elasticsearch 6.x 安装

[TOC]

# 概述
环境：centos 7.x（实际是 Alibaba Cloud Linux (Aliyun Linux) 2.1903 LTS (Hunting Beagle)）

单数据节点，非集群方式

# 准备
```
#安装jdk1.8环境
yum install -y java-1.8.0-openjdk-devel.x86_64
#下载es rpm包
wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.2.4.rpm
```
# 安装
```
rpm -ivh elasticsearch-6.2.4.rpm
```

# 配置
## /etc/elasticsearch/jvm.options
```
#按需要更改这两项
-Xms4g
-Xmx4g
```

## /etc/elasticsearch/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:
#
cluster.name: test
#
# ------------------------------------ Node ------------------------------------
#
# Use a descriptive name for the node:
#
node.name: test-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: /var/lib/elasticsearch
#
# Path to log files:
#
path.logs: /var/log/elasticsearch
#
# ----------------------------------- 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: 192.168.1.123
#
# 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 new node is started:
# The default list of hosts is ["127.0.0.1", "[::1]"]
#
discovery.zen.ping.unicast.hosts: ["192.168.1.123"]
#
# Prevent the "split brain" by configuring the majority of nodes (total number of master-eligible nodes / 2 + 1):
#
#discovery.zen.minimum_master_nodes: 
#
# For more information, consult the zen discovery 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

```
# 启动
```
systemctl enable elasticsearch
systemctl start elasticsearch
```

# 检查
```
#看看9200和9300是否监听上
netstat -tpnl
```

# 根据业务需求创建索引
```
PUT /test_xxx_user_info
{
  "settings": { "number_of_shards": 1, "number_of_replicas": 1 },
  "mappings": {
  "_doc": {
    "properties": {
      "avatar": {
        "type": "text",
        "fields": {
          "keyword": {
            "type": "keyword",
            "ignore_above": 256
          }
        }
      },
      "birthday": {
        "type": "text"
      },
      "coms": {
        "properties": {
          "avatar": {
            "type": "text",
            "fields": {
              "keyword": {
                "type": "keyword",
                "ignore_above": 256
              }
            }
          },
          "job_grade_id": {
            "type": "long"
          },
          "job_grade_name": {
            "type": "text",
            "fields": {
              "keyword": {
                "type": "keyword",
                "ignore_above": 256
              }
            }
          },
          "job_post_name": {
            "type": "text"
          },
          "join_time": {
            "type": "text"
          },
          "leave_time": {
            "type": "text"
          },
          "org_id": {
            "type": "long"
          },
          "org_name": {
            "type": "keyword"
          },
          "staff_id": {
            "type": "keyword"
          },
          "staff_name": {
            "type": "keyword"
          },
          "status": {
            "type": "long"
          },
          "tenant_id": {
            "type": "long"
          }
        }
      },
      "dept_relates": {
        "properties": {
          "dept_id": {
            "type": "long"
          },
          "dept_name": {
            "type": "keyword"
          },
          "org_id": {
            "type": "long"
          },
          "tenant_id": {
            "type": "long"
          }
        }
      },
      "depts": {
        "properties": {
          "dept_id": {
            "type": "long"
          },
          "dept_name": {
            "type": "keyword"
          },
          "is_default": {
            "type": "boolean"
          },
          "job_post_id": {
            "type": "long"
          },
          "job_post_name": {
            "type": "text"
          },
          "leader_id": {
            "type": "long"
          },
          "org_id": {
            "type": "long"
          },
          "org_name": {
            "type": "text",
            "fields": {
              "keyword": {
                "type": "keyword",
                "ignore_above": 256
              }
            }
          },
          "tenant_id": {
            "type": "long"
          }
        }
      },
      "gender": {
        "type": "long"
      },
      "id": {
        "type": "keyword"
      },
      "identity": {
        "type": "keyword"
      },
      "logged": {
        "type": "long"
      },
      "orgs": {
        "properties": {
          "is_default": {
            "type": "boolean"
          },
          "job_post_id": {
            "type": "long"
          },
          "job_post_name": {
            "type": "text",
            "fields": {
              "keyword": {
                "type": "keyword",
                "ignore_above": 256
              }
            }
          },
          "leader_id": {
            "type": "long"
          },
          "org_id": {
            "type": "long"
          },
          "org_name": {
            "type": "keyword"
          },
          "tenant_id": {
            "type": "long"
          }
        }
      },
      "orgs_relates": {
        "properties": {
          "org_id": {
            "type": "long"
          },
          "org_name": {
            "type": "keyword"
          },
          "tenant_id": {
            "type": "long"
          }
        }
      },
      "phone": {
        "type": "keyword"
      },
      "real_name": {
        "type": "keyword"
      },
      "roles": {
        "properties": {
          "role_id": {
            "type": "long"
          },
          "role_name": {
            "type": "text",
            "fields": {
              "keyword": {
                "type": "keyword",
                "ignore_above": 256
              }
            }
          },
          "tenant_id": {
            "type": "long"
          }
        }
      },
      "user_id": {
        "type": "long"
      }
    }
  }
  }
}
```

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