1.node概述 Any time that you start an instance of Elasticsearch, you are starting a node. A collection of connected nodes is called a cluster. If you are running a single node of Elasticsearch, then you have a cluster of one node. Every node in the clu…

1.找到bin目录,下面有elasticSearch的sh文件,查看执行过程 exec \ "$JAVA" \ $ES_JAVA_OPTS \ -Des.path.home="$ES_HOME" \ -Des.path.conf="$ES_PATH_CONF" \ -Des.distribution.flavor="$ES_DISTRIBUTION_FLAVOR" \ -Des.distribution.type="…

1.DiscoveryModule概述 /** * A module for loading classes for node discovery. */ 2.discovery The discovery module is responsible for discovering nodes within a cluster, as well as electing a master node. Note, Elasticsearch is a peer to peer based syste…

1.SettingsModule概述 /** * A module that binds the provided settings to the {@link Settings} interface. */ 2.Setting 2.1 IndexScopedSettings /** * Encapsulates all valid index level settings. * @see Property#IndexScope */ 内置的设置 public static final Set<…

1.RepositoriesModule概述 Sets up classes for Snapshot/Restore 1.1 snapshot概述 A snapshot is a backup taken from a running Elasticsearch cluster. You can take a snapshot of individual indices or of the entire cluster and store it in a repository on a sha…

1.http模块概述 The http module allows to expose Elasticsearch APIs over HTTP. The http mechanism is completely asynchronous in nature, meaning that there is no blocking thread waiting for a response. The benefit of using asynchronous communication for HT…

1.gateway概述 The local gateway module stores the cluster state and shard data across full cluster restarts. 2.gatewaymodule模块 @Override protected void configure() { bind(DanglingIndicesState.class).asEagerSingleton(); bind(GatewayService.class).asEage…

1.indices概述 The indices module controls index-related settings that are globally managed for all indices, rather than being configurable at a per-index level. 2.IndicesModule模块作用 Configures classes and services that are shared by indices on each node…

1. cluser概述 One of the main roles of the master is to decide which shards to allocate to which nodes, and when to move shards between nodes in order to rebalance the cluster. 2. ClusterModule模块的作用 Configures classes and services that affect the entir…

elasticsearch里面的组件基本都是用Guice的Injector进行注入与获取实例方式进行模块化管理. 在node的构造方法中 /** * Constructs a node * * @param environment the environment for this node * @param classpathPlugins the plugins to be loaded from the classpath * @param forbidPrivateIndexSetting…