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-rw-r--r--modules/nixos/monitoring/rules/nginx.yaml40
1 files changed, 24 insertions, 16 deletions
diff --git a/modules/nixos/monitoring/rules/nginx.yaml b/modules/nixos/monitoring/rules/nginx.yaml
index 59229a8..f00d372 100644
--- a/modules/nixos/monitoring/rules/nginx.yaml
+++ b/modules/nixos/monitoring/rules/nginx.yaml
@@ -6,47 +6,55 @@ groups:
       - alert: NginxHighHttp4xxErrorRate
         expr: >-
           sum(rate(nginx_http_requests_total{status=~"^4.."}[1m]))
-          / sum(rate(nginx_http_requests_total[1m])) * 100
+          /
+          sum(rate(nginx_http_requests_total[1m])) * 100
           > 5
         for: 1m
         labels:
           severity: critical
         annotations:
-          summary: NGINX high HTTP 4xx error rate (instance {{ $labels.instance }})
+          summary: NGINX high HTTP 4xx error rate at {{ $labels.instance }}.
           description: |-
-            Too many HTTP requests with status 4xx (> 5%).
+            Too many HTTP requests with a 4xx status code.
 
-              VALUE = {{ $value }}
-              LABELS = {{ $labels }}
+            VALUE = {{ $value }}
+            LABELS = {{ $labels }}
 
       - alert: NginxHighHttp5xxErrorRate
         expr: >-
           sum(rate(nginx_http_requests_total{status=~"^5.."}[1m]))
-          / sum(rate(nginx_http_requests_total[1m])) * 100
+          /
+          sum(rate(nginx_http_requests_total[1m])) * 100
           > 5
         for: 1m
         labels:
           severity: critical
         annotations:
-          summary: NGINX high HTTP 5xx error rate (instance {{ $labels.instance }})
+          summary: NGINX high HTTP 5xx error rate at {{ $labels.instance }}.
           description: |-
-            Too many HTTP requests with status 5xx (> 5%).
+            Too many HTTP requests with a 5xx status code.
 
-              VALUE = {{ $value }}
-              LABELS = {{ $labels }}
+            VALUE = {{ $value }}
+            LABELS = {{ $labels }}
 
       - alert: NginxLatencyHigh
         expr: >-
-          histogram_quantile(0.99,
-            sum(rate(nginx_http_request_duration_seconds_bucket[2m])) by (host, node))
+          histogram_quantile(
+            0.99,
+            sum(
+              rate(
+                nginx_http_request_duration_seconds_bucket[2m]
+              )
+            ) by (host, node)
+          )
           > 3
         for: 2m
         labels:
           severity: warning
         annotations:
-          summary: NGINX high latency (instance {{ $labels.instance }})
+          summary: NGINX high latency at {{ $labels.instance }}.
           description: |-
-            NGINX 99% latency is higher than 3 seconds.
+            NGINX 99% of latency spikes is higher than 3 seconds.
 
-              VALUE = {{ $value }}
-              LABELS = {{ $labels }}
+            VALUE = {{ $value }}
+            LABELS = {{ $labels }}

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