[大数据]logstash同步数据库数据到es

1 上传并解压logstash

2 创建文件夹sync并在里面创建文件logstash-db-sync.conf，logstash.sql，track_time把数据库驱动移到该文件夹下

3 配置logstash-db-sync.conf文件内内容

input {
    jdbc {
        # 设置 MySql/MariaDB 数据库url以及数据库名称
        jdbc_connection_string => "jdbc:mysql://ip:3306/foodie?useUnicode=true&characterEncoding=UTF-8&autoReconnect=true"
        # 用户名和密码
        jdbc_user => "root"
        jdbc_password => "qqqqqqqqqqq"
        # 数据库驱动所在位置，可以是绝对路径或者相对路径
        jdbc_driver_library => "/usr/local/logstash-6.4.3/sync/mysql-connector-java-5.1.41.jar"
        # 驱动类名
        jdbc_driver_class => "com.mysql.jdbc.Driver"
        # 开启分页
        jdbc_paging_enabled => "true"
        # 分页每页数量，可以自定义
        jdbc_page_size => "1000"
        # 执行的sql文件路径
        statement_filepath => "/usr/local/logstash-6.4.3/sync/logstash.sql"
        # 设置定时任务间隔  含义：分、时、天、月、年，全部为*默认含义为每分钟跑一次任务
        schedule => "* * * * *"
        # 索引类型
        type => "_doc"
        # 是否开启记录上次追踪的结果，也就是上次更新的时间，这个会记录到 last_run_metadata_path 的文件
        use_column_value => true
        # 记录上一次追踪的结果值
        last_run_metadata_path => "/usr/local/logstash-6.4.3/sync/track_time"
        # 如果 use_column_value 为true， 配置本参数，追踪的 column 名，可以是自增id或者时间
        tracking_column => "updated_time"
        # tracking_column 对应字段的类型
        tracking_column_type => "timestamp"
        # 是否清除 last_run_metadata_path 的记录，true则每次都从头开始查询所有的数据库记录
        clean_run => false
        # 数据库字段名称大写转小写
        lowercase_column_names => false
    }
}
output {
    elasticsearch {
        # es地址
        hosts => ["ip:9200"]
        # 同步的索引名
        index => "foodie-items"
        # 设置_docID和数据相同
        document_id => "%{itemId}"
        # 定义模板
        template_name = "myik"
        # 指定模板所在位置
        template = "/usr/local/logstash-6.4.3/sync/logstash-ik.json"
        # 重写模板
        template_overwrite => true
        # 关闭自动管理模板功能
        manage_template => false
    }
    # 日志输出:
    stdout {
        codec => json_lines
    }
}

4 创建logstash.sql文件类容，即你要同步的数据

SELECT
	i.id as itemId,
	i.item_name as itemName,
	i.sell_counts as sellCounts,
	ii.url as imgUrl,
	tempSpec.price_discount as price,
	i.updated_time as updated_time
FROM
	items i
LEFT JOIN
	items_img ii
on
	i.id = ii.item_id
LEFT JOIN
	(SELECT item_id,MIN(price_discount) as price_discount FROM items_spec) tempSpec
on 
	i.id = tempSpec.item_id
WHERE
	ii.is_main = 1
	and
	i.updated_time >= :sql_last_value   -- 这个时间是从track_time获取

5 添加分词模板

{
    "order": 0,
    "version": 1,
    "index_patterns": ["*"],
    "settings": {
        "index": {
            "refresh_interval": "5s"
        }
    },
    "mappings": {
        "_default_": {
            "dynamic_templates": [
                {
                    "message_field": {
                        "path_match": "message",
                        "match_mapping_type": "string",
                        "mapping": {
                            "type": "text",
                            "norms": false
                        }
                    }
                },
                {
                    "string_fields": {
                        "match": "*",
                        "match_mapping_type": "string",
                        "mapping": {
                            "type": "text",
                            "norms": false,
                            "analyzer": "ik_max_word",
                            "fields": {
                                "keyword": {
                                    "type": "keyword",
                                    "ignore_above": 256
                                }
                            }
                        }
                    }
                }
            ],
            "properties": {
                "@timestamp": {
                    "type": "date"
                },
                "@version": {
                    "type": "keyword"
                },
                "geoip": {
                    "dynamic": true,
                    "properties": {
                        "ip": {
                            "type": "ip"
                        },
                        "location": {
                            "type": "geo_point"
                        },
                        "latitude": {
                            "type": "half_float"
                        },
                        "longitude": {
                            "type": "half_float"
                        }
                    }
                }
            }
        }
    },
    "aliases": {}
}

6 启动logstash ./logstash -f /usr/local/logstash-6.4.3/sync/logstash-db-sync.conf

注：后台启动为：nohup ./logstash -f /usr/local/logstash-6.4.3/sync/logstash-db-sync.conf &