Python AWS Lambda功能未加入VPC

我正在尝试连接到我的AWS Aurora DB。遵循文档指南3次之后，我在mysql连接上收到了相同的超时错误。深入研究之后，我的lambda功能似乎根本没有加入VPC

我将列出一些输出（删除不必要的行），以说明我是如何得出这个结论的

如果有人能指出我的配置哪里出了问题。请让我知道。在任何人提到它之前，是的，我已经检查了很多次db程序变量；这必须是一个配置问题

角色：

随附保单清单：

$ aws iam list-attached-role-policies --role-name test --output json
{
    "AttachedPolicies": [
        {
            "PolicyName": "AWSLambdaVPCAccessExecutionRole",
            "PolicyArn": "arn:aws:iam::aws:policy/service-role/AWSLambdaVPCAccessExecutionRole"
        }
    ]
}

专有网络：

安全组：

$ aws ec2 describe-security-groups --group-ids "sg-e029969a" --output json
{
    "SecurityGroups": [
        {
            "IpPermissionsEgress": [],
            "IpPermissions": [
                {
                    "PrefixListIds": [],
                    "FromPort": 0,
                    "IpRanges": [],
                    "ToPort": 65535,
                    "IpProtocol": "tcp",
                    "UserIdGroupPairs": [
                        {
                            "UserId": "141066641105",
                            "GroupId": "sg-e029969a"
                        }
                    ]
                },
            ],
            "GroupName": "db-access",
            "VpcId": "vpc-c3e2f3a7",
            "OwnerId": "141066641105",
            "GroupId": "sg-e029969a"
        }
    ]
}

IP地址python代码：

import socket
response = socket.gethostbyname('test.db')
logger.log("test.db IP: " + response)

import subprocess
command = "/sbin/ip addr show"
process = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=None, shell=True)
response = process.communicate()
logger.error("IP command: " + response[0])

IP地址输出：

test.db IP: 172.31.29.170
IP command: 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
57: vinternal_19@if58: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 8a:ae:cc:86:d7:e7 brd ff:ff:ff:ff:ff:ff link-netnsid 2
    inet 169.254.76.37/23 scope global vinternal_19
       valid_lft forever preferred_lft forever
60: vtarget_10@if59: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 72:6b:24:a0:47:d4 brd ff:ff:ff:ff:ff:ff link-netnsid 1
    inet 169.254.79.1/32 scope global vtarget_10
       valid_lft forever preferred_lft forever

test.db IP:172.31.29.170
IP命令：1:lo:mtu 65536 qdisc noqueue状态未知组默认qlen 1
链接/环回00:00:00:00:00 brd 00:00:00:00:00:00:00
inet 127.0.0.1/8范围主机lo
永远有效\u lft首选\u lft永远有效
57:vinternal_19@if58：mtu 1500 qdisc noqueue state UP组默认qlen 1000
链路/以太8a:ae:cc:86:d7:e7 brd ff:ff:ff:ff:ff:ff:ff链路网络ID 2
inet 169.254.76.37/23范围全球葡萄酒19
永远有效\u lft首选\u lft永远有效
60:V目标_10@if59：mtu 1500 qdisc noqueue state UP组默认qlen 1000
链路/以太网72:6b:24:a0:47:d4 brd ff:ff:ff:ff:ff:ff:ff:ff链路网络ID 1
inet 169.254.79.1/32范围全局vtarget_10
永远有效\u lft首选\u lft永远有效

---

如你所见，出于某种原因，我得到的是

169.254.x.x

地址，而不是VPC的

172.31.x.x

。还需要注意的是，数据库是同一VPC中同一安全组的一部分。

您的安全组显示为空

IpPermissionsEgress

{
    "SecurityGroups": [
        {
            "IpPermissionsEgress": [],
            ...

如果我读对了，那就意味着所有出站流量都被阻塞了

---

传统上，出口规则对所有流量开放，前提是您可以信任AmazonEC2实例上运行的内容。因此，您可以向所有流量或至少向您希望通信的系统打开它。

您的安全组显示为空

IpPermissionsEgress

。如果我读对了，那就意味着所有的出站流量都被阻塞了。顺便说一句，它对于调试Lambda环境很方便。同意@JohnRotenstein的观点，该函数不能在安全组之外通信，因为所有出口都被阻止，只允许进入。您可以添加0.0.0.0/0（默认值）的出口规则，或将其设置为Aurora数据库的安全组You is correct@John Rotenstein。这就是问题所在。谢谢

test.db IP: 172.31.29.170
IP command: 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
57: vinternal_19@if58: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 8a:ae:cc:86:d7:e7 brd ff:ff:ff:ff:ff:ff link-netnsid 2
    inet 169.254.76.37/23 scope global vinternal_19
       valid_lft forever preferred_lft forever
60: vtarget_10@if59: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 72:6b:24:a0:47:d4 brd ff:ff:ff:ff:ff:ff link-netnsid 1
    inet 169.254.79.1/32 scope global vtarget_10
       valid_lft forever preferred_lft forever

{
    "SecurityGroups": [
        {
            "IpPermissionsEgress": [],
            ...