Elasticsearch7.10.0集群搭建

Posted 2021-05-25 zhenghuasheng

1,环境准备

• 物理机：CentOS 7.7 64位，4核，8G
• JDK：jdk-8u171-linux-x64.tar.gz
• Elasticsearch: elasticsearch-7.10.0-linux-x86_64.tar.gz (下载地址：https://www.elastic.co/cn/downloads/elasticsearch)

2，环境配置

• jdk安装：

tar -zxvf jdk-8u171-linux-x64.tar.gz
vim  /etc/profile

profile最后加入配置

export JAVA_HOME=/usr/local/src/jdk1.8.0_171
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin

执行生效命令

source profile

• 系统变量修改

vim etc/sysctl.conf
#加入配置 vm.max_map_count=655360
sysctl -p
#es无法使用root用户运行，需新增用户
useradd qtyj
#设置密码
passwd qtyj

3，es安装

#解压安装包
tar -zxvf elasticsearch-7.10.0-linux-x86_64.tar.gz

启用安全模块
在elasticsearch.yml中加入配置

xpack.security.enabled: true

生成证书

1，bin/elasticsearch-certutil ca
2，bin/elasticsearch-certutil cert --ca elastic-stack-ca.p12
# elastic-stack-ca.p12为1生成文件，2生成的证书文件是无状态的，一台机器生产后 其他机器拷贝就可以使用。
#设置密码后需要更新密码到keystory
3，bin/elasticsearch-keystore add xpack.security.transport.ssl.keystore.secure_password
4，bin/elasticsearch-keystore add xpack.security.transport.ssl.truststore.secure_password

#查阅文档： https://www.elastic.co/guide/en/elasticsearch/reference/7.x/security-basic-setup.html

xpack.security.transport.ssl.enabled: true
xpack.security.transport.ssl.verification_mode: certificate
xpack.security.transport.ssl.keystore.path: certs/elastic-certificates.p12
xpack.security.transport.ssl.truststore.path: certs/elastic-certificates.p12

给认证的集群创建用户密码(只需在一台机器执行，其他同集群机器内部会同步)：

bin/elasticsearch-setup-passwords interactive

#可以给ES中许多内置的用户创建密码

#elastic 账号：拥有 superuser 角色，是内置的超级用户。
#kibana 账号：拥有 kibana_system 角色，用户 kibana 用来连接 elasticsearch 并与之通信。Kibana 服务器以该用户身份提交请求以访问集群监视 API 和 .kibana 索引。不能访问 index。
#logstash_system 账号：拥有 logstash_system 角色。用户 Logstash 在 Elasticsearch 中存储监控信息时使用。
#beats_system账号：拥有 beats_system 角色。用户 Beats 在 Elasticsearch 中存储监控信息时使用。
#elastic是超级用户，它可以做任何事情

完整配置：

# ======================== 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:
#
cluster.name: qt-es-application
#
# ------------------------------------ Node ------------------------------------
#
# Use a descriptive name for the node:
#
node.name: node-1
node.data: true
#
# Add custom attributes to the node:
#
#node.attr.rack: r1
#
# ----------------------------------- Paths ------------------------------------
#
# Path to directory where to store the data (separate multiple locations by comma):
#
path.data: /data/elastic
#
# Path to log files:
#
path.logs: /usr/local/src/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 -----------------------------------
#
# Set the bind address to a specific IP (IPv4 or IPv6):
#
network.host: 0.0.0.0
network.publish_host: 172.16.16.8
#
# Set a custom port for HTTP:
#
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: ["172.16.16.8", "172.16.16.4","172.16.16.7"]
#
# Bootstrap the cluster using an initial set of master-eligible nodes:
#
cluster.initial_master_nodes: ["node-1", "node-2","node-3"]
#
# 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
#
#
http.cors.enabled: true
http.cors.allow-origin: "*"
http.cors.allow-headers: Authorization,X-Requested-With,Content-Length,Content-Type
xpack.security.enabled: true
xpack.license.self_generated.type: basic
xpack.security.transport.ssl.enabled: true
xpack.security.transport.ssl.verification_mode: certificate
xpack.security.transport.ssl.keystore.path: elastic-certificates.p12
xpack.security.transport.ssl.truststore.path: elastic-certificates.p12

为账号配置目录权限

chown -R qtyj:qtyj /usr/local/src/
chown -R qtyj:qtyj /data/elastic/

配置es jvm参数

 vim jvm.options
#根据实际情况调整
#-Xms10g
#-Xmx10g

启动应用

bin/elasticsearch &
#bin/elasticsearch -d

4，查看，验证 （https://www.jianshu.com/p/433d821f9667）
cerebro下载：https://github.com/lmenezes/cerebro/releases
默认端口 9000，访问方式：http://IP+port