背景：

日志存放到es中，设置7天自动删除索引，将副本数设置为0，节省磁盘空间

方法一：

1.设置生命管理策略

2.创建索引模板，关联索引

3.查看引用生命周期策略的索引

方法二：

"policy": {
    "phases": {
      "delete": {
        "min_age": "7d",
        "actions": {
          "delete": {}
        }
      }
    }
  }
}

PUT _template/my_template_iolog
{
  "index_patterns": ["iolog_pro*"],
  "settings": {
    "number_of_replicas": 0,
    "index.lifecycle.name": "my_policy"
  }
}


PUT _template/my_template_proglog
{
  "index_patterns": [
    "proglog_pro*"
  ],
  "settings": {
    "number_of_replicas": 0,
    "index.lifecycle.name": "my_policy"
  }
}