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Merge pull request #1444 from matejhasul/mhs-sidecar
[bitnami/mariadb-galera] Allow to set additional containers
This commit is contained in:
Juan Ariza Toledano
@@ -1,6 +1,6 @@
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apiVersion: v1
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name: mariadb-galera
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version: 0.2.8
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version: 0.3.0
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appVersion: 10.3.18
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description: MariaDB Galera is a multi-master database cluster solution for synchronous replication and high availability.
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keywords:
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@@ -127,7 +127,8 @@ The following table lists the configurable parameters of the MariaDB Galera char
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| `persistence.storageClass` | Persistent Volume Storage Class | `nil` |
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| `persistence.accessModes` | Persistent Volume Access Modes | `[ReadWriteOnce]` |
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| `persistence.size` | Persistent Volume Size | `8Gi` |
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| `extraInitContainers` | Additional init containers (this value is evaluated as a template) | `nil` |
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| `extraInitContainers` | Additional init containers (this value is evaluated as a template) | `[]` |
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| `extraContainers` | Additional containers (this value is evaluated as a template) | `[]` |
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| `resources` | CPU/Memory resource requests/limits for node | `{}` |
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| `livenessProbe.enabled` | Turn on and off liveness probe | `true` |
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| `livenessProbe.initialDelaySeconds` | Delay before liveness probe is initiated | `120` |
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@@ -269,7 +270,7 @@ The chart mounts a [Persistent Volume](kubernetes.io/docs/user-guide/persistent-
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The feature allows for specifying a template string for a initContainer in the pod. Usecases include situations when you need some pre-run setup. For example, in IKS (IBM Cloud Kubernetes Service), non-root users do not have write permission on the volume mount path for NFS-powered file storage. So, you could use a initcontainer to `chown` the mount. See a example below, where we add an initContainer on the pod that reports to an external resource that the db is going to starting.
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`values.yaml`
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```yaml
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extraInitContainers: |
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extraInitContainers:
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- name: initcontainer
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image: bitnami/minideb:stretch
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command: ["/bin/sh", "-c"]
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@@ -277,6 +278,35 @@ extraInitContainers: |
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- install_packages curl && curl http://api-service.local/db/starting;
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```
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## Extra Containers
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The feature allows for specifying additional containers in the pod. Usecases include situations when you need to run some sidecar containers. For example, you can observe if mysql in pod is running and report to some service discovery software like eureka. Example:
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`values.yaml`
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```yaml
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extraContainers:
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- name: '{{ .Chart.Name }}-eureka-sidecar'
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image: 'image:tag'
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env:
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- name: SERVICE_NAME
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value: '{{ template "mariadb-galera.fullname" . }}'
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- name: EUREKA_APP_NAME
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value: '{{ template "mariadb-galera.name" . }}'
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- name: MARIADB_USER
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value: '{{ .Values.db.user }}'
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- name: MARIADB_PASSWORD
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valueFrom:
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secretKeyRef:
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name: '{{ template "mariadb-galera.fullname" . }}'
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key: mariadb-password
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resources:
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limits:
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cpu: 100m
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memory: 20Mi
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requests:
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cpu: 50m
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memory: 10Mi
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```
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## Upgrading
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It's necessary to specify the existing passwords while performing a upgrade to ensure the secrets are not updated with invalid randomly generated passwords. Remember to specify the existing values of the `rootUser.password`, `db.password` and `galera.mariabackup.password` parameters when upgrading the chart:
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@@ -76,7 +76,7 @@ spec:
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{{- include "mariadb-galera.imagePullSecrets" . | indent 6 }}
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{{- if .Values.extraInitContainers }}
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initContainers:
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{{ tpl .Values.extraInitContainers . | indent 6}}
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{{ tpl (toYaml .Values.extraInitContainers) . | indent 6 }}
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{{- end }}
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containers:
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- name: "mariadb-galera"
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@@ -239,6 +239,9 @@ spec:
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timeoutSeconds: 1
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resources:
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{{ toYaml .Values.metrics.resources | indent 10 }}
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{{- end }}
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{{- if .Values.extraContainers }}
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{{ tpl (toYaml .Values.extraContainers) . | indent 6 }}
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{{- end }}
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volumes:
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{{- if or (.Files.Glob "files/my.cnf") .Values.mariadbConfiguration .Values.configurationConfigMap }}
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@@ -361,11 +361,14 @@ persistence:
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## Additional init containers
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##
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# extraInitContainers: |
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extraInitContainers: []
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# - name: do-something
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# image: bitnami/minideb:stretch
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# command: ['do', 'something']
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## Additional containers
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##
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extraContainers: []
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## Configure resource requests and limits
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## ref: http://kubernetes.io/docs/user-guide/compute-resources/
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@@ -361,11 +361,14 @@ persistence:
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## Additional init containers
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##
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# extraInitContainers: |
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extraInitContainers: []
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# - name: do-something
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# image: bitnami/minideb:stretch
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# command: ['do', 'something']
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## Additional containers
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##
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extraContainers: []
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## Configure resource requests and limits
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## ref: http://kubernetes.io/docs/user-guide/compute-resources/
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