Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/2739#discussion_r19250068
--- Diff: core/src/main/scala/org/apache/spark/SSLOptions.scala ---
@@ -0,0 +1,188 @@
+/*
+ * 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
+
+import java.io.{FileReader, File}
+import java.nio.file.Paths
+import java.util.Properties
+
+import com.typesafe.config.{Config, ConfigFactory, ConfigValueFactory}
+import org.apache.commons.io.FilenameUtils
+import org.eclipse.jetty.util.ssl.SslContextFactory
+
+import scala.util.Try
+
+case class SSLOptions(enabled: Boolean = false,
+ keyStore: Option[File] = None,
+ keyStorePassword: Option[String] = None,
+ keyPassword: Option[String] = None,
+ trustStore: Option[File] = None,
+ trustStorePassword: Option[String] = None,
+ protocol: Option[String] = None,
+ enabledAlgorithms: Set[String] = Set.empty) {
+
+ /**
+ * Creates a Jetty SSL context factory according to the SSL settings
represented by this object.
+ */
+ def createJettySslContextFactory(): Option[SslContextFactory] = {
+ if (enabled) {
+ val sslContextFactory = new SslContextFactory()
+
+ keyStore.foreach(file =>
sslContextFactory.setKeyStorePath(file.getAbsolutePath))
+ trustStore.foreach(file =>
sslContextFactory.setTrustStore(file.getAbsolutePath))
+ keyStorePassword.foreach(sslContextFactory.setKeyStorePassword)
+ trustStorePassword.foreach(sslContextFactory.setTrustStorePassword)
+ keyPassword.foreach(sslContextFactory.setKeyManagerPassword)
+ protocol.foreach(sslContextFactory.setProtocol)
+ sslContextFactory.setIncludeCipherSuites(enabledAlgorithms.toSeq: _*)
+
+ Some(sslContextFactory)
+ } else {
+ None
+ }
+ }
+
+ /**
+ * Creates an Akka configuration object which contains all the SSL
settings represented by this
+ * object. It can be used then to compose the ultimate Akka
configuration.
+ */
+ def createAkkaConfig: Option[Config] = {
+ import scala.collection.JavaConversions._
+ if (enabled) {
+ Some(ConfigFactory.empty()
+ .withValue("akka.remote.netty.tcp.security.key-store",
+
ConfigValueFactory.fromAnyRef(keyStore.map(_.getAbsolutePath).getOrElse("")))
+ .withValue("akka.remote.netty.tcp.security.key-store-password",
+ ConfigValueFactory.fromAnyRef(keyStorePassword.getOrElse("")))
+ .withValue("akka.remote.netty.tcp.security.trust-store",
+
ConfigValueFactory.fromAnyRef(trustStore.map(_.getAbsolutePath).getOrElse("")))
+ .withValue("akka.remote.netty.tcp.security.trust-store-password",
+ ConfigValueFactory.fromAnyRef(trustStorePassword.getOrElse("")))
+ .withValue("akka.remote.netty.tcp.security.key-password",
+ ConfigValueFactory.fromAnyRef(keyPassword.getOrElse("")))
+
.withValue("akka.remote.netty.tcp.security.random-number-generator",
+ ConfigValueFactory.fromAnyRef(""))
+ .withValue("akka.remote.netty.tcp.security.protocol",
+ ConfigValueFactory.fromAnyRef(protocol.getOrElse("")))
+ .withValue("akka.remote.netty.tcp.security.enabled-algorithms",
+ ConfigValueFactory.fromIterable(enabledAlgorithms.toSeq))
+ .withValue("akka.remote.netty.tcp.enable-ssl",
+ ConfigValueFactory.fromAnyRef(true)))
+ } else {
+ None
+ }
+ }
+
+}
+
+object SSLOptions extends Logging {
+
+ /**
+ * Resolves the SSL configuration file location by checking:
+ * - SPARK_SSL_CONFIG_FILE env variable
--- End diff --
That's the tricky part on anything non-Yarn (to be frank, I'm not 100%
familiar with how those others work).
Basically what you need is a two step process:
- launcher talks to cluster manager, makes needed resources available
somehow.
- executors are launched and either those resources are available, or it
gets them from the launcher.
On Yarn, this works using the distributed cache. The Yarn client will
upload whatever files you ask to Yarn (see ClientBase.scala, I think the method
is `prepareLocalResources` or something), and they'll be available for the
executors when they launch. So there's very little to do here: executors pick
needed files (trust store, cert) from their working dir, and SSL options are
passed to the executors on the command line (like other akka options today).
If something like the distributed cache is not available, it does become a
little trickier. Basically, the executor needs to launch, download needed
resources from the launcher, and only then start Akka. You can pass ssl options
on the command line of the executor if needed, but no files, so it should be
able to connect back to the HTTP server running in the launcher to download
resources.
If that's not possible (or too hard today), I'm okay with punting that to a
different task and requiring the trust store / cert to be available on all
hosts for non-Yarn modes. But I really think we should support automatically
distributing the SSL conf in Yarn mode, since it should be pretty
straight-forward.
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