ElasticSearch安装与配置 centos 7 安装 ElasticSearch
安装elasticsearch之前 先要安装java jdk 8
这里提供下载地址：链接: https://pan.baidu.com/s/1ZIJc0JWKMyLl4Iivh-YlBw 密码: gr08
`# 进入opt目录 cd /opt/ # 创建 soft文件夹 用来存储所有的软件 如果你有自己的目录，可以不创建这个目录 mkdir soft cd soft # 执行下载 ElasticSearch 这里使用目前最新的 7.10.1 如果没有wget命令 执行 yum install wget 进行安装 wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.10.1-linux-x86_64.tar.gz # 解压文件 tar -zxvf elasticsearch-7.10.1-linux-x86_64.tar.gz # 修改文件夹名称和移动目录 mv elasticsearch-7.10.1 /opt/elasticsearch # 进入elasticsearch目录 cd /opt/elasticsearch # 默认为了安全，不要使用root进行启动，这里创建一个 elasticsearch 用户和组 # 添加 elasticsearch 组 groupadd elasticsearch # 添加 elasticsearch 用户 并添加到elasticsearch组中 -g 后表示组 useradd elasticsearch -g elasticsearch # 修改文件夹拥有者 表示把elasticsearch文件夹 给elasticsearch用户和elasticsearch组 # 修改这个组之前 先退到elasticsearch的目标文件夹上一级 chown -R elasticsearch:elasticsearch elasticsearch # 修改elasticsearch配置文件 # 进入elasticsearch 的config目录 cd elasticsearch/config/ # 编辑配置文件 参考下面配置文件 vi elasticsearch.yml ## 启动 # 进入 elasticsearch/bin目录 cd bin/ # 使用elasticsearch用户进行启动 sudo -u elasticsearch ./elasticsearch -d # 查询是否启动成功 ps -ef|grep elasticsearch # 查看启动日志 tail -f /opt/elasticsearch/logs/yqzl-service.log # 验证是否成功 curl http://localhost:9200 #出现这个表示成功 :` { "name" : "yqzl-node-1", "cluster_name" : "yqzl-service", "cluster_uuid" : "3wrpP4wwTFCBHdCboBqQfQ", "version" : { "number" : "7.10.1", "build_flavor" : "default", "build_type" : "tar", "build_hash" : "1c34507e66d7db1211f66f3513706fdf548736aa", "build_date" : "2020-12-05T01:00:33.671820Z", "build_snapshot" : false, "lucene_version" : "8.7.0", "minimum_wire_compatibility_version" : "6.8.0", "minimum_index_compatibility_version" : "6.0.0-beta1" }, "tagline" : "You Know, for Search" } ` ` elasticsearch.yml `# ======================== 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 # cluster.name: yqzl-service # # ------------------------------------ Node ------------------------------------ # # Use a descriptive name for the node: 节点名称 # node.name: yqzl-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): # #path.data: /path/to/data # # Path to log files: # #path.logs: /path/to/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): 运行访问的ip 0.0.0.0 表示都可以访问 # network.host: 0.0.0.0 # # 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: ["host1", "host2"] # # Bootstrap the cluster using an initial set of master-eligible nodes: 初始化主节点 # cluster.initial_master_nodes: ["yqzl-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 ` 安装遇到问题 `elasticsearch启动时遇到的错误 elasticsearch用户拥有的内存权限太小，至少需要262144；
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