From 5d8f911d975c86dfaa3f73390c6939c46843f9f8 Mon Sep 17 00:00:00 2001
From: luhellma <lucas.hellmann@uca.fr>
Date: Wed, 25 Mar 2020 11:57:29 +0100
Subject: [PATCH 1/2] feat: Add new rules for MySQLd_exporter from prometheus

---
 _data/rules.yml | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/_data/rules.yml b/_data/rules.yml
index 38dae95..764144c 100644
--- a/_data/rules.yml
+++ b/_data/rules.yml
@@ -301,6 +301,22 @@ groups:
           - name: prometheus/mysqld_exporter
             doc_url: https://github.com/prometheus/mysqld_exporter
             rules:
+              - name: MySQL down
+                description: MySQL down on {{ $labels.instance }}
+                query: 'mysql_up == 0'
+                severity: error            
+              - name: MySQL connections number is high
+                description: MySQL connections numbers approach the maximum number of connexion possible : more than 80% of connection are in use on {{ $labels.instance }}
+                query: '(mysql_global_status_threads_connected / mysql_global_variables_max_connections) * 100 > 80'
+                severity: error
+              - name: MySQL slow query count
+                description: MySQL server is having some slow query. The count is higher than 0 on {{ $labels.instance }}
+                query: 'rate(mysql_global_status_slow_queries[5m]) > 0'
+                severity: warning                
+              - name: MySQL restart
+                description: MySQL has just been restarted, less than one minute ago on {{ $labels.instance }}.
+                query: 'mysql_global_status_uptime < 60'
+                severity: warning
 
       - name: PostgreSQL
         exporters:

From 5559e0140b047c7afb3142307ea6442cb5de9b70 Mon Sep 17 00:00:00 2001
From: luhellma <lucas.hellmann@uca.fr>
Date: Wed, 25 Mar 2020 16:34:04 +0100
Subject: [PATCH 2/2] fix: double usage in query and alert configuration

---
 _data/rules.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/_data/rules.yml b/_data/rules.yml
index 764144c..db81abb 100644
--- a/_data/rules.yml
+++ b/_data/rules.yml
@@ -311,7 +311,7 @@ groups:
                 severity: error
               - name: MySQL slow query count
                 description: MySQL server is having some slow query. The count is higher than 0 on {{ $labels.instance }}
-                query: 'rate(mysql_global_status_slow_queries[5m]) > 0'
+                query: '(mysql_global_status_slow_queries > 0'
                 severity: warning                
               - name: MySQL restart
                 description: MySQL has just been restarted, less than one minute ago on {{ $labels.instance }}.