This repository was archived by the owner on Jan 9, 2020. It is now read-only.
Implements a server for refreshing HDFS tokens, a part of secure HDFS support. #453
There are no files selected for viewing
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| --- | ||
| layout: global | ||
| title: Hadoop Token Refresh Server on Kubernetes | ||
| --- | ||
|
|
||
| Spark on Kubernetes may use Kerberized Hadoop data sources such as secure HDFS or Kafka. If the job | ||
| runs for days or weeks, someone should extend the lifetime of Hadoop delegation tokens, which | ||
| expire every 24 hours. The Hadoop Token Refresh Server is a Kubernetes microservice that renews | ||
| token lifetime and puts the replacement tokens in place. | ||
|
|
||
| # Building the Refresh Server | ||
|
|
||
| To build the refresh server jar, simply run Maven. For example: | ||
|
|
||
| mvn clean package | ||
|
|
||
| The target directory will have a tarball that includes the project jar file as well as | ||
| 3rd party dependency jars. The tarball name would end with `-assembly.tar.gz`. For example: | ||
|
|
||
| target/token-refresh-server-kubernetes_2.11-2.2.0-k8s-0.3.0-SNAPSHOT-assembly.tar.gz | ||
|
|
||
| # Running the Refresh Server | ||
|
|
||
| To run the server, follow the steps below. | ||
|
|
||
| 1. Build and push the docker image: | ||
|
|
||
| docker build -t hadoop-token-refresh-server:latest \ | ||
| -f src/main/docker/Dockerfile . | ||
| docker tag hadoop-token-refresh-server:latest <YOUR-REPO>:<YOUR-TAG> | ||
| docker push <YOUR-REPO>:<YOUR-TAG> | ||
|
|
||
| 2. Create a k8s `configmap` containing Hadoop config files. This should enable Kerberos and secure Hadoop. | ||
| It should also include the Hadoop servers that would issue delegation tokens such as the HDFS namenode | ||
| address: | ||
|
|
||
| kubectl create configmap hadoop-token-refresh-server-hadoop-config \ | ||
| --from-file=/usr/local/hadoop/conf/core-site.xml | ||
|
|
||
| 3. Create another k8s `configmap` containing Kerberos config files. This should include | ||
| the kerberos server address and the correct realm name for Kerberos principals: | ||
|
|
||
| kubectl create configmap hadoop-token-refresh-server-kerberos-config \ | ||
| --from-file=/etc/krb5.conf | ||
|
|
||
| 4. Create a k8s `secret` containing the Kerberos keytab file. The keytab file should include | ||
| the password for the system user Kerberos principal that the refresh server is using to | ||
| extend Hadoop delegation tokens. | ||
|
|
||
| kubectl create secret generic hadoop-token-refresh-server-kerberos-keytab \ | ||
| --from-file /mnt/secrets/krb5.keytab | ||
|
|
||
| 5. Create a k8s `service account` and `clusterrolebinding` that the service pod will use. | ||
|
|
||
| The service account should have `edit` capability for job `secret`s that contains | ||
| the Hadoop delegation tokens. | ||
|
|
||
| 6. Finally, edit the config file for k8s `deployment` and launch the service pod | ||
| using the deployment. The config file should include the right docker image tag | ||
| and the correct k8s `service account` name. | ||
|
|
||
| kubectl create -f src/main/conf/kubernetes-hadoop-token-refresh-server.yaml | ||
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| <?xml version="1.0" encoding="UTF-8"?> | ||
| <!-- | ||
| ~ 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. | ||
| --> | ||
| <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> | ||
| <modelVersion>4.0.0</modelVersion> | ||
| <parent> | ||
| <groupId>org.apache.spark</groupId> | ||
| <artifactId>spark-parent_2.11</artifactId> | ||
| <version>2.2.0-k8s-0.5.0-SNAPSHOT</version> | ||
| <relativePath>../../../pom.xml</relativePath> | ||
| </parent> | ||
|
|
||
| <artifactId>token-refresh-server-kubernetes_2.11</artifactId> | ||
| <packaging>jar</packaging> | ||
| <name>Hadoop Token Refresh Server on Kubernetes</name> | ||
| <properties> | ||
| <akka.actor.version>2.5.4</akka.actor.version> | ||
| <commons-logging.version>1.2</commons-logging.version> | ||
| <kubernetes.client.version>2.2.13</kubernetes.client.version> | ||
| </properties> | ||
| <dependencies> | ||
| <dependency> | ||
| <groupId>com.typesafe.akka</groupId> | ||
| <artifactId>akka-actor_${scala.binary.version}</artifactId> | ||
| <version>${akka.actor.version}</version> | ||
| </dependency> | ||
| <dependency> | ||
| <groupId>io.fabric8</groupId> | ||
| <artifactId>kubernetes-client</artifactId> | ||
| <version>${kubernetes.client.version}</version> | ||
| </dependency> | ||
| <dependency> | ||
| <groupId>log4j</groupId> | ||
| <artifactId>log4j</artifactId> | ||
| </dependency> | ||
| <dependency> | ||
| <groupId>org.apache.hadoop</groupId> | ||
| <artifactId>hadoop-client</artifactId> | ||
| </dependency> | ||
| <dependency> | ||
| <groupId>commons-logging</groupId> | ||
| <artifactId>commons-logging</artifactId> | ||
| <version>${commons-logging.version}</version> | ||
| </dependency> | ||
| </dependencies> | ||
| <build> | ||
| <plugins> | ||
| <plugin> | ||
| <groupId>org.apache.maven.plugins</groupId> | ||
| <artifactId>maven-assembly-plugin</artifactId> | ||
| <configuration> | ||
| <descriptors> | ||
| <descriptor>src/main/assembly/assembly.xml</descriptor> | ||
| </descriptors> | ||
| </configuration> | ||
| <executions> | ||
| <execution> | ||
| <id>make-assembly</id> | ||
| <phase>package</phase> | ||
| <goals> | ||
| <goal>single</goal> | ||
| </goals> | ||
| </execution> | ||
| </executions> | ||
| </plugin> | ||
| </plugins> | ||
| </build> | ||
| </project> |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,33 @@ | ||
| <!-- | ||
| ~ 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. | ||
| --> | ||
| <assembly> | ||
| <id>assembly</id> | ||
| <formats> | ||
| <format>tar.gz</format> | ||
| </formats> | ||
| <includeBaseDirectory>false</includeBaseDirectory> | ||
| <dependencySets> | ||
| <dependencySet> | ||
| <unpack>false</unpack> | ||
| <scope>compile</scope> | ||
| </dependencySet> | ||
| <dependencySet> | ||
| <unpack>false</unpack> | ||
| <scope>provided</scope> | ||
| </dependencySet> | ||
| </dependencySets> | ||
| </assembly> |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,66 @@ | ||
| # | ||
| # 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. | ||
| # | ||
| --- | ||
| apiVersion: extensions/v1beta1 | ||
|
|
||
| kind: Deployment | ||
| metadata: | ||
| name: hadoop-token-refresh-server | ||
| spec: | ||
| replicas: 1 | ||
| template: | ||
| metadata: | ||
| labels: | ||
| hadoop-token-refresh-server-instance: default | ||
| spec: | ||
| serviceAccountName: YOUR-SERVICE-ACCOUNT | ||
| volumes: | ||
| - name: kerberos-config | ||
| configMap: | ||
| name: hadoop-token-refresh-server-kerberos-config | ||
| - name: hadoop-config | ||
| configMap: | ||
| name: hadoop-token-refresh-server-hadoop-config | ||
| - name: kerberos-keytab | ||
| secret: | ||
| secretName: hadoop-token-refresh-server-kerberos-keytab | ||
| containers: | ||
| - name: hadoop-token-refresh-server | ||
| image: YOUR-REPO:YOUR-TAG | ||
| env: | ||
| - name: HADOOP_CONF_DIR | ||
| value: /etc/hadoop/conf | ||
| - name: TOKEN_REFRESH_SERVER_ARGS | ||
| value: --verbose | ||
| resources: | ||
| requests: | ||
| cpu: 100m | ||
| memory: 512Mi | ||
| limits: | ||
| cpu: 100m | ||
| memory: 512Mi | ||
| volumeMounts: | ||
| - name: kerberos-config | ||
| mountPath: '/etc/krb5.conf' | ||
| subPath: krb5.conf | ||
| readOnly: true | ||
| - name: hadoop-config | ||
| mountPath: '/etc/hadoop/conf' | ||
| readOnly: true | ||
| - name: kerberos-keytab | ||
| mountPath: '/mnt/secrets/krb5.keytab' | ||
| subPath: krb5.keytab | ||
| readOnly: true | ||
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,43 @@ | ||
| # | ||
| # 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. | ||
| # | ||
|
|
||
| FROM openjdk:8-alpine | ||
|
|
||
|
|
||
| RUN apk upgrade --no-cache && \ | ||
| apk add --no-cache bash tini && \ | ||
| rm /bin/sh && \ | ||
| ln -sv /bin/bash /bin/sh && \ | ||
| chgrp root /etc/passwd && \ | ||
| chmod ug+rw /etc/passwd && \ | ||
| mkdir -p /opt/token-refresh-server && \ | ||
| mkdir -p /opt/token-refresh-server/jars && \ | ||
| mkdir -p /opt/token-refresh-server/work-dir | ||
|
|
||
| ADD target/token-refresh-server-kubernetes_2.11-2.2.0-k8s-0.3.0-SNAPSHOT-assembly.tar.gz \ | ||
|
There was a problem hiding this comment. deprecated version, update to newest k8s assembly jar |
||
| /opt/token-refresh-server/jars | ||
| WORKDIR /opt/token-refresh-server/work-dir | ||
|
|
||
| # The docker build command should be invoked from the top level directory of | ||
| # the token-refresh-server project. E.g.: | ||
| # docker build -t hadoop-token-refresh-server:latest \ | ||
| # -f src/main/docker/Dockerfile . | ||
|
|
||
| CMD /sbin/tini -s -- /usr/bin/java \ | ||
| -cp $HADOOP_CONF_DIR:'/opt/token-refresh-server/jars/*' \ | ||
| org.apache.spark.security.kubernetes.TokenRefreshServer \ | ||
| $TOKEN_REFRESH_SERVER_ARGS | ||
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,19 @@ | ||
| package org.apache.spark.security.kubernetes | ||
|
|
||
| import org.apache.log4j.{LogManager, Logger, Priority} | ||
|
|
||
| trait Logging { | ||
|
|
||
| private var log : Logger = LogManager.getLogger(this.getClass) | ||
|
|
||
| protected def logDebug(msg: => String) = if (log.isDebugEnabled) log.debug(msg) | ||
|
|
||
| protected def logInfo(msg: => String) = if (log.isInfoEnabled) log.info(msg) | ||
|
|
||
| protected def logWarning(msg: => String) = if (log.isEnabledFor(Priority.WARN)) log.warn(msg) | ||
|
|
||
| protected def logWarning(msg: => String, throwable: Throwable) = | ||
| if (log.isEnabledFor(Priority.WARN)) log.warn(msg, throwable) | ||
|
|
||
| protected def logError(msg: => String) = if (log.isEnabledFor(Priority.ERROR)) log.error(msg) | ||
| } |
Oops, something went wrong.
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
There was a problem hiding this comment.
Choose a reason for hiding this comment
The reason will be displayed to describe this comment to others. Learn more.
like Kerborized HDFS.