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Merge pull request apache-spark-on-k8s#137 from palantir/resync-kube-…
…upstream Resync kube upstream
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| --- | ||
| layout: global | ||
| title: Running Spark in the cloud with Kubernetes | ||
| --- | ||
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| For general information about running Spark on Kubernetes, refer to [running Spark on Kubernetes](running-on-kubernetes.md). | ||
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| A Kubernetes cluster may be brought up on different cloud providers or on premise. It is commonly provisioned through [Google Container Engine](https://cloud.google.com/container-engine/), or using [kops](https://github.com/kubernetes/kops) on AWS, or on premise using [kubeadm](https://kubernetes.io/docs/getting-started-guides/kubeadm/). | ||
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| ## Running on Google Container Engine (GKE) | ||
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| * Create a GKE [container cluster](https://cloud.google.com/container-engine/docs/clusters/operations). | ||
| * Obtain kubectl and [configure](https://cloud.google.com/container-engine/docs/clusters/operations#configuring_kubectl) it appropriately. | ||
| * Find the identity of the master associated with this project. | ||
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| > kubectl cluster-info | ||
| Kubernetes master is running at https://<master-ip>:443 | ||
| * Run spark-submit with the master option set to `k8s://https://<master-ip>:443`. The instructions for running spark-submit are provided in the [running on kubernetes](running-on-kubernetes.md) tutorial. | ||
| * Check that your driver pod, and subsequently your executor pods are launched using `kubectl get pods`. | ||
| * Read the stdout and stderr of the driver pod using `kubectl logs <name-of-driver-pod>`, or stream the logs using `kubectl logs -f <name-of-driver-pod>`. | ||
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| Known issues: | ||
| * If you face OAuth token expiry errors when you run spark-submit, it is likely because the token needs to be refreshed. The easiest way to fix this is to run any `kubectl` command, say, `kubectl version` and then retry your submission. |
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...ain/scala/org/apache/spark/deploy/kubernetes/DriverPodKubernetesCredentialsProvider.scala
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| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one or more | ||
| * contributor license agreements. See the NOTICE file distributed with | ||
| * this work for additional information regarding copyright ownership. | ||
| * The ASF licenses this file to You under the Apache License, Version 2.0 | ||
| * (the "License"); you may not use this file except in compliance with | ||
| * the License. You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package org.apache.spark.deploy.kubernetes | ||
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| import java.io.File | ||
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| import com.google.common.io.{BaseEncoding, Files} | ||
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| import org.apache.spark.SparkConf | ||
| import org.apache.spark.deploy.kubernetes.config._ | ||
| import org.apache.spark.deploy.rest.KubernetesCredentials | ||
| import org.apache.spark.internal.config.OptionalConfigEntry | ||
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| private[spark] class DriverPodKubernetesCredentialsProvider(sparkConf: SparkConf) { | ||
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| def get(): KubernetesCredentials = { | ||
| sparkConf.get(KUBERNETES_SERVICE_ACCOUNT_NAME).foreach { _ => | ||
| require(sparkConf.get(KUBERNETES_DRIVER_OAUTH_TOKEN).isEmpty, | ||
| "Cannot specify both a service account and a driver pod OAuth token.") | ||
| require(sparkConf.get(KUBERNETES_DRIVER_CA_CERT_FILE).isEmpty, | ||
| "Cannot specify both a service account and a driver pod CA cert file.") | ||
| require(sparkConf.get(KUBERNETES_DRIVER_CLIENT_KEY_FILE).isEmpty, | ||
| "Cannot specify both a service account and a driver pod client key file.") | ||
| require(sparkConf.get(KUBERNETES_DRIVER_CLIENT_CERT_FILE).isEmpty, | ||
| "Cannot specify both a service account and a driver pod client cert file.") | ||
| } | ||
| val oauthToken = sparkConf.get(KUBERNETES_DRIVER_OAUTH_TOKEN) | ||
| val caCertDataBase64 = safeFileConfToBase64(KUBERNETES_DRIVER_CA_CERT_FILE, | ||
| s"Driver CA cert file provided at %s does not exist or is not a file.") | ||
| val clientKeyDataBase64 = safeFileConfToBase64(KUBERNETES_DRIVER_CLIENT_KEY_FILE, | ||
| s"Driver client key file provided at %s does not exist or is not a file.") | ||
| val clientCertDataBase64 = safeFileConfToBase64(KUBERNETES_DRIVER_CLIENT_CERT_FILE, | ||
| s"Driver client cert file provided at %s does not exist or is not a file.") | ||
| val serviceAccountName = sparkConf.get(KUBERNETES_SERVICE_ACCOUNT_NAME) | ||
| KubernetesCredentials( | ||
| oauthToken = oauthToken, | ||
| caCertDataBase64 = caCertDataBase64, | ||
| clientKeyDataBase64 = clientKeyDataBase64, | ||
| clientCertDataBase64 = clientCertDataBase64) | ||
| } | ||
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| private def safeFileConfToBase64( | ||
| conf: OptionalConfigEntry[String], | ||
| fileNotFoundFormatString: String): Option[String] = { | ||
| sparkConf.get(conf) | ||
| .map(new File(_)) | ||
| .map { file => | ||
| require(file.isFile, String.format(fileNotFoundFormatString, file.getAbsolutePath)) | ||
| BaseEncoding.base64().encode(Files.toByteArray(file)) | ||
| } | ||
| } | ||
| } |
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