官方文档

官方文档很详细，有安装教程和示例

Install InfluxDB | InfluxDB OSS 2.4 Documentation (influxdata.com)

安装部署

docker pull influxdb

docker run -id --name influxdb  -p 8086:8086 influxdb
docker exec -it influxdb /bin/bash

```sh
# influxDB 1.x版本 示例使用1.x版本
go get github.com/influxdata/influxdb1-client/v2
# influxDB 2.x版本
go get github.com/influxdata/influxdb-client-go

基本使用

package main

import (
    "fmt"
    "log"
    "time"

    client "github.com/influxdata/influxdb1-client/v2"
)

// influxdb demo

func connInflux() client.Client {
    cli, err := client.NewHTTPClient(client.HTTPConfig{
        Addr:     "http://127.0.0.1:8086",
        Username: "admin",
        Password: "",
    })
    if err != nil {
        log.Fatal(err)
    }
    return cli
}

// query
func queryDB(cli client.Client, cmd string) (res []client.Result, err error) {
    q := client.Query{
        Command:  cmd,
        Database: "test",
    }
    if response, err := cli.Query(q); err == nil {
        if response.Error() != nil {
            return res, response.Error()
        }
        res = response.Results
    } else {
        return res, err
    }
    return res, nil
}

// insert
func writesPoints(cli client.Client) {
    bp, err := client.NewBatchPoints(client.BatchPointsConfig{
        Database:  "test",
        Precision: "s", //精度，默认ns
    })
    if err != nil {
        log.Fatal(err)
    }
    tags := map[string]string{"cpu": "ih-cpu"}
    fields := map[string]interface{}{
        "idle":   201.1,
        "system": 43.3,
        "user":   86.6,
    }

    pt, err := client.NewPoint("cpu_usage", tags, fields, time.Now())
    if err != nil {
        log.Fatal(err)
    }
    bp.AddPoint(pt)
    err = cli.Write(bp)
    if err != nil {
        log.Fatal(err)
    }
    log.Println("insert success")
}

func main() {
    conn := connInflux()
    fmt.Println(conn)

    // insert
    writesPoints(conn)

    // 获取10条数据并展示
    qs := fmt.Sprintf("SELECT * FROM %s LIMIT %d", "cpu_usage", 10)
    res, err := queryDB(conn, qs)
    if err != nil {
        log.Fatal(err)
    }

    for _, row := range res[0].Series[0].Values {
        for j, value := range row {
            log.Printf("j:%d value:%v\n", j, value)
        }
    }
}