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 bitnami/mysql
Introduction
This chart bootstraps a MySQL replication cluster 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 bitnami/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.registry |
MySQL image registry | docker.io |
image.repository |
MySQL Image name | bitnami/mysql |
image.tag |
MySQL Image tag | {VERSION} |
image.pullPolicy |
MySQL image pull policy | Always if imageTag is latest, else IfNotPresent |
image.pullSecrets |
Specify image pull secrets | nil (does not add image pull secrets to deployed pods) |
service.type |
Kubernetes service type | ClusterIP |
service.port |
MySQL service port | 3306 |
root.password |
Password for the root user |
random 10 character alphanumeric string |
db.user |
Username of new user to create | nil |
db.password |
Password for the new user | random 10 character alphanumeric string if db.user is defined |
db.name |
Name for new database to create | my_database |
replication.enabled |
MySQL replication enabled | true |
replication.user |
MySQL replication user | replicator |
replication.password |
MySQL replication user password | random 10 character alphanumeric string |
master.antiAffinity |
Master pod anti-affinity policy | soft |
master.persistence.enabled |
Enable persistence using a PersistentVolumeClaim |
true |
master.persistence.annotations |
Persistent Volume Claim annotations | {} |
master.persistence.storageClass |
Persistent Volume Storage Class | `` |
master.persistence.accessModes |
Persistent Volume Access Modes | [ReadWriteOnce] |
master.persistence.size |
Persistent Volume Size | 8Gi |
master.config |
Config file for the MySQL Master server | _default values in the values.yaml file_ |
master.resources |
CPU/Memory resource requests/limits for master node | {} |
master.livenessProbe.enabled |
Turn on and off liveness probe (master) | true |
master.livenessProbe.initialDelaySeconds |
Delay before liveness probe is initiated (master) | 120 |
master.livenessProbe.periodSeconds |
How often to perform the probe (master) | 10 |
master.livenessProbe.timeoutSeconds |
When the probe times out (master) | 1 |
master.livenessProbe.successThreshold |
Minimum consecutive successes for the probe (master) | 1 |
master.livenessProbe.failureThreshold |
Minimum consecutive failures for the probe (master) | 3 |
master.readinessProbe.enabled |
Turn on and off readiness probe (master) | true |
master.readinessProbe.initialDelaySeconds |
Delay before readiness probe is initiated (master) | 15 |
master.readinessProbe.periodSeconds |
How often to perform the probe (master) | 10 |
master.readinessProbe.timeoutSeconds |
When the probe times out (master) | 1 |
master.readinessProbe.successThreshold |
Minimum consecutive successes for the probe (master) | 1 |
master.readinessProbe.failureThreshold |
Minimum consecutive failures for the probe (master) | 3 |
slave.replicas |
Desired number of slave replicas | 1 |
slave.antiAffinity |
Slave pod anti-affinity policy | soft |
slave.persistence.enabled |
Enable persistence using a PersistentVolumeClaim |
true |
slave.persistence.annotations |
Persistent Volume Claim annotations | {} |
slave.persistence.storageClass |
Persistent Volume Storage Class | `` |
slave.persistence.accessModes |
Persistent Volume Access Modes | [ReadWriteOnce] |
slave.persistence.size |
Persistent Volume Size | 8Gi |
slave.config |
Config file for the MySQL Slave replicas | _default values in the values.yaml file_ |
slave.resources |
CPU/Memory resource requests/limits for slave node | {} |
slave.livenessProbe.enabled |
Turn on and off liveness probe (slave) | true |
slave.livenessProbe.initialDelaySeconds |
Delay before liveness probe is initiated (slave) | 120 |
slave.livenessProbe.periodSeconds |
How often to perform the probe (slave) | 10 |
slave.livenessProbe.timeoutSeconds |
When the probe times out (slave) | 1 |
slave.livenessProbe.successThreshold |
Minimum consecutive successes for the probe (slave) | 1 |
slave.livenessProbe.failureThreshold |
Minimum consecutive failures for the probe (slave) | 3 |
slave.readinessProbe.enabled |
Turn on and off readiness probe (slave) | true |
slave.readinessProbe.initialDelaySeconds |
Delay before readiness probe is initiated (slave) | 15 |
slave.readinessProbe.periodSeconds |
How often to perform the probe (slave) | 10 |
slave.readinessProbe.timeoutSeconds |
When the probe times out (slave) | 1 |
slave.readinessProbe.successThreshold |
Minimum consecutive successes for the probe (slave) | 1 |
slave.readinessProbe.failureThreshold |
Minimum consecutive failures for the probe (slave) | 3 |
metrics.enabled |
Start a side-car prometheus exporter | false |
metrics.image |
Exporter image name | prom/mysqld-exporter |
metrics.imageTag |
Exporter image tag | v0.10.0 |
metrics.imagePullPolicy |
Exporter image pull policy | IfNotPresent |
metrics.resources |
Exporter resource requests/limit | 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 root.password=secretpassword,user.database=app_database \
bitnami/mysql
The above command sets the MySQL root account password to secretpassword. Additionally it creates a database named app_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 bitnami/mysql
Tip
: You can use the default values.yaml
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 by default. An existing PersistentVolumeClaim can be defined.