【全栈起步】elasticsearch安装与配置

之前已经在测试环境安装了 8.11版本， 奈何线上用的阿里云的云服务，版本还是 7.10， 导致很多查询结果不一致， 便只能重装了，才过几天竟然忘的差不多了，便记录下

Install Elasticsearch with Debian Package | Elasticsearch Guide [7.10] | Elastic

这是官方的文档, 先大概记录先剩下的后续再慢慢补充

对比8.11, 7.10 的配置文件少了很多预置内容, 导致我一脸懵, 借助搜索

1. 首先我已经启动服务

curl 127.0.0.1:9200 

可以看到响应内容, 代表服务已经正常启动, 如果要开启密码访问, 则在elasticsearch.yml配置文件中添加

xpack.security.enabled: true

然后

sudo systemctl restart elasticsearch

然后

cd /usr/share/elasticsearch
sh ./bin/elasticsearch-setup-passwords interactive

这个地方一下子让我输入了6个密码, 我之前8.11 好像就只输入了一个 elastic账户的, 此时在访问已经401了

export ELASTIC_PASSWORD="your_password"

如果密码中有 @!#什么的特殊字符, 则最好使用单引号

curl -u elastic:$ELASTIC_PASSWORD http://127.0.0.1:9200
{
  "name" : "app-test-server",
  "cluster_name" : "elasticsearch",
  "cluster_uuid" : "OUr9G7mBQIi1Zrft5wQaWw",
  "version" : {
    "number" : "7.10.0",
    "build_flavor" : "default",
    "build_type" : "deb",
    "build_hash" : "51e9d6f22758d0374a0f3f5c6e8f3a7997850f96",
    "build_date" : "2020-11-09T21:30:33.964949Z",
    "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"
}

如果我使用外网ip则提示连接失败,

$ curl -u elastic:$ELASTIC_PASSWORD http://8.xxx.xxx.xxx:9200
curl: (7) Failed to connect to 8.xxx.xxx.xxx port 9200 after 0 ms: Couldn't connect to server

编辑 elasticsearch.yml

记得restart服务 此时服务可能会重启失败, 看日志是

[2] bootstrap checks failed
[1]: the default discovery settings are unsuitable for production use; at least one of [discovery.seed_hosts, discovery.seed_providers, cluster.initial_master_nodes] must be configured
[2]: Transport SSL must be enabled if security is enabled on a [basic] license. Please set [xpack.security.transport.ssl.enabled] to [true] or disable security by setting [xpack.security.enabled] to [false]

一个是节点发现, 我配置了

cluster.initial_master_nodes: ["host-name-xxx"]

另外启用

xpack.security.http.ssl:
  enabled: false

# Enable encryption and mutual authentication between cluster nodes
xpack.security.transport.ssl:
  enabled: true
  truststore.path: certs/transport.p12

http.host: 0.0.0.0

此时再重启服务就正常了

$ curl -u elastic:$ELASTIC_PASSWORD http://8.xxx.xxx.xxx:9200
{
  "name" : "app-test-server",
  "cluster_name" : "elasticsearch",
  "cluster_uuid" : "OUr9G7mBQIi1Zrft5wQaWw",
  "version" : {
    "number" : "7.10.0",
    "build_flavor" : "default",
    "build_type" : "deb",
    "build_hash" : "51e9d6f22758d0374a0f3f5c6e8f3a7997850f96",
    "build_date" : "2020-11-09T21:30:33.964949Z",
    "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"
}