是否可以复制AWS安全组？

我们有一些安全组，其中包含很多规则。不必为了适应微小差异而为多个安全组重新创建相同的规则，是否可以复制安全组用作起点或使用继承等？

您似乎无法从Web界面复制安全组。但是，您可以使用AWS CLI来创建安全组：

命令：

$ aws ec2 describe-security-groups --group-id MySecurityGroupID

输出：

{
    "securityGroupInfo": [
        {
            "ipPermissionsEgress": [],
            "groupId": "sg-903004f8",
            "ipPermissions": [],
            "groupName": "MySecurityGroup",
            "ownerId": "803981987763",
            "groupDescription": "AWS-CLI-Example"
        }
    ],
    "requestId": "afb680df-d7b1-4f6a-b1a7-344fdb1e3532"
}

并使用命令添加规则：

aws ec2 authorize-security-group-ingress --group-id MySecurityGroupID --ip-protocol tcp --from-port 22 --to-port 22 --cidr-ip 0.0.0.0/0

输出：

{
    "return": "true",
    "requestId": "c24a1c93-150b-4a0a-b56b-b149c0e660d2"
}

从那里您应该能够弄清楚如何简化安全组的创建。

AWS EC2控制台允许您选择安全组并立即在UI中执行“复制到新”操作。

在AWS创建安全组文档中，您可以使用控制台复制安全组。

1. 选择您要复制的安全组
2. 选择动作
3. 复制到新

考虑看看这个博客。它可能对您正在查看的内容很有用。

http://ry4an.org/unblog/post/ec2_security_group_tools/

这是我编写的自定义库中的“复制安全组” python / boto方法，它使这些事情变得更容易/使它们自动化。.最终，这是我想出的解决方案。

vpcId is the Virtual Private Cloud Id
keys is a dictionary with your AWS keys

其余的应该直接弄清楚。

def copyEC2SecurityGroup(self, keys, region, securityGroupName, newSecurityGroupName = None, newRegion = None, vpcId = None):


newEc2Connection = None
print("Creating ec2Connection for source region: " + region)
ec2Connection = lib.getEc2Connection(region, keys)

if newRegion is None:
    newRegion = region
else:
    print("New Region Detected, creating for New region: " + newRegion)
    newEc2Connection = lib.getEc2Connection(newRegion, keys)
    newRegionInfo = newEc2Connection.region

print("new region is: %s" % newRegion)

if newSecurityGroupName is None:
    newSecurityGroupName = securityGroupName

print ("new security group is: %s" % newSecurityGroupName)

# if copying in the same region the new security group cannot have the same name.
if newRegion == region:
    if newSecurityGroupName == securityGroupName:
        print ("Old and new security groups cannot have the same name when copying to the same region.")
        exit(1)

groups = [group for group in ec2Connection.get_all_security_groups() if group.name == securityGroupName]
print"got groups count " + str(len(groups))
if groups:
    theOldGroup = groups[0]
    print theOldGroup.rules
else:
    print("Can't find security group by the name of: %s" % securityGroupName)
    exit(1)
print groups
pprint(theOldGroup)

if newEc2Connection is not None:
    print("Creating new security group in new region")
    sg = newEc2Connection.create_security_group(newSecurityGroupName, newSecurityGroupName, vpcId)
    sleep(5)
else:
    print("Creating new security group in current region")
    sg = ec2Connection.create_security_group(newSecurityGroupName, newSecurityGroupName, vpcId)
    sleep(5)

source_groups = []
for rule in theOldGroup.rules:
    for grant in rule.grants:
        strGrant = str(grant)
        print(strGrant)
        if strGrant.startswith("sg"):
            print("Cannot copy 'security group rule' (%s)... only cidr_ip's e.g. xxx.xxx.xxx.xxx/yy." % strGrant)
            continue
        grant_nom = grant.name or grant.group_id
        if grant_nom:
            if grant_nom not in source_groups:
                source_groups.append(grant_nom)
                sg.authorize(rule.ip_protocol, rule.from_port, rule.to_port, grant)
        else:
            sg.authorize(rule.ip_protocol, rule.from_port, rule.to_port, grant.cidr_ip)
return sg 

这是我完成此任务的脚本：aws_sg_migrate

样本用法为

python3 aws_sg_migrate.py --vpc=vpc-05643b6c --shell --src=us-east-1 --dest=us-west-1 sg-111111

它基于此，并且适用于Python3。

在同一AWS区域内，您可以使用在线GUI复制安全策略。但是，有时您希望以编程方式复制内容。例如，如果要复制很多安全策略，或者要跨区域复制。

这是一个简单的代码片段。

import boto3
from os import environ as env


def copy_security_groups(src_region, tgt_region, grp_names):

    # Initialize client connections for regions
    src_client = boto3.client('ec2', region_name=src_region,
                              aws_access_key_id=env['AWS_ACCESS_KEY_ID'],
                              aws_secret_access_key=env['AWS_SECRET_ACCESS_KEY'])
    tgt_client = boto3.client('ec2', region_name=tgt_region,
                              aws_access_key_id=env['AWS_ACCESS_KEY_ID'],
                              aws_secret_access_key=env['AWS_SECRET_ACCESS_KEY'])

    # Get info for all security groups and copy them one-by-one
    g_info = src_client.describe_security_groups(
        GroupNames=grp_names)['SecurityGroups']
    for g in g_info:
        resp = tgt_client.create_security_group(
            GroupName=g['GroupName'], Description=g['Description'])
        new_grp_id = resp['GroupId']
        tgt_client.authorize_security_group_ingress(
            GroupId=new_grp_id, IpPermissions=g['IpPermissions'])
        tgt_client.authorize_security_group_egress(
            GroupId=new_grp_id, IpPermissions=g['IpPermissionsEgress'])


if __name__ == '__main__':
    copy_security_groups('us-east-1', 'ap-south-1', ['rds-public'])

由于缺乏适当的在线方法，因此我创建了一个超级简单的脚本来处理它。看看是否有兴趣。

https://github.com/pedropregueiro/migrate-ec2-secgroups

在EC2控制台中，单击“启动实例”，然后继续输入虚拟信息，直到进入“安全组”部分。

从此处单击“选择现有安全组”，然后在下面将看到该特定VPC拥有的所有安全组。您应该在“操作”下看到“复制到新”链接，使用该链接将所有ACL复制到新的SG。

或者我想您可以使用脚本-这是更快的IMO。

我有一个类似的问题，但在不同帐户之间复制了SG。

只需在开头指定一些常量，函数copy_sg就会复制它们。

没有错误检查，因此如果目标SG已经存在，它将失败。

请遵循可以在帐户内使用的一般解决方案：

#!/usr/bin/env python3
# coding: utf-8

import boto3
from typing import Any,  List

# This profile needs to be able to assume the specified role in SRC/TGT account
appops_session = boto3.Session(profile_name='YOUR_PRECONFIGURE_PROFILE')

ROLE = "THE ROLE TO BE ASSUMED"  # I presume it is the same in SRC/TGT Account
SRC_ACCOUNT = "YOUR SRC ACCOUNT NUMBER"

TGT_REGION = "eu-central-1"
DST_ACCOUNT = "YOUR TARGET ACCOUNT NUMBER"
TGT_VPC = "vpc-XXXXXXXXXXXXXXX"

region = "ap-southeast-2"
dst_vpc_id = "vpc-XXXXXXXXXXXXXXX"
sg_list = ["sg-XXXXXXXX", "sg-YYYYYYYYY"]

def aws_sts_cred(account, role):
    """Get the STS credential.

    return  credential_object
    """
    sts_creds = {}
    sts_conn = appops_session.client('sts')

    role_arn = "arn:aws:iam::" + account + ":role/" + role
    assumed_role = sts_conn.assume_role(RoleArn=role_arn,
                                        RoleSessionName="TMPROLE")
    sts_creds["aws_access_key_id"] = assumed_role['Credentials']['AccessKeyId']
    sts_creds["aws_secret_access_key"] = assumed_role['Credentials']['SecretAccessKey']
    sts_creds["aws_session_token"] = assumed_role['Credentials']['SessionToken']
    return sts_creds


def aws_conn(service: str, region: str, **kwargs) -> Any:
    """Create a client object."""
    return boto3.client(service, region_name=region, **kwargs)


def dump_sg(client, vpcid: str = "", sgids: List = []) -> List:
    """Dump the specified SG."""
    print(sgids)
    sg_info = client.describe_security_groups(
            Filters = [{'Name': 'group-id', 'Values': sgids}])['SecurityGroups']
    return sg_info


def copy_sg(tgt_client, sgs, vpcid=""):
    for sg in sgs:
        # With no Vpc ID the SG is created in the default VPC.
        resp = tgt_client.create_security_group(
            GroupName=sg['GroupName'], Description=sg['Description'], VpcId=vpcid)
        new_grp_id = resp['GroupId']
        tgt_client.authorize_security_group_ingress(
            GroupId=new_grp_id, IpPermissions=sg.get('IpPermissions', list()))
        if sg.get('IpPermissionsEgress') != []:
            # It doesn't work with an empty list
            tgt_client.authorize_security_group_egress(
                GroupId=new_grp_id, IpPermissions=sg.get('IpPermissionsEgress'))
        print("Create SG {} - \"{}\" - \"{}\" in VPCID: {}".format(new_grp_id, sg['GroupName'], sg['Description'], vpcid))


STS_CRED = aws_sts_cred(SRC_ACCOUNT, ROLE)
STS_CRED_TGT = aws_sts_cred(DST_ACCOUNT, ROLE)

src_client = aws_conn("ec2", region, **STS_CRED)

sg_list = dump_sg(src_client, sgids=sg_list)

tgt_client = aws_conn("ec2", TGT_REGION, **STS_CRED_TGT)

copy_sg(tgt_client, sg_list)