Remove all tribe related code, comments and documentation (elastic/x-…

…pack-elasticsearch#3784)

Relates to elastic#28443

Original commit: elastic/x-pack-elasticsearch@5c4e7fc

docs/en/ml/limitations.asciidoc

@@ -35,13 +35,6 @@ At this time, you cannot use cross cluster search in either the {ml} APIs or the
 For more information about cross cluster search,
 see {ref}/modules-cross-cluster-search.html[Cross Cluster Search].
 
-[float]
-=== {xpackml} features are not supported on tribe nodes
-
-You cannot use {ml} features on tribe nodes. For more information about that
-type of node, see
-{ref}/modules-tribe.html[Tribe node].
-
 [float]
 === Anomaly Explorer omissions and limitations
 //See x-pack-elasticsearch/#844 and x-pack-kibana/#1461

docs/en/monitoring/configuring-monitoring.asciidoc

@@ -12,5 +12,4 @@ can also adjust how monitoring data is displayed. For more information, see
 <<es-monitoring>>.
 
 include::indices.asciidoc[]
-include::tribe.asciidoc[]
 include::{xes-repo-dir}/settings/monitoring-settings.asciidoc[]

docs/en/security/tribe-clients-integrations.asciidoc

@@ -1,12 +1,11 @@
 [[ccs-tribe-clients-integrations]]
-== Cross Cluster Search, Tribe, Clients and Integrations
+== Cross Cluster Search, Clients and Integrations
 
-When using {ref}/modules-cross-cluster-search.html[Cross Cluster Search] or
-{ref}/modules-tribe.html[Tribe Nodes] you need to take extra steps to secure
-communications with the connected clusters.
+When using {ref}/modules-cross-cluster-search.html[Cross Cluster Search]
+you need to take extra steps to secure communications with the connected
+clusters.
 
 * <<cross-cluster-configuring, Cross Cluster Search and Security>>
-* <<tribe-node-configuring, Tribe Nodes and Security>>
 
 You will need to update the configuration for several clients to work with a
 secured cluster:
@@ -34,8 +33,6 @@ or at least communicate with the cluster in a secured way:
 
 include::tribe-clients-integrations/cross-cluster.asciidoc[]
 
-include::tribe-clients-integrations/tribe.asciidoc[]
-
 include::tribe-clients-integrations/java.asciidoc[]
 
 include::tribe-clients-integrations/http.asciidoc[]

plugin/core/src/main/java/org/elasticsearch/license/License.java

@@ -76,7 +76,7 @@ public class License implements ToXContentObject {
      * <p>
      * Note: The mode indicates features that should be made available, but it does not indicate whether the license is active!
      *
-     * The id byte is used for ordering operation modes (used for merging license md in tribe node)
+     * The id byte is used for ordering operation modes
      */
     public enum OperationMode {
         MISSING((byte) 0),

plugin/core/src/main/java/org/elasticsearch/license/Licensing.java

@@ -29,15 +29,12 @@
 import java.util.List;
 import java.util.function.Supplier;
 
-import static org.elasticsearch.xpack.core.XPackClientActionPlugin.isTribeNode;
 import static org.elasticsearch.xpack.core.XPackPlugin.transportClientMode;
 
 public class Licensing implements ActionPlugin {
 
     public static final String NAME = "license";
     protected final Settings settings;
-    private final boolean isTransportClient;
-    private final boolean isTribeNode;
 
     // Until this is moved out to its own plugin (its currently in XPackPlugin.java, we need to make sure that any edits to this file
     // are also carried out in XPackClientPlugin.java
@@ -60,15 +57,10 @@ public List<NamedXContentRegistry.Entry> getNamedXContent() {
 
     public Licensing(Settings settings) {
         this.settings = settings;
-        isTransportClient = transportClientMode(settings);
-        isTribeNode = isTribeNode(settings);
     }
 
     @Override
     public List<ActionHandler<? extends ActionRequest, ? extends ActionResponse>> getActions() {
-        if (isTribeNode) {
-            return Collections.singletonList(new ActionHandler<>(GetLicenseAction.INSTANCE, TransportGetLicenseAction.class));
-        }
         return Arrays.asList(new ActionHandler<>(PutLicenseAction.INSTANCE, TransportPutLicenseAction.class),
                 new ActionHandler<>(GetLicenseAction.INSTANCE, TransportGetLicenseAction.class),
                 new ActionHandler<>(DeleteLicenseAction.INSTANCE, TransportDeleteLicenseAction.class),
@@ -82,12 +74,10 @@ public List<RestHandler> getRestHandlers(Settings settings, RestController restC
             Supplier<DiscoveryNodes> nodesInCluster) {
         List<RestHandler> handlers = new ArrayList<>();
         handlers.add(new RestGetLicenseAction(settings, restController));
-        if (false == isTribeNode) {
-            handlers.add(new RestPutLicenseAction(settings, restController));
-            handlers.add(new RestDeleteLicenseAction(settings, restController));
-            handlers.add(new RestGetTrialStatus(settings, restController));
-            handlers.add(new RestPostStartTrialLicense(settings, restController));
-        }
+        handlers.add(new RestPutLicenseAction(settings, restController));
+        handlers.add(new RestDeleteLicenseAction(settings, restController));
+        handlers.add(new RestGetTrialStatus(settings, restController));
+        handlers.add(new RestPostStartTrialLicense(settings, restController));
         return handlers;
     }
 

plugin/core/src/main/java/org/elasticsearch/xpack/core/XPackSettings.java

@@ -30,10 +30,8 @@ public class XPackSettings {
     /** Setting for enabling or disabling security. Defaults to true. */
     public static final Setting<Boolean> SECURITY_ENABLED = Setting.boolSetting("xpack.security.enabled", true, Setting.Property.NodeScope);
 
-    /** Setting for enabling or disabling monitoring. Defaults to true if not a tribe node. */
-    public static final Setting<Boolean> MONITORING_ENABLED = Setting.boolSetting("xpack.monitoring.enabled",
-            // By default, monitoring is disabled on tribe nodes
-            s -> String.valueOf(XPackClientActionPlugin.isTribeNode(s) == false && XPackClientActionPlugin.isTribeClientNode(s) == false),
+    /** Setting for enabling or disabling monitoring. */
+    public static final Setting<Boolean> MONITORING_ENABLED = Setting.boolSetting("xpack.monitoring.enabled", true,
             Setting.Property.NodeScope);
 
     /** Setting for enabling or disabling watcher. Defaults to true. */

plugin/ml/src/main/java/org/elasticsearch/xpack/ml/MachineLearning.java

@@ -49,7 +49,6 @@
 import org.elasticsearch.threadpool.FixedExecutorBuilder;
 import org.elasticsearch.threadpool.ThreadPool;
 import org.elasticsearch.watcher.ResourceWatcherService;
-import org.elasticsearch.xpack.core.XPackClientActionPlugin;
 import org.elasticsearch.xpack.core.XPackPlugin;
 import org.elasticsearch.xpack.core.XPackSettings;
 import org.elasticsearch.xpack.core.ml.MachineLearningField;
@@ -261,8 +260,6 @@ public class MachineLearning extends Plugin implements ActionPlugin, AnalysisPlu
     private final Environment env;
     private final boolean enabled;
     private final boolean transportClientMode;
-    private final boolean tribeNode;
-    private final boolean tribeNodeClient;
 
     private final SetOnce<AutodetectProcessManager> autodetectProcessManager = new SetOnce<>();
     private final SetOnce<DatafeedManager> datafeedManager = new SetOnce<>();
@@ -272,8 +269,6 @@ public MachineLearning(Settings settings, Path configPath) {
         this.enabled = XPackSettings.MACHINE_LEARNING_ENABLED.get(settings);
         this.transportClientMode = XPackPlugin.transportClientMode(settings);
         this.env = transportClientMode ? null : new Environment(settings, configPath);
-        this.tribeNode = XPackClientActionPlugin.isTribeNode(settings);
-        this.tribeNodeClient = XPackClientActionPlugin.isTribeClientNode(settings);
     }
 
     protected XPackLicenseState getLicenseState() { return XPackPlugin.getSharedLicenseState(); }
@@ -299,7 +294,7 @@ public Settings additionalSettings() {
         String maxOpenJobsPerNodeNodeAttrName = "node.attr." + MAX_OPEN_JOBS_NODE_ATTR;
         String machineMemoryAttrName = "node.attr." + MACHINE_MEMORY_NODE_ATTR;
 
-        if (enabled == false || transportClientMode || tribeNode || tribeNodeClient) {
+        if (enabled == false || transportClientMode) {
             disallowMlNodeAttributes(mlEnabledNodeAttrName, maxOpenJobsPerNodeNodeAttrName, machineMemoryAttrName);
             return Settings.EMPTY;
         }
@@ -384,7 +379,7 @@ public Collection<Object> createComponents(Client client, ClusterService cluster
     // this method can replace the entire contents of the overridden createComponents() method
     private Collection<Object> createComponents(Client client, ClusterService clusterService, ThreadPool threadPool,
                                                 NamedXContentRegistry xContentRegistry, Environment environment) {
-        if (enabled == false || transportClientMode || tribeNode || tribeNodeClient) {
+        if (enabled == false || transportClientMode) {
             return emptyList();
         }
 
@@ -449,7 +444,7 @@ private Collection<Object> createComponents(Client client, ClusterService cluste
     }
 
     public List<PersistentTasksExecutor<?>> createPersistentTasksExecutors(ClusterService clusterService) {
-        if (enabled == false || transportClientMode || tribeNode || tribeNodeClient) {
+        if (enabled == false || transportClientMode) {
             return emptyList();
         }
 
@@ -462,7 +457,7 @@ public List<PersistentTasksExecutor<?>> createPersistentTasksExecutors(ClusterSe
     public Collection<Module> createGuiceModules() {
         List<Module> modules = new ArrayList<>();
 
-        if (tribeNodeClient || transportClientMode) {
+        if (transportClientMode) {
             return modules;
         }
 
@@ -478,7 +473,7 @@ public List<RestHandler> getRestHandlers(Settings settings, RestController restC
                                              IndexScopedSettings indexScopedSettings, SettingsFilter settingsFilter,
                                              IndexNameExpressionResolver indexNameExpressionResolver,
                                              Supplier<DiscoveryNodes> nodesInCluster) {
-        if (false == enabled || tribeNodeClient || tribeNode) {
+        if (false == enabled) {
             return emptyList();
         }
         return Arrays.asList(
@@ -528,7 +523,7 @@ public List<RestHandler> getRestHandlers(Settings settings, RestController restC
 
     @Override
     public List<ActionHandler<? extends ActionRequest, ? extends ActionResponse>> getActions() {
-        if (false == enabled || tribeNodeClient || tribeNode) {
+        if (false == enabled) {
             return emptyList();
         }
         return Arrays.asList(
@@ -587,7 +582,7 @@ public List<RestHandler> getRestHandlers(Settings settings, RestController restC
     }
     @Override
     public List<ExecutorBuilder<?>> getExecutorBuilders(Settings settings) {
-        if (false == enabled || tribeNode || tribeNodeClient || transportClientMode) {
+        if (false == enabled || transportClientMode) {
             return emptyList();
         }
         int maxNumberOfJobs = AutodetectProcessManager.MAX_OPEN_JOBS_PER_NODE.get(settings);

plugin/ml/src/main/java/org/elasticsearch/xpack/ml/MachineLearningFeatureSet.java

@@ -19,7 +19,6 @@
 import org.elasticsearch.env.Environment;
 import org.elasticsearch.license.XPackLicenseState;
 import org.elasticsearch.plugins.Platforms;
-import org.elasticsearch.xpack.core.XPackClientActionPlugin;
 import org.elasticsearch.xpack.core.XPackFeatureSet;
 import org.elasticsearch.xpack.core.XPackPlugin;
 import org.elasticsearch.xpack.core.XPackSettings;
@@ -72,9 +71,8 @@ public MachineLearningFeatureSet(Environment environment, ClusterService cluster
         Map<String, Object> nativeCodeInfo = NativeController.UNKNOWN_NATIVE_CODE_INFO;
         // Don't try to get the native code version if ML is disabled - it causes too much controversy
         // if ML has been disabled because of some OS incompatibility.  Also don't try to get the native
-        // code version in the transport or tribe client - the controller process won't be running.
-        if (enabled && XPackPlugin.transportClientMode(environment.settings()) == false
-                && XPackClientActionPlugin.isTribeClientNode(environment.settings()) == false) {
+        // code version in the transport client - the controller process won't be running.
+        if (enabled && XPackPlugin.transportClientMode(environment.settings()) == false) {
             try {
                 if (isRunningOnMlPlatform(true)) {
                     NativeController nativeController = NativeControllerHolder.getNativeController(environment);