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YARN-7996. Allow user supplied Docker client configurations with YARN native services. Contributed by Shane Kumpf

This commit is contained in:
Jason Lowe 2018-04-17 08:57:31 -05:00
parent 86dfb70875
commit 1d6e43da51
10 changed files with 219 additions and 35 deletions
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3
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services-api/src/main/resources/definition/YARN-Simplified-V1-API-Layer-For-Services.yaml
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@ -251,6 +251,9 @@ definitions:
kerberos_principal:
description: The Kerberos Principal of the service
$ref: '#/definitions/KerberosPrincipal'
docker_client_config:
type: string
description: URI of the file containing the docker client configuration (e.g. hdfs:///tmp/config.json).
ResourceInformation:
description:
ResourceInformation determines unit/value of resource types in addition to memory and vcores. It will be part of Resource object.

45
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services-api/src/test/java/org/apache/hadoop/yarn/service/TestApiServer.java
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@ -19,6 +19,9 @@ package org.apache.hadoop.yarn.service;
import static org.junit.Assert.*;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.List;
@ -27,6 +30,7 @@ import javax.ws.rs.Path;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.Status;
import org.apache.commons.io.FileUtils;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.yarn.service.api.records.Artifact;
import org.apache.hadoop.yarn.service.api.records.Artifact.TypeEnum;
@ -90,7 +94,19 @@ public class TestApiServer {
}
@Test
public void testGoodCreateService() {
public void testGoodCreateService() throws Exception {
String json = "{\"auths\": "
+ "{\"https://index.docker.io/v1/\": "
+ "{\"auth\": \"foobarbaz\"},"
+ "\"registry.example.com\": "
+ "{\"auth\": \"bazbarfoo\"}}}";
File dockerTmpDir = new File("target", "docker-tmp");
FileUtils.deleteQuietly(dockerTmpDir);
dockerTmpDir.mkdirs();
String dockerConfig = dockerTmpDir + "/config.json";
BufferedWriter bw = new BufferedWriter(new FileWriter(dockerConfig));
bw.write(json);
bw.close();
Service service = new Service();
service.setName("jenkins");
service.setVersion("v1");
@ -115,6 +131,33 @@ public class TestApiServer {
actual.getStatus());
}
@Test
public void testInternalServerErrorDockerClientConfigMissingCreateService() {
Service service = new Service();
service.setName("jenkins");
service.setVersion("v1");
service.setDockerClientConfig("/does/not/exist/config.json");
Artifact artifact = new Artifact();
artifact.setType(TypeEnum.DOCKER);
artifact.setId("jenkins:latest");
Resource resource = new Resource();
resource.setCpus(1);
resource.setMemory("2048");
List<Component> components = new ArrayList<>();
Component c = new Component();
c.setName("jenkins");
c.setNumberOfContainers(1L);
c.setArtifact(artifact);
c.setLaunchCommand("");
c.setResource(resource);
components.add(c);
service.setComponents(components);
final Response actual = apiServer.createService(request, service);
assertEquals("Create service is ",
Response.status(Status.BAD_REQUEST).build().getStatus(),
actual.getStatus());
}
@Test
public void testBadGetService() {
final Response actual = apiServer.getService(request, "no-jenkins");

18
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services/hadoop-yarn-services-core/src/main/java/org/apache/hadoop/yarn/service/ServiceMaster.java
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@ -18,6 +18,7 @@
package org.apache.hadoop.yarn.service;
import com.google.common.annotations.VisibleForTesting;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.Options;
import org.apache.commons.lang3.StringUtils;
@ -89,8 +90,8 @@ public class ServiceMaster extends CompositeService {
fs.setAppDir(appDir);
loadApplicationJson(context, fs);
if (UserGroupInformation.isSecurityEnabled()) {
context.tokens = recordTokensForContainers();
if (UserGroupInformation.isSecurityEnabled()) {
doSecureLogin();
}
// Take yarn config from YarnFile and merge them into YarnConfiguration
@ -128,15 +129,10 @@ public class ServiceMaster extends CompositeService {
// Record the tokens and use them for launching containers.
// e.g. localization requires the hdfs delegation tokens
private ByteBuffer recordTokensForContainers() throws IOException {
@VisibleForTesting
protected ByteBuffer recordTokensForContainers() throws IOException {
Credentials copy = new Credentials(UserGroupInformation.getCurrentUser()
.getCredentials());
DataOutputBuffer dob = new DataOutputBuffer();
try {
copy.writeTokenStorageToStream(dob);
} finally {
dob.close();
}
// Now remove the AM->RM token so that task containers cannot access it.
Iterator<Token<?>> iter = copy.getAllTokens().iterator();
while (iter.hasNext()) {
@ -146,6 +142,12 @@ public class ServiceMaster extends CompositeService {
iter.remove();
}
}
DataOutputBuffer dob = new DataOutputBuffer();
try {
copy.writeTokenStorageToStream(dob);
} finally {
dob.close();
}
return ByteBuffer.wrap(dob.getData(), 0, dob.getLength());
}

24
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services/hadoop-yarn-services-core/src/main/java/org/apache/hadoop/yarn/service/api/records/Service.java
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@ -73,6 +73,7 @@ public class Service extends BaseResource {
private KerberosPrincipal kerberosPrincipal = new KerberosPrincipal();
private String version = null;
private String description = null;
private String dockerClientConfig = null;
/**
* A unique service name.
@ -370,6 +371,27 @@ public class Service extends BaseResource {
this.kerberosPrincipal = kerberosPrincipal;
}
@JsonProperty("docker_client_config")
@XmlElement(name = "docker_client_config")
@SuppressWarnings("checkstyle:hiddenfield")
public Service dockerClientConfig(String dockerClientConfig) {
this.dockerClientConfig = dockerClientConfig;
return this;
}
/**
* The Docker client config for the service.
* @return dockerClientConfig
*/
@ApiModelProperty(value = "The Docker client config for the service")
public String getDockerClientConfig() {
return dockerClientConfig;
}
public void setDockerClientConfig(String dockerClientConfig) {
this.dockerClientConfig = dockerClientConfig;
}
@Override
public boolean equals(java.lang.Object o) {
if (this == o) {
@ -414,6 +436,8 @@ public class Service extends BaseResource {
sb.append(" queue: ").append(toIndentedString(queue)).append("\n");
sb.append(" kerberosPrincipal: ")
.append(toIndentedString(kerberosPrincipal)).append("\n");
sb.append(" dockerClientConfig: ")
.append(toIndentedString(dockerClientConfig)).append("\n");
sb.append("}");
return sb.toString();
}

32
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services/hadoop-yarn-services-core/src/main/java/org/apache/hadoop/yarn/service/client/ServiceClient.java
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@ -79,6 +79,7 @@ import org.apache.hadoop.yarn.service.utils.ServiceRegistryUtils;
import org.apache.hadoop.yarn.service.utils.ServiceUtils;
import org.apache.hadoop.yarn.service.utils.SliderFileSystem;
import org.apache.hadoop.yarn.service.utils.ZookeeperUtils;
import org.apache.hadoop.yarn.util.DockerClientConfigHandler;
import org.apache.hadoop.yarn.util.Records;
import org.apache.hadoop.yarn.util.Times;
import org.slf4j.Logger;
@ -710,7 +711,7 @@ public class ServiceClient extends AppAdminClient implements SliderExitCodes,
amLaunchContext.setCommands(Collections.singletonList(cmdStr));
amLaunchContext.setEnvironment(env);
amLaunchContext.setLocalResources(localResources);
addHdfsDelegationTokenIfSecure(amLaunchContext);
addCredentials(amLaunchContext, app);
submissionContext.setAMContainerSpec(amLaunchContext);
yarnClient.submitApplication(submissionContext);
return submissionContext.getApplicationId();
@ -933,28 +934,37 @@ public class ServiceClient extends AppAdminClient implements SliderExitCodes,
return appDir;
}
private void addHdfsDelegationTokenIfSecure(ContainerLaunchContext amContext)
private void addCredentials(ContainerLaunchContext amContext, Service app)
throws IOException {
if (!UserGroupInformation.isSecurityEnabled()) {
return;
}
Credentials credentials = new Credentials();
Credentials allCreds = new Credentials();
// HDFS DT
if (UserGroupInformation.isSecurityEnabled()) {
String tokenRenewer = YarnClientUtils.getRmPrincipal(getConfig());
if (StringUtils.isEmpty(tokenRenewer)) {
throw new IOException(
"Can't get Master Kerberos principal for the RM to use as renewer");
}
// Get hdfs dt
final org.apache.hadoop.security.token.Token<?>[] tokens =
fs.getFileSystem().addDelegationTokens(tokenRenewer, credentials);
fs.getFileSystem().addDelegationTokens(tokenRenewer, allCreds);
if (LOG.isDebugEnabled()) {
if (tokens != null && tokens.length != 0) {
for (Token<?> token : tokens) {
LOG.debug("Got DT: " + token);
}
}
}
}
if (!StringUtils.isEmpty(app.getDockerClientConfig())) {
allCreds.addAll(DockerClientConfigHandler.readCredentialsFromConfigFile(
new Path(app.getDockerClientConfig()), getConfig(), app.getName()));
}
if (allCreds.numberOfTokens() > 0) {
DataOutputBuffer dob = new DataOutputBuffer();
credentials.writeTokenStorageToStream(dob);
ByteBuffer fsTokens = ByteBuffer.wrap(dob.getData(), 0, dob.getLength());
amContext.setTokens(fsTokens);
allCreds.writeTokenStorageToStream(dob);
ByteBuffer tokens = ByteBuffer.wrap(dob.getData(), 0, dob.getLength());
amContext.setTokens(tokens);
}
}

21
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services/hadoop-yarn-services-core/src/main/java/org/apache/hadoop/yarn/service/utils/ServiceApiUtil.java
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@ -116,6 +116,13 @@ public class ServiceApiUtil {
}
}
// Validate the Docker client config.
try {
validateDockerClientConfiguration(service, conf);
} catch (IOException e) {
throw new IllegalArgumentException(e);
}
// Validate there are no component name collisions (collisions are not
// currently supported) and add any components from external services
Configuration globalConf = service.getConfiguration();
@ -214,6 +221,20 @@ public class ServiceApiUtil {
}
}
private static void validateDockerClientConfiguration(Service service,
org.apache.hadoop.conf.Configuration conf) throws IOException {
String dockerClientConfig = service.getDockerClientConfig();
if (!StringUtils.isEmpty(dockerClientConfig)) {
Path dockerClientConfigPath = new Path(dockerClientConfig);
FileSystem fs = dockerClientConfigPath.getFileSystem(conf);
if (!fs.exists(dockerClientConfigPath)) {
throw new IOException(
"The supplied Docker client config does not exist: "
+ dockerClientConfig);
}
}
}
private static void validateComponent(Component comp, FileSystem fs,
org.apache.hadoop.conf.Configuration conf)
throws IOException {

25
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services/hadoop-yarn-services-core/src/test/java/org/apache/hadoop/yarn/service/MockServiceAM.java
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@ -21,11 +21,13 @@ package org.apache.hadoop.yarn.service;
import com.google.common.base.Supplier;
import com.google.common.collect.Lists;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.DataOutputBuffer;
import org.apache.hadoop.registry.client.api.RegistryOperations;
import org.apache.hadoop.registry.client.binding.RegistryPathUtils;
import org.apache.hadoop.registry.client.types.ServiceRecord;
import org.apache.hadoop.registry.client.types.yarn.PersistencePolicies;
import org.apache.hadoop.registry.client.types.yarn.YarnRegistryAttributes;
import org.apache.hadoop.security.Credentials;
import org.apache.hadoop.test.GenericTestUtils;
import org.apache.hadoop.yarn.api.protocolrecords.AllocateResponse;
import org.apache.hadoop.yarn.api.protocolrecords.RegisterApplicationMasterResponse;
@ -60,6 +62,7 @@ import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedList;
@ -96,11 +99,19 @@ public class MockServiceAM extends ServiceMaster {
private Map<ContainerId, ContainerStatus> containerStatuses =
new ConcurrentHashMap<>();
private Credentials amCreds;
public MockServiceAM(Service service) {
super(service.getName());
this.service = service;
}
public MockServiceAM(Service service, Credentials amCreds) {
super(service.getName());
this.service = service;
this.amCreds = amCreds;
}
@Override
protected ContainerId getAMContainerId()
throws BadClusterStateException {
@ -385,4 +396,18 @@ public class MockServiceAM extends ServiceMaster {
containerStatuses.put(container.getId(), status);
}
@Override
protected ByteBuffer recordTokensForContainers()
throws IOException {
DataOutputBuffer dob = new DataOutputBuffer();
if (amCreds == null) {
return ByteBuffer.wrap(dob.getData(), 0, dob.getLength());
}
try {
amCreds.writeTokenStorageToStream(dob);
} finally {
dob.close();
}
return ByteBuffer.wrap(dob.getData(), 0, dob.getLength());
}
}

50
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-services/hadoop-yarn-services-core/src/test/java/org/apache/hadoop/yarn/service/TestServiceAM.java
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@ -21,6 +21,10 @@ package org.apache.hadoop.yarn.service;
import com.google.common.collect.ImmutableMap;
import org.apache.commons.io.FileUtils;
import org.apache.curator.test.TestingCluster;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.security.Credentials;
import org.apache.hadoop.security.token.Token;
import org.apache.hadoop.security.token.TokenIdentifier;
import org.apache.hadoop.test.GenericTestUtils;
import org.apache.hadoop.yarn.api.protocolrecords.ResourceTypes;
import org.apache.hadoop.yarn.api.records.ApplicationId;
@ -29,6 +33,7 @@ import org.apache.hadoop.yarn.api.records.ResourceTypeInfo;
import org.apache.hadoop.yarn.client.api.AMRMClient;
import org.apache.hadoop.yarn.client.api.async.AMRMClientAsync;
import org.apache.hadoop.yarn.conf.YarnConfiguration;
import org.apache.hadoop.yarn.security.DockerCredentialTokenIdentifier;
import org.apache.hadoop.yarn.service.api.records.Component;
import org.apache.hadoop.yarn.service.api.records.ResourceInformation;
import org.apache.hadoop.yarn.service.api.records.Service;
@ -36,6 +41,7 @@ import org.apache.hadoop.yarn.service.component.ComponentState;
import org.apache.hadoop.yarn.service.component.instance.ComponentInstance;
import org.apache.hadoop.yarn.service.component.instance.ComponentInstanceState;
import org.apache.hadoop.yarn.service.conf.YarnServiceConf;
import org.apache.hadoop.yarn.util.DockerClientConfigHandler;
import org.apache.hadoop.yarn.util.resource.ResourceUtils;
import org.junit.After;
import org.junit.Assert;
@ -44,14 +50,18 @@ import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.concurrent.TimeoutException;
import static org.apache.hadoop.registry.client.api.RegistryConstants.KEY_REGISTRY_ZK_QUORUM;
import static org.junit.Assert.assertEquals;
public class TestServiceAM extends ServiceTestUtils{
@ -294,4 +304,44 @@ public class TestServiceAM extends ServiceTestUtils{
am.stop();
}
@Test
public void testRecordTokensForContainers() throws Exception {
ApplicationId applicationId = ApplicationId.newInstance(123456, 1);
Service exampleApp = new Service();
exampleApp.setId(applicationId.toString());
exampleApp.setName("testContainerCompleted");
exampleApp.addComponent(createComponent("compa", 1, "pwd"));
String json = "{\"auths\": "
+ "{\"https://index.docker.io/v1/\": "
+ "{\"auth\": \"foobarbaz\"},"
+ "\"registry.example.com\": "
+ "{\"auth\": \"bazbarfoo\"}}}";
File dockerTmpDir = new File("target", "docker-tmp");
FileUtils.deleteQuietly(dockerTmpDir);
dockerTmpDir.mkdirs();
String dockerConfig = dockerTmpDir + "/config.json";
BufferedWriter bw = new BufferedWriter(new FileWriter(dockerConfig));
bw.write(json);
bw.close();
Credentials dockerCred =
DockerClientConfigHandler.readCredentialsFromConfigFile(
new Path(dockerConfig), conf, applicationId.toString());
MockServiceAM am = new MockServiceAM(exampleApp, dockerCred);
ByteBuffer amCredBuffer = am.recordTokensForContainers();
Credentials amCreds =
DockerClientConfigHandler.getCredentialsFromTokensByteBuffer(
amCredBuffer);
assertEquals(2, amCreds.numberOfTokens());
for (Token<? extends TokenIdentifier> tk : amCreds.getAllTokens()) {
Assert.assertTrue(
tk.getKind().equals(DockerCredentialTokenIdentifier.KIND));
}
am.stop();
}
}

9
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/util/DockerClientConfigHandler.java
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@ -119,7 +119,8 @@ public final class DockerClientConfigHandler {
credentials.addToken(
new Text(registryUrl + "-" + applicationId), token);
if (LOG.isDebugEnabled()) {
LOG.debug("Added token: " + token.toString());
LOG.debug("Token read from Docker client configuration file: "
+ token.toString());
}
}
}
@ -142,7 +143,7 @@ public final class DockerClientConfigHandler {
tokens.rewind();
if (LOG.isDebugEnabled()) {
for (Token token : credentials.getAllTokens()) {
LOG.debug("Added token: " + token.toString());
LOG.debug("Token read from token storage: " + token.toString());
}
}
return credentials;
@ -161,9 +162,11 @@ public final class DockerClientConfigHandler {
ObjectMapper mapper = new ObjectMapper();
ObjectNode rootNode = mapper.createObjectNode();
ObjectNode registryUrlNode = mapper.createObjectNode();
boolean foundDockerCred = false;
if (credentials.numberOfTokens() > 0) {
for (Token<? extends TokenIdentifier> tk : credentials.getAllTokens()) {
if (tk.getKind().equals(DockerCredentialTokenIdentifier.KIND)) {
foundDockerCred = true;
DockerCredentialTokenIdentifier ti =
(DockerCredentialTokenIdentifier) tk.decodeIdentifier();
ObjectNode registryCredNode = mapper.createObjectNode();
@ -176,9 +179,11 @@ public final class DockerClientConfigHandler {
}
}
}
if (foundDockerCred) {
rootNode.put(CONFIG_AUTHS_KEY, registryUrlNode);
String json =
mapper.writerWithDefaultPrettyPrinter().writeValueAsString(rootNode);
FileUtils.writeStringToFile(outConfigFile, json, StandardCharsets.UTF_8);
}
}
}

1
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/yarn-service/YarnServiceAPI.md
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@ -403,6 +403,7 @@ a service resource has the following attributes.
|quicklinks|A blob of key-value pairs of quicklinks to be exported for a service.|false|object||
|queue|The YARN queue that this service should be submitted to.|false|string||
|kerberos_principal | The principal info of the user who launches the service|false|KerberosPrincipal||
|docker_client_config|URI of the file containing the docker client configuration (e.g. hdfs:///tmp/config.json)|false|string||
### ServiceState