MySQL MySQL is a fast, reliable, scalable, and easy to use open-source relational database system. MySQL Server is intended for mission-critical, heavy-load production systems as well as for embedding into mass-deployed software.

TL;DR;

$ helm install incubator/mysql

Introduction

This chart bootstraps a MySQL deployment on a Kubernetes cluster using the Helm package manager.

Prerequisites

Kubernetes 1.4+ with Beta APIs enabled
PV provisioner support in the underlying infrastructure

Installing the Chart

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

$ helm install --name my-release incubator/mysql

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

Tip

: List all releases using helm list

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 tables lists the configurable parameters of the MySQL chart and their default values.

Parameter	Description	Default
`image`	MySQL image	`bitnami/mysql:{VERSION}`
`imagePullPolicy`	Image pull policy.	`IfNotPresent`
`mysqlRootPassword`	Password for the `root` user.	`nil`
`mysqlUser`	Username of new user to create.	`nil`
`mysqlPassword`	Password for the new user.	`nil`
`mysqlDatabase`	Name for new database to create.	`nil`
`persistence.enabled`	Use a PVC to persist data	`true`
`persistence.storageClass`	Storage class of backing PVC	`nil` (uses alpha storage class annotation)
`persistence.accessMode`	Use volume as ReadOnly or ReadWrite	`ReadWriteOnce`
`persistence.size`	Size of data volume	`8Gi`
`resources`	CPU/Memory resource requests/limits	Memory: `256Mi`, CPU: `250m`
`config`	Multi-line string for my.cnf configuration	`nil`

The above parameters map to the env variables defined in bitnami/mysql. For more information please refer to the bitnami/mysql image documentation.

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

$ helm install --name my-release \
  --set mysqlRootPassword=secretpassword,mysqlUser=my-user,mysqlPassword=my-password,mysqlDatabase=my-database \
    incubator/mysql

The above command sets the MySQL root account password to secretpassword. Additionally it creates a standard database user named my-user, with the password my-password, who has access to a database named my-database.

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

$ helm install --name my-release -f values.yaml incubator/mysql

Tip

: You can use the default values.yaml

Custom my.cnf configuration

The Bitnami MySQL image allows you to provide a custom my.cnf file for configuring MySQL. This Chart uses the config value to mount a custom my.cnf using a ConfigMap. You can configure this by creating a YAML file that defines the config property as a multi-line string in the format of a my.cnf file. For example:

cat > mysql-values.yaml <<EOF
config: |-
  [mysqld]
  max_allowed_packet = 64M
  sql_mode=STRICT_ALL_TABLES
  ft_stopword_file=/etc/mysql/stopwords.txt
  ft_min_word_len=3
  ft_boolean_syntax=' |-><()~*:""&^'
  innodb_buffer_pool_size=2G
EOF

helm install --name my-release -f mysql-values.yaml incubator/mysql

Persistence

The Bitnami MySQL image stores the MySQL data and configurations at the /bitnami/mysql path of the container.

The chart mounts a Persistent Volume volume at this location. The volume is created using dynamic volume provisioning.