通过 web GUI 执行这个任务是一个令人畏缩的任务,所以我指望使用 AWS CLI 使这个任务变得更容易。我在 StackOverflow 找到了一个如何做到这一点的开始,但它还远远没有完成。所以我决定自己写剧本。我使用了 AWS CLI、 MySQL 和一些“ Bash-foo”来执行以下操作:
获取所有 EC2安全组的列表。
I store the group-id, group-name and description in a tabled called “groups” in a MySQL database called aws_security_groups on the localhost. The total number of groups found is reported to the user.
备注:
1. You will want to create a file to store your MySQL host, username and password and point the $DBCONFIG variable to it. It should be structured like this:
#!/bin/bash
# Initialize Variables
DBCONFIG="--defaults-file=mysql-defaults.cnf"
DB="aws_security_groups"
SGLOOP=0
EC2LOOP=0
ELBLOOP=0
RDSLOOP=0
DEFAULTLOOP=0
OPSLOOP=0
CACHELOOP=0
DEL_GROUP=""
# Function to report back # of rows
function Rows {
ROWS=`echo "select count(*) from groups" | mysql $DBCONFIG --skip-column-names $DB`
# echo -e "Excluding $1 Security Groups.\nGroups Left to audit: "$ROWS
echo -e $ROWS" groups left after Excluding $1 Security Groups."
}
# Empty the table
echo -e "delete from groups where groupid is not null" | mysql $DBCONFIG $DB
# Get all Security Groups
aws ec2 describe-security-groups --query "SecurityGroups[*].[GroupId,GroupName,Description]" --output text > /tmp/security_group_audit.txt
while IFS=$'\t' read -r -a myArray
do
if [ $SGLOOP -eq 0 ];
then
VALUES="(\""${myArray[0]}"\",\""${myArray[1]}"\",\""${myArray[2]}"\")"
else
VALUES=$VALUES",(\""${myArray[0]}"\",\""${myArray[1]}"\",\""${myArray[2]}"\")"
fi
let SGLOOP="$SGLOOP + 1"
done < /tmp/security_group_audit.txt
echo -e "insert into groups (groupid, groupname, description) values $VALUES" | mysql $DBCONFIG $DB
echo -e $SGLOOP" security groups total."
# Exclude Security Groups assigned to Instances
for groupId in `aws ec2 describe-instances --output json | jq -r ".Reservations[].Instances[].SecurityGroups[].GroupId" | sort | uniq`
do
if [ $EC2LOOP -eq 0 ];
then
DEL_GROUP="'$groupId'"
else
DEL_GROUP=$DEL_GROUP",'$groupId'"
fi
let EC2LOOP="$EC2LOOP + 1"
done
echo -e "delete from groups where groupid in ($DEL_GROUP)" | mysql $DBCONFIG $DB
Rows "EC2 Instance"
DEL_GROUP=""
# Exclude groups assigned to Elastic Load Balancers
for elbGroupId in `aws elb describe-load-balancers --output json | jq -c -r ".LoadBalancerDescriptions[].SecurityGroups" | tr -d "\"[]\"" | sort | uniq`
do
if [ $ELBLOOP -eq 0 ];
then
DEL_GROUP="'$elbGroupId'"
else
DEL_GROUP=$DEL_GROUP",'$elbGroupId'"
fi
let ELBLOOP="$ELBLOOP + 1"
done
echo -e "delete from groups where groupid in ($DEL_GROUP)" | mysql $DBCONFIG $DB
Rows "Elastic Load Balancer"
DEL_GROUP=""
# Exclude groups assigned to RDS
for RdsGroupId in `aws rds describe-db-instances --output json | jq -c -r ".DBInstances[].VpcSecurityGroups[].VpcSecurityGroupId" | sort | uniq`
do
if [ $RDSLOOP -eq 0 ];
then
DEL_GROUP="'$RdsGroupId'"
else
DEL_GROUP=$DEL_GROUP",'$RdsGroupId'"
fi
let RDSLOOP="$RDSLOOP + 1"
done
echo -e "delete from groups where groupid in ($DEL_GROUP)" | mysql $DBCONFIG $DB
Rows "RDS Instances"
DEL_GROUP=""
# Exclude groups assigned to OpsWorks
for OpsGroupId in `echo -e "select groupid from groups where groupname like \"AWS-OpsWorks%\"" | mysql $DBCONFIG $DB`
do
if [ $OPSLOOP -eq 0 ];
then
DEL_GROUP="'$OpsGroupId'"
else
DEL_GROUP=$DEL_GROUP",'$OpsGroupId'"
fi
let OPSLOOP="$OPSLOOP + 1"
done
echo -e "delete from groups where groupid in ($DEL_GROUP)" | mysql $DBCONFIG $DB
Rows "OpsWorks"
DEL_GROUP=""
# Exclude default groups (can't be deleted)
for DefaultGroupId in `echo -e "select groupid from groups where groupname like \"default%\"" | mysql $DBCONFIG $DB`
do
if [ $DEFAULTLOOP -eq 0 ];
then
DEL_GROUP="'$DefaultGroupId'"
else
DEL_GROUP=$DEL_GROUP",'$DefaultGroupId'"
fi
let DEFAULTLOOP="$DEFAULTLOOP + 1"
done
echo -e "delete from groups where groupid in ($DEL_GROUP)" | mysql $DBCONFIG $DB
Rows "Default"
DEL_GROUP=""
# Exclude Elasticache groups
for CacheGroupId in `aws elasticache describe-cache-clusters --output json | jq -r ".CacheClusters[].SecurityGroups[].SecurityGroupId" | sort | uniq`
do
if [ $CACHELOOP -eq 0 ];
then
DEL_GROUP="'$CacheGroupId'"
else
DEL_GROUP=$DEL_GROUP",'$CacheGroupId'"
fi
let CACHELOOP="$CACHELOOP + 1"
done
echo -e "delete from groups where groupid in ($DEL_GROUP)" | mysql $DBCONFIG $DB
Rows "ElastiCache"
# Display Security Groups left to audit / delete
echo "select * from groups order by groupid" | mysql $DBCONFIG $DB | sed 's/groupid\t/groupid\t\t/'
这是创建数据库的 sql。
-- MySQL dump 10.13 Distrib 5.5.41, for debian-linux-gnu (x86_64)
--
-- Host: localhost Database: aws_security_groups
-- ------------------------------------------------------
-- Server version 5.5.40-log
/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;
/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;
/*!40103 SET TIME_ZONE='+00:00' */;
/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;
--
-- Table structure for table `groups`
--
DROP TABLE IF EXISTS `groups`;
/*!40101 SET @saved_cs_client = @@character_set_client */;
/*!40101 SET character_set_client = utf8 */;
CREATE TABLE `groups` (
`groupid` varchar(12) DEFAULT NULL,
`groupname` varchar(200) DEFAULT NULL,
`description` varchar(200) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
/*!40101 SET character_set_client = @saved_cs_client */;
--
-- Dumping data for table `groups`
--
LOCK TABLES `groups` WRITE;
/*!40000 ALTER TABLE `groups` DISABLE KEYS */;
/*!40000 ALTER TABLE `groups` ENABLE KEYS */;
UNLOCK TABLES;
/*!40103 SET TIME_ZONE=@OLD_TIME_ZONE */;
/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;
-- Dump completed on 2015-01-27 16:07:44
不幸的是,所选择的答案并不像我需要的那样准确(我试图调查原因,但我更愿意实现它)。
If I check ALL NetworkInterfaces, looking for attachments to any SecurityGroup, It gets me partial results. If I check only on EC2Instances, it gets me back partial results as well.
all_secgrp = list(ec2_connector.security_groups.all())
all_instances = ec2_connector.instances.all()
for single_instance in all_instances:
instance_secgrp = ec2_connector.Instance(single_instance.id).security_groups
for single_sec_grp in instance_secgrp:
if ec2.SecurityGroup(id=single_sec_grp['GroupId']) in all_secgrp:
all_secgrp.remove(ec2.SecurityGroup(id=single_sec_grp['GroupId']))
all_secgrp_detached_tmp = all_secgrp[:]
for single_secgrp in all_secgrp_detached_tmp:
try:
print(single_secgrp.id)
if len(list(ec2_connector.network_interfaces.filter(Filters=[{'Name': 'group-id', 'Values': [single_secgrp.id]}]))) > 0:
all_secgrp.remove(single_secgrp)
except Exception:
all_secgrp.remove(single_secgrp)
return all_secgrp_detached
# pull all security groups from all vpcs in the given profile and region and save as a set
all_sgs = {sg['GroupId'] for sg in client.describe_security_groups()['SecurityGroups']}
# create a new set for all of the security groups that are currently in use
in_use = set()
# cycle through the ENIs and add all found security groups to the in_use set
for eni in client.describe_network_interfaces()['NetworkInterfaces']:
for group in eni['Groups']:
in_use.add(group['GroupId'])
unused_security_groups = all_sgs - in_use
for security_group in unused_security_groups:
try:
response = client.delete_security_group(GroupId=security_group)
except ClientError as e:
if e.response['Error']['Code'] == 'DependencyViolation':
print('EC2/Security Group Dependencies Exist')
else:
print('Unexpected error: {}'.format(e))
我也在找同样的信息。
How to find all security groups that are not attached to any resource? And I found this:
使用 AWS 配置规则“ EC2 _ SECURITY _ GROUP _ ATTACHED _ TO _ ENI”,我得到了一个检查列表,检查非默认安全组是否附加到 Amazon EC2(EC2)实例或弹性网络接口(ENI)。如果安全组与 EC2实例或 ENI 没有关联,则该规则返回 NON _ COMPLIANT。