Go以AWS SDK aws-sdk-go-v2
建立EC2 instance。
事前要求
參考「AWS 建立IAM管理使用者及credentials」設定供應用程式存取AWS需要的credentials。
參考「Golang 建立AWS VPC」建立VPC。
建立EC2 instance
呼叫ec2.Client.RunInstances
傳入參數ec2.RunInstancesInput
來建立instance。
建立的EC2 instance要啟用AWS自動配發的public IP位址,要特別設定ec2.RunInstancesInput.NetworkInterfaces
的InstanceNetworkInterfaceSpecification.AssociatePublicIpAddress
為true。
ec2.RunInstancesInput.TagSpecifications
新增多個tag資訊,填入types.TagSpecification
。
types.TagSpecification.ResourceType
填入types.ResourceTypeInstance
。
types.TagSpecification.Tags
填入多個types.Tag
,設定types.Tag.Key
為"Name"的值為instance的名稱。
main.go
package main
import (
"context"
"fmt"
"time"
"github.com/aws/aws-sdk-go-v2/aws"
"github.com/aws/aws-sdk-go-v2/config"
"github.com/aws/aws-sdk-go-v2/service/ec2"
"github.com/aws/aws-sdk-go-v2/service/ec2/types"
)
func main() {
ctx := context.TODO()
client := NewEC2Client(ctx)
instanceName := "demo-ec2-instance-002"
imageId := "ami-0e0820ad173f20fbb" // Amazon Linux 2023 AMI 2023.0.20230503.0 x86_64 HVM kernel-6.1
KeyName := "demo-key" // key pairs name
securityGroupId := "sg-0e44d58befeb89923"
subnetId := "subnet-05c7f25587be4dc58"
input := &ec2.RunInstancesInput{
MaxCount: aws.Int32(1),
MinCount: aws.Int32(1),
DisableApiStop: aws.Bool(false),
ImageId: &imageId,
InstanceType: types.InstanceTypeT2Micro,
KeyName: &KeyName,
NetworkInterfaces: []types.InstanceNetworkInterfaceSpecification{
{
AssociatePublicIpAddress: aws.Bool(true),
DeleteOnTermination: aws.Bool(true),
DeviceIndex: aws.Int32(0),
Groups: []string{
securityGroupId,
},
InterfaceType: aws.String("interface"),
NetworkCardIndex: aws.Int32(0),
SubnetId: &subnetId,
},
},
TagSpecifications: []types.TagSpecification{
{
ResourceType: types.ResourceTypeInstance,
Tags: []types.Tag{
{
Key: aws.String("Name"),
Value: aws.String(instanceName),
},
},
},
},
}
output, err := client.RunInstances(ctx, input)
if err != nil {
panic(err)
}
waiter := ec2.NewInstanceRunningWaiter(client)
describeInput := &ec2.DescribeInstancesInput{
InstanceIds: []string{aws.ToString(output.Instances[0].InstanceId)},
}
maxWaitDur := 60 * time.Second
describeOutput, err := waiter.WaitForOutput(ctx, describeInput, maxWaitDur)
if err != nil {
panic(err)
}
instance := describeOutput.Reservations[0].Instances[0]
fmt.Println(*instance.InstanceId) // i-0dbcc73ace6b52d42
fmt.Println(*instance.SubnetId) // subnet-05c7f25587be4dc58
fmt.Println(*instance.NetworkInterfaces[0].NetworkInterfaceId) // eni-0cd6cc75c832083f3
fmt.Println(*instance.PublicIpAddress) // 3.112.238.189
fmt.Println(*instance.PrivateIpAddress) // 10.1.0.53
}
func NewEC2Client(ctx context.Context) *ec2.Client {
cfg, err := config.LoadDefaultConfig(
ctx,
config.WithRegion("ap-northeast-1"),
)
if err != nil {
panic(err)
}
return ec2.NewFromConfig(cfg) // Create an Amazon EC2 service client
}
測試
執行Go應用程式輸出以下結果。
i-0dbcc73ace6b52d42
subnet-05c7f25587be4dc58
eni-0cd6cc75c832083f3
3.112.238.189
10.1.0.53
在AWS console檢視新建立的instance。
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