[00:02:41] FIRING: [103x] PrometheusRuleEvaluationFailures: Prometheus rule evaluation failures (instance titan1001:17902) - https://wikitech.wikimedia.org/wiki/Prometheus - https://grafana.wikimedia.org/d/GWvEXWDZk/prometheus-server?var-datasource=eqiad%20prometheus%2Fops - https://alerts.wikimedia.org/?q=alertname%3DPrometheusRuleEvaluationFailures [00:02:51] FIRING: ThanosRuleHighRuleEvaluationFailures: Thanos Rule is failing to evaluate rules. - https://wikitech.wikimedia.org/wiki/Thanos#Alerts - https://grafana.wikimedia.org/d/35da848f5f92b2dc612e0c3a0577b8a1/thanos-rule - https://alerts.wikimedia.org/?q=alertname%3DThanosRuleHighRuleEvaluationFailures [00:07:41] RESOLVED: [247x] PrometheusRuleEvaluationFailures: Prometheus rule evaluation failures (instance titan1001:17902) - https://wikitech.wikimedia.org/wiki/Prometheus - https://alerts.wikimedia.org/?q=alertname%3DPrometheusRuleEvaluationFailures [00:07:51] RESOLVED: ThanosRuleHighRuleEvaluationFailures: Thanos Rule is failing to evaluate rules. - https://wikitech.wikimedia.org/wiki/Thanos#Alerts - https://grafana.wikimedia.org/d/35da848f5f92b2dc612e0c3a0577b8a1/thanos-rule - https://alerts.wikimedia.org/?q=alertname%3DThanosRuleHighRuleEvaluationFailures [00:14:41] FIRING: [227x] PrometheusRuleEvaluationFailures: Prometheus rule evaluation failures (instance titan1001:17902) - https://wikitech.wikimedia.org/wiki/Prometheus - https://alerts.wikimedia.org/?q=alertname%3DPrometheusRuleEvaluationFailures [00:14:51] FIRING: [2x] ThanosRuleHighRuleEvaluationFailures: Thanos Rule is failing to evaluate rules. - https://wikitech.wikimedia.org/wiki/Thanos#Alerts - https://grafana.wikimedia.org/d/35da848f5f92b2dc612e0c3a0577b8a1/thanos-rule - https://alerts.wikimedia.org/?q=alertname%3DThanosRuleHighRuleEvaluationFailures [00:19:41] RESOLVED: [260x] PrometheusRuleEvaluationFailures: Prometheus rule evaluation failures (instance titan1001:17902) - https://wikitech.wikimedia.org/wiki/Prometheus - https://alerts.wikimedia.org/?q=alertname%3DPrometheusRuleEvaluationFailures [00:19:51] RESOLVED: [2x] ThanosRuleHighRuleEvaluationFailures: Thanos Rule is failing to evaluate rules. - https://wikitech.wikimedia.org/wiki/Thanos#Alerts - https://grafana.wikimedia.org/d/35da848f5f92b2dc612e0c3a0577b8a1/thanos-rule - https://alerts.wikimedia.org/?q=alertname%3DThanosRuleHighRuleEvaluationFailures [00:38:41] FIRING: [124x] PrometheusRuleEvaluationFailures: Prometheus rule evaluation failures (instance titan1001:17902) - https://wikitech.wikimedia.org/wiki/Prometheus - https://alerts.wikimedia.org/?q=alertname%3DPrometheusRuleEvaluationFailures [00:38:51] FIRING: ThanosRuleHighRuleEvaluationFailures: Thanos Rule is failing to evaluate rules. - https://wikitech.wikimedia.org/wiki/Thanos#Alerts - https://grafana.wikimedia.org/d/35da848f5f92b2dc612e0c3a0577b8a1/thanos-rule - https://alerts.wikimedia.org/?q=alertname%3DThanosRuleHighRuleEvaluationFailures [00:43:41] RESOLVED: [260x] PrometheusRuleEvaluationFailures: Prometheus rule evaluation failures (instance titan1001:17902) - https://wikitech.wikimedia.org/wiki/Prometheus - https://alerts.wikimedia.org/?q=alertname%3DPrometheusRuleEvaluationFailures [00:43:51] FIRING: [2x] ThanosRuleHighRuleEvaluationFailures: Thanos Rule is failing to evaluate rules. - https://wikitech.wikimedia.org/wiki/Thanos#Alerts - https://grafana.wikimedia.org/d/35da848f5f92b2dc612e0c3a0577b8a1/thanos-rule - https://alerts.wikimedia.org/?q=alertname%3DThanosRuleHighRuleEvaluationFailures [00:44:07] FIRING: [2x] ThanosRuleHighRuleEvaluationFailures: Thanos Rule is failing to evaluate rules. - https://wikitech.wikimedia.org/wiki/Thanos#Alerts - https://grafana.wikimedia.org/d/35da848f5f92b2dc612e0c3a0577b8a1/thanos-rule - https://alerts.wikimedia.org/?q=alertname%3DThanosRuleHighRuleEvaluationFailures [00:48:51] RESOLVED: [2x] ThanosRuleHighRuleEvaluationFailures: Thanos Rule is failing to evaluate rules. - https://wikitech.wikimedia.org/wiki/Thanos#Alerts - https://grafana.wikimedia.org/d/35da848f5f92b2dc612e0c3a0577b8a1/thanos-rule - https://alerts.wikimedia.org/?q=alertname%3DThanosRuleHighRuleEvaluationFailures [17:59:24] FIRING: SystemdUnitFailed: statograph_post.service on alert1002:9100 - https://wikitech.wikimedia.org/wiki/Monitoring/check_systemd_state - https://grafana.wikimedia.org/d/g-AaZRFWk/systemd-status - https://alerts.wikimedia.org/?q=alertname%3DSystemdUnitFailed [18:00:46] ^^ see #operations [18:04:24] RESOLVED: SystemdUnitFailed: statograph_post.service on alert1002:9100 - https://wikitech.wikimedia.org/wiki/Monitoring/check_systemd_state - https://grafana.wikimedia.org/d/g-AaZRFWk/systemd-status - https://alerts.wikimedia.org/?q=alertname%3DSystemdUnitFailed [18:20:07] hello o11y friends, so I'm looking at the query logs on titan1001, and I see a bunch of 30d duration queries coming in from grafana in the 17:54 minute. [18:20:21] that's also the first minute with probe failures [18:21:32] these also happen to touch metrics with fairly high cardinality (e.g., envoy metrics), though I'm not sure to what degree that has an effect on query performance / resources [18:23:09] so yeah, a string suspicious that it's these, but I am clearly no thanos expert [18:23:25] is there anything that requires follow-up here? [18:24:10] wow, I cannot type today ... "string suspicious" (??) to "strong suspicion" [19:50:49] FIRING: ThanosQueryInstantLatencyHigh: Thanos Query Frontend has high latency for queries. - https://wikitech.wikimedia.org/wiki/Thanos#Alerts - https://grafana.wikimedia.org/d/aa7Rx0oMk/thanos-query-frontend - https://alerts.wikimedia.org/?q=alertname%3DThanosQueryInstantLatencyHigh [19:55:49] RESOLVED: ThanosQueryInstantLatencyHigh: Thanos Query Frontend has high latency for queries. - https://wikitech.wikimedia.org/wiki/Thanos#Alerts - https://grafana.wikimedia.org/d/aa7Rx0oMk/thanos-query-frontend - https://alerts.wikimedia.org/?q=alertname%3DThanosQueryInstantLatencyHigh