elasticsearch5.4.3安装

安装前准备：

1. 安装jdk1.8并配置环境变量

2. 资源调整

2.1 避免错误：max number of threads [1024] for user [work] likely too low, increase to at least [2048]

[root@EPRI-DCLOUD-ES04 dcloud]# cat /etc/security/limits.d/90-nproc.conf 
# Default limit for number of user's processes to prevent
# accidental fork bombs.
# See rhbz #432903 for reasoning.
*          soft    nproc     2048
root       soft    nproc     unlimited

2.2 避免错误：max virtual memory areas vm.max_map_count [65530] likely too low, increase to at least [262144]

#vi /etc/sysctl.conf 
增加改行配置：vm.max_map_count=262144  
保存退出后，执行：  
sysctl -p

2.3 避免错误：max file descriptors [4096] for elasticsearch process likely too low, increase to at least [65536]

vi /etc/security/limits.conf
添加：
*               soft    nproc           65536
*               hard    nproc           65536
*               soft    nofile          65536
*               hard    nofile          65536

配置默认模板

curl -XPUT 'http://192.168.6.68:9200/_template/rtf' -H 'Content-Type: application/json' -d'
{
  "template":   "*", 
  "settings": { "number_of_shards": 1 }, 
  "mappings": {
    "_default_": {
      "_all": { 
        "enabled": true
      },
      "dynamic_templates": [
        {
          "strings": { 
            "match_mapping_type": "string",
            "mapping": {
              "type": "text",
              "analyzer":"ik_max_word",
              "ignore_above": 256,
              "fields": {
                "keyword": {
                  "type":  "keyword"
                }
              }
            }
          }
        }
      ]
    }
  }
}'

chmod u+x grunt