分布式调度框架。
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# DolphinScheduler
[DolphinScheduler](https://dolphinscheduler.apache.org) is a distributed and easy-to-expand visual DAG workflow scheduling system, dedicated to solving the complex dependencies in data processing, making the scheduling system out of the box for data processing.
## Introduction
This chart bootstraps a [DolphinScheduler](https://dolphinscheduler.apache.org) distributed deployment on a [Kubernetes](http://kubernetes.io) cluster using the [Helm](https://helm.sh) package manager.
## Prerequisites
- [Helm](https://helm.sh/) 3.1.0+
- [Kubernetes](https://kubernetes.io/) 1.12+
- PV provisioner support in the underlying infrastructure
## Installing the Chart
To install the chart with the release name `dolphinscheduler`:
```bash
$ git clone https://github.com/apache/incubator-dolphinscheduler.git
$ cd incubator-dolphinscheduler/docker/kubernetes/dolphinscheduler
$ helm repo add bitnami https://charts.bitnami.com/bitnami
$ helm dependency update .
$ helm install dolphinscheduler .
```
To install the chart with a namespace named `test`:
```bash
$ helm install dolphinscheduler . -n test
```
> **Tip**: If a namespace named `test` is used, the option `-n test` needs to be added to the `helm` and `kubectl` command
These commands deploy DolphinScheduler on the Kubernetes cluster in the default configuration. The [configuration](#configuration) section lists the parameters that can be configured during installation.
> **Tip**: List all releases using `helm list`
## Access DolphinScheduler UI
If `ingress.enabled` in `values.yaml` is set to `true`, you just access `http://${ingress.host}/dolphinscheduler` in browser.
> **Tip**: If there is a problem with ingress access, please contact the Kubernetes administrator and refer to the [Ingress](https://kubernetes.io/docs/concepts/services-networking/ingress/)
Otherwise, you need to execute port-forward command like:
```bash
$ kubectl port-forward --address 0.0.0.0 svc/dolphinscheduler-api 12345:12345
$ kubectl port-forward --address 0.0.0.0 -n test svc/dolphinscheduler-api 12345:12345 # with test namespace
```
> **Tip**: If the error of `unable to do port forwarding: socat not found` appears, you need to install `socat` at first
And then access the web: http://192.168.xx.xx:12345/dolphinscheduler
The default username is `admin` and the default password is `dolphinscheduler123`
## Uninstalling the Chart
To uninstall/delete the `dolphinscheduler` deployment:
```bash
$ helm uninstall dolphinscheduler
```
The command removes all the Kubernetes components but PVC's associated with the chart and deletes the release.
To delete the PVC's associated with `dolphinscheduler`:
```bash
$ kubectl delete pvc -l app.kubernetes.io/instance=dolphinscheduler
```
> **Note**: Deleting the PVC's will delete all data as well. Please be cautious before doing it.
## Configuration
The Configuration file is `values.yaml`, and the following tables lists the configurable parameters of the DolphinScheduler chart and their default values.
| Parameter | Description | Default |
| --------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------ | ----------------------------------------------------- |
| `nameOverride` | String to partially override common.names.fullname | `nil` |
| `fullnameOverride` | String to fully override common.names.fullname | `nil` |
| `timezone` | World time and date for cities in all time zones | `Asia/Shanghai` |
| `image.registry` | Docker image registry for the DolphinScheduler | `docker.io` |
| `image.repository` | Docker image repository for the DolphinScheduler | `apache/dolphinscheduler` |
| `image.tag` | Docker image version for the DolphinScheduler | `latest` |
| `image.pullPolicy` | Image pull policy. One of Always, Never, IfNotPresent | `IfNotPresent` |
| `image.pullSecrets` | Image pull secrets. An optional list of references to secrets in the same namespace to use for pulling any of the images | `[]` |
| | | |
| `postgresql.enabled` | If not exists external PostgreSQL, by default, the DolphinScheduler will use a internal PostgreSQL | `true` |
| `postgresql.postgresqlUsername` | The username for internal PostgreSQL | `root` |
| `postgresql.postgresqlPassword` | The password for internal PostgreSQL | `root` |
| `postgresql.postgresqlDatabase` | The database for internal PostgreSQL | `dolphinscheduler` |
| `postgresql.persistence.enabled` | Set `postgresql.persistence.enabled` to `true` to mount a new volume for internal PostgreSQL | `false` |
| `postgresql.persistence.size` | `PersistentVolumeClaim` Size | `20Gi` |
| `postgresql.persistence.storageClass` | PostgreSQL data Persistent Volume Storage Class. If set to "-", storageClassName: "", which disables dynamic provisioning | `-` |
| `externalDatabase.type` | If exists external PostgreSQL, and set `postgresql.enabled` value to false. DolphinScheduler's database type will use it | `postgresql` |
| `externalDatabase.driver` | If exists external PostgreSQL, and set `postgresql.enabled` value to false. DolphinScheduler's database driver will use it | `org.postgresql.Driver` |
| `externalDatabase.host` | If exists external PostgreSQL, and set `postgresql.enabled` value to false. DolphinScheduler's database host will use it | `localhost` |
| `externalDatabase.port` | If exists external PostgreSQL, and set `postgresql.enabled` value to false. DolphinScheduler's database port will use it | `5432` |
| `externalDatabase.username` | If exists external PostgreSQL, and set `postgresql.enabled` value to false. DolphinScheduler's database username will use it | `root` |
| `externalDatabase.password` | If exists external PostgreSQL, and set `postgresql.enabled` value to false. DolphinScheduler's database password will use it | `root` |
| `externalDatabase.database` | If exists external PostgreSQL, and set `postgresql.enabled` value to false. DolphinScheduler's database database will use it | `dolphinscheduler` |
| `externalDatabase.params` | If exists external PostgreSQL, and set `postgresql.enabled` value to false. DolphinScheduler's database params will use it | `characterEncoding=utf8` |
| | | |
| `zookeeper.enabled` | If not exists external Zookeeper, by default, the DolphinScheduler will use a internal Zookeeper | `true` |
| `zookeeper.fourlwCommandsWhitelist` | A list of comma separated Four Letter Words commands to use | `srvr,ruok,wchs,cons` |
| `zookeeper.service.port` | ZooKeeper port | `2181` |
| `zookeeper.persistence.enabled` | Set `zookeeper.persistence.enabled` to `true` to mount a new volume for internal Zookeeper | `false` |
| `zookeeper.persistence.size` | `PersistentVolumeClaim` Size | `20Gi` |
| `zookeeper.persistence.storageClass` | Zookeeper data Persistent Volume Storage Class. If set to "-", storageClassName: "", which disables dynamic provisioning | `-` |
| `zookeeper.zookeeperRoot` | Specify dolphinscheduler root directory in Zookeeper | `/dolphinscheduler` |
| `externalZookeeper.zookeeperQuorum` | If exists external Zookeeper, and set `zookeeper.enabled` value to false. Specify Zookeeper quorum | `127.0.0.1:2181` |
| `externalZookeeper.zookeeperRoot` | If exists external Zookeeper, and set `zookeeper.enabled` value to false. Specify dolphinscheduler root directory in Zookeeper | `/dolphinscheduler` |
| | | |
| `common.configmap.DOLPHINSCHEDULER_ENV` | System env path, self configuration, please read `values.yaml` | `[]` |
| `common.configmap.DOLPHINSCHEDULER_DATA_BASEDIR_PATH` | User data directory path, self configuration, please make sure the directory exists and have read write permissions | `/tmp/dolphinscheduler` |
| `common.configmap.RESOURCE_STORAGE_TYPE` | Resource storage type: HDFS, S3, NONE | `HDFS` |
| `common.configmap.RESOURCE_UPLOAD_PATH` | Resource store on HDFS/S3 path, please make sure the directory exists on hdfs and have read write permissions | `/dolphinscheduler` |
| `common.configmap.FS_DEFAULT_FS` | Resource storage file system like `file:///`, `hdfs://mycluster:8020` or `s3a://dolphinscheduler` | `file:///` |
| `common.configmap.FS_S3A_ENDPOINT` | S3 endpoint when `common.configmap.RESOURCE_STORAGE_TYPE` is set to `S3` | `s3.xxx.amazonaws.com` |
| `common.configmap.FS_S3A_ACCESS_KEY` | S3 access key when `common.configmap.RESOURCE_STORAGE_TYPE` is set to `S3` | `xxxxxxx` |
| `common.configmap.FS_S3A_SECRET_KEY` | S3 secret key when `common.configmap.RESOURCE_STORAGE_TYPE` is set to `S3` | `xxxxxxx` |
| `common.fsFileResourcePersistence.enabled` | Set `common.fsFileResourcePersistence.enabled` to `true` to mount a new file resource volume for `api` and `worker` | `false` |
| `common.fsFileResourcePersistence.accessModes` | `PersistentVolumeClaim` Access Modes, must be `ReadWriteMany` | `[ReadWriteMany]` |
| `common.fsFileResourcePersistence.storageClassName` | Resource Persistent Volume Storage Class, must support the access mode: ReadWriteMany | `-` |
| `common.fsFileResourcePersistence.storage` | `PersistentVolumeClaim` Size | `20Gi` |
| | | |
| `master.podManagementPolicy` | PodManagementPolicy controls how pods are created during initial scale up, when replacing pods on nodes, or when scaling down | `Parallel` |
| `master.replicas` | Replicas is the desired number of replicas of the given Template | `3` |
| `master.annotations` | The `annotations` for master server | `{}` |
| `master.affinity` | If specified, the pod's scheduling constraints | `{}` |
| `master.nodeSelector` | NodeSelector is a selector which must be true for the pod to fit on a node | `{}` |
| `master.tolerations` | If specified, the pod's tolerations | `{}` |
| `master.resources` | The `resource` limit and request config for master server | `{}` |
| `master.configmap.DOLPHINSCHEDULER_OPTS` | The java options for master server | `""` |
| `master.configmap.MASTER_EXEC_THREADS` | Master execute thread num | `100` |
| `master.configmap.MASTER_EXEC_TASK_NUM` | Master execute task number in parallel | `20` |
| `master.configmap.MASTER_HEARTBEAT_INTERVAL` | Master heartbeat interval | `10` |
| `master.configmap.MASTER_TASK_COMMIT_RETRYTIMES` | Master commit task retry times | `5` |
| `master.configmap.MASTER_TASK_COMMIT_INTERVAL` | Master commit task interval | `1000` |
| `master.configmap.MASTER_MAX_CPULOAD_AVG` | Only less than cpu avg load, master server can work. default value : the number of cpu cores * 2 | `100` |
| `master.configmap.MASTER_RESERVED_MEMORY` | Only larger than reserved memory, master server can work. default value : physical memory * 1/10, unit is G | `0.1` |
| `master.configmap.MASTER_LISTEN_PORT` | Master listen port | `5678` |
| `master.livenessProbe.enabled` | Turn on and off liveness probe | `true` |
| `master.livenessProbe.initialDelaySeconds` | Delay before liveness probe is initiated | `30` |
| `master.livenessProbe.periodSeconds` | How often to perform the probe | `30` |
| `master.livenessProbe.timeoutSeconds` | When the probe times out | `5` |
| `master.livenessProbe.failureThreshold` | Minimum consecutive successes for the probe | `3` |
| `master.livenessProbe.successThreshold` | Minimum consecutive failures for the probe | `1` |
| `master.readinessProbe.enabled` | Turn on and off readiness probe | `true` |
| `master.readinessProbe.initialDelaySeconds` | Delay before readiness probe is initiated | `30` |
| `master.readinessProbe.periodSeconds` | How often to perform the probe | `30` |
| `master.readinessProbe.timeoutSeconds` | When the probe times out | `5` |
| `master.readinessProbe.failureThreshold` | Minimum consecutive successes for the probe | `3` |
| `master.readinessProbe.successThreshold` | Minimum consecutive failures for the probe | `1` |
| `master.persistentVolumeClaim.enabled` | Set `master.persistentVolumeClaim.enabled` to `true` to mount a new volume for `master` | `false` |
| `master.persistentVolumeClaim.accessModes` | `PersistentVolumeClaim` Access Modes | `[ReadWriteOnce]` |
| `master.persistentVolumeClaim.storageClassName` | `Master` logs data Persistent Volume Storage Class. If set to "-", storageClassName: "", which disables dynamic provisioning | `-` |
| `master.persistentVolumeClaim.storage` | `PersistentVolumeClaim` Size | `20Gi` |
| | | |
| `worker.podManagementPolicy` | PodManagementPolicy controls how pods are created during initial scale up, when replacing pods on nodes, or when scaling down | `Parallel` |
| `worker.replicas` | Replicas is the desired number of replicas of the given Template | `3` |
| `worker.annotations` | The `annotations` for worker server | `{}` |
| `worker.affinity` | If specified, the pod's scheduling constraints | `{}` |
| `worker.nodeSelector` | NodeSelector is a selector which must be true for the pod to fit on a node | `{}` |
| `worker.tolerations` | If specified, the pod's tolerations | `{}` |
| `worker.resources` | The `resource` limit and request config for worker server | `{}` |
| `worker.configmap.DOLPHINSCHEDULER_OPTS` | The java options for worker server | `""` |
| `worker.configmap.WORKER_EXEC_THREADS` | Worker execute thread num | `100` |
| `worker.configmap.WORKER_HEARTBEAT_INTERVAL` | Worker heartbeat interval | `10` |
| `worker.configmap.WORKER_MAX_CPULOAD_AVG` | Only less than cpu avg load, worker server can work. default value : the number of cpu cores * 2 | `100` |
| `worker.configmap.WORKER_RESERVED_MEMORY` | Only larger than reserved memory, worker server can work. default value : physical memory * 1/10, unit is G | `0.1` |
| `worker.configmap.WORKER_LISTEN_PORT` | Worker listen port | `1234` |
| `worker.configmap.WORKER_GROUPS` | Worker groups | `default` |
| `worker.configmap.WORKER_WEIGHT` | Worker weight | `100` |
| `worker.livenessProbe.enabled` | Turn on and off liveness probe | `true` |
| `worker.livenessProbe.initialDelaySeconds` | Delay before liveness probe is initiated | `30` |
| `worker.livenessProbe.periodSeconds` | How often to perform the probe | `30` |
| `worker.livenessProbe.timeoutSeconds` | When the probe times out | `5` |
| `worker.livenessProbe.failureThreshold` | Minimum consecutive successes for the probe | `3` |
| `worker.livenessProbe.successThreshold` | Minimum consecutive failures for the probe | `1` |
| `worker.readinessProbe.enabled` | Turn on and off readiness probe | `true` |
| `worker.readinessProbe.initialDelaySeconds` | Delay before readiness probe is initiated | `30` |
| `worker.readinessProbe.periodSeconds` | How often to perform the probe | `30` |
| `worker.readinessProbe.timeoutSeconds` | When the probe times out | `5` |
| `worker.readinessProbe.failureThreshold` | Minimum consecutive successes for the probe | `3` |
| `worker.readinessProbe.successThreshold` | Minimum consecutive failures for the probe | `1` |
| `worker.persistentVolumeClaim.enabled` | Set `worker.persistentVolumeClaim.enabled` to `true` to enable `persistentVolumeClaim` for `worker` | `false` |
| `worker.persistentVolumeClaim.dataPersistentVolume.enabled` | Set `worker.persistentVolumeClaim.dataPersistentVolume.enabled` to `true` to mount a data volume for `worker` | `false` |
| `worker.persistentVolumeClaim.dataPersistentVolume.accessModes` | `PersistentVolumeClaim` Access Modes | `[ReadWriteOnce]` |
| `worker.persistentVolumeClaim.dataPersistentVolume.storageClassName` | `Worker` data Persistent Volume Storage Class. If set to "-", storageClassName: "", which disables dynamic provisioning | `-` |
| `worker.persistentVolumeClaim.dataPersistentVolume.storage` | `PersistentVolumeClaim` Size | `20Gi` |
| `worker.persistentVolumeClaim.logsPersistentVolume.enabled` | Set `worker.persistentVolumeClaim.logsPersistentVolume.enabled` to `true` to mount a logs volume for `worker` | `false` |
| `worker.persistentVolumeClaim.logsPersistentVolume.accessModes` | `PersistentVolumeClaim` Access Modes | `[ReadWriteOnce]` |
| `worker.persistentVolumeClaim.logsPersistentVolume.storageClassName` | `Worker` logs data Persistent Volume Storage Class. If set to "-", storageClassName: "", which disables dynamic provisioning | `-` |
| `worker.persistentVolumeClaim.logsPersistentVolume.storage` | `PersistentVolumeClaim` Size | `20Gi` |
| | | |
| `alert.replicas` | Replicas is the desired number of replicas of the given Template | `1` |
| `alert.strategy.type` | Type of deployment. Can be "Recreate" or "RollingUpdate" | `RollingUpdate` |
| `alert.strategy.rollingUpdate.maxSurge` | The maximum number of pods that can be scheduled above the desired number of pods | `25%` |
| `alert.strategy.rollingUpdate.maxUnavailable` | The maximum number of pods that can be unavailable during the update | `25%` |
| `alert.annotations` | The `annotations` for alert server | `{}` |
| `alert.affinity` | If specified, the pod's scheduling constraints | `{}` |
| `alert.nodeSelector` | NodeSelector is a selector which must be true for the pod to fit on a node | `{}` |
| `alert.tolerations` | If specified, the pod's tolerations | `{}` |
| `alert.resources` | The `resource` limit and request config for alert server | `{}` |
| `alert.configmap.DOLPHINSCHEDULER_OPTS` | The java options for alert server | `""` |
| `alert.configmap.ALERT_PLUGIN_DIR` | Alert plugin directory | `lib/plugin/alert` |
| `alert.livenessProbe.enabled` | Turn on and off liveness probe | `true` |
| `alert.livenessProbe.initialDelaySeconds` | Delay before liveness probe is initiated | `30` |
| `alert.livenessProbe.periodSeconds` | How often to perform the probe | `30` |
| `alert.livenessProbe.timeoutSeconds` | When the probe times out | `5` |
| `alert.livenessProbe.failureThreshold` | Minimum consecutive successes for the probe | `3` |
| `alert.livenessProbe.successThreshold` | Minimum consecutive failures for the probe | `1` |
| `alert.readinessProbe.enabled` | Turn on and off readiness probe | `true` |
| `alert.readinessProbe.initialDelaySeconds` | Delay before readiness probe is initiated | `30` |
| `alert.readinessProbe.periodSeconds` | How often to perform the probe | `30` |
| `alert.readinessProbe.timeoutSeconds` | When the probe times out | `5` |
| `alert.readinessProbe.failureThreshold` | Minimum consecutive successes for the probe | `3` |
| `alert.readinessProbe.successThreshold` | Minimum consecutive failures for the probe | `1` |
| `alert.persistentVolumeClaim.enabled` | Set `alert.persistentVolumeClaim.enabled` to `true` to mount a new volume for `alert` | `false` |
| `alert.persistentVolumeClaim.accessModes` | `PersistentVolumeClaim` Access Modes | `[ReadWriteOnce]` |
| `alert.persistentVolumeClaim.storageClassName` | `Alert` logs data Persistent Volume Storage Class. If set to "-", storageClassName: "", which disables dynamic provisioning | `-` |
| `alert.persistentVolumeClaim.storage` | `PersistentVolumeClaim` Size | `20Gi` |
| | | |
| `api.replicas` | Replicas is the desired number of replicas of the given Template | `1` |
| `api.strategy.type` | Type of deployment. Can be "Recreate" or "RollingUpdate" | `RollingUpdate` |
| `api.strategy.rollingUpdate.maxSurge` | The maximum number of pods that can be scheduled above the desired number of pods | `25%` |
| `api.strategy.rollingUpdate.maxUnavailable` | The maximum number of pods that can be unavailable during the update | `25%` |
| `api.annotations` | The `annotations` for api server | `{}` |
| `api.affinity` | If specified, the pod's scheduling constraints | `{}` |
| `api.nodeSelector` | NodeSelector is a selector which must be true for the pod to fit on a node | `{}` |
| `api.tolerations` | If specified, the pod's tolerations | `{}` |
| `api.resources` | The `resource` limit and request config for api server | `{}` |
| `api.configmap.DOLPHINSCHEDULER_OPTS` | The java options for api server | `""` |
| `api.livenessProbe.enabled` | Turn on and off liveness probe | `true` |
| `api.livenessProbe.initialDelaySeconds` | Delay before liveness probe is initiated | `30` |
| `api.livenessProbe.periodSeconds` | How often to perform the probe | `30` |
| `api.livenessProbe.timeoutSeconds` | When the probe times out | `5` |
| `api.livenessProbe.failureThreshold` | Minimum consecutive successes for the probe | `3` |
| `api.livenessProbe.successThreshold` | Minimum consecutive failures for the probe | `1` |
| `api.readinessProbe.enabled` | Turn on and off readiness probe | `true` |
| `api.readinessProbe.initialDelaySeconds` | Delay before readiness probe is initiated | `30` |
| `api.readinessProbe.periodSeconds` | How often to perform the probe | `30` |
| `api.readinessProbe.timeoutSeconds` | When the probe times out | `5` |
| `api.readinessProbe.failureThreshold` | Minimum consecutive successes for the probe | `3` |
| `api.readinessProbe.successThreshold` | Minimum consecutive failures for the probe | `1` |
| `api.persistentVolumeClaim.enabled` | Set `api.persistentVolumeClaim.enabled` to `true` to mount a new volume for `api` | `false` |
| `api.persistentVolumeClaim.accessModes` | `PersistentVolumeClaim` Access Modes | `[ReadWriteOnce]` |
| `api.persistentVolumeClaim.storageClassName` | `api` logs data Persistent Volume Storage Class. If set to "-", storageClassName: "", which disables dynamic provisioning | `-` |
| `api.persistentVolumeClaim.storage` | `PersistentVolumeClaim` Size | `20Gi` |
| | | |
| `ingress.enabled` | Enable ingress | `false` |
| `ingress.host` | Ingress host | `dolphinscheduler.org` |
| `ingress.path` | Ingress path | `/dolphinscheduler` |
| `ingress.tls.enabled` | Enable ingress tls | `false` |
| `ingress.tls.secretName` | Ingress tls secret name | `dolphinscheduler-tls` |
## FAQ
### How to use MySQL as the DolphinScheduler's database instead of PostgreSQL?
> Because of the commercial license, we cannot directly use the driver and client of MySQL.
>
> If you want to use MySQL, you can build a new image based on the `apache/dolphinscheduler` image as follows.
1. Download the MySQL driver [mysql-connector-java-5.1.49.jar](https://repo1.maven.org/maven2/mysql/mysql-connector-java/5.1.49/mysql-connector-java-5.1.49.jar) (require `>=5.1.47`)
2. Create a new `Dockerfile` to add MySQL driver and client:
```
FROM apache/dolphinscheduler:latest
COPY mysql-connector-java-5.1.49.jar /opt/dolphinscheduler/lib
RUN apk add --update --no-cache mysql-client
```
3. Build a new docker image including MySQL driver and client:
```
docker build -t apache/dolphinscheduler:mysql .
```
4. Push the docker image `apache/dolphinscheduler:mysql` to a docker registry
5. Modify image `registry` and `repository`, and update `tag` to `mysql` in `values.yaml`
6. Modify postgresql `enabled` to `false`
7. Modify externalDatabase (especially modify `host`, `username` and `password`):
```
externalDatabase:
type: "mysql"
driver: "com.mysql.jdbc.Driver"
host: "localhost"
port: "3306"
username: "root"
password: "root"
database: "dolphinscheduler"
params: "useUnicode=true&characterEncoding=UTF-8"
```
8. Run a DolphinScheduler release in Kubernetes (See **Installing the Chart**)
### How to support MySQL datasource in `Datasource manage`?
> Because of the commercial license, we cannot directly use the driver of MySQL.
>
> If you want to add MySQL datasource, you can build a new image based on the `apache/dolphinscheduler` image as follows.
1. Download the MySQL driver [mysql-connector-java-5.1.49.jar](https://repo1.maven.org/maven2/mysql/mysql-connector-java/5.1.49/mysql-connector-java-5.1.49.jar) (require `>=5.1.47`)
2. Create a new `Dockerfile` to add MySQL driver:
```
FROM apache/dolphinscheduler:latest
COPY mysql-connector-java-5.1.49.jar /opt/dolphinscheduler/lib
```
3. Build a new docker image including MySQL driver:
```
docker build -t apache/dolphinscheduler:mysql-driver .
```
4. Push the docker image `apache/dolphinscheduler:mysql-driver` to a docker registry
5. Modify image `registry` and `repository`, and update `tag` to `mysql-driver` in `values.yaml`
6. Run a DolphinScheduler release in Kubernetes (See **Installing the Chart**)
7. Add a MySQL datasource in `Datasource manage`
### How to support Oracle datasource in `Datasource manage`?
> Because of the commercial license, we cannot directly use the driver of Oracle.
>
> If you want to add Oracle datasource, you can build a new image based on the `apache/dolphinscheduler` image as follows.
1. Download the Oracle driver [ojdbc8.jar](https://repo1.maven.org/maven2/com/oracle/database/jdbc/ojdbc8/) (such as `ojdbc8-19.9.0.0.jar`)
2. Create a new `Dockerfile` to add Oracle driver:
```
FROM apache/dolphinscheduler:latest
COPY ojdbc8-19.9.0.0.jar /opt/dolphinscheduler/lib
```
3. Build a new docker image including Oracle driver:
```
docker build -t apache/dolphinscheduler:oracle-driver .
```
4. Push the docker image `apache/dolphinscheduler:oracle-driver` to a docker registry
5. Modify image `registry` and `repository`, and update `tag` to `oracle-driver` in `values.yaml`
6. Run a DolphinScheduler release in Kubernetes (See **Installing the Chart**)
7. Add a Oracle datasource in `Datasource manage`
For more information please refer to the [incubator-dolphinscheduler](https://github.com/apache/incubator-dolphinscheduler.git) documentation.