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YARN-8986. Added port publish for Docker container running with bridge network. 

Contributed by Charo Zhang
This commit is contained in:
Eric Yang 2018-11-26 19:45:05 -05:00
parent 0d8406135f
commit 33e0df4b35
7 changed files with 189 additions and 20 deletions
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26
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
View File

@ -123,6 +123,13 @@
* property.
* </li>
* <li>
* {@code YARN_CONTAINER_RUNTIME_DOCKER_PORTS_MAPPING} allows users to
* specify ports mapping for the bridge network Docker container. The value
* of the environment variable should be a comma-separated list of ports
* mapping. It's the same to "-p" option for the Docker run command. If the
* value is empty, "-P" will be added.
* </li>
* <li>
* {@code YARN_CONTAINER_RUNTIME_DOCKER_CONTAINER_PID_NAMESPACE}
* controls which PID namespace will be used by the Docker container. By
* default, each Docker container has its own PID namespace. To share the
@ -210,6 +217,10 @@ public class DockerLinuxContainerRuntime implements LinuxContainerRuntime {
"(:(r[ow]|(r[ow][+])?(r?shared|r?slave|r?private)))?(?:,|$)");
private static final Pattern TMPFS_MOUNT_PATTERN = Pattern.compile(
"^/[^:\\x00]+$");
public static final String PORTS_MAPPING_PATTERN =
"^:[0-9]+|^[0-9]+:[0-9]+|^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]" +
"|25[0-5])\\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])" +
":[0-9]+:[0-9]+$";
private static final int HOST_NAME_LENGTH = 64;
private static final String DEFAULT_PROCFS = "/proc";
@ -241,6 +252,9 @@ public class DockerLinuxContainerRuntime implements LinuxContainerRuntime {
public static final String ENV_DOCKER_CONTAINER_DELAYED_REMOVAL =
"YARN_CONTAINER_RUNTIME_DOCKER_DELAYED_REMOVAL";
@InterfaceAudience.Private
public static final String ENV_DOCKER_CONTAINER_PORTS_MAPPING =
"YARN_CONTAINER_RUNTIME_DOCKER_PORTS_MAPPING";
@InterfaceAudience.Private
public static final String ENV_DOCKER_CONTAINER_YARN_SYSFS =
"YARN_CONTAINER_RUNTIME_YARN_SYSFS_ENABLE";
public static final String YARN_SYSFS_PATH =
@ -873,6 +887,18 @@ public void launchContainer(ContainerRuntimeContext ctx)
setHostname(runCommand, containerIdStr, network, hostname);
// Add ports mapping value.
if (environment.containsKey(ENV_DOCKER_CONTAINER_PORTS_MAPPING)) {
String portsMapping = environment.get(ENV_DOCKER_CONTAINER_PORTS_MAPPING);
for (String mapping:portsMapping.split(",")) {
if (!Pattern.matches(PORTS_MAPPING_PATTERN, mapping)) {
throw new ContainerExecutionException(
"Invalid port mappings: " + mapping);
}
runCommand.addPortsMapping(mapping);
}
}
runCommand.setCapabilities(capabilities);
runCommand.addAllReadWriteMountLocations(containerLogDirs);

6
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/runtime/docker/DockerRunCommand.java
View File

@ -159,6 +159,12 @@ public DockerRunCommand disableDetach() {
return this;
}
/* Ports mapping for bridge network, -p */
public DockerRunCommand addPortsMapping(String mapping) {
super.addCommandArguments("ports-mapping", mapping);
return this;
}
public DockerRunCommand groupAdd(String[] groups) {
super.addCommandArguments("group-add", String.join(",", groups));
return this;

72
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/native/container-executor/impl/utils/docker-util.c
View File

@ -167,6 +167,13 @@ static int is_volume_name(const char *volume_name) {
return execute_regex_match(regex_str, volume_name) == 0;
}
static int is_valid_ports_mapping(const char *ports_mapping) {
const char *regex_str = "^:[0-9]+|^[0-9]+:[0-9]+|^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\\.)"
"{3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5]):[0-9]+:[0-9]+$";
// execute_regex_match return 0 is matched success
return execute_regex_match(regex_str, ports_mapping) == 0;
}
static int is_volume_name_matched_by_regex(const char* requested, const char* pattern) {
// execute_regex_match return 0 is matched success
return is_volume_name(requested) && (execute_regex_match(pattern + sizeof("regex:"), requested) == 0);
@ -314,6 +321,8 @@ const char *get_docker_error_message(const int error_code) {
return "Unknown docker command";
case INVALID_DOCKER_NETWORK:
return "Invalid docker network";
case INVALID_DOCKER_PORTS_MAPPING:
return "Invalid docker ports mapping";
case INVALID_DOCKER_CAPABILITY:
return "Invalid docker capability";
case PRIVILEGED_CONTAINERS_DISABLED:
@ -936,6 +945,64 @@ static int set_network(const struct configuration *command_config,
return ret;
}
static int add_ports_mapping_to_command(const struct configuration *command_config, args *args) {
int i = 0, ret = 0;
char *network_type = (char*) malloc(128);
char *docker_network_command = NULL;
char *docker_binary = get_docker_binary(command_config);
char *network_name = get_configuration_value("net", DOCKER_COMMAND_FILE_SECTION, command_config);
char **ports_mapping_values = get_configuration_values_delimiter("ports-mapping", DOCKER_COMMAND_FILE_SECTION, command_config, ",");
if (network_name != NULL) {
docker_network_command = make_string("%s network inspect %s --format='{{.Driver}}'", docker_binary, network_name);
FILE* docker_network = popen(docker_network_command, "r");
ret = fscanf(docker_network, "%s", network_type);
if (pclose (docker_network) != 0 || ret <= 0) {
fprintf (ERRORFILE, "Could not inspect docker network to get type %s.\n", docker_network_command);
goto cleanup;
}
// other network type exit successfully without ports mapping
if (strcasecmp(network_type, "bridge") != 0) {
ret = 0;
goto cleanup;
}
// add -P when not configure ports mapping
if (ports_mapping_values == NULL) {
ret = add_to_args(args, "-P");
if (ret != 0) {
ret = BUFFER_TOO_SMALL;
}
}
}
// add -p when configure ports mapping
if (ports_mapping_values != NULL) {
for (i = 0; ports_mapping_values[i] != NULL; i++) {
if (!is_valid_ports_mapping(ports_mapping_values[i])) {
fprintf (ERRORFILE, "Invalid port mappings: %s.\n", ports_mapping_values[i]);
ret = INVALID_DOCKER_PORTS_MAPPING;
break;
}
ret = add_to_args(args, "-p");
if (ret != 0) {
ret = BUFFER_TOO_SMALL;
break;
}
ret = add_to_args(args, ports_mapping_values[i]);
if (ret != 0) {
ret = BUFFER_TOO_SMALL;
break;
}
}
}
cleanup:
free(network_type);
free(docker_binary);
free(network_name);
free(docker_network_command);
free_values(ports_mapping_values);
return ret;
}
static int set_pid_namespace(const struct configuration *command_config,
const struct configuration *conf, args *args) {
char *value = get_configuration_value("pid", DOCKER_COMMAND_FILE_SECTION,
@ -1550,6 +1617,11 @@ int get_docker_run_command(const char *command_file, const struct configuration
goto free_and_exit;
}
ret = add_ports_mapping_to_command(&command_config, args);
if (ret != 0) {
goto free_and_exit;
}
ret = set_pid_namespace(&command_config, conf, args);
if (ret != 0) {
goto free_and_exit;

1
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/native/container-executor/impl/utils/docker-util.h
View File

@ -53,6 +53,7 @@ enum docker_error_codes {
INVALID_DOCKER_INSPECT_FORMAT,
UNKNOWN_DOCKER_COMMAND,
INVALID_DOCKER_NETWORK,
INVALID_DOCKER_PORTS_MAPPING,
INVALID_DOCKER_CAPABILITY,
PRIVILEGED_CONTAINERS_DISABLED,
INVALID_DOCKER_MOUNT,

94
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/native/container-executor/test/utils/test_docker_util.cc
View File

@ -502,6 +502,65 @@ namespace ContainerExecutor {
free_configuration(&container_cfg);
}
TEST_F(TestDockerUtil, test_add_ports_mapping_to_command) {
struct args buff = ARGS_INITIAL_VALUE;
int ret = 0;
std::vector<std::pair<std::string, std::string> > file_cmd_vec;
file_cmd_vec.push_back(std::make_pair<std::string, std::string>(
"[docker-command-execution]\n docker-command=run\n ports-mapping=127.0.0.1:8080:80,1234:1234,:2222",
"-p 127.0.0.1:8080:80 -p 1234:1234 -p :2222"));
file_cmd_vec.push_back(std::make_pair<std::string, std::string>(
"[docker-command-execution]\n docker-command=run\n ports-mapping=1234:1234,:2222",
"-p 1234:1234 -p :2222"));
file_cmd_vec.push_back(std::make_pair<std::string, std::string>(
"[docker-command-execution]\n docker-command=run\n ports-mapping=:2222", "-p :2222"));
std::vector<std::pair<std::string, std::string> >::const_iterator itr;
for (itr = file_cmd_vec.begin(); itr != file_cmd_vec.end(); ++itr) {
struct configuration cmd_cfg;
write_command_file(itr->first);
ret = read_config(docker_command_file.c_str(), &cmd_cfg);
if (ret != 0) {
FAIL();
}
ret = add_ports_mapping_to_command(&cmd_cfg, &buff);
char *actual = flatten(&buff);
ASSERT_EQ(0, ret) << "error message: " << get_docker_error_message(ret) << " for input " << itr->first;
ASSERT_STREQ(itr->second.c_str(), actual);
reset_args(&buff);
free(actual);
free_configuration(&cmd_cfg);
}
struct configuration cmd_cfg_1;
write_command_file("[docker-command-execution]\n docker-command=run\n ports-mapping=327.0.0.1:8080:80,1234:1234,:2222");
ret = read_config(docker_command_file.c_str(), &cmd_cfg_1);
if (ret != 0) {
FAIL();
}
ret = add_ports_mapping_to_command(&cmd_cfg_1, &buff);
ASSERT_EQ(INVALID_DOCKER_PORTS_MAPPING, ret);
reset_args(&buff);
write_command_file("[docker-command-execution]\n docker-command=run\n ports-mapping=127.0.0.1:8080:80,12s4:1234,:2222");
ret = read_config(docker_command_file.c_str(), &cmd_cfg_1);
if (ret != 0) {
FAIL();
}
ret = add_ports_mapping_to_command(&cmd_cfg_1, &buff);
ASSERT_EQ(INVALID_DOCKER_PORTS_MAPPING, ret);
reset_args(&buff);
write_command_file("[docker-command-execution]\n docker-command=run\n ports-mapping=127.0.0.1:8080:80,1234:1234,:s2s2");
ret = read_config(docker_command_file.c_str(), &cmd_cfg_1);
if (ret != 0) {
FAIL();
}
ret = add_ports_mapping_to_command(&cmd_cfg_1, &buff);
ASSERT_EQ(INVALID_DOCKER_PORTS_MAPPING, ret);
reset_args(&buff);
free_configuration(&cmd_cfg_1);
}
TEST_F(TestDockerUtil, test_set_pid_namespace) {
struct configuration container_cfg, cmd_cfg;
struct args buff = ARGS_INITIAL_VALUE;
@ -1305,10 +1364,10 @@ namespace ContainerExecutor {
"[docker-command-execution]\n"
" docker-command=run\n name=container_e1_12312_11111_02_000001\n image=hadoop/docker-image\n user=nobody\n hostname=host-id\n"
" mounts=/var/log:/var/log:ro,/var/lib:/lib:ro,/usr/bin/cut:/usr/bin/cut:ro,/tmp:/tmp:rw\n"
" network=bridge\n devices=/dev/test:/dev/test\n net=bridge\n"
" network=bridge\n devices=/dev/test:/dev/test\n"
" cap-add=CHOWN,SETUID\n cgroup-parent=ctr-cgroup\n detach=true\n rm=true\n"
" launch-command=bash,test_script.sh,arg1,arg2",
"run --name=container_e1_12312_11111_02_000001 --user=nobody -d --rm --net=bridge -v /var/log:/var/log:ro -v /var/lib:/lib:ro"
"run --name=container_e1_12312_11111_02_000001 --user=nobody -d --rm -v /var/log:/var/log:ro -v /var/lib:/lib:ro"
" -v /usr/bin/cut:/usr/bin/cut:ro -v /tmp:/tmp:rw --cgroup-parent=ctr-cgroup --cap-drop=ALL --cap-add=CHOWN "
"--cap-add=SETUID --hostname=host-id --device=/dev/test:/dev/test hadoop/docker-image bash"
" test_script.sh arg1 arg2"));
@ -1316,10 +1375,9 @@ namespace ContainerExecutor {
"[docker-command-execution]\n"
" docker-command=run\n name=container_e1_12312_11111_02_000001\n image=nothadoop/docker-image\n user=nobody\n hostname=host-id\n"
" mounts=/var/log:/var/log:ro,/var/lib:/lib:ro,/usr/bin/cut:/usr/bin/cut:ro,/tmp:/tmp:rw\n"
" network=bridge\n net=bridge\n"
" cap-add=CHOWN,SETUID\n cgroup-parent=ctr-cgroup\n detach=true\n rm=true\n"
" network=bridge\n cap-add=CHOWN,SETUID\n cgroup-parent=ctr-cgroup\n detach=true\n rm=true\n"
" launch-command=bash,test_script.sh,arg1,arg2",
"run --name=container_e1_12312_11111_02_000001 --user=nobody -d --rm --net=bridge"
"run --name=container_e1_12312_11111_02_000001 --user=nobody -d --rm"
" --cgroup-parent=ctr-cgroup --cap-drop=ALL --hostname=host-id nothadoop/docker-image bash test_script.sh arg1 arg2"));
// Test privileged container
@ -1327,10 +1385,10 @@ namespace ContainerExecutor {
"[docker-command-execution]\n"
" docker-command=run\n name=container_e1_12312_11111_02_000001\n image=hadoop/docker-image\n user=root\n hostname=host-id\n"
" mounts=/var/log:/var/log:ro,/var/lib:/lib:ro,/usr/bin/cut:/usr/bin/cut:ro,/tmp:/tmp:rw\n"
" network=bridge\n devices=/dev/test:/dev/test\n net=bridge\n privileged=true\n"
" network=bridge\n devices=/dev/test:/dev/test\n privileged=true\n"
" cap-add=CHOWN,SETUID\n cgroup-parent=ctr-cgroup\n detach=true\n rm=true\n"
" launch-command=bash,test_script.sh,arg1,arg2",
"run --name=container_e1_12312_11111_02_000001 -d --rm --net=bridge -v /var/log:/var/log:ro -v /var/lib:/lib:ro"
"run --name=container_e1_12312_11111_02_000001 -d --rm -v /var/log:/var/log:ro -v /var/lib:/lib:ro"
" -v /usr/bin/cut:/usr/bin/cut:ro -v /tmp:/tmp:rw --cgroup-parent=ctr-cgroup --privileged --cap-drop=ALL "
"--cap-add=CHOWN --cap-add=SETUID --hostname=host-id --device=/dev/test:/dev/test hadoop/docker-image "
"bash test_script.sh arg1 arg2"));
@ -1339,10 +1397,10 @@ namespace ContainerExecutor {
"[docker-command-execution]\n"
" docker-command=run\n name=container_e1_12312_11111_02_000001\n image=hadoop/docker-image\n user=root\n hostname=host-id\n"
" mounts=/var/log:/var/log:ro,/var/lib:/lib:ro,/usr/bin/cut:/usr/bin/cut:ro,/tmp:/tmp:rw\n"
" network=bridge\n devices=/dev/test:/dev/test\n net=bridge\n privileged=true\n"
" network=bridge\n devices=/dev/test:/dev/test\n privileged=true\n"
" cap-add=CHOWN,SETUID\n cgroup-parent=ctr-cgroup\n detach=true\n rm=true\n group-add=1000,1001\n"
" launch-command=bash,test_script.sh,arg1,arg2",
"run --name=container_e1_12312_11111_02_000001 -d --rm --net=bridge -v /var/log:/var/log:ro -v /var/lib:/lib:ro"
"run --name=container_e1_12312_11111_02_000001 -d --rm -v /var/log:/var/log:ro -v /var/lib:/lib:ro"
" -v /usr/bin/cut:/usr/bin/cut:ro -v /tmp:/tmp:rw --cgroup-parent=ctr-cgroup --privileged --cap-drop=ALL "
"--cap-add=CHOWN --cap-add=SETUID --hostname=host-id "
"--device=/dev/test:/dev/test hadoop/docker-image bash test_script.sh arg1 arg2"));
@ -1350,10 +1408,9 @@ namespace ContainerExecutor {
file_cmd_vec.push_back(std::make_pair<std::string, std::string>(
"[docker-command-execution]\n"
" docker-command=run\n name=container_e1_12312_11111_02_000001\n image=docker-image\n user=nobody\n hostname=host-id\n"
" network=bridge\n net=bridge\n"
" detach=true\n rm=true\n group-add=1000,1001\n"
" network=bridge\n detach=true\n rm=true\n group-add=1000,1001\n"
" launch-command=bash,test_script.sh,arg1,arg2",
"run --name=container_e1_12312_11111_02_000001 --user=nobody -d --rm --net=bridge --cap-drop=ALL "
"run --name=container_e1_12312_11111_02_000001 --user=nobody -d --rm --cap-drop=ALL "
"--hostname=host-id --group-add 1000 --group-add 1001 "
"docker-image bash test_script.sh arg1 arg2"));
@ -1372,7 +1429,7 @@ namespace ContainerExecutor {
"[docker-command-execution]\n"
" docker-command=run\n name=container_e1_12312_11111_02_000001\n image=nothadoop/docker-image\n user=nobody\n hostname=host-id\n"
" mounts=/var/log:/var/log:ro,/var/lib:/lib:ro,/usr/bin/cut:/usr/bin/cut:ro,/tmp:/tmp:rw\n"
" network=bridge\n net=bridge\n privileged=true\n"
" network=bridge\n privileged=true\n"
" cap-add=CHOWN,SETUID\n cgroup-parent=ctr-cgroup\n detach=true\n rm=true\n group-add=1000,1001\n"
" launch-command=bash,test_script.sh,arg1,arg2",
PRIVILEGED_CONTAINERS_DISABLED));
@ -1533,10 +1590,10 @@ namespace ContainerExecutor {
"[docker-command-execution]\n"
" docker-command=run\n name=container_e1_12312_11111_02_000001\n image=hadoop/docker-image\n user=nobody\n hostname=host-id\n"
" mounts=/var/log:/var/log:ro,/var/lib:/lib:ro,/usr/bin/cut:/usr/bin/cut:ro,/tmp:/tmp:rw\n"
" network=bridge\n devices=/dev/test:/dev/test\n net=bridge\n"
" network=bridge\n devices=/dev/test:/dev/test\n"
" cap-add=CHOWN,SETUID\n cgroup-parent=ctr-cgroup\n detach=true\n rm=true\n"
" launch-command=bash,test_script.sh,arg1,arg2",
"run --name=container_e1_12312_11111_02_000001 --user=nobody -d --rm --net=bridge -v /var/log:/var/log:ro -v /var/lib:/lib:ro"
"run --name=container_e1_12312_11111_02_000001 --user=nobody -d --rm -v /var/log:/var/log:ro -v /var/lib:/lib:ro"
" -v /usr/bin/cut:/usr/bin/cut:ro -v /tmp:/tmp:rw --cgroup-parent=ctr-cgroup --cap-drop=ALL --cap-add=CHOWN "
"--cap-add=SETUID --hostname=host-id --device=/dev/test:/dev/test hadoop/docker-image bash"
" test_script.sh arg1 arg2"));
@ -1544,10 +1601,9 @@ namespace ContainerExecutor {
"[docker-command-execution]\n"
" docker-command=run\n name=container_e1_12312_11111_02_000001\n image=nothadoop/docker-image\n user=nobody\n hostname=host-id\n"
" mounts=/var/log:/var/log:ro,/var/lib:/lib:ro,/usr/bin/cut:/usr/bin/cut:ro,/tmp:/tmp:rw\n"
" network=bridge\n net=bridge\n"
" cap-add=CHOWN,SETUID\n cgroup-parent=ctr-cgroup\n detach=true\n rm=true\n"
" network=bridge\n cap-add=CHOWN,SETUID\n cgroup-parent=ctr-cgroup\n detach=true\n rm=true\n"
" launch-command=bash,test_script.sh,arg1,arg2",
"run --name=container_e1_12312_11111_02_000001 --user=nobody -d --rm --net=bridge"
"run --name=container_e1_12312_11111_02_000001 --user=nobody -d --rm"
" --cgroup-parent=ctr-cgroup --cap-drop=ALL --hostname=host-id nothadoop/docker-image bash test_script.sh arg1 arg2"));
std::vector<std::pair<std::string, int> > bad_file_cmd_vec;
@ -1555,7 +1611,7 @@ namespace ContainerExecutor {
"[docker-command-execution]\n"
" docker-command=run\n name=container_e1_12312_11111_02_000001\n image=hadoop/docker-image\n user=nobody\n hostname=host-id\n"
" mounts=/var/log:/var/log:ro,/var/lib:/lib:ro,/usr/bin/cut:/usr/bin/cut:ro,/tmp:/tmp:rw\n"
" network=bridge\n devices=/dev/test:/dev/test\n net=bridge\n privileged=true\n"
" network=bridge\n devices=/dev/test:/dev/test\n privileged=true\n"
" cap-add=CHOWN,SETUID\n cgroup-parent=ctr-cgroup\n detach=true\n rm=true\n"
" launch-command=bash,test_script.sh,arg1,arg2",
static_cast<int>(PRIVILEGED_CONTAINERS_DISABLED)));

9
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/runtime/docker/TestDockerRunCommand.java
View File

@ -59,6 +59,10 @@ public void testCommandArguments() {
dockerRunCommand.setOverrideCommandWithArgs(commands);
dockerRunCommand.removeContainerOnExit();
dockerRunCommand.addTmpfsMount("/run");
String portsMapping = "127.0.0.1:8080:80,1234:1234,:2222";
for (String mapping:portsMapping.split(",")) {
dockerRunCommand.addPortsMapping(mapping);
}
assertEquals("run", StringUtils.join(",",
dockerRunCommand.getDockerCommandWithArguments()
@ -79,7 +83,10 @@ public void testCommandArguments() {
.get("launch-command")));
assertEquals("/run", StringUtils.join(",",
dockerRunCommand.getDockerCommandWithArguments().get("tmpfs")));
assertEquals(8, dockerRunCommand.getDockerCommandWithArguments().size());
assertEquals("127.0.0.1:8080:80,1234:1234,:2222", StringUtils.join(",",
dockerRunCommand.getDockerCommandWithArguments()
.get("ports-mapping")));
assertEquals(9, dockerRunCommand.getDockerCommandWithArguments().size());
}
@Test

1
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/DockerContainers.md
View File

@ -365,6 +365,7 @@ environment variables in the application's environment:
| `YARN_CONTAINER_RUNTIME_DOCKER_IMAGE` | Names which image will be used to launch the Docker container. Any image name that could be passed to the Docker client's run command may be used. The image name may include a repo prefix. |
| `YARN_CONTAINER_RUNTIME_DOCKER_RUN_OVERRIDE_DISABLE` | Controls whether the Docker container's default command is overridden. When set to true, the Docker container's command will be "bash _path\_to\_launch\_script_". When unset or set to false, the Docker container's default command is used. |
| `YARN_CONTAINER_RUNTIME_DOCKER_CONTAINER_NETWORK` | Sets the network type to be used by the Docker container. It must be a valid value as determined by the yarn.nodemanager.runtime.linux.docker.allowed-container-networks property. |
| `YARN_CONTAINER_RUNTIME_DOCKER_PORTS_MAPPING` | Allows a user to specify ports mapping for the bridge network Docker container. The value of the environment variable should be a comma-separated list of ports mapping. It's the same to "-p" option for the Docker run command. If the value is empty, "-P" will be added. |
| `YARN_CONTAINER_RUNTIME_DOCKER_CONTAINER_PID_NAMESPACE` | Controls which PID namespace will be used by the Docker container. By default, each Docker container has its own PID namespace. To share the namespace of the host, the yarn.nodemanager.runtime.linux.docker.host-pid-namespace.allowed property must be set to true. If the host PID namespace is allowed and this environment variable is set to host, the Docker container will share the host's PID namespace. No other value is allowed. |
| `YARN_CONTAINER_RUNTIME_DOCKER_RUN_PRIVILEGED_CONTAINER` | Controls whether the Docker container is a privileged container. In order to use privileged containers, the yarn.nodemanager.runtime.linux.docker.privileged-containers.allowed property must be set to true, and the application owner must appear in the value of the yarn.nodemanager.runtime.linux.docker.privileged-containers.acl property. If this environment variable is set to true, a privileged Docker container will be used if allowed. No other value is allowed, so the environment variable should be left unset rather than setting it to false. |
| `YARN_CONTAINER_RUNTIME_DOCKER_MOUNTS` | Adds additional volume mounts to the Docker container. The value of the environment variable should be a comma-separated list of mounts. All such mounts must be given as `source:dest[:mode]` and the mode must be "ro" (read-only) or "rw" (read-write) to specify the type of access being requested. If neither is specified, read-write will be assumed. The mode may include a bind propagation option. In that case, the mode should either be of the form `[option]`, `rw+[option]`, or `ro+[option]`. Valid bind propagation options are shared, rshared, slave, rslave, private, and rprivate. The requested mounts will be validated by container-executor based on the values set in container-executor.cfg for `docker.allowed.ro-mounts` and `docker.allowed.rw-mounts`. |