update mariadb to fix slave readniess probe issue

charts/mariadb/latest/Chart.yaml

 name: mariadb
-version: 4.4.2
+version: 5.0.9
 appVersion: 10.1.36
 description: Fast, reliable, scalable, and easy to use open-source relational database system. MariaDB Server is intended for mission-critical, heavy-load production systems as well as for embedding into mass-deployed software. Highly available MariaDB cluster.
 keywords:

charts/mariadb/latest/README.md

@@ -14,6 +14,7 @@ The following table lists the configurable parameters of the MariaDB chart and t
 | `image.pullPolicy`                        | MariaDB 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.clusterIp`                       | Specific cluster IP when service type is cluster IP. Use None for headless service | `nil`                                                                  |
 | `service.port`                            | MySQL service port                                  | `3306`                                                             |
 | `rootUser.password`                       | Password for the `root` user                        | _random 10 character alphanumeric string_                         |
 | `rootUser.forcePassword`                  | Force users to specify a password                   | `false`                                                           |
@@ -23,6 +24,8 @@ The following table lists the configurable parameters of the MariaDB chart and t
 | `replication.enabled`                     | MariaDB replication enabled                         | `true`                                                             |
 | `replication.user`                        | MariaDB replication user                            | `replicator`                                                       |
 | `replication.password`                    | MariaDB replication user password                   | _random 10 character alphanumeric string_                         |
+| `master.annotations[].key`                | key for the the annotation list item                |  `nil`                                                  |
+| `master.annotations[].value`              | value for the the annotation list item              |  `nil`                                                  |
 | `master.affinity`                         | Master affinity (in addition to master.antiAffinity when set)  | `{}`                                                   |
 | `master.antiAffinity`                     | Master pod anti-affinity policy                     | `soft`                                                            |
 | `master.tolerations`                      | List of node taints to tolerate (master)            | `[]`                                                              |
@@ -42,12 +45,14 @@ The following table lists the configurable parameters of the MariaDB chart and t
 | `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.initialDelaySeconds`| Delay before readiness probe is initiated (master) | `30`                                                              |
 | `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.annotations[].key`                 | key for the the annotation list item                | `nil`                                                   |
+| `slave.annotations[].value`               | value for the the annotation list item              | `nil`                                                   |
 | `slave.affinity`                          | Slave affinity (in addition to slave.antiAffinity when set) | `{}`                                                      |
 | `slave.antiAffinity`                      | Slave pod anti-affinity policy                      | `soft`                                                            |
 | `slave.tolerations`                       | List of node taints to tolerate for (slave)         | `[]`                                                              |
@@ -65,7 +70,7 @@ The following table lists the configurable parameters of the MariaDB chart and t
 | `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.initialDelaySeconds`| Delay before readiness probe is initiated (slave)   | `45`                                                              |
 | `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`                                                               |
@@ -108,3 +113,22 @@ The allowed extensions are `.sh`, `.sql` and `.sql.gz`.
 The [Bitnami MariaDB](https://github.com/bitnami/bitnami-docker-mariadb) image stores the MariaDB data and configurations at the `/bitnami/mariadb` path of the container.
 
 The chart mounts a [Persistent Volume](kubernetes.io/docs/user-guide/persistent-volumes/) volume at this location. The volume is created using dynamic volume provisioning, by default. An existing PersistentVolumeClaim can be defined.
+
+## Upgrading
+
+It's necessary to set the `rootUser.password` parameter when upgrading for readiness/liveness probes to work properly. When you install this chart for the first time, some notes will be displayed providing the credentials you must use under the 'Administrator credentials' section. Please note down the password and run the command below to upgrade your chart:
+
+```bash
+$ helm upgrade my-release stable/mariadb --set rootUser.password=[ROOT_PASSWORD]
+```
+
+| Note: you need to substitue the placeholder _[ROOT_PASSWORD]_ with the value obtained in the installation notes.
+
+### To 5.0.0
+
+Backwards compatibility is not guaranteed unless you modify the labels used on the chart's deployments.
+Use the workaround below to upgrade from versions previous to 5.0.0. The following example assumes that the release name is mariadb:
+
+```console
+$ kubectl delete statefulset opencart-mariadb --cascade=false
+```

charts/mariadb/latest/templates/NOTES.txt

@@ -17,7 +17,7 @@ Administrator credentials:
   Username: root
   Password : $(kubectl get secret --namespace {{ .Release.Namespace }} {{ template "mariadb.fullname" . }} -o jsonpath="{.data.mariadb-root-password}" | base64 --decode)
 
-To connect to your database
+To connect to your database:
 
   1. Run a pod that you can use as a client:
 
@@ -33,3 +33,10 @@ To connect to your database
 
       mysql -h {{ template "slave.fullname" . }}.{{ .Release.Namespace }}.svc.cluster.local -uroot -p {{ .Values.db.name }}
 {{- end }}
+
+To upgrade this helm chart:
+
+  1. Obtain the password as described on the 'Administrator credentials' section and set the 'rootUser.password' parameter as shown below:
+
+      ROOT_PASSWORD=$(kubectl get secret --namespace {{ .Release.Namespace }} {{ template "mariadb.fullname" . }} -o jsonpath="{.data.mariadb-root-password}" | base64 --decode)
+      helm upgrade {{ .Release.Name }} stable/mariadb --set rootUser.password=$ROOT_PASSWORD

charts/mariadb/latest/templates/master-statefulset.yaml

@@ -9,12 +9,23 @@ metadata:
     release: {{ .Release.Name | quote }}
     heritage: {{ .Release.Service | quote }}
 spec:
+  selector:
+    matchLabels:
+      release: "{{ .Release.Name }}"
+      component: "master"
+      app: {{ template "mariadb.name" . }}
   serviceName: "{{ template "master.fullname" . }}"
   replicas: 1
   updateStrategy:
     type: RollingUpdate
   template:
     metadata:
+      {{- if .Values.master.annotations }}
+      annotations:
+        {{- range .Values.master.annotations }}
+        {{ .key }}: '{{ .value }}'
+        {{- end }}
+      {{- end }}
       labels:
         app: "{{ template "mariadb.name" . }}"
         component: "master"
@@ -186,7 +197,6 @@ spec:
         name: data
         labels:
           app: "{{ template "mariadb.name" . }}"
-          chart: {{ template "mariadb.chart" . }}
           component: "master"
           release: {{ .Release.Name | quote }}
           heritage: {{ .Release.Service | quote }}

charts/mariadb/latest/templates/master-svc.yaml

@@ -14,6 +14,11 @@ metadata:
 {{- end }}
 spec:
   type: {{ .Values.service.type }}
+  {{- if eq .Values.service.type "ClusterIP" }}
+  {{- if .Values.service.clusterIp }}
+  clusterIP: {{ .Values.service.clusterIp }}
+  {{- end }}
+  {{- end }}
   ports:
   - name: mysql
     port: {{ .Values.service.port }}

charts/mariadb/latest/templates/slave-statefulset.yaml

@@ -10,12 +10,23 @@ metadata:
     release: {{ .Release.Name | quote }}
     heritage: {{ .Release.Service | quote }}
 spec:
+  selector:
+    matchLabels:
+      release: "{{ .Release.Name }}"
+      component: "slave"
+      app: {{ template "mariadb.name" . }}
   serviceName: "{{ template "slave.fullname" . }}"
   replicas: {{ .Values.slave.replicas }}
   updateStrategy:
     type: RollingUpdate
   template:
     metadata:
+      {{- if .Values.slave.annotations }}
+      annotations:
+        {{- range .Values.slave.annotations }}
+        {{ .key }}: '{{ .value }}'
+        {{- end }}
+      {{- end }}
       labels:
         app: "{{ template "mariadb.name" . }}"
         component: "slave"
@@ -72,31 +83,15 @@ spec:
         image: {{ template "mariadb.image" . }}
         imagePullPolicy: {{ .Values.image.pullPolicy | quote }}
         env:
-        - name: MARIADB_ROOT_PASSWORD
-          valueFrom:
-            secretKeyRef:
-              name: {{ template "mariadb.fullname" . }}
-              key: mariadb-root-password
-        {{- if .Values.db.user }}
-        - name: MARIADB_USER
-          value: "{{ .Values.db.user }}"
-        - name: MARIADB_PASSWORD
-          valueFrom:
-            secretKeyRef:
-              name: {{ template "mariadb.fullname" . }}
-              key: mariadb-password
-        {{- end }}
-        - name: MARIADB_DATABASE
-          value: "{{ .Values.db.name }}"
         - name: MARIADB_REPLICATION_MODE
           value: "slave"
         - name: MARIADB_MASTER_HOST
           value: {{ template "mariadb.fullname" . }}
-        - name: MARIADB_MASTER_PORT
+        - name: MARIADB_MASTER_PORT_NUMBER
           value: "3306"
-        - name: MARIADB_MASTER_USER
+        - name: MARIADB_MASTER_ROOT_USER
           value: "root"
-        - name: MARIADB_MASTER_PASSWORD
+        - name: MARIADB_MASTER_ROOT_PASSWORD
           valueFrom:
             secretKeyRef:
               name: {{ template "mariadb.fullname" . }}
@@ -114,7 +109,7 @@ spec:
         {{- if .Values.slave.livenessProbe.enabled }}
         livenessProbe:
           exec:
-            command: ["sh", "-c", "exec mysqladmin status -uroot -p$MARIADB_ROOT_PASSWORD"]
+            command: ["sh", "-c", "exec mysqladmin status -uroot -p$MARIADB_MASTER_ROOT_PASSWORD"]
           initialDelaySeconds: {{ .Values.slave.livenessProbe.initialDelaySeconds }}
           periodSeconds: {{ .Values.slave.livenessProbe.periodSeconds }}
           timeoutSeconds: {{ .Values.slave.livenessProbe.timeoutSeconds }}
@@ -124,7 +119,7 @@ spec:
         {{- if .Values.slave.readinessProbe.enabled }}
         readinessProbe:
           exec:
-            command: ["sh", "-c", "exec mysqladmin status -uroot -p$MARIADB_ROOT_PASSWORD"]
+            command: ["sh", "-c", "exec mysqladmin status -uroot -p$MARIADB_MASTER_ROOT_PASSWORD"]
           initialDelaySeconds: {{ .Values.slave.readinessProbe.initialDelaySeconds }}
           periodSeconds: {{ .Values.slave.readinessProbe.periodSeconds }}
           timeoutSeconds: {{ .Values.slave.readinessProbe.timeoutSeconds }}
@@ -146,12 +141,12 @@ spec:
         image: {{ template "metrics.image" . }}
         imagePullPolicy: {{ .Values.metrics.image.pullPolicy | quote }}
         env:
-        - name: MARIADB_ROOT_PASSWORD
+        - name: MARIADB_MASTER_ROOT_PASSWORD
           valueFrom:
             secretKeyRef:
               name: {{ template "mariadb.fullname" . }}
               key: mariadb-root-password
-        command: [ 'sh', '-c', 'DATA_SOURCE_NAME="root:$MARIADB_ROOT_PASSWORD@(localhost:3306)/" /bin/mysqld_exporter' ]
+        command: [ 'sh', '-c', 'DATA_SOURCE_NAME="root:$MARIADB_MASTER_ROOT_PASSWORD@(localhost:3306)/" /bin/mysqld_exporter' ]
         ports:
         - name: metrics
           containerPort: 9104
@@ -182,7 +177,6 @@ spec:
         name: data
         labels:
           app: "{{ template "mariadb.name" . }}"
-          chart: {{ template "mariadb.chart" . }}
           component: "slave"
           release: {{ .Release.Name | quote }}
           heritage: {{ .Release.Service | quote }}

charts/mariadb/latest/templates/slave-svc.yaml

@@ -15,6 +15,11 @@ metadata:
 {{- end }}
 spec:
   type: {{ .Values.service.type }}
+  {{- if eq .Values.service.type "ClusterIP" }}
+  {{- if .Values.service.clusterIp }}
+  clusterIP: {{ .Values.service.clusterIp }}
+  {{- end }}
+  {{- end }}
   ports:
   - name: mysql
     port: {{ .Values.service.port }}

charts/mariadb/latest/values-production.yaml

@@ -20,6 +20,7 @@ image:
 service:
   ## Kubernetes service type, ClusterIP and NodePort are supported at present
   type: ClusterIP
+  # clusterIp: None
   port: 3306
   ## Specify the nodePort value for the LoadBalancer and NodePort service types.
   ## ref: https://kubernetes.io/docs/concepts/services-networking/service/#type-nodeport
@@ -75,6 +76,12 @@ replication:
   forcePassword: true
 
 master:
+  ## Mariadb Master additional pod annotations
+  ## ref: https://kubernetes.io/docs/concepts/overview/working-with-objects/annotations/
+  # annotations:
+  #   - key: key1
+  #     value: value1
+
   ## Affinity for pod assignment
   ## Ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
   ##
@@ -176,6 +183,13 @@ master:
 slave:
   replicas: 2
 
+
+  ## Mariadb Slave additional pod annotations
+  ## ref: https://kubernetes.io/docs/concepts/overview/working-with-objects/annotations/
+  # annotations:
+  #   - key: key1
+  #     value: value1
+
   ## Affinity for pod assignment
   ## Ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
   ##

charts/mariadb/latest/values.yaml

@@ -20,6 +20,7 @@ image:
 service:
   ## Kubernetes service type, ClusterIP and NodePort are supported at present
   type: ClusterIP
+  # clusterIp: None
   port: 3306
   ## Specify the nodePort value for the LoadBalancer and NodePort service types.
   ## ref: https://kubernetes.io/docs/concepts/services-networking/service/#type-nodeport
@@ -75,6 +76,12 @@ replication:
   forcePassword: false
 
 master:
+  ## Mariadb Master additional pod annotations
+  ## ref: https://kubernetes.io/docs/concepts/overview/working-with-objects/annotations/
+  # annotations:
+  #   - key: key1
+  #     value: value1
+
   ## Affinity for pod assignment
   ## Ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
   ##
@@ -165,7 +172,7 @@ master:
     failureThreshold: 3
   readinessProbe:
     enabled: true
-    initialDelaySeconds: 15
+    initialDelaySeconds: 30
     ##
     ## Default Kubernetes values
     periodSeconds: 10
@@ -176,6 +183,12 @@ master:
 slave:
   replicas: 2
 
+  ## Mariadb Slave additional pod annotations
+  ## ref: https://kubernetes.io/docs/concepts/overview/working-with-objects/annotations/
+  # annotations:
+  #   - key: key1
+  #     value: value1
+
   ## Affinity for pod assignment
   ## Ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
   ##
@@ -250,7 +263,7 @@ slave:
     failureThreshold: 3
   readinessProbe:
     enabled: true
-    initialDelaySeconds: 15
+    initialDelaySeconds: 45
     ##
     ## Default Kubernetes values
     periodSeconds: 10

charts/mariadb/v4.4.2/.helmignore

+.git

charts/mariadb/v4.4.2/Chart.yaml

+name: mariadb
+version: 4.4.2
+appVersion: 10.1.36
+description: Fast, reliable, scalable, and easy to use open-source relational database system. MariaDB Server is intended for mission-critical, heavy-load production systems as well as for embedding into mass-deployed software. Highly available MariaDB cluster.
+keywords:
+- mariadb
+- mysql
+- database
+- sql
+- prometheus
+home: https://mariadb.org
+icon: https://bitnami.com/assets/stacks/mariadb/img/mariadb-stack-220x234.png
+sources:
+- https://github.com/bitnami/bitnami-docker-mariadb
+- https://github.com/prometheus/mysqld_exporter
+maintainers:
+- name: bitnami-bot
+  email: containers@bitnami.com
+engine: gotpl

charts/mariadb/v4.4.2/OWNERS

+approvers:
+- prydonius
+- tompizmor
+- sameersbn
+- carrodher
+- juan131
+reviewers:
+- prydonius
+- tompizmor
+- sameersbn
+- carrodher
+- juan131

charts/mariadb/v4.4.2/app-readme.md

+# MariaDB
+
+[MariaDB](https://mariadb.org) is one of the most popular database servers in the world. It’s made by the original developers of MySQL and guaranteed to stay open source. Notable users include Wikipedia, Facebook and Google.
+
+MariaDB is developed as open source software and as a relational database it provides an SQL interface for accessing data. The latest versions of MariaDB also include GIS and JSON features.

charts/mariadb/v4.4.2/files/docker-entrypoint-initdb.d/README.md

+You can copy here your custom .sh, .sql or .sql.gz file so they are executed during the first boot of the image.
+
+More info in the [bitnami-docker-mariadb](https://github.com/bitnami/bitnami-docker-mariadb#initializing-a-new-instance) repository.
\ No newline at end of file

charts/mariadb/v4.4.2/questions.yml

+categories:
+- Database
+- MySQL
+questions:
+- variable: defaultImage
+  default: "true"
+  description: "Use default Docker image"
+  label: Use Default Image
+  type: boolean
+  show_subquestion_if: false
+  group: "Container Images"
+  subquestions:
+  - variable: image.repository
+    default: "bitnami/mariadb"
+    description: "Docker image name"
+    type: string
+    label: MariaDB Image Name
+  - variable: image.tag
+    default: "10.1.36-debian-9"
+    description: "Docker image tag"
+    type: string
+    label: MariaDB Image Tag
+  - variable: metrics.image
+    default: "prom/mysqld-exporter"
+    description: "image name for metrics"
+    type: string
+    label: Metrics Image Name
+    show_if: "metrics.enabled=true"
+  - variable: metrics.imageTag
+    default: "v0.10.0"
+    description: "image tag for metrics"
+    type: string
+    label: Metrics Image Tag
+    show_if: "metrics.enabled=true"
+- variable: db.user
+  default: "admin"
+  description: "Username of new user to create."
+  type: string
+  label: MariaDB Database User
+  required: true
+  group: "Master Settings"
+- variable: db.password
+  default: "admin"
+  description: "Password for the new user, defaults to a random 10-character alphanumeric string if not set"
+  type: password
+  label: MariaDB Database Password
+  group: "Master Settings"
+- variable: db.name
+  default: "my_database"
+  description: "Name of database to create"
+  type: string
+  label: MariaDB Database Name
+  required: true
+  group: "Master Settings"
+- variable: master.persistence.enabled
+  default: false
+  description: "Enable persistent volume for MariaDB Master Pod"
+  type: boolean
+  required: true
+  label: Enable Persistent Volume for MariaDB Master Pod
+  show_subquestion_if: true
+  group: "Master Settings"
+  subquestions:
+  - variable: master.persistence.size
+    default: "8Gi"
+    description: "MariaDB Persistent Volume Size"
+    type: string
+    label: MariaDB Volume Size
+    required: true
+  - variable: master.persistence.storageClass
+    default: ""
+    description: "If undefined or  null, uses the default StorageClass. Defaults to null."
+    type: storageclass
+    label: Storage Class for MariaDB
+- variable: replication.enabled
+  default: true
+  description: "Enable MariaDB Replication"
+  type: boolean
+  required: true
+  label: Enable MariaDB Replication 
+  group: "Replica Settings"
+  show_subquestion_if: true
+  subquestions:
+  - variable: slave.replicas
+    default: "2"
+    description: "Desired number of slave replicas"
+    type: int
+    required: true
+    label: MariaDB Replica Count 
+    show_subquestion_if: true
+    group: "Replica Settings"
+    min: 1
+    max: 5
+  - variable: slave.persistence.enabled
+    default: false
+    description: "Enable persistent volume for MariaDB Slave"
+    type: boolean
+    required: true
+    label: Enable Persistent Volume for MariaDB Slave
+    show_subquestion_if: true
+    subquestions:
+  - variable: slave.persistence.size
+    default: "8Gi"
+    description: "MariaDB Slave Persistent Volume Size"
+    type: string
+    label: MariaDB Slave Volume Size
+    required: true
+    show_if: "slave.persistence.enabled=true"
+  - variable: slave.persistence.storageClass
+    default: ""
+    description: "If undefined or  null, uses the default StorageClass. Defaults to null."
+    type: storageclass
+    label: Storage Class for MariaDB Slave
+    show_if: "slave.persistence.enabled=true"
+- variable: service.type
+  default: "NodePort"
+  description: "MariaDB K8s Service type"
+  type: enum
+  options:
+    - "ClusterIP"
+    - "NodePort"
+  required: true
+  label: MariaDB Service Type
+  show_subquestion_if: "NodePort"
+  group: "Services and Load Balancing"
+  subquestions:
+  - variable: service.nodePort.master
+    default: ""
+    description: "NodePort port number(to set explicitly, choose port between 30000-32767)"
+    type: int
+    min: 30000
+    max: 32767
+    label: Service NodePort number
+  - variable: service.nodePort.slave
+    default: ""
+    description: "NodePort port number(to set explicitly, choose port between 30000-32767)"
+    type: int
+    min: 30000
+    max: 32767
+    label: Service NodePort number
+- variable: metrics.enabled
+  default: false
+  description: "Start a side-car prometheus exporter"
+  type: boolean
+  required: true
+  label: Enable Metrics
+  group: "Metrics Settings"

charts/mariadb/v4.4.2/templates/NOTES.txt

+
+Please be patient while the chart is being deployed
+
+Tip:
+
+  Watch the deployment status using the command: kubectl get pods -w --namespace {{ .Release.Namespace }} -l release={{ .Release.Name }}
+
+Services:
+
+  echo Master: {{ template "mariadb.fullname" . }}.{{ .Release.Namespace }}.svc.cluster.local:{{ .Values.service.port }}
+{{- if .Values.replication.enabled }}
+  echo Slave:  {{ template "slave.fullname" . }}.{{ .Release.Namespace }}.svc.cluster.local:{{ .Values.service.port }}
+{{- end }}
+
+Administrator credentials:
+
+  Username: root
+  Password : $(kubectl get secret --namespace {{ .Release.Namespace }} {{ template "mariadb.fullname" . }} -o jsonpath="{.data.mariadb-root-password}" | base64 --decode)
+
+To connect to your database
+
+  1. Run a pod that you can use as a client:
+
+      kubectl run {{ template "mariadb.fullname" . }}-client --rm --tty -i --image  {{ template "mariadb.image" . }} --namespace {{ .Release.Namespace }} --command -- bash
+
+  2. To connect to master service (read/write):
+
+      mysql -h {{ template "mariadb.fullname" . }}.{{ .Release.Namespace }}.svc.cluster.local -uroot -p {{ .Values.db.name }}
+
+{{- if .Values.replication.enabled }}
+
+  3. To connect to slave service (read-only):
+
+      mysql -h {{ template "slave.fullname" . }}.{{ .Release.Namespace }}.svc.cluster.local -uroot -p {{ .Values.db.name }}
+{{- end }}

charts/mariadb/v4.4.2/templates/_helpers.tpl

+{{/* vim: set filetype=mustache: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "mariadb.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+*/}}
+{{- define "mariadb.fullname" -}}
+{{- $name := default .Chart.Name .Values.nameOverride -}}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{- define "master.fullname" -}}
+{{- if .Values.replication.enabled -}}
+{{- printf "%s-%s" .Release.Name "mariadb-master" | trunc 63 | trimSuffix "-" -}}
+{{- else -}}
+{{- printf "%s-%s" .Release.Name "mariadb" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+{{- end -}}
+
+
+{{- define "slave.fullname" -}}
+{{- printf "%s-%s" .Release.Name "mariadb-slave" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{- define "mariadb.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/*
+Return the proper image name
+*/}}
+{{- define "mariadb.image" -}}
+{{- $registryName :=  .Values.image.registry -}}
+{{- $repositoryName := .Values.image.repository -}}
+{{- $tag := .Values.image.tag | toString -}}
+{{- printf "%s/%s:%s" $registryName $repositoryName $tag -}}
+{{- end -}}
+
+{{/*
+Return the proper image name
+*/}}
+{{- define "metrics.image" -}}
+{{- $registryName :=  .Values.metrics.image.registry -}}
+{{- $repositoryName := .Values.metrics.image.repository -}}
+{{- $tag := .Values.metrics.image.tag | toString -}}
+{{- printf "%s/%s:%s" $registryName $repositoryName $tag -}}
+{{- end -}}

charts/mariadb/v4.4.2/templates/initialization-configmap.yaml

+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ template "master.fullname" . }}-init-scripts
+  labels:
+    app: {{ template "mariadb.name" . }}
+    component: "master"
+    chart: {{ template "mariadb.chart" . }}
+    release: {{ .Release.Name | quote }}
+    heritage: {{ .Release.Service | quote }}
+data:
+{{ (.Files.Glob "files/docker-entrypoint-initdb.d/*").AsConfig | indent 2 }}

charts/mariadb/v4.4.2/templates/master-configmap.yaml

+{{- if .Values.master.config }}
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ template "master.fullname" . }}
+  labels:
+    app: {{ template "mariadb.name" . }}
+    component: "master"
+    chart: {{ template "mariadb.chart" . }}
+    release: {{ .Release.Name | quote }}
+    heritage: {{ .Release.Service | quote }}
+data:
+  my.cnf: |-
+{{ .Values.master.config | indent 4 }}
+{{- end -}}

charts/mariadb/v4.4.2/templates/master-statefulset.yaml

+apiVersion: apps/v1beta1
+kind: StatefulSet
+metadata:
+  name: {{ template "master.fullname" . }}
+  labels:
+    app: "{{ template "mariadb.name" . }}"
+    chart: {{ template "mariadb.chart" . }}
+    component: "master"
+    release: {{ .Release.Name | quote }}
+    heritage: {{ .Release.Service | quote }}
+spec:
+  serviceName: "{{ template "master.fullname" . }}"
+  replicas: 1
+  updateStrategy:
+    type: RollingUpdate
+  template:
+    metadata:
+      labels:
+        app: "{{ template "mariadb.name" . }}"
+        component: "master"
+        release: "{{ .Release.Name }}"
+        chart: {{ template "mariadb.chart" . }}
+    spec:
+      securityContext:
+        runAsUser: 1001
+        fsGroup: 1001
+      {{- if eq .Values.master.antiAffinity "hard" }}
+      affinity:
+      {{- with .Values.master.affinity  }}
+{{ toYaml . | indent 8 }}
+      {{- end }}
+        podAntiAffinity:
+          requiredDuringSchedulingIgnoredDuringExecution:
+            - topologyKey: "kubernetes.io/hostname"
+              labelSelector:
+                matchLabels:
+                  app: "{{ template "mariadb.name" . }}"
+                  release: "{{ .Release.Name }}"
+      {{- else if eq .Values.master.antiAffinity "soft" }}
+      affinity:
+      {{- with .Values.master.affinity  }}
+{{ toYaml . | indent 8 }}
+      {{- end }}
+        podAntiAffinity:
+          preferredDuringSchedulingIgnoredDuringExecution:
+          - weight: 1
+            podAffinityTerm:
+              topologyKey: kubernetes.io/hostname
+              labelSelector:
+                matchLabels:
+                  app: "{{ template "mariadb.name" . }}"
+                  release: "{{ .Release.Name }}"
+      {{- else}}
+      {{- with .Values.master.affinity }}
+      affinity:
+{{ toYaml . | indent 8 }}
+      {{- end }}
+      {{- end }}
+      {{- with .Values.master.tolerations }}
+      tolerations:
+{{ toYaml . | indent 8 }}
+      {{- end }}
+      {{- if .Values.image.pullSecrets }}
+      imagePullSecrets:
+      {{- range .Values.image.pullSecrets }}
+        - name: {{ . }}
+      {{- end}}
+      {{- end }}
+      containers:
+      - name: "mariadb"
+        image: {{ template "mariadb.image" . }}
+        imagePullPolicy: {{ .Values.image.pullPolicy | quote }}
+        env:
+        - name: MARIADB_ROOT_PASSWORD
+          valueFrom:
+            secretKeyRef:
+              name: {{ template "mariadb.fullname" . }}
+              key: mariadb-root-password
+        {{- if .Values.db.user }}
+        - name: MARIADB_USER
+          value: "{{ .Values.db.user }}"
+        - name: MARIADB_PASSWORD
+          valueFrom:
+            secretKeyRef:
+              name: {{ template "mariadb.fullname" . }}
+              key: mariadb-password
+        {{- end }}
+        - name: MARIADB_DATABASE
+          value: "{{ .Values.db.name }}"
+        {{- if .Values.replication.enabled }}
+        - name: MARIADB_REPLICATION_MODE
+          value: "master"
+        - name: MARIADB_REPLICATION_USER
+          value: "{{ .Values.replication.user }}"
+        - name: MARIADB_REPLICATION_PASSWORD
+          valueFrom:
+            secretKeyRef:
+              name: {{ template "mariadb.fullname" . }}
+              key: mariadb-replication-password
+        {{- end }}
+        ports:
+        - name: mysql
+          containerPort: 3306
+        {{- if .Values.master.livenessProbe.enabled }}
+        livenessProbe:
+          exec:
+            command: ["sh", "-c", "exec mysqladmin status -uroot -p$MARIADB_ROOT_PASSWORD"]
+          initialDelaySeconds: {{ .Values.master.livenessProbe.initialDelaySeconds }}
+          periodSeconds: {{ .Values.master.livenessProbe.periodSeconds }}
+          timeoutSeconds: {{ .Values.master.livenessProbe.timeoutSeconds }}
+          successThreshold: {{ .Values.master.livenessProbe.successThreshold }}
+          failureThreshold: {{ .Values.master.livenessProbe.failureThreshold }}
+        {{- end }}
+        {{- if .Values.master.readinessProbe.enabled }}
+        readinessProbe:
+          exec:
+            command: ["sh", "-c", "exec mysqladmin status -uroot -p$MARIADB_ROOT_PASSWORD"]
+          initialDelaySeconds: {{ .Values.master.readinessProbe.initialDelaySeconds }}
+          periodSeconds: {{ .Values.master.readinessProbe.periodSeconds }}
+          timeoutSeconds: {{ .Values.master.readinessProbe.timeoutSeconds }}
+          successThreshold: {{ .Values.master.readinessProbe.successThreshold }}
+          failureThreshold: {{ .Values.master.readinessProbe.failureThreshold }}
+        {{- end }}
+        resources:
+{{ toYaml .Values.master.resources | indent 10 }}
+        volumeMounts:
+        - name: data
+          mountPath: /bitnami/mariadb
+        - name: custom-init-scripts
+          mountPath: /docker-entrypoint-initdb.d
+{{- if .Values.master.config }}
+        - name: config
+          mountPath: /opt/bitnami/mariadb/conf/my.cnf
+          subPath: my.cnf
+{{- if .Values.master.persistence.existingClaim }}
+        - name: {{ .Values.master.persistence.existingClaim }}
+          mountPath: {{ .Values.master.persistence.mountPath }}
+{{- end }}
+{{- end }}
+{{- if .Values.metrics.enabled }}
+      - name: metrics
+        image: {{ template "metrics.image" . }}
+        imagePullPolicy: {{ .Values.metrics.image.pullPolicy | quote }}
+        env:
+        - name: MARIADB_ROOT_PASSWORD
+          valueFrom:
+            secretKeyRef:
+              name: {{ template "mariadb.fullname" . }}
+              key: mariadb-root-password
+        command: [ 'sh', '-c', 'DATA_SOURCE_NAME="root:$MARIADB_ROOT_PASSWORD@(localhost:3306)/" /bin/mysqld_exporter' ]
+        ports:
+        - name: metrics
+          containerPort: 9104
+        livenessProbe:
+          httpGet:
+            path: /metrics
+            port: metrics
+          initialDelaySeconds: 15
+          timeoutSeconds: 5
+        readinessProbe:
+          httpGet:
+            path: /metrics
+            port: metrics
+          initialDelaySeconds: 5
+          timeoutSeconds: 1
+        resources:
+{{ toYaml .Values.metrics.resources | indent 10 }}
+{{- end }}
+      volumes:
+      {{- if and .Values.master.persistence.enabled .Values.master.persistence.existingClaim }}
+        - name: {{ .Values.master.persistence.existingClaim }}
+          persistentVolumeClaim:
+            claimName: {{ .Values.master.persistence.existingClaim }}
+      {{ end }}
+      {{- if .Values.master.config }}
+        - name: config
+          configMap:
+            name: {{ template "master.fullname" . }}
+      {{- end }}
+        - name: custom-init-scripts
+          configMap:
+            name: {{ template "master.fullname" . }}-init-scripts
+{{- if .Values.master.persistence.enabled }}
+  volumeClaimTemplates:
+    - metadata:
+        name: data
+        labels:
+          app: "{{ template "mariadb.name" . }}"
+          chart: {{ template "mariadb.chart" . }}
+          component: "master"
+          release: {{ .Release.Name | quote }}
+          heritage: {{ .Release.Service | quote }}
+      spec:
+        accessModes:
+        {{- range .Values.master.persistence.accessModes }}
+          - {{ . | quote }}
+        {{- end }}
+        resources:
+          requests:
+            storage: {{ .Values.master.persistence.size | quote }}
+      {{- if .Values.master.persistence.storageClass }}
+      {{- if (eq "-" .Values.master.persistence.storageClass) }}
+        storageClassName: ""
+      {{- else }}
+        storageClassName: {{ .Values.master.persistence.storageClass | quote }}
+      {{- end }}
+      {{- end }}
+{{- else }}
+        - name: "data"
+          emptyDir: {}
+{{- end }}
\ No newline at end of file

charts/mariadb/v4.4.2/templates/master-svc.yaml

+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ template "mariadb.fullname" . }}
+  labels:
+    app: "{{ template "mariadb.name" . }}"
+    component: "master"
+    chart: {{ template "mariadb.chart" . }}
+    release: {{ .Release.Name | quote }}
+    heritage: {{ .Release.Service | quote }}
+{{- if .Values.metrics.enabled }}
+  annotations:
+{{ toYaml .Values.metrics.annotations | indent 4 }}
+{{- end }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+  - name: mysql
+    port: {{ .Values.service.port }}
+    targetPort: mysql
+{{- if eq .Values.service.type "NodePort" }}
+{{- if .Values.service.nodePort }}
+{{- if .Values.service.nodePort.master }}
+    nodePort: {{ .Values.service.nodePort.master }}
+{{- end }}
+{{- end }}
+{{- end }}
+{{- if .Values.metrics.enabled }}
+  - name: metrics
+    port: 9104
+    targetPort: metrics
+{{- end }}
+  selector:
+    app: "{{ template "mariadb.name" . }}"
+    component: "master"
+    release: "{{ .Release.Name }}"

charts/mariadb/v4.4.2/templates/secrets.yaml

+{{- if (not .Values.rootUser.existingSecret) -}}
+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ template "mariadb.fullname" . }}
+  labels:
+    app: "{{ template "mariadb.name" . }}"
+    chart: {{ template "mariadb.chart" . }}
+    release: {{ .Release.Name | quote }}
+    heritage: {{ .Release.Service | quote }}
+type: Opaque
+data:
+  {{- if .Values.rootUser.password }}
+  mariadb-root-password: "{{ .Values.rootUser.password | b64enc }}"
+  {{- else if (not .Values.rootUser.forcePassword) }}
+  mariadb-root-password: "{{ randAlphaNum 10 | b64enc }}"
+  {{ else }}
+  mariadb-root-password: {{ required "A MariaDB Root Password is required!" .Values.rootUser.password }}
+  {{- end }}
+  {{- if .Values.db.user }}
+  {{- if .Values.db.password }}
+  mariadb-password: "{{ .Values.db.password | b64enc }}"
+  {{- else if (not .Values.db.forcePassword) }}
+  mariadb-password: "{{ randAlphaNum 10 | b64enc }}"
+  {{- else }}
+  mariadb-password: {{ required "A MariaDB Database Password is required!" .Values.db.password }}
+  {{- end }}
+  {{- end }}
+  {{- if .Values.replication.enabled }}
+  {{- if .Values.replication.password }}
+  mariadb-replication-password: "{{ .Values.replication.password | b64enc }}"
+  {{- else if (not .Values.replication.forcePassword) }}
+  mariadb-replication-password: "{{ randAlphaNum 10 | b64enc }}"
+  {{- else }}
+  mariadb-replication-password: {{ required "A MariaDB Replication Password is required!" .Values.replication.password }}
+  {{- end }}
+  {{- end }}
+{{- end }}
\ No newline at end of file

charts/mariadb/v4.4.2/templates/slave-configmap.yaml

+{{- if and .Values.replication.enabled .Values.slave.config }}
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ template "slave.fullname" . }}
+  labels:
+    app: {{ template "mariadb.name" . }}
+    component: "slave"
+    chart: {{ template "mariadb.chart" . }}
+    release: {{ .Release.Name | quote }}
+    heritage: {{ .Release.Service | quote }}
+data:
+  my.cnf: |-
+{{ .Values.slave.config | indent 4 }}
+{{- end }}

charts/mariadb/v4.4.2/templates/slave-statefulset.yaml

+{{- if .Values.replication.enabled }}
+apiVersion: apps/v1beta1
+kind: StatefulSet
+metadata:
+  name: {{ template "slave.fullname" . }}
+  labels:
+    app: "{{ template "mariadb.name" . }}"
+    chart: {{ template "mariadb.chart" . }}
+    component: "slave"
+    release: {{ .Release.Name | quote }}
+    heritage: {{ .Release.Service | quote }}
+spec:
+  serviceName: "{{ template "slave.fullname" . }}"
+  replicas: {{ .Values.slave.replicas }}
+  updateStrategy:
+    type: RollingUpdate
+  template:
+    metadata:
+      labels:
+        app: "{{ template "mariadb.name" . }}"
+        component: "slave"
+        release: "{{ .Release.Name }}"
+        chart: {{ template "mariadb.chart" . }}
+    spec:
+      securityContext:
+        runAsUser: 1001
+        fsGroup: 1001
+      {{- if eq .Values.slave.antiAffinity "hard" }}
+      affinity:
+      {{- with .Values.slave.affinity  }}
+{{ toYaml . | indent 8 }}
+      {{- end }}
+        podAntiAffinity:
+          requiredDuringSchedulingIgnoredDuringExecution:
+            - topologyKey: "kubernetes.io/hostname"
+              labelSelector:
+                matchLabels:
+                  app: "{{ template "mariadb.name" . }}"
+                  release: "{{ .Release.Name }}"
+      {{- else if eq .Values.slave.antiAffinity "soft" }}
+      affinity:
+      {{- with .Values.slave.affinity  }}
+{{ toYaml . | indent 8 }}
+      {{- end }}
+        podAntiAffinity:
+          preferredDuringSchedulingIgnoredDuringExecution:
+          - weight: 1
+            podAffinityTerm:
+              topologyKey: kubernetes.io/hostname
+              labelSelector:
+                matchLabels:
+                  app: "{{ template "mariadb.name" . }}"
+                  release: "{{ .Release.Name }}"
+      {{- else}}
+      {{- with .Values.slave.affinity }}
+      affinity:
+{{ toYaml . | indent 8 }}
+      {{- end }}
+      {{- end }}
+      {{- with .Values.slave.tolerations }}
+      tolerations:
+{{ toYaml . | indent 8 }}
+      {{- end }}
+      {{- if .Values.image.pullSecrets }}
+      imagePullSecrets:
+      {{- range .Values.image.pullSecrets }}
+        - name: {{ . }}
+      {{- end}}
+      {{- end }}
+      containers:
+      - name: "mariadb"
+        image: {{ template "mariadb.image" . }}
+        imagePullPolicy: {{ .Values.image.pullPolicy | quote }}
+        env:
+        - name: MARIADB_ROOT_PASSWORD
+          valueFrom:
+            secretKeyRef:
+              name: {{ template "mariadb.fullname" . }}
+              key: mariadb-root-password
+        {{- if .Values.db.user }}
+        - name: MARIADB_USER
+          value: "{{ .Values.db.user }}"
+        - name: MARIADB_PASSWORD
+          valueFrom:
+            secretKeyRef:
+              name: {{ template "mariadb.fullname" . }}
+              key: mariadb-password
+        {{- end }}
+        - name: MARIADB_DATABASE
+          value: "{{ .Values.db.name }}"
+        - name: MARIADB_REPLICATION_MODE
+          value: "slave"
+        - name: MARIADB_MASTER_HOST
+          value: {{ template "mariadb.fullname" . }}
+        - name: MARIADB_MASTER_PORT
+          value: "3306"
+        - name: MARIADB_MASTER_USER
+          value: "root"
+        - name: MARIADB_MASTER_PASSWORD
+          valueFrom:
+            secretKeyRef:
+              name: {{ template "mariadb.fullname" . }}
+              key: mariadb-root-password
+        - name: MARIADB_REPLICATION_USER
+          value: "{{ .Values.replication.user }}"
+        - name: MARIADB_REPLICATION_PASSWORD
+          valueFrom:
+            secretKeyRef:
+              name: {{ template "mariadb.fullname" . }}
+              key: mariadb-replication-password
+        ports:
+        - name: mysql
+          containerPort: 3306
+        {{- if .Values.slave.livenessProbe.enabled }}
+        livenessProbe:
+          exec:
+            command: ["sh", "-c", "exec mysqladmin status -uroot -p$MARIADB_ROOT_PASSWORD"]
+          initialDelaySeconds: {{ .Values.slave.livenessProbe.initialDelaySeconds }}
+          periodSeconds: {{ .Values.slave.livenessProbe.periodSeconds }}
+          timeoutSeconds: {{ .Values.slave.livenessProbe.timeoutSeconds }}
+          successThreshold: {{ .Values.slave.livenessProbe.successThreshold }}
+          failureThreshold: {{ .Values.slave.livenessProbe.failureThreshold }}
+        {{- end }}
+        {{- if .Values.slave.readinessProbe.enabled }}
+        readinessProbe:
+          exec:
+            command: ["sh", "-c", "exec mysqladmin status -uroot -p$MARIADB_ROOT_PASSWORD"]
+          initialDelaySeconds: {{ .Values.slave.readinessProbe.initialDelaySeconds }}
+          periodSeconds: {{ .Values.slave.readinessProbe.periodSeconds }}
+          timeoutSeconds: {{ .Values.slave.readinessProbe.timeoutSeconds }}
+          successThreshold: {{ .Values.slave.readinessProbe.successThreshold }}
+          failureThreshold: {{ .Values.slave.readinessProbe.failureThreshold }}
+        {{- end }}
+        resources:
+{{ toYaml .Values.slave.resources | indent 10 }}
+        volumeMounts:
+        - name: data
+          mountPath: /bitnami/mariadb
+{{- if .Values.slave.config }}
+        - name: config
+          mountPath: /opt/bitnami/mariadb/conf/my.cnf
+          subPath: my.cnf
+{{- end }}
+{{- if .Values.metrics.enabled }}
+      - name: metrics
+        image: {{ template "metrics.image" . }}
+        imagePullPolicy: {{ .Values.metrics.image.pullPolicy | quote }}
+        env:
+        - name: MARIADB_ROOT_PASSWORD
+          valueFrom:
+            secretKeyRef:
+              name: {{ template "mariadb.fullname" . }}
+              key: mariadb-root-password
+        command: [ 'sh', '-c', 'DATA_SOURCE_NAME="root:$MARIADB_ROOT_PASSWORD@(localhost:3306)/" /bin/mysqld_exporter' ]
+        ports:
+        - name: metrics
+          containerPort: 9104
+        livenessProbe:
+          httpGet:
+            path: /metrics
+            port: metrics
+          initialDelaySeconds: 15
+          timeoutSeconds: 5
+        readinessProbe:
+          httpGet:
+            path: /metrics
+            port: metrics
+          initialDelaySeconds: 5
+          timeoutSeconds: 1
+        resources:
+{{ toYaml .Values.metrics.resources | indent 10 }}
+{{- end }}
+      volumes:
+      {{- if .Values.slave.config }}
+        - name: config
+          configMap:
+            name: {{ template "slave.fullname" . }}
+      {{- end }}
+{{- if .Values.slave.persistence.enabled }}
+  volumeClaimTemplates:
+    - metadata:
+        name: data
+        labels:
+          app: "{{ template "mariadb.name" . }}"
+          chart: {{ template "mariadb.chart" . }}
+          component: "slave"
+          release: {{ .Release.Name | quote }}
+          heritage: {{ .Release.Service | quote }}
+      spec:
+        accessModes:
+        {{- range .Values.slave.persistence.accessModes }}
+          - {{ . | quote }}
+        {{- end }}
+        resources:
+          requests:
+            storage: {{ .Values.slave.persistence.size | quote }}
+      {{- if .Values.slave.persistence.storageClass }}
+      {{- if (eq "-" .Values.slave.persistence.storageClass) }}
+        storageClassName: ""
+      {{- else }}
+        storageClassName: {{ .Values.slave.persistence.storageClass | quote }}
+      {{- end }}
+      {{- end }}
+{{- else }}
+        - name: "data"
+          emptyDir: {}
+{{- end }}
+{{- end }}

charts/mariadb/v4.4.2/templates/slave-svc.yaml

+{{- if .Values.replication.enabled }}
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ template "slave.fullname" . }}
+  labels:
+    app: "{{ template "mariadb.name" . }}"
+    chart: {{ template "mariadb.chart" . }}
+    component: "slave"
+    release: {{ .Release.Name | quote }}
+    heritage: {{ .Release.Service | quote }}
+{{- if .Values.metrics.enabled }}
+  annotations:
+{{ toYaml .Values.metrics.annotations | indent 4 }}
+{{- end }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+  - name: mysql
+    port: {{ .Values.service.port }}
+    targetPort: mysql
+{{- if (eq .Values.service.type "NodePort") }}
+{{- if .Values.service.nodePort }}
+{{- if .Values.service.nodePort.slave }}
+    nodePort: {{ .Values.service.nodePort.slave }}
+{{- end }}
+{{- end }}
+{{- end }}
+{{- if .Values.metrics.enabled }}
+  - name: metrics
+    port: 9104
+    targetPort: metrics
+{{- end }}
+  selector:
+    app: "{{ template "mariadb.name" . }}"
+    component: "slave"
+    release: "{{ .Release.Name }}"
+{{- end }}

charts/mariadb/v4.4.2/templates/test-runner.yaml

+apiVersion: v1
+kind: Pod
+metadata:
+  name: "{{ template "mariadb.fullname" . }}-test-{{ randAlphaNum 5 | lower }}"
+  annotations:
+    "helm.sh/hook": test-success
+spec:
+  initContainers:
+    - name: "test-framework"
+      image: "dduportal/bats:0.4.0"
+      command:
+        - "bash"
+        - "-c"
+        - |
+          set -ex
+          # copy bats to tools dir
+          cp -R /usr/local/libexec/ /tools/bats/
+      volumeMounts:
+      - mountPath: /tools
+        name: tools
+  containers:
+    - name: mariadb-test
+      image: "{{ .Values.image.registry }}/{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+      imagePullPolicy: {{ .Values.image.pullPolicy | quote }}
+      command: ["/tools/bats/bats", "-t", "/tests/run.sh"]
+      env:
+        - name: MARIADB_ROOT_PASSWORD
+          valueFrom:
+            secretKeyRef:
+              name: {{ template "mariadb.fullname" . }}
+              key: mariadb-root-password
+      volumeMounts:
+      - mountPath: /tests
+        name: tests
+        readOnly: true
+      - mountPath: /tools
+        name: tools
+  volumes:
+  - name: tests
+    configMap:
+      name: {{ template "mariadb.fullname" . }}-tests
+  - name: tools
+    emptyDir: {}
+  restartPolicy: Never

charts/mariadb/v4.4.2/templates/tests.yaml

+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ template "mariadb.fullname" . }}-tests
+data:
+  run.sh: |-
+    @test "Testing MariaDB is accessible" {
+      mysql -h {{ template "mariadb.fullname" . }} -uroot -p$MARIADB_ROOT_PASSWORD -e 'show databases;'
+    }

charts/mariadb/v4.4.2/values-production.yaml

+## Bitnami MariaDB image
+## ref: https://hub.docker.com/r/bitnami/mariadb/tags/
+##
+image:
+  registry: docker.io
+  repository: bitnami/mariadb
+  tag: 10.1.36-debian-9
+  ## Specify a imagePullPolicy
+  ## Defaults to 'Always' if image tag is 'latest', else set to 'IfNotPresent'
+  ## ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images
+  ##
+  pullPolicy: IfNotPresent
+  ## Optionally specify an array of imagePullSecrets.
+  ## Secrets must be manually created in the namespace.
+  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
+  ##
+  # pullSecrets:
+  #   - myRegistrKeySecretName
+
+service:
+  ## Kubernetes service type, ClusterIP and NodePort are supported at present
+  type: ClusterIP
+  port: 3306
+  ## Specify the nodePort value for the LoadBalancer and NodePort service types.
+  ## ref: https://kubernetes.io/docs/concepts/services-networking/service/#type-nodeport
+  ##
+  # nodePort:
+  #   master: 30001
+  #   slave: 30002
+
+rootUser:
+  ## MariaDB admin password
+  ## ref: https://github.com/bitnami/bitnami-docker-mariadb#setting-the-root-password-on-first-run
+  ##
+  password:
+  ## Use existing secret (ignores root, db and replication passwords)
+  # existingSecret:
+  ##
+  ## Option to force users to specify a password. That is required for 'helm upgrade' to work properly.
+  ## If it is not force, a random password will be generated.
+  forcePassword: true
+
+db:
+  ## MariaDB username and password
+  ## ref: https://github.com/bitnami/bitnami-docker-mariadb#creating-a-database-user-on-first-run
+  ##
+  user:
+  password:
+  ## Password is ignored if existingSecret is specified.
+  ## Database to create
+  ## ref: https://github.com/bitnami/bitnami-docker-mariadb#creating-a-database-on-first-run
+  ##
+  name: my_database
+  ## Option to force users to specify a password. That is required for 'helm upgrade' to work properly.
+  ## If it is not force, a random password will be generated.
+  forcePassword: true
+
+replication:
+  ## Enable replication. This enables the creation of replicas of MariaDB. If false, only a
+  ## master deployment would be created
+  enabled: true
+  ##
+  ## MariaDB replication user
+  ## ref: https://github.com/bitnami/bitnami-docker-mariadb#setting-up-a-replication-cluster
+  ##
+  user: replicator
+  ## MariaDB replication user password
+  ## ref: https://github.com/bitnami/bitnami-docker-mariadb#setting-up-a-replication-cluster
+  ##
+  password:
+  ## Password is ignored if existingSecret is specified.
+  ##
+  ## Option to force users to specify a password. That is required for 'helm upgrade' to work properly.
+  ## If it is not force, a random password will be generated.
+  forcePassword: true
+
+master:
+  ## Affinity for pod assignment
+  ## Ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
+  ##
+  affinity: {}
+
+  ## Kept for backwards compatibility. You can now disable it by removing it.
+  ## if you wish to set it through master.affinity.podAntiAffinity instead.
+  ##
+  antiAffinity: soft
+
+  ## Tolerations for pod assignment
+  ## Ref: https://kubernetes.io/docs/concepts/configuration/taint-and-toleration/
+  ##
+  tolerations: []
+
+  ## Enable persistence using Persistent Volume Claims
+  ## ref: http://kubernetes.io/docs/user-guide/persistent-volumes/
+  ##
+  persistence:
+    ## If true, use a Persistent Volume Claim, If false, use emptyDir
+    ##
+    enabled: true
+    # Enable persistence using an existing PVC
+    # existingClaim:
+    # mountPath:
+    ## Persistent Volume Storage Class
+    ## If defined, storageClassName: <storageClass>
+    ## If set to "-", storageClassName: "", which disables dynamic provisioning
+    ## If undefined (the default) or set to null, no storageClassName spec is
+    ##   set, choosing the default provisioner.  (gp2 on AWS, standard on
+    ##   GKE, AWS & OpenStack)
+    ##
+    # storageClass: "-"
+    ## Persistent Volume Claim annotations
+    ##
+    annotations:
+    ## Persistent Volume Access Mode
+    ##
+    accessModes:
+    - ReadWriteOnce
+    ## Persistent Volume size
+    ##
+    size: 8Gi
+    ##
+
+  ## Configure MySQL with a custom my.cnf file
+  ## ref: https://mysql.com/kb/en/mysql/configuring-mysql-with-mycnf/#example-of-configuration-file
+  ##
+  config: |-
+    [mysqld]
+    skip-name-resolve
+    explicit_defaults_for_timestamp
+    basedir=/opt/bitnami/mariadb
+    port=3306
+    socket=/opt/bitnami/mariadb/tmp/mysql.sock
+    tmpdir=/opt/bitnami/mariadb/tmp
+    max_allowed_packet=16M
+    bind-address=0.0.0.0
+    pid-file=/opt/bitnami/mariadb/tmp/mysqld.pid
+    log-error=/opt/bitnami/mariadb/logs/mysqld.log
+    character-set-server=UTF8
+    collation-server=utf8_general_ci
+
+    [client]
+    port=3306
+    socket=/opt/bitnami/mariadb/tmp/mysql.sock
+    default-character-set=UTF8
+
+    [manager]
+    port=3306
+    socket=/opt/bitnami/mariadb/tmp/mysql.sock
+    pid-file=/opt/bitnami/mariadb/tmp/mysqld.pid
+
+  ## Configure master resource requests and limits
+  ## ref: http://kubernetes.io/docs/user-guide/compute-resources/
+  ##
+  resources: {}
+  livenessProbe:
+    enabled: true
+    ##
+    ## Initializing the database could take some time
+    initialDelaySeconds: 120
+    ##
+    ## Default Kubernetes values
+    periodSeconds: 10
+    timeoutSeconds: 1
+    successThreshold: 1
+    failureThreshold: 3
+  readinessProbe:
+    enabled: true
+    initialDelaySeconds: 15
+    ##
+    ## Default Kubernetes values
+    periodSeconds: 10
+    timeoutSeconds: 1
+    successThreshold: 1
+    failureThreshold: 3
+
+slave:
+  replicas: 2
+
+  ## Affinity for pod assignment
+  ## Ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
+  ##
+  affinity: {}
+
+  ## Kept for backwards compatibility. You can now disable it by removing it.
+  ## if you wish to set it through slave.affinity.podAntiAffinity instead.
+  ##
+  antiAffinity: soft
+
+  ## Tolerations for pod assignment
+  ## Ref: https://kubernetes.io/docs/concepts/configuration/taint-and-toleration/
+  ##
+  tolerations: []
+
+  persistence:
+    ## If true, use a Persistent Volume Claim, If false, use emptyDir
+    ##
+    enabled: true
+    # storageClass: "-"
+    annotations:
+    accessModes:
+    - ReadWriteOnce
+    ## Persistent Volume size
+    ##
+    size: 8Gi
+    ##
+
+  ## Configure MySQL slave with a custom my.cnf file
+  ## ref: https://mysql.com/kb/en/mysql/configuring-mysql-with-mycnf/#example-of-configuration-file
+  ##
+  config: |-
+    [mysqld]
+    skip-name-resolve
+    explicit_defaults_for_timestamp
+    basedir=/opt/bitnami/mariadb
+    port=3306
+    socket=/opt/bitnami/mariadb/tmp/mysql.sock
+    tmpdir=/opt/bitnami/mariadb/tmp
+    max_allowed_packet=16M
+    bind-address=0.0.0.0
+    pid-file=/opt/bitnami/mariadb/tmp/mysqld.pid
+    log-error=/opt/bitnami/mariadb/logs/mysqld.log
+    character-set-server=UTF8
+    collation-server=utf8_general_ci
+
+    [client]
+    port=3306
+    socket=/opt/bitnami/mariadb/tmp/mysql.sock
+    default-character-set=UTF8
+
+    [manager]
+    port=3306
+    socket=/opt/bitnami/mariadb/tmp/mysql.sock
+    pid-file=/opt/bitnami/mariadb/tmp/mysqld.pid
+
+  ##
+  ## Configure slave resource requests and limits
+  ## ref: http://kubernetes.io/docs/user-guide/compute-resources/
+  ##
+  resources: {}
+  livenessProbe:
+    enabled: true
+    ##
+    ## Initializing the database could take some time
+    initialDelaySeconds: 120
+    ##
+    ## Default Kubernetes values
+    periodSeconds: 10
+    timeoutSeconds: 1
+    successThreshold: 1
+    failureThreshold: 3
+  readinessProbe:
+    enabled: true
+    initialDelaySeconds: 15
+    ##
+    ## Default Kubernetes values
+    periodSeconds: 10
+    timeoutSeconds: 1
+    successThreshold: 1
+    failureThreshold: 3
+
+metrics:
+  enabled: false
+  image:
+    registry: docker.io
+    repository: prom/mysqld-exporter
+    tag: v0.10.0
+    pullPolicy: IfNotPresent
+  resources: {}
+  annotations:
+    prometheus.io/scrape: "true"
+    prometheus.io/port: "9104"

charts/mariadb/v4.4.2/values.yaml

+## Bitnami MariaDB image
+## ref: https://hub.docker.com/r/bitnami/mariadb/tags/
+##
+image:
+  registry: docker.io
+  repository: bitnami/mariadb
+  tag: 10.1.36-debian-9
+  ## Specify a imagePullPolicy
+  ## Defaults to 'Always' if image tag is 'latest', else set to 'IfNotPresent'
+  ## ref: http://kubernetes.io/docs/user-guide/images/#pre-pulling-images
+  ##
+  pullPolicy: IfNotPresent
+  ## Optionally specify an array of imagePullSecrets.
+  ## Secrets must be manually created in the namespace.
+  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
+  ##
+  # pullSecrets:
+  #   - myRegistrKeySecretName
+
+service:
+  ## Kubernetes service type, ClusterIP and NodePort are supported at present
+  type: ClusterIP
+  port: 3306
+  ## Specify the nodePort value for the LoadBalancer and NodePort service types.
+  ## ref: https://kubernetes.io/docs/concepts/services-networking/service/#type-nodeport
+  ##
+  # nodePort:
+  #   master: 30001
+  #   slave: 30002
+
+rootUser:
+  ## MariaDB admin password
+  ## ref: https://github.com/bitnami/bitnami-docker-mariadb#setting-the-root-password-on-first-run
+  ##
+  password:
+  ## Use existing secret (ignores root, db and replication passwords)
+  # existingSecret:
+  ##
+  ## Option to force users to specify a password. That is required for 'helm upgrade' to work properly.
+  ## If it is not force, a random password will be generated.
+  forcePassword: false
+
+db:
+  ## MariaDB username and password
+  ## ref: https://github.com/bitnami/bitnami-docker-mariadb#creating-a-database-user-on-first-run
+  ##
+  user:
+  password:
+  ## Password is ignored if existingSecret is specified.
+  ## Database to create
+  ## ref: https://github.com/bitnami/bitnami-docker-mariadb#creating-a-database-on-first-run
+  ##
+  name: my_database
+  ## Option to force users to specify a password. That is required for 'helm upgrade' to work properly.
+  ## If it is not force, a random password will be generated.
+  forcePassword: false
+
+replication:
+  ## Enable replication. This enables the creation of replicas of MariaDB. If false, only a
+  ## master deployment would be created
+  enabled: true
+  ##
+  ## MariaDB replication user
+  ## ref: https://github.com/bitnami/bitnami-docker-mariadb#setting-up-a-replication-cluster
+  ##
+  user: replicator
+  ## MariaDB replication user password
+  ## ref: https://github.com/bitnami/bitnami-docker-mariadb#setting-up-a-replication-cluster
+  ##
+  password:
+  ## Password is ignored if existingSecret is specified.
+  ##
+  ## Option to force users to specify a password. That is required for 'helm upgrade' to work properly.
+  ## If it is not force, a random password will be generated.
+  forcePassword: false
+
+master:
+  ## Affinity for pod assignment
+  ## Ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
+  ##
+  affinity: {}
+
+  ## Kept for backwards compatibility. You can now disable it by removing it.
+  ## if you wish to set it through master.affinity.podAntiAffinity instead.
+  ##
+  antiAffinity: soft
+
+  ## Tolerations for pod assignment
+  ## Ref: https://kubernetes.io/docs/concepts/configuration/taint-and-toleration/
+  ##
+  tolerations: []
+
+  ## Enable persistence using Persistent Volume Claims
+  ## ref: http://kubernetes.io/docs/user-guide/persistent-volumes/
+  ##
+  persistence:
+    ## If true, use a Persistent Volume Claim, If false, use emptyDir
+    ##
+    enabled: true
+    # Enable persistence using an existing PVC
+    # existingClaim:
+    # mountPath:
+    ## Persistent Volume Storage Class
+    ## If defined, storageClassName: <storageClass>
+    ## If set to "-", storageClassName: "", which disables dynamic provisioning
+    ## If undefined (the default) or set to null, no storageClassName spec is
+    ##   set, choosing the default provisioner.  (gp2 on AWS, standard on
+    ##   GKE, AWS & OpenStack)
+    ##
+    # storageClass: "-"
+    ## Persistent Volume Claim annotations
+    ##
+    annotations:
+    ## Persistent Volume Access Mode
+    ##
+    accessModes:
+    - ReadWriteOnce
+    ## Persistent Volume size
+    ##
+    size: 8Gi
+    ##
+
+  ## Configure MySQL with a custom my.cnf file
+  ## ref: https://mysql.com/kb/en/mysql/configuring-mysql-with-mycnf/#example-of-configuration-file
+  ##
+  config: |-
+    [mysqld]
+    skip-name-resolve
+    explicit_defaults_for_timestamp
+    basedir=/opt/bitnami/mariadb
+    port=3306
+    socket=/opt/bitnami/mariadb/tmp/mysql.sock
+    tmpdir=/opt/bitnami/mariadb/tmp
+    max_allowed_packet=16M
+    bind-address=0.0.0.0
+    pid-file=/opt/bitnami/mariadb/tmp/mysqld.pid
+    log-error=/opt/bitnami/mariadb/logs/mysqld.log
+    character-set-server=UTF8
+    collation-server=utf8_general_ci
+
+    [client]
+    port=3306
+    socket=/opt/bitnami/mariadb/tmp/mysql.sock
+    default-character-set=UTF8
+
+    [manager]
+    port=3306
+    socket=/opt/bitnami/mariadb/tmp/mysql.sock
+    pid-file=/opt/bitnami/mariadb/tmp/mysqld.pid
+
+  ## Configure master resource requests and limits
+  ## ref: http://kubernetes.io/docs/user-guide/compute-resources/
+  ##
+  resources: {}
+  livenessProbe:
+    enabled: true
+    ##
+    ## Initializing the database could take some time
+    initialDelaySeconds: 120
+    ##
+    ## Default Kubernetes values
+    periodSeconds: 10
+    timeoutSeconds: 1
+    successThreshold: 1
+    failureThreshold: 3
+  readinessProbe:
+    enabled: true
+    initialDelaySeconds: 15
+    ##
+    ## Default Kubernetes values
+    periodSeconds: 10
+    timeoutSeconds: 1
+    successThreshold: 1
+    failureThreshold: 3
+
+slave:
+  replicas: 2
+
+  ## Affinity for pod assignment
+  ## Ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
+  ##
+  affinity: {}
+
+  ## Kept for backwards compatibility. You can now disable it by removing it.
+  ## if you wish to set it through slave.affinity.podAntiAffinity instead.
+  ##
+  antiAffinity: soft
+
+  ## Tolerations for pod assignment
+  ## Ref: https://kubernetes.io/docs/concepts/configuration/taint-and-toleration/
+  ##
+  tolerations: []
+
+  persistence:
+    ## If true, use a Persistent Volume Claim, If false, use emptyDir
+    ##
+    enabled: true
+    # storageClass: "-"
+    annotations:
+    accessModes:
+    - ReadWriteOnce
+    ## Persistent Volume size
+    ##
+    size: 8Gi
+    ##
+
+  ## Configure MySQL slave with a custom my.cnf file
+  ## ref: https://mysql.com/kb/en/mysql/configuring-mysql-with-mycnf/#example-of-configuration-file
+  ##
+  config: |-
+    [mysqld]
+    skip-name-resolve
+    explicit_defaults_for_timestamp
+    basedir=/opt/bitnami/mariadb
+    port=3306
+    socket=/opt/bitnami/mariadb/tmp/mysql.sock
+    tmpdir=/opt/bitnami/mariadb/tmp
+    max_allowed_packet=16M
+    bind-address=0.0.0.0
+    pid-file=/opt/bitnami/mariadb/tmp/mysqld.pid
+    log-error=/opt/bitnami/mariadb/logs/mysqld.log
+    character-set-server=UTF8
+    collation-server=utf8_general_ci
+
+    [client]
+    port=3306
+    socket=/opt/bitnami/mariadb/tmp/mysql.sock
+    default-character-set=UTF8
+
+    [manager]
+    port=3306
+    socket=/opt/bitnami/mariadb/tmp/mysql.sock
+    pid-file=/opt/bitnami/mariadb/tmp/mysqld.pid
+
+  ##
+  ## Configure slave resource requests and limits
+  ## ref: http://kubernetes.io/docs/user-guide/compute-resources/
+  ##
+  resources: {}
+  livenessProbe:
+    enabled: true
+    ##
+    ## Initializing the database could take some time
+    initialDelaySeconds: 120
+    ##
+    ## Default Kubernetes values
+    periodSeconds: 10
+    timeoutSeconds: 1
+    successThreshold: 1
+    failureThreshold: 3
+  readinessProbe:
+    enabled: true
+    initialDelaySeconds: 15
+    ##
+    ## Default Kubernetes values
+    periodSeconds: 10
+    timeoutSeconds: 1
+    successThreshold: 1
+    failureThreshold: 3
+
+metrics:
+  enabled: false
+  image:
+    registry: docker.io
+    repository: prom/mysqld-exporter
+    tag: v0.10.0
+    pullPolicy: IfNotPresent
+  resources: {}
+  annotations:
+    prometheus.io/scrape: "true"
+    prometheus.io/port: "9104"