使用Easticsearc時侯啟動時，點擊elasticsearch.bat發生閃退。
原因：允許elasticsearch跨越訪問時，在修改了elasticsearch的配置文件，並且以非UTF-8的格式修改的，結果就報錯了。
添加跨域訪問：http.cors.enabled: true http.cors.allow‐origin: "*"日志：
java.lang.IllegalArgumentException: unknown setting [http.cors.allow�\origin] did you mean [http.cors.allow-origin]?
問題：查看日志文件可以看出allowe-origin中的符號沒有識別。
解決：原因是在修改elasticsearch.yml時用的notepad++，默認的是ANSI 編碼，重新修改配置文件，以UTF-8編碼修改並保存。（注意：修改elasticsearch.yml最好只用utf-8編碼）
elasticsearch：6.2.1
jdk:1.8.0.241 [ java -version]
我的elasticsearch.yml 配置 ，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 consult the documentation for further information on configuration options:
# https://www.elastic.co/guide/en/elasticsearch/reference/index.html
#
# ---------------------------------- Cluster -----------------------------------
#
# Use a descriptive name for your cluster:
##配置elasticsearch的集群名稱，默認是elasticsearch。建議修改成一個有意義的名稱。
cluster.name: lxw-application
#
# ------------------------------------ Node ------------------------------------
#
# Use a descriptive name for the node:
##節點名，通常一台物理服務器就是一個節點，es會默認隨機指定一個名字，建議指定一個有意義的名稱，方便管理
node.name: lxw-node-1
#
# Add custom attributes to the node:
#
#node.attr.rack: r1
node.master: true #主節點
node.data: true #數據節點
#
# ----------------------------------- Paths ------------------------------------
#
# Path to directory where to store the data (separate multiple locations by comma):
#索引目錄
path.data: D:\softwore\elasticsearch-6.2.1\data
# Path to log files:
#日志
path.logs: D:\softwore\elasticsearch-6.2.1\logs
#
# ----------------------------------- Memory -----------------------------------
#
# Lock the memory on startup:
#
#bootstrap.memory_lock: true
#
# Make sure that the heap size 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 -----------------------------------
#
# By default Elasticsearch is only accessible on localhost. Set a different
# address here to expose this node on the network:
##綁定ip地址 我的問題是改的這里
#network.host: 0.0.0.0
network.host: 127.0.0.1
#
# By default Elasticsearch listens for HTTP traffic on the first free port it
# finds starting at 9200. Set a specific HTTP port here:
#暴露的http端口
http.port: 9200
#內部端口
transport.tcp.port: 9300
# 跨域設置
http.cors.enabled: true
http.cors.allow-origin: "*"
#
# For more information, consult the network module documentation.
#
# --------------------------------- Discovery ----------------------------------
#
# Pass an initial list of hosts to perform discovery when this node is started:
# The default list of hosts is ["127.0.0.1", "[::1]"]
#
#discovery.seed_hosts: ["host1", "host2"]
#
# Bootstrap the cluster using an initial set of master-eligible nodes:
#
#cluster.initial_master_nodes: ["node-1", "node-2"]
#
# For more information, consult the discovery and cluster formation module documentation.
#
#設置集群中master節點的初始列表
discovery.zen.ping.unicast.hosts: ["0.0.0.0:9300", "0.0.0.0:9301", "0.0.0.0:9302"]
#主結點數量的最少值 ,此值的公式為：(master_eligible_nodes / 2) + 1 ，比如：有3個符合要求的主結點，那么這里要設置為2。
discovery.zen.minimum_master_nodes: 1
# ---------------------------------- Various -----------------------------------
#
# Require explicit names when deleting indices:
#
#action.destructive_requires_name: true
報錯如下：
D:\softwore\elasticsearch-6.2.1\bin>elasticsearch.bat
[2021-08-16T14:56:26,659][INFO ][o.e.n.Node ] [lxw-node-1] initializing ...
[2021-08-16T14:56:26,753][INFO ][o.e.e.NodeEnvironment ] [lxw-node-1] using [1] data paths, mounts [[(D:)]], net usable_space [380.2gb], net total_space [390.6gb], types [NTFS]
[2021-08-16T14:56:26,754][INFO ][o.e.e.NodeEnvironment ] [lxw-node-1] heap size [990.7mb], compressed ordinary object pointers [true]
[2021-08-16T14:56:26,756][INFO ][o.e.n.Node ] [lxw-node-1] node name [lxw-node-1], node ID [JdIIBJ5NRYSD52RuvkxTiQ]
[2021-08-16T14:56:26,756][INFO ][o.e.n.Node ] [lxw-node-1] version[6.2.1], pid[13648], build[7299dc3/2018-02-07T19:34:26.990113Z], OS[Windows 10/10.0/amd64], JVM[Oracle Corporation/Java HotSpot(TM) 64-Bit Server VM/1.8.0_241/25.241-b07]
[2021-08-16T14:56:26,757][INFO ][o.e.n.Node ] [lxw-node-1] JVM arguments [-Xms1g, -Xmx1g, -XX:+UseConcMarkSweepGC, -XX:CMSInitiatingOccupancyFraction=75, -XX:+UseCMSInitiatingOccupancyOnly, -XX:+AlwaysPreTouch, -Xss1m, -Djava.awt.headless=true, -Dfile.encoding=UTF-8, -Djna.nosys=true, -XX:-OmitStackTraceInFastThrow, -Dio.netty.noUnsafe=true, -Dio.netty.noKeySetOptimization=true, -Dio.netty.recycler.maxCapacityPerThread=0, -Dlog4j.shutdownHookEnabled=false, -Dlog4j2.disable.jmx=true, -Djava.io.tmpdir=C:\Users\LEJU\AppData\Local\Temp\elasticsearch, -XX:+HeapDumpOnOutOfMemoryError, -XX:+PrintGCDetails, -XX:+PrintGCDateStamps, -XX:+PrintTenuringDistribution, -XX:+PrintGCApplicationStoppedTime, -Xloggc:logs/gc.log, -XX:+UseGCLogFileRotation, -XX:NumberOfGCLogFiles=32, -XX:GCLogFileSize=64m, -Delasticsearch, -Des.path.home=D:\softwore\elasticsearch-6.2.1, -Des.path.conf=D:\softwore\elasticsearch-6.2.1\config]
[2021-08-16T14:56:27,485][INFO ][o.e.p.PluginsService ] [lxw-node-1] loaded module [aggs-matrix-stats]
[2021-08-16T14:56:27,485][INFO ][o.e.p.PluginsService ] [lxw-node-1] loaded module [analysis-common]
[2021-08-16T14:56:27,493][INFO ][o.e.p.PluginsService ] [lxw-node-1] loaded module [ingest-common]
[2021-08-16T14:56:27,494][INFO ][o.e.p.PluginsService ] [lxw-node-1] loaded module [lang-expression]
[2021-08-16T14:56:27,494][INFO ][o.e.p.PluginsService ] [lxw-node-1] loaded module [lang-mustache]
[2021-08-16T14:56:27,496][INFO ][o.e.p.PluginsService ] [lxw-node-1] loaded module [lang-painless]
[2021-08-16T14:56:27,497][INFO ][o.e.p.PluginsService ] [lxw-node-1] loaded module [mapper-extras]
[2021-08-16T14:56:27,497][INFO ][o.e.p.PluginsService ] [lxw-node-1] loaded module [parent-join]
[2021-08-16T14:56:27,498][INFO ][o.e.p.PluginsService ] [lxw-node-1] loaded module [percolator]
[2021-08-16T14:56:27,498][INFO ][o.e.p.PluginsService ] [lxw-node-1] loaded module [rank-eval]
[2021-08-16T14:56:27,499][INFO ][o.e.p.PluginsService ] [lxw-node-1] loaded module [reindex]
[2021-08-16T14:56:27,499][INFO ][o.e.p.PluginsService ] [lxw-node-1] loaded module [repository-url]
[2021-08-16T14:56:27,500][INFO ][o.e.p.PluginsService ] [lxw-node-1] loaded module [transport-netty4]
[2021-08-16T14:56:27,500][INFO ][o.e.p.PluginsService ] [lxw-node-1] loaded module [tribe]
[2021-08-16T14:56:27,501][INFO ][o.e.p.PluginsService ] [lxw-node-1] no plugins loaded
[2021-08-16T14:56:28,679][WARN ][o.e.b.ElasticsearchUncaughtExceptionHandler] [lxw-node-1] uncaught exception in thread [main]
org.elasticsearch.bootstrap.StartupException: java.lang.IllegalArgumentException: unknown setting [http.cors.allow鈥恛rigin] did you mean [http.cors.allow-origin]?
at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:125) ~[elasticsearch-6.2.1.jar:6.2.1]
at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:112) ~[elasticsearch-6.2.1.jar:6.2.1]
at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) ~[elasticsearch-6.2.1.jar:6.2.1]
at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:124) ~[elasticsearch-cli-6.2.1.jar:6.2.1]
at org.elasticsearch.cli.Command.main(Command.java:90) ~[elasticsearch-cli-6.2.1.jar:6.2.1]
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:92) ~[elasticsearch-6.2.1.jar:6.2.1]
at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:85) ~[elasticsearch-6.2.1.jar:6.2.1]
Caused by: java.lang.IllegalArgumentException: unknown setting [http.cors.allow鈥恛rigin] did you mean [http.cors.allow-origin]?
at org.elasticsearch.common.settings.AbstractScopedSettings.validate(AbstractScopedSettings.java:346) ~[elasticsearch-6.2.1.jar:6.2.1]
at org.elasticsearch.common.settings.AbstractScopedSettings.validate(AbstractScopedSettings.java:310) ~[elasticsearch-6.2.1.jar:6.2.1]
at org.elasticsearch.common.settings.AbstractScopedSettings.validate(AbstractScopedSettings.java:284) ~[elasticsearch-6.2.1.jar:6.2.1]
at org.elasticsearch.common.settings.SettingsModule.<init>(SettingsModule.java:134) ~[elasticsearch-6.2.1.jar:6.2.1]
at org.elasticsearch.node.Node.<init>(Node.java:331) ~[elasticsearch-6.2.1.jar:6.2.1]
at org.elasticsearch.node.Node.<init>(Node.java:246) ~[elasticsearch-6.2.1.jar:6.2.1]
at org.elasticsearch.bootstrap.Bootstrap$5.<init>(Bootstrap.java:213) ~[elasticsearch-6.2.1.jar:6.2.1]
at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:213) ~[elasticsearch-6.2.1.jar:6.2.1]
at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:323) ~[elasticsearch-6.2.1.jar:6.2.1]
at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:121) ~[elasticsearch-6.2.1.jar:6.2.1]解決方法：
將原來的：注意版本問題，不同版本兼容性不一樣
補充：解決Elasticsearch（Windows）閃退問題
進入Elasticsearch安裝目錄下的config目錄，修改elasticsearch.yml文件.在文件的末尾加入以下代碼
http.cors.enabled: true
http.cors.allow-origin: "*"
cluster.name: pengliang
node.name: master
node.master: true
network.host: 127.0.0.1
發現持續閃退。這時候我一開始只加入前兩行的時候，發現可以正常運行。於是推理了一下，其實可以看日志，但是可能我比較懶，直接感覺加的ip綁定有問題，於是刪除最后一行，重新保存啟動，發現可以正常運行，好像是因為Elasticsearch是誇域的，具體可能是什么問題，沒有細查