From 18f6c45a5f2ac8f40fc88e86c20a8888bf76973a Mon Sep 17 00:00:00 2001
From: asdf1234 <lirulei@users.noreply.github.com>
Date: Sat, 30 Nov 2024 09:09:21 +0800
Subject: [PATCH 1/2] Update mysqld-exporter.yml

add some rules
---
 dist/rules/mysql/mysqld-exporter.yml | 45 ++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/dist/rules/mysql/mysqld-exporter.yml b/dist/rules/mysql/mysqld-exporter.yml
index 380fca3b1..a9bdff858 100644
--- a/dist/rules/mysql/mysqld-exporter.yml
+++ b/dist/rules/mysql/mysqld-exporter.yml
@@ -93,3 +93,48 @@ groups:
       annotations:
         summary: MySQL restarted (instance {{ $labels.instance }})
         description: "MySQL has just been restarted, less than one minute ago on {{ $labels.instance }}.\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"
+
+    - alert: Mysql_High_QPS
+      expr: 'irate(mysql_global_status_questions[1m]) > 10000'
+      for: 2m
+      labels:
+        severity: info
+      annotations:
+        summary: Mysql_High_QPS (instance {{ $labels.instance }})
+        description: "Mysql_High_QPS on {{ $labels.instance }}.\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"
+
+    - alert: MySQL too many open files
+      expr: 'mysql_global_status_innodb_num_open_files / mysql_global_variables_open_files_limit * 100 > 75'
+      for: 2m
+      labels:
+        severity: warning
+      annotations:
+        summary: MySQL too many Open files  (instance {{ $labels.instance }})
+        description: "MySQL too many Open files,please conside increase variables open_files_limit  {{ $labels.instance }}.\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"
+
+    - alert: MySQL too many connections
+      expr: 'sum by(instance) (mysql_info_schema_processes_by_host) / sum by(instance) (mysql_global_variables_max_connections) * 100 > 80'
+      for: 2m
+      labels:
+        severity: warning
+      annotations:
+        summary: MySQL too many connections  (instance {{ $labels.instance }})
+        description: "MySQL too many connections,current connections is more than 80%  {{ $labels.instance }}.\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"
+
+    - alert: MySQL InnoDB Force Recovery is enabled
+      expr: 'mysql_global_variables_innodb_force_recovery != 0'
+      for: 2m
+      labels:
+        severity: warning
+      annotations:
+        summary: MySQL InnoDB Force Recovery is enabled (instance {{ $labels.instance }})
+        description: "MySQL InnoDB Force Recovery not equal 0  {{ $labels.instance }}.\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"
+
+    - alert: MySQL InnoDB history_len too long
+      expr: 'mysql_info_schema_innodb_metrics_transaction_trx_rseg_history_len > 50000'
+      for: 2m
+      labels:
+        severity: warning
+      annotations:
+        summary: MySQL history_len (undo log) too long (instance {{ $labels.instance }})
+        description: "MySQL  history_len (undo log) too long   {{ $labels.instance }}.\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

From aa84f3ac957e2231755976a4f1a499b918df10b6 Mon Sep 17 00:00:00 2001
From: Samuel Berthe <dev@samuel-berthe.fr>
Date: Sat, 30 Nov 2024 10:23:47 +0100
Subject: [PATCH 2/2] Add new MySQL monitoring rules

---
 _data/rules.yml | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/_data/rules.yml b/_data/rules.yml
index f05d28916..cf744c7cb 100644
--- a/_data/rules.yml
+++ b/_data/rules.yml
@@ -628,6 +628,26 @@ groups:
                 description: MySQL has just been restarted, less than one minute ago on {{ $labels.instance }}.
                 query: "mysql_global_status_uptime < 60"
                 severity: info
+              - name: MySQL High QPS
+                description: MySQL is being overload with unusual QPS (> 10k QPS).
+                query: "irate(mysql_global_status_questions[1m]) > 10000"
+                severity: info
+                for: 2m
+              - name: MySQL too many open files
+                description: MySQL has too many open files, consider increase variables open_files_limit on {{ $labels.instance }}.
+                query: "mysql_global_status_innodb_num_open_files / mysql_global_variables_open_files_limit * 100 > 75"
+                severity: warning
+                for: 2m
+              - name: MySQL InnoDB Force Recovery is enabled
+                description: "MySQL InnoDB force recovery is enabled on {{ $labels.instance }}"
+                query: "mysql_global_variables_innodb_force_recovery != 0"
+                severity: warning
+                for: 2m
+              - name: MySQL InnoDB history_len too long
+                description: "MySQL history_len (undo log) too long on {{ $labels.instance }}"
+                query: "mysql_info_schema_innodb_metrics_transaction_trx_rseg_history_len > 50000"
+                severity: warning
+                for: 2m
 
       - name: PostgreSQL
         exporters: