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Thursday, December 8, 2016

Script to create the Security groups in AWS

You can use the AWS Console to create the Security groups for your servers. But if you are having large number of servers with different security group or you are involved in the migration of your environment than it can take lot of time and effort to do that manually.

In those cases you can use the following AWS Scripts which uses the AWS CLI to create the Security Groups

You need to provide the following arguments to the script for creating the Security groups

  1. Name of the Security group
  2. VpcID
  3. Environment Name
  4. Meaningful name for the Security group Usage
  5. Description about the Security Group

 #!/bin/bash  
 #  
 # Create Security Group in the AWS 
 # Need to provide the Security group name , VpcID, Environment name, Usedfor and description
 name=$1;  
 vpcId=$2;  
 environment=$3;  
 usedFor=$4  
 description=$5;  
 # We need to provide the name of the Environment and  
 # action to perform  
 #  
 usage(){  
     echo -e "Usage:\n";  
     echo -e "$0 <Name> <vpc_id> <TAG:Environment> <TAG:UsedFor> <TAG:Description> \n";  
     exit 0;  
 }  
 # Two inputs required to execute the script  
 if [ $# -ne 5 ];  
 then  
     usage;  
 fi;  
 #Create Subnet  
 groupId=`aws ec2 create-security-group --vpc-id $vpcId --group-name $name --description "$description" --query 'GroupId' --output text`;  
 if [[ $groupId == "" ]];  
 then  
     echo -e"Failed to create group";  
     exit 0;  
 fi;  
 echo -e "Group ID: $groupId";  
 echo "$name  $groupId" >> sg_lb_list.txt  
 #Assign TAGs  
 aws ec2 create-tags --resources $groupId --tags Key=Name,Value=$name Key=Environment,Value=$environment Key=UsedFor,Value=$usedFor Key=Description,Value="$description";  
 exit 1;  

Example

 ./create_security_group.sh Dev-SG-LB-App-Appserver vpc-2582cag7 Development Appname-ApplicationServer "Security Group for Appname Application Server";  


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