1.下载

下载地址: elasticsearch7.11.1

2.安装

解压到/software/elasticsearch

创建 data和log文件

mkdir var/elasticsearch/data

mkdir var/elasticsearch/log

转到 cd /software/elasticsearch/config

修改elasticsearch config下的 jvm.options内存

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在修改config下的elasticsearch.yml文件

# ======================== 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:

# 集群名称 可以通过不同的集群名称区分不同的集群#cluster.name: my-application

#

# ------------------------------------ Node ------------------------------------#

# Use a descriptive name for the node:

# 节点名称node.name: node-1

#

# Add custom attributes to the node:##node.attr.rack: r1

#

# ----------------------------------- Paths ------------------------------------

#

# Path to directory where to store the data (separate multiple locations by comma):

# 数据地址

path.data: /var/elasticsearch/data

#

# Path to log files:# 日志地址

path.logs: /var/elasticsearch/log

#

# ----------------------------------- 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 -----------------------------------#

# Set the bind address to a specific IP (IPv4 or IPv6):

# 访问限制，一旦自定义了该参数值，ES就假设你正从开发模式过渡到生产模式，会将系统启动检查警告升级为异常。

#在投入生产环境之前，发现和形成集群需要配置两个重要的参数：discovery.seed_hosts及cluster.initial_master_nodes，以便集群中的节点能发现彼此并选出一个主节点。

network.host: 0.0.0.0

#

# Set a custom port for HTTP:

# 访问端口

http.port: 9200 

#

# 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: ["127.0.0.1", "[::1]"]

# 主机发现，这里配置其他的节点主机名称或者IP

# 这个项目中不需要配置自己这台主机的IP，只需要提供其他节点的IP或主机名

# Bootstrap the cluster using an initial set of master-eligible nodes:

# 可选选举为主节点的节点主机名

# 这里需要填入所有主机名称，这里填入了所有的节点

# 表示集群中任何一个节点都可以选举称为主节点

#cluster.initial_master_nodes: ["node-1"]

#

# For more information, consult the discovery and cluster formation module documentation.

#

# ---------------------------------- Gateway -----------------------------------#

# Block initial recovery after a full cluster restart until N nodes are started:

#

#gateway.recover_after_nodes: 3

#

# For more information, consult the gateway module documentation.

#

# ---------------------------------- Various -----------------------------------#

# Require explicit names when deleting indices:

#

#action.destructive_requires_name: true

#跨域

http.cors.enabled: true

http.cors.allow-origin: "*"

3.启动

在 elasticsearch/bin目录下启动

正常启动 ./elasticsearch

后台运行 ./elasticsearch -d

3.1 不能使用root用户启动

添加组：groupadd elasticsearch

添加用户： useradd eluser -g elasticsearch -p eluser

root用户下赋权 ：chown eluser:elasticsearch /software/elasticsearch -R

切换用户启动 :su eluser

3.2 启动异常

1.max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144]

vim /etc/sysctl.conf

添加

vm.max_map_count = 655360

fs.file-max = 655360

保存然后运行

sysctl -p

4.设置开启启动

1、在/etc/init.d/目录创建es文件

vim /etc/init.d/es

2.添加脚本

#!/bin/sh

#chkconfig: 2345 80 05

#description: elasticsearch

#processname: elasticsearch-7.1.1

export JAVA_HOME=/software/jdk1.8

export PATH=$JAVA_HOME/bin:$PATH

export ES_HOME=/software/elasticsearch/bin

export PATH=$ES_HOME/bin:$PATH

case $1 in

    start)

        su eluser<<!

        cd $ES_HOME

        cd bin

        ./elasticsearch -d -p pid

        exit

!

        echo "elasticsearch is started"

        ;;

    stop)

        pid=`ps -ef | grep "Elasticsearch" |grep -v "grep" | awk '{print $2}'`

        kill -9 $pid

        echo "elasticsearch is stopped"

        ;;

    restart)

        pid=`ps -ef | grep "Elasticsearch" |grep -v "grep" | awk '{print $2}'`

        kill -9 $pid

        echo "elasticsearch is stopped"

        sleep 1

        su eluser<<!

        cd $ES_HOME

        cd bin

        ./elasticsearch -d -p pid

        exit

!

        echo "elasticsearch is started"

        ;;

    *)

        echo "start|stop|restart"

        ;;

esac

exit 0

3.赋权

chmod 755 /etc/init.d/es

4.添加启动服务

chkconfig --add es

5.操作服务

启动 service es start

停止 service es stop

重启 service es restart

5.集群部署elasticsearch

1.复制三份

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2.设置jvm.options配置，elasticsearch.yml中的data、log地址。

elasticsearch-00: elasticsearch.yml

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elasticsearch-01: elasticsearch.yml

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elasticsearch-02: elasticsearch.yml

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增加多个/etc/init.d/下多个配置

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逐个启动。

3.使用elasticsearch-head 验证

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