Tutorial ElasticSearch - Import af en CSV-fil [Trin for trin]

Vil du lære at importere en CSV-fil til ElasticSearch? I denne tutorial vil vi vise dig, hvordan du importerer en CSV-fil til en ElasticSearch-server ved hjælp af Logstash eller Kibana.

• Ubuntu 20
• Ubuntu 19
• Ubuntu 18
• ElasticSearch 7.6.2
• Logstash 7.6.2

I vores eksempel er ElastiSearch-serverens IP-adresse 192.168.100.9.

I vores eksempel vil vi installere Logstash og importere en CSV-fil.

ElasticSearch Relateret Tutorial:

På denne side tilbyder vi hurtig adgang til en liste over tutorials relateret til ElasticSearch installation.

Tutorial Logstash – Installation

Brug apt-get til at installere de nødvendige pakker.

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Find Java-installationsmappen.

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I vores eksempel er Java installeret på følgende mappe: /usr/lib/jvm/java-11-openjdk-amd64

Opret en fil for at konfigurere de nødvendige Java-variabler.

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Her er filindholdet.

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Genstart computeren.

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Kontroller, om systemet automatisk oprettede miljøvariablen med navnet: JAVA_HOME.

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Her er kommandoen output.

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Hent og installer nøglen til ElasticSearch-lageret.

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Føj det officielle ElasticSearch-lager til din APT-database

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Opdater APT-GET-databasen, og installer Logstash-pakken.

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Konfigurer tjenesten Logstash til at starte automatisk.

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Tillykke! Du er færdig med Logstash installation på Ubuntu Linux.

Selvstudium ElasticSearch – Import af en CSV-fil

Opret en CSV-fil.

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Her er vores filindhold.

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I vores eksempel har vi en CSV-fil, der viser Bitcoin daglige pris.

Opret en Logstash-konfigurationsfil.

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Her er vores filindhold.

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Stop tjenesten Logstash.

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Styr tjenesten Logstash ved hjælp af den nye konfigurationsfil.

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Her er kommandoen output.

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{
    "market-price" => 0.0,
        "@version" => "1",
        "datetime" => "datetime",
            "tags" => [
        [0] "_dateparsefailure"
    ],
            "path" => "https://d1ny9casiyy5u5.cloudfront.net/downloads/bitcoin.csv",
         "message" => "datetime,market-price",
      "@timestamp" => 2020-05-11T01:03:13.387Z,
            "host" => "elasticsearch-01.local"
}
{
    "market-price" => 5657.14,
        "@version" => "1",
        "datetime" => "2019-05-04 00:00:00",
            "path" => "https://d1ny9casiyy5u5.cloudfront.net/downloads/bitcoin.csv",
         "message" => "2019-05-04 00:00:00,5657.14",
      "@timestamp" => 2019-05-04T03:00:00.000Z,
            "host" => "elasticsearch-01.local"
}
{
    "market-price" => 5771.08,
        "@version" => "1",
        "datetime" => "2019-05-05 00:00:00",
            "path" => "https://d1ny9casiyy5u5.cloudfront.net/downloads/bitcoin.csv",
         "message" => "2019-05-05 00:00:00,5771.08",
      "@timestamp" => 2019-05-05T03:00:00.000Z,
            "host" => "elasticsearch-01.local"
}
{
    "market-price" => 5717.66,
        "@version" => "1",
        "datetime" => "2019-05-06 00:00:00",
            "path" => "https://d1ny9casiyy5u5.cloudfront.net/downloads/bitcoin.csv",
         "message" => "2019-05-06 00:00:00,5717.66",
      "@timestamp" => 2019-05-06T03:00:00.000Z,
            "host" => "elasticsearch-01.local"
}
{
    "market-price" => 5684.47,
        "@version" => "1",
        "datetime" => "2019-05-07 00:00:00",
            "path" => "https://d1ny9casiyy5u5.cloudfront.net/downloads/bitcoin.csv",
         "message" => "2019-05-07 00:00:00,5684.47",
      "@timestamp" => 2019-05-07T03:00:00.000Z,
            "host" => "elasticsearch-01.local"
}

I vores eksempel har vi importeret en CSV-fil, der indeholder 2 felter til ElasticSearch ved hjælp af Logstash.

I vores eksempel konverterede vi feltet, der indeholder Bitcoin-prisen, til den type numeriske float.

I vores eksempel angiver vi feltet DATETIME som standardtidsstempel.

Kontroller, om indekset blev oprettet på ElasticSearch-serveren.

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Her er kommandoen output.

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Kontroller, om Bitcoin-prisen blev kortlagt som en numerisk værdi.

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Her er kommandoen output.

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{
  "bitcoin" : {
    "mappings" : {
      "properties" : {
        "@timestamp" : {
          "type" : "date"
        },
        "@version" : {
          "type" : "text",
          "fields" : {
            "keyword" : {
              "type" : "keyword",
              "ignore_above" : 256
            }
          }
        },
        "datetime" : {
          "type" : "text",
          "fields" : {
            "keyword" : {
              "type" : "keyword",
              "ignore_above" : 256
            }
          }
        },
        "host" : {
          "type" : "text",
          "fields" : {
            "keyword" : {
              "type" : "keyword",
              "ignore_above" : 256
            }
          }
        },
        "market-price" : {
          "type" : "float"
        },
        "message" : {
          "type" : "text",
          "fields" : {
            "keyword" : {
              "type" : "keyword",
              "ignore_above" : 256
            }
          }
        },
        "path" : {
          "type" : "text",
          "fields" : {
            "keyword" : {
              "type" : "keyword",
              "ignore_above" : 256
            }
          }
        },
        "tags" : {
          "type" : "text",
          "fields" : {
            "keyword" : {
              "type" : "keyword",
              "ignore_above" : 256
            }
          }
        }
      }
    }
  }
}

I vores eksempel blev feltet MARKET-PRICE sat som et floatnummer.

Liste over indholdet af indekset med navnet Bitcoin.

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Her er kommandoen output.

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{
  "took" : 0,
  "timed_out" : false,
  "_shards" : {
    "total" : 1,
    "successful" : 1,
    "skipped" : 0,
    "failed" : 0
  },
  "hits" : {
    "total" : {
      "value" : 11,
      "relation" : "eq"
    },
    "max_score" : 1.0,
    "hits" : [
      {
        "_index" : "bitcoin",
        "_type" : "_doc",
        "_id" : "18eP1nEBeI5DkG2uuA6v",
        "_score" : 1.0,
        "_source" : {
          "market-price" : "market-price",
          "host" : "elasticsearch-01.local",
          "@version" : "1",
          "message" : "Timestamp,market-price",
          "path" : "https://d1ny9casiyy5u5.cloudfront.net/downloads/bitcoin.csv",
          "Timestamp" : "Timestamp",
          "@timestamp" : "2020-05-02T18:04:33.224Z"
        }
      },
      {
        "_index" : "bitcoin",
        "_type" : "_doc",
        "_id" : "2MeP1nEBeI5DkG2uuA6v",
        "_score" : 1.0,
        "_source" : {
          "market-price" : "5657.14",
          "host" : "elasticsearch-01.local",
          "@version" : "1",
          "message" : "2019-05-04 00:00:00,5657.14",
          "path" : "https://d1ny9casiyy5u5.cloudfront.net/downloads/bitcoin.csv",
          "Timestamp" : "2019-05-04 00:00:00",
          "@timestamp" : "2020-05-02T18:04:33.290Z"
        }
      },
      {
        "_index" : "bitcoin",
        "_type" : "_doc",
        "_id" : "2ceP1nEBeI5DkG2uuA6v",
        "_score" : 1.0,
        "_source" : {
          "market-price" : "5771.08",
          "host" : "elasticsearch-01.local",
          "@version" : "1",
          "message" : "2019-05-05 00:00:00,5771.08",
          "path" : "https://d1ny9casiyy5u5.cloudfront.net/downloads/bitcoin.csv",
          "Timestamp" : "2019-05-05 00:00:00",
          "@timestamp" : "2020-05-02T18:04:33.292Z"
        }
      },
      {
        "_index" : "bitcoin",
        "_type" : "_doc",
        "_id" : "2seP1nEBeI5DkG2uuA6w",
        "_score" : 1.0,
        "_source" : {
          "market-price" : "5717.66",
          "host" : "elasticsearch-01.local",
          "@version" : "1",
          "message" : "2019-05-06 00:00:00,5717.66",
          "path" : "https://d1ny9casiyy5u5.cloudfront.net/downloads/bitcoin.csv",
          "Timestamp" : "2019-05-06 00:00:00",
          "@timestamp" : "2020-05-02T18:04:33.298Z"
        }
      },
      {
        "_index" : "bitcoin",
        "_type" : "_doc",
        "_id" : "28eP1nEBeI5DkG2uuA6w",
        "_score" : 1.0,
        "_source" : {
          "market-price" : "5684.47",
          "host" : "elasticsearch-01.local",
          "@version" : "1",
          "message" : "2019-05-07 00:00:00,5684.47",
          "path" : "https://d1ny9casiyy5u5.cloudfront.net/downloads/bitcoin.csv",
          "Timestamp" : "2019-05-07 00:00:00",
          "@timestamp" : "2020-05-02T18:04:33.298Z"
        }
      },
      {
        "_index" : "bitcoin",
        "_type" : "_doc",
        "_id" : "3MeP1nEBeI5DkG2uuA6w",
        "_score" : 1.0,
        "_source" : {
          "market-price" : "5755.72",
          "host" : "elasticsearch-01.local",
          "@version" : "1",
          "message" : "2019-05-08 00:00:00,5755.72",
          "path" : "https://d1ny9casiyy5u5.cloudfront.net/downloads/bitcoin.csv",
          "Timestamp" : "2019-05-08 00:00:00",
          "@timestamp" : "2020-05-02T18:04:33.299Z"
        }
      },
      {
        "_index" : "bitcoin",
        "_type" : "_doc",
        "_id" : "3ceP1nEBeI5DkG2uuA6w",
        "_score" : 1.0,
        "_source" : {
          "market-price" : "5936.72",
          "host" : "elasticsearch-01.local",
          "@version" : "1",
          "message" : "2019-05-09 00:00:00,5936.72",
          "path" : "https://d1ny9casiyy5u5.cloudfront.net/downloads/bitcoin.csv",
          "Timestamp" : "2019-05-09 00:00:00",
          "@timestamp" : "2020-05-02T18:04:33.301Z"
        }
      },
      {
        "_index" : "bitcoin",
        "_type" : "_doc",
        "_id" : "3seP1nEBeI5DkG2uuA6w",
        "_score" : 1.0,
        "_source" : {
          "market-price" : "6146.91",
          "host" : "elasticsearch-01.local",
          "@version" : "1",
          "message" : "2019-05-10 00:00:00,6146.91",
          "path" : "https://d1ny9casiyy5u5.cloudfront.net/downloads/bitcoin.csv",
          "Timestamp" : "2019-05-10 00:00:00",
          "@timestamp" : "2020-05-02T18:04:33.301Z"
        }
      },
      {
        "_index" : "bitcoin",
        "_type" : "_doc",
        "_id" : "38eP1nEBeI5DkG2uuA6w",
        "_score" : 1.0,
        "_source" : {
          "market-price" : "6348.02",
          "host" : "elasticsearch-01.local",
          "@version" : "1",
          "message" : "2019-05-11 00:00:00,6348.02",
          "path" : "https://d1ny9casiyy5u5.cloudfront.net/downloads/bitcoin.csv",
          "Timestamp" : "2019-05-11 00:00:00",
          "@timestamp" : "2020-05-02T18:04:33.302Z"
        }
      },
      {
        "_index" : "bitcoin",
        "_type" : "_doc",
        "_id" : "4MeP1nEBeI5DkG2uuA6w",
        "_score" : 1.0,
        "_source" : {
          "market-price" : "7248.31",
          "host" : "elasticsearch-01.local",
          "@version" : "1",
          "message" : "2019-05-12 00:00:00,7248.31",
          "path" : "https://d1ny9casiyy5u5.cloudfront.net/downloads/bitcoin.csv",
          "Timestamp" : "2019-05-12 00:00:00",
          "@timestamp" : "2020-05-02T18:04:33.302Z"
        }
      }
    ]
  }
}

Tillykke! Du har importeret en CSV-fil til ElasticSearch.

ElasticSearch – Import af en CSV-fil

ElasticSearch – Import af en CSV-fil

ElasticSearch Relateret Tutorial:

Tutorial Logstash – Installation

Selvstudium ElasticSearch – Import af en CSV-fil

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