" alert is present for every Alertmanager # for i in {0,1,2}; do echo "alertmanager-main-$i"; oc exec -n openshift-monitoring -t alertmanager-main-$i -c alertmanager -- curl -s http://localhost:9093/api/v2/alerts | jq -r '.[].labels.alertname'; echo -e "\n"; done alertmanager-main-0 AlertmanagerReceiversNotConfigured Drill CustomResourceDetected KubePodCrashLooping KubeDeploymentReplicasMismatch Watchdog alertmanager-main-1 AlertmanagerReceiversNotConfigured Drill CustomResourceDetected KubePodCrashLooping KubeDeploymentReplicasMismatch Watchdog alertmanager-main-2 AlertmanagerReceiversNotConfigured Drill CustomResourceDetected KubePodCrashLooping KubeDeploymentReplicasMismatch Watchdog Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2020:2409 |
Description of problem: Thanos Ruler sends alerts to the Alertmanager service (alertmanager-main.openshift-monitoring.svc) instead of all Alertmanager pods. This might that each Alertmanager will get an incomplete view of the alerts depending which . Version-Release number of selected component (if applicable): 4.5 How reproducible: Always Steps to Reproduce: 1. Enable user workload monitoring. 2. Create a user alert that always fires. *** apiVersion: monitoring.coreos.com/v1 kind: PrometheusRule metadata: name: test namespace: default spec: groups: - name: Test rules rules: - alert: Drill expr: vector(1) labels: severity: warning *** 3.Query each Alertmanager for the list of active alerts for i in {0,1,2}; do echo "alertmanager-main-$i"; oc exec -n openshift-monitoring -t alertmanager-main-$i -c alertmanager -- curl -s http://localhost:9093/api/v2/alerts | jq -r '.[].labels.alertname'; done Actual results: alertmanager-main-0 AlertmanagerReceiversNotConfigured Watchdog Drill alertmanager-main-1 AlertmanagerReceiversNotConfigured Watchdog Drill alertmanager-main-2 AlertmanagerReceiversNotConfigured Watchdog Expected results: The "Drill" alert should be present for every Alertmanager. Additional info: Right now Thanos Ruler is configured with to with "alertmanager-main.openshift-monitoring.svc:9094". It needs to be "dnssrv+_web._tcp.alertmanager-operated.openshift-monitoring.svc" instead. But for this to work, a first fix is needed in prometheus-operator.