我正在尝试连接到我的 AWS Aurora 数据库。按照文档指南 3 次以上,我在 mysql 连接上收到了相同的超时错误。深入研究后,我的 lambda 函数似乎根本没有加入 VPC。
我将列出一些输出(删除不必要的行)来展示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。请告诉我。在有人提到之前,是的,我已经多次检查了 db 程序变量;应该是配置问题。
角色:
$ aws lambda get-function-configuration --function-name "test" --output json
{
"FunctionName": "test",
"VpcConfig": {
"SubnetIds": [
"subnet-560b810e",
...
],
"VpcId": "vpc-c3e2f3a7",
"SecurityGroupIds": [
"sg-e029969a"
]
},
"Role": "arn:aws:iam::141066641105:role/test"
}
附政策 list :
$ 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:
$ aws ec2 describe-vpcs --vpc-ids "vpc-c3e2f3a7" --output json
{
"Vpcs": [
{
"VpcId": "vpc-c3e2f3a7",
"State": "available",
"CidrBlock": "172.31.0.0/16",
}
]
}
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
如您所见,由于某种原因,我获取的是 169.254.x.x
地址,而不是 VPC 的 172.31.x.x
。另请注意,数据库属于同一 VPC 中的同一安全组。
最佳答案
您的安全组显示为空IpPermissionsEgress
。
{
"SecurityGroups": [
{
"IpPermissionsEgress": [],
...
如果我没看错的话,这意味着所有出站流量都被阻止。
传统上,导出规则对所有流量开放,前提是您可以信任 Amazon EC2 实例上运行的内容。因此,您可以将其开放给所有流量,或者至少开放给您希望通信的系统。
关于python - AWS Lambda函数未加入VPC,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/43125647/