Question

有没有一种方法可以按标签名称列出aws中的所有负载均衡器？

我在他们的Fiddle中找不到任何内容

可以做到吗？怎么样？

Answer 1

我不熟悉Golang AWS开发工具包，但如果是我自己，并且我在SDK文档中找不到它，那么我将查阅AWS CLI文档并在其中找到命令，因为它们可能会转换为SDK或更糟在Golang中运行case命令以执行CLI并获得相同的结果。

GetResources

https://docs.aws.amazon.com/cli/latest/reference/resourcegroupstaggingapi/get-resources.html

返回所有与位于指定区域中的指定标签（键和值） AWS帐户。

因此您可以使用它来获取具有特定标记的所有资源，然后在Golang中遍历结果以仅选择ELB

看起来您可以在一个命令中同时按标记和资源进行过滤：

看起来该命令确实存在于golang sdk

https://docs.aws.amazon.com/sdk-for-go/api/service/resourcegroupstaggingapi/#ResourceGroupsTaggingAPI.GetResources

我想我上面强调的选项对您可用。

Golang中的执行

您将使用exec之类的东西。 https://golang.org/pkg/os/exec/

本教程可能包含如何也从exec获取结果的方法 https://nathanleclaire.com/blog/2014/12/29/shelled-out-commands-in-golang/

示例代码

package main

import (
    "fmt"
    "strings"

    "github.com/aws/aws-sdk-go/aws"
    "github.com/aws/aws-sdk-go/aws/credentials"
    "github.com/aws/aws-sdk-go/aws/session"
    "github.com/aws/aws-sdk-go/service/elb"
    "github.com/aws/aws-sdk-go/service/resourcegroupstaggingapi"
)

const (
    // ProviderName is the cloud provider providing loadbalancing functionality
    ProviderName = "aws"
)

// ELB is the struct implementing the lbprovider interface
type ELB struct {
    client            *elb.ELB
    elbResourceName   string
    resourceapiClient *resourcegroupstaggingapi.ResourceGroupsTaggingAPI
}

// NewELB is the factory method for ELB
func NewELB(id string, secret string, region string) (*ELB, error) {
    awsConfig := &aws.Config{
        Region:      aws.String(region),
        Credentials: credentials.NewStaticCredentials(id, secret, ""),
    }

    awsConfig = awsConfig.WithCredentialsChainVerboseErrors(true)
    sess, err := session.NewSession(awsConfig)
    if err != nil {
        return nil, fmt.Errorf("Unable to initialize AWS session: %v", err)
    }

    return &ELB{
        client:            elb.New(sess),
        resourceapiClient: resourcegroupstaggingapi.New(sess),
        elbResourceName:   "elasticloadbalancing",
    }, nil
}

// GetLoadbalancersByTag gets the loadbalancers by tag
func (e *ELB) GetLoadbalancersByTag(tagKey string, tagValue string) ([]string, error) {
    tagFilters := &resourcegroupstaggingapi.TagFilter{}
    tagFilters.Key = aws.String(tagKey)
    tagFilters.Values = append(tagFilters.Values, aws.String(tagValue))

    getResourcesInput := &resourcegroupstaggingapi.GetResourcesInput{}
    getResourcesInput.TagFilters = append(getResourcesInput.TagFilters, tagFilters)
    getResourcesInput.ResourceTypeFilters = append(
        getResourcesInput.ResourceTypeFilters,
        aws.String(e.elbResourceName),
    )

    resources, err := e.resourceapiClient.GetResources(getResourcesInput)
    if err != nil {
        return nil, err
    }

    elbs := []string{}
    for _, resource := range resources.ResourceTagMappingList {
        elbs = append(elbs, strings.Split(*resource.ResourceARN, "/")[1])
    }
    return elbs, nil
}

Answer 2

您可以简单地遍历ELB列表并按标签进行过滤。

    svc := elbv2.New(...)

    input := &elbv2.DescribeLoadBalancersInput{
            LoadBalancerArns: []*string{},
    }

    result, _ := svc.DescribeLoadBalancers(input)

    var list_of_arns []*string
    for _, lb := range result.LoadBalancers{
            list_of_arns = append(list_of_arns, lb.LoadBalancerArn)
    }

    input2 := &elbv2.DescribeTagsInput{
            ResourceArns: list_of_arns,
    }

    result2, _ := svc.DescribeTags(input2)
    fmt.Println(result2.TagDescriptions)

使用go通过标签列出AWS中的负载均衡器

2 个答案:

GetResources

Golang中的执行

示例代码