From 450b6c160db9f802c35df2c153fd008f8a3924fe Mon Sep 17 00:00:00 2001
From: Tobias Manske <mail@tobiasmanske.de>
Date: Sat, 13 Jan 2024 00:09:45 +0100
Subject: [PATCH] Adjust prometheus rules to leave time for backups

---
 ansible/plays/services/mimir/rules/cadvisor.yaml | 16 ++++++++--------
 ansible/plays/services/mimir/rules/node.yaml     |  4 ++--
 2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/ansible/plays/services/mimir/rules/cadvisor.yaml b/ansible/plays/services/mimir/rules/cadvisor.yaml
index 4e4512c..6525097 100644
--- a/ansible/plays/services/mimir/rules/cadvisor.yaml
+++ b/ansible/plays/services/mimir/rules/cadvisor.yaml
@@ -35,14 +35,14 @@ groups:
       annotations:
         summary: Container Memory usage (instance {{ $labels.instance }})
         description: "Container Memory usage is above 80%\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"
-    # - alert: ContainerVolumeUsage
-    #   expr: '(1 - (sum(container_fs_inodes_free{name!=""}) BY (instance) / sum(container_fs_inodes_total) BY (instance))) * 100 > 80'
-    #   for: 2m
-    #   labels:
-    #     severity: warning
-    #   annotations:
-    #     summary: Container Volume usage (instance {{ $labels.instance }})
-    #     description: "Container Volume usage is above 80%\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"
+    - alert: ContainerVolumeUsage
+      expr: '(1 - (sum(container_fs_inodes_free{name!=""}) BY (instance) / sum(container_fs_inodes_total) BY (instance))) * 100 > 80'
+      for: 2m
+      labels:
+        severity: warning
+      annotations:
+        summary: Container Volume usage (instance {{ $labels.instance }})
+        description: "Container Volume usage is above 80%\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"
     - alert: ContainerHighThrottleRate
       expr: 'rate(container_cpu_cfs_throttled_seconds_total[3m]) > 1'
       for: 2m
diff --git a/ansible/plays/services/mimir/rules/node.yaml b/ansible/plays/services/mimir/rules/node.yaml
index b2822d6..677648b 100644
--- a/ansible/plays/services/mimir/rules/node.yaml
+++ b/ansible/plays/services/mimir/rules/node.yaml
@@ -12,7 +12,7 @@ groups:
         summary: Host out of memory (instance {{ $labels.instance }})
         description: "Node memory is filling up (< 10% left)\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"
     - alert: HostMemoryUnderMemoryPressure
-      expr: 'rate(node_vmstat_pgmajfault[1m]) > 1000'
+      expr: 'rate(node_vmstat_pgmajfault[1m]) > 1000 unless on() hour()>=0 <=3'
       for: 2m
       labels:
         severity: warning
@@ -108,7 +108,7 @@ groups:
         summary: Host unusual disk write latency (instance {{ $labels.instance }})
         description: "Disk latency is growing (write operations > 100ms)\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"
     - alert: HostHighCpuLoad
-      expr: '(100 - (avg by(instance) (rate(node_cpu_seconds_total{mode="idle"}[2m])) * 100)) > 80'
+      expr: '(100 - (avg by(instance) (rate(node_cpu_seconds_total{mode="idle"}[2m])) * 100)) > 80 unless on() hour()>=0 <=3'
       for: 2m
       labels:
         severity: warning