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README.md

Prometheus Mysql Exporter

TL;DR;

$ helm install stable/prometheus-mysql-exporter

Introduction

This chart bootstraps a prometheus mysql exporter deployment on a Kubernetes cluster using the Helm package manager. The exporter can connect to mysql directly or using the Cloud SQL Proxy.

Installing the Chart

To install the chart with the release name my-release:

$ helm install --name my-release stable/prometheus-mysql-exporter --set datasource="username:password@(db:3306)/"

The command deploys a mysql exporter on the Kubernetes cluster in the default configuration. The configuration section lists the parameters that can be configured during installation.

Uninstalling the Chart

To uninstall/delete the my-release deployment:

$ helm delete my-release

The command removes all the Kubernetes components associated with the chart and deletes the release.

Configuration

The following table lists the configurable parameters of the mysql exporter chart and their default values.

Parameter Description Default
replicaCount Amount of pods for the deployment 1
image.repository Image repository prom/mysqld-exporter
image.tag Image tag v0.11.0
image.pullPolicy Image pull policy IfNotPresent
service.name Service name mysql-exporter
service.type Service type ClusterIP
service.externalport The service port 9104
service.internalPort The target port of the container 9104
resources CPU/Memory resource requests/limits {}
annotations pod annotations for easier discovery {}
mysql.db MySQL connection db (optional) ""
mysql.host MySQL connection host localhost
mysql.param MySQL connection parameters (optional) "tcp"
mysql.pass MySQL connection password password
mysql.port MySQL connection port 3306
mysql.protocol MySQL connection protocol (optional) ""
mysql.user MySQL connection username exporter
cloudsqlproxy.enabled Flag to enable the connection using Cloud SQL Proxy false
cloudsqlproxy.image.repo Cloud SQL Proxy image repository gcr.io/cloudsql-docker/gce-proxy
cloudsqlproxy.image.tag Cloud SQL Proxy image tag 1.11
cloudsqlproxy.image.pullPolicy Cloud SQL Proxy image pull policy IfNotPresent
cloudsqlproxy.instanceConnectionName Google Cloud instance connection name project:us-central1:dbname
cloudsqlproxy.port Cloud SQL Proxy listening port 3306
cloudsqlproxy.credentials Cloud SQL Proxy service account credentials bogus credential file

Specify each parameter using the --set key=value[,key=value] argument to helm install. For example,

$ helm install --name my-release \
  --set mysql.user="username",mysql.password="password",mysql.host="localhost",mysql.port="3306"  \
    stable/prometheus-mysql-exporter

Alternatively, a YAML file that specifies the values for the above parameters can be provided while installing the chart. For example,

$ helm install --name my-release -f values.yaml stable/prometheus-mysql-exporter

Documentation for the MySQL Exporter can be found here: (https://github.com/prometheus/mysqld_exporter) A mysql params overview can be found here: (https://github.com/go-sql-driver/mysql#dsn-data-source-name)