SpringBoot + Elasticsearch之踩坑记录

spring boot 1.x支持elasticsearch <5.x

elasticsearch安装：按官网安装步骤：

（1）curl -L -O https://download.elastic.co/elasticsearch/release/org/elasticsearch/distribution/tar/elasticsearch/2.3.4/elasticsearch-2.3.4.tar.gz

（2）tar -xvf elasticsearch-2.3.4.tar.gz

（3）cd elasticsearch-2.3.4/bin

（4）./elasticsearch

elasticsearch配置：

打开ES的config文件夹下的elasticsearch.yml；

配置文件如下：

# ======================== Elasticsearch Configuration =========================
#
# NOTE: Elasticsearch comes with reasonable defaults for most settings.
#       Before you set out to tweak and tune the configuration, make sure you
#       understand what are you trying to accomplish and the consequences.
#
# The primary way of configuring a node is via this file. This template lists
# the most important settings you may want to configure for a production cluster.
#
# Please see the documentation for further information on configuration options:
# <http://www.elastic.co/guide/en/elasticsearch/reference/current/setup-configuration.html>
#
# ---------------------------------- Cluster -----------------------------------
#
# Use a descriptive name for your cluster:
#
 cluster.name: my-name
#
# ------------------------------------ Node ------------------------------------
#
# Use a descriptive name for the node:
#
 node.name: name
#
# Add custom attributes to the node:
#
# node.rack: r1
#
# ----------------------------------- Paths ------------------------------------
#
# Path to directory where to store the data (separate multiple locations by comma):
#
 path.data: /opt/modules/elasticsearch-2.3.4/data
#
# Path to log files:
#
 path.logs: /opt/modules/elasticsearch-2.3.4/logs
#
# ----------------------------------- Memory -----------------------------------
#
# Lock the memory on startup:
#
#bootstrap.memory_lock: false
#bootstrap.system_call_filter: false
#
# Make sure that the `ES_HEAP_SIZE` environment variable is set to about half the memory
# available on the system and that the owner of the process is allowed to use this limit.
#
# Elasticsearch performs poorly when the system is swapping the memory.
#
# ---------------------------------- Network -----------------------------------
#
# Set the bind address to a specific IP (IPv4 or IPv6):
#
 network.host: 0.0.0.0
#
# Set a custom port for HTTP:
#
 http.port: 9200
 transport.tcp.port: 9300
 transport.tcp.compress: true
#
# For more information, see the documentation at:
# <http://www.elastic.co/guide/en/elasticsearch/reference/current/modules-network.html>
#
# --------------------------------- Discovery ----------------------------------
#
# Pass an initial list of hosts to perform discovery when new node is started:
# The default list of hosts is ["127.0.0.1", "[::1]"]
#
# discovery.zen.ping.unicast.hosts: ["host1", "host2"]
 discovery.zen.ping.unicast.hosts: ["xx.xxx.xxx.xxx"]
#
# Prevent the "split brain" by configuring the majority of nodes (total number of nodes / 2 + 1):
#
# discovery.zen.minimum_master_nodes: 3
#
# For more information, see the documentation at:
# <http://www.elastic.co/guide/en/elasticsearch/reference/current/modules-discovery.html>
#
# ---------------------------------- Gateway -----------------------------------
#
# Block initial recovery after a full cluster restart until N nodes are started:
#
# gateway.recover_after_nodes: 3
#
# For more information, see the documentation at:
# <http://www.elastic.co/guide/en/elasticsearch/reference/current/modules-gateway.html>
#
# ---------------------------------- Various -----------------------------------
#
# Disable starting multiple nodes on a single system:
#
# node.max_local_storage_nodes: 1
#
# Require explicit names when deleting indices:
#
# action.destructive_requires_name: true
 http.cors.enabled: true
 http.cors.allow-origin: "*"
# elasticsearch plugin ik 
 index.analysis.analyzer.ik.type: "ik"

elasticsearch - ik分词器安装：

首先上git根据自己的ES版本号下载对应版本的ik。例如ES2.3.4的 https://github.com/medcl/elasticsearch-analysis-ik/releases/tag/v1.9.4（这里推荐下载第一个zip，可以省去mvn，当初第一次mvn真的花了很久时间）。

（1）将下载的zip解压缩，获得config文件夹、ik的一个jar文件、一些其他的文件。

config文件夹改名为analysis-ik，放入ES的config中

剩余文件放入ES的plugins目录下的analysis-ik文件夹中（文件夹没有，需要自己创建）。

 

重要！！！！！！！linux一些环境配置可参见：https://blog.youkuaiyun.com/daerzei/article/details/79761086

spring boot 2.x支持elasticsearch >5.x

es安装可参考此博客：https://blog.youkuaiyun.com/daerzei/article/details/79761086

分词器可参考：https://blog.youkuaiyun.com/u014315200/article/details/78630001

配置文件与上面的大相同，将配置文件最下面的分词器删除掉就行了，删除如下语句

index.analysis.analyzer.ik.type: "ik"

 

head的安装：

先安装nodejs，然后再安装head

nodejs安装：https://blog.youkuaiyun.com/xiatiancc/article/details/78872157

1、下载head插件源码

https://github.com/mobz/elasticsearch-head

由于elasticsearch5.0版本变化较大，目前elasticsearch5.0 暂时不支持直接安装，但是head作者提供了另一种安装方法。

可参见官网地址： https://github.com/mobz/elasticsearch-head