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YARN-7797. Docker host network can not obtain IP address for RegistryDNS. Contributed by Eric Yang

This commit is contained in:
Billie Rinaldi 2018-01-26 09:32:23 -08:00
parent 56872cff92
commit f2fa736f0a
1 changed files with 28 additions and 0 deletions
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28
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/runtime/DockerLinuxContainerRuntime.java
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@ -58,6 +58,8 @@
import org.apache.hadoop.yarn.server.nodemanager.containermanager.runtime.ContainerRuntimeConstants;
import org.apache.hadoop.yarn.server.nodemanager.containermanager.runtime.ContainerRuntimeContext;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.ArrayList;
@ -1013,6 +1015,32 @@ public String[] getIpAndHost(Container container) {
}
String ips = output.substring(0, index).trim();
String host = output.substring(index+1).trim();
if (ips.equals("")) {
String network;
try {
network = container.getLaunchContext().getEnvironment()
.get("YARN_CONTAINER_RUNTIME_DOCKER_CONTAINER_NETWORK");
if (network == null || network.isEmpty()) {
network = defaultNetwork;
}
} catch (NullPointerException e) {
network = defaultNetwork;
}
boolean useHostNetwork = network.equalsIgnoreCase("host");
if (useHostNetwork) {
// Report back node manager IP in the event where docker
// inspect reports no IP address. This is for bridging a gap for
// docker environment to run with host network.
InetAddress address;
try {
address = InetAddress.getLocalHost();
ips = address.getHostAddress();
} catch (UnknownHostException e) {
LOG.error("Can not determine IP for container:"
+ containerId);
}
}
}
String[] ipAndHost = new String[2];
ipAndHost[0] = ips;
ipAndHost[1] = host;