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  • es集群的安装与配置

    安装es7.5.1
    主机:
      192.168.1.234
      192.168.1.233
      192.168.1.240
    系统:
      centos7
    安装包:
    安装前准备:
    #设置内核参数
    cat > /etc/sysctl.conf << EOF
    vm.max_map_count=655360
    EOF
    sysctl –p
    #设置文件描述符限制
    cat >> /etc/security/limits.conf  << EOF
    * soft nofile 65536
    * hard nofile 131072
    * soft nproc 2048
    * hard nproc 4096
    EOF
    cat >> /etc/security/limits.d/90-nproc.conf  << EOF
    * soft nproc 4096
    EOF
    #解决:Centos6不支持SecComp,而ES5.2.0默认bootstrap.system_call_filter为true
    vim config/elasticsearch.yml
    添加:
    bootstrap.system_call_filter: false
    安装es集群
    1、创建普通用户elastic
    useradd elastic 
    2、安装elasticsearch
    将文件解压解压路径为/home/elastic/
    3、配置es集群
    es1
    cluster.name: es-itcast-cluster 
    node.name: node02 
    node.master: true 
    node.data: true 
    network.host: 192.168.1.233 
    discovery.seed_hosts: ["192.168.1.234","192.168.1.233","192.168.1.240"] 
    cluster.initial_master_nodes: ["node01","node02","node03"] 
    path.data: /var/lib/elasticsearch
    path.logs: /var/log/elasticsearch
    http.port: 9200
    transport.port: 9300
    es2
    cluster.name: es-itcast-cluster 
    node.name: node02 
    node.master: true 
    node.data: true 
    network.host: 192.168.1.234
    discovery.seed_hosts: ["192.168.1.234","192.168.1.233","192.168.1.240"] 
    cluster.initial_master_nodes: ["node01","node02","node03"] 
    path.data: /var/lib/elasticsearch
    path.logs: /var/log/elasticsearch
    http.port: 9200
    transport.port: 9300
    es3
    cluster.name: es-itcast-cluster 
    node.name: node02 
    node.master: true 
    node.data: true 
    network.host: 192.168.1.240
    discovery.seed_hosts: ["192.168.1.234","192.168.1.233","192.168.1.240"] 
    cluster.initial_master_nodes: ["node01","node02","node03"] 
    path.data: /var/lib/elasticsearch
    path.logs: /var/log/elasticsearch
    http.port: 9200
    transport.port: 9300
    4、更改文件权限
    chown -R elastic.elastic /home/elastic
    chown -R elastic.elastic /var/lib/elasticsearch
    chown -R elastic.elastic /var/log/elasticsearch
    5、启动集群
    su - elastic
    cd elasticsearch-7.5.1/bin
    ./elasticsearch &

    这里需要注意: 单点单节点部署Elasticsearch, 集群状态可能为yellow, 因为单点部署Elasticsearch, 默认的分片副本数目配置为1,而相同的分片不能在一个节点上,所以就存在副本分片指定不明确的问题,所以显示为yellow,可以通过在Elasticsearch集群上添加一个节点来解决问题,如果不想这么做,可以删除那些指定不明确的副本分片(当然这不是一个好办法)但是作为测试和解决办法还是可以尝试的,下面试一下删除副本分片的办法:

    [root@elk-server ~]# curl -XPUT "http://localhost:9200/_settings" -d' {  "number_of_replicas" : 0 } '
    {"acknowledged":true}
     
    这个时候再次查看集群的状态状态变成了green
    [root@elk-server ~]# curl -X GET 'http://localhost:9200/_cluster/health?pretty'
    {
      "cluster_name" : "elasticsearch",
      "status" : "green",
      "timed_out" : false,
      "number_of_nodes" : 1,
      "number_of_data_nodes" : 1,
      "active_primary_shards" : 931,
      "active_shards" : 931,
      "relocating_shards" : 0,
      "initializing_shards" : 0,
      "unassigned_shards" : 0,
      "delayed_unassigned_shards" : 0,
      "number_of_pending_tasks" : 0,
      "number_of_in_flight_fetch" : 0,
      "task_max_waiting_in_queue_millis" : 0,
      "active_shards_percent_as_number" : 100.0
    } 
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  • 原文地址:https://www.cnblogs.com/fat-girl-spring/p/12421746.html
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