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README.md
To create an EC2 instance programatically
The AWS SDK(Software Development Kit) provides an API for Amazon Web Services. Using the SDK, you can easily build applications that work with AWS services.
AWS SDK for Java
1. Create an AWS account
Create a user and get an access key Store it in ~/.aws/credentials
[default]
aws_access_key_id = [ID]
aws_secret_access_key = [KEY]
Set up ~/.aws/config
[default]
region = us-east-1
2. Set up a suitable Java Development Environment and set the environment path 3. Install Maven
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Apache Maven is the most popular build and dependency resolution tool for Java like Npm and Pip To test the Maven installation mvn -v
4. Build a Java project with Maven
$ mvn archetype:generate
-DgroupId=[package-name]
-DartifactId=[project-name]
-DarchetypeArtifactId=maven-archetype-quickstart
-DinteractiveMode=false
5. Define a Maven build in pom.xml
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… …
7. Write code
Create a security group
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Optinially set up ingress rules Create a key pair
Create an instance with the security group and the key pair attached to it
8. Example code
import com.amazonaws.services.ec2.AmazonEC2;
import com.amazonaws.services.ec2.AmazonEC2ClientBuilder;
import com.amazonaws.services.ec2.model.CreateSecurityGroupRequest;
import com.amazonaws.services.ec2.model.CreateSecurityGroupResult;
import com.amazonaws.services.ec2.model.AuthorizeSecurityGroupIngressRequest;
import com.amazonaws.services.ec2.model.AuthorizeSecurityGroupIngressResult;
import com.amazonaws.services.ec2.model.IpPermission;
import com.amazonaws.services.ec2.model.IpRange;
import com.amazonaws.services.ec2.model.CreateKeyPairRequest;
import com.amazonaws.services.ec2.model.CreateKeyPairResult;
import com.amazonaws.services.ec2.model.InstanceType;
import com.amazonaws.services.ec2.model.RunInstancesRequest;
import com.amazonaws.services.ec2.model.RunInstancesResult;
import com.amazonaws.services.ec2.model.Tag;
import com.amazonaws.services.ec2.model.CreateTagsRequest;
import com.amazonaws.services.ec2.model.CreateTagsResult;
import java.util.List;
public static void main( String[] args ) {
String sgName = “securityGroupForDemo”;
String sgDesc = “This is a security group for demo”;
String keyName = “COMS-6998-demo-key”;
String instanceName = “COMS-6998-demo-instance”;
String amiId = “ami-06b263d6ceff0b3dd”; // Ubuntu 18.04 LTS
int minInstance = 1;
int maxInstance = 1;
createSecurityGroup(sgName, sgDesc);
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}
createKeyPair(keyName);
createInstance(instanceName, amiId, sgName, keyName, minInstance, maxInstance);
public static void createSecurityGroup(String groupName, String desc) {
final AmazonEC2 ec2 = AmazonEC2ClientBuilder.defaultClient();
CreateSecurityGroupRequest createRequest = new CreateSecurityGroupRequest()
}
.withGroupName(groupName)
.withDescription(desc);
CreateSecurityGroupResult createResponse = ec2.createSecurityGroup(createRequest);
public static void createKeyPair(String keyName) {
final AmazonEC2 ec2 = AmazonEC2ClientBuilder.defaultClient();
CreateKeyPairRequest request = new CreateKeyPairRequest().withKeyName(keyName);
CreateKeyPairResult response = ec2.createKeyPair(request);
}
public static void createInstance(String name, String amiId, String sgName, String keyName, int min, int max) {
final AmazonEC2 ec2 = AmazonEC2ClientBuilder.defaultClient();
RunInstancesRequest runRequest = new RunInstancesRequest()
.withImageId(amiId)
.withInstanceType(InstanceType.T1Micro)
.withMaxCount(min)
.withMinCount(max)
.withKeyName(keyName)
.withSecurityGroups(sgName);
RunInstancesResult runResponse = ec2.runInstances(runRequest);
String reservationId = runResponse.getReservation().getInstances().get(0).getInstanceId();
Tag tag = new Tag()
.withKey(“Name”)
.withValue(name);
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}
CreateTagsRequest tagRequest = new CreateTagsRequest()
.withResources(reservationId)
.withTags(tag);
CreateTagsResult tagResponse = ec2.createTags(tagRequest);
System.out.printf(“EC2 instance %s started based on AMI %s\n”, reservationId, amiId);
AWS SDK for Python
1. Create an AWS account
Create a user and get an access key Store it in ~/.aws/credentials
[default]
aws_access_key_id = [ID]
aws_secret_access_key = [KEY]
Set up ~/.aws/config [default]
region = us-east-1
2. Install boto3
$ pip install boto3
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3. Write code
Create a security group
Optinially set up ingress rules
Create a key pair
Create an instance with the security group and the key pair attached to it
4. Example code
import boto3
def createSG(sgName,sgDesc):
ec2 = boto3.client(‘ec2’)
res = ec2.create_security_group (
GroupName = sgName,
Description = sgDesc
)
def createKeyPair(name):
ec2 = boto3.resource(‘ec2’)
res = ec2.create_key_pair(KeyName = name)
def createEC2(amiId, keyName, sgName, instType = ‘t1.micro’, minInst = 1, maxInst = 1):
ec2 = boto3.resource(‘ec2’)
instances = ec2.create_instances (
ImageId = amiId,
MinCount = minInst,
MaxCount = maxInst,
InstanceType = instType,
KeyName = keyName,
SecurityGroups=[sgName]
)
if __name__ == ‘__main__’:
sgName = ‘securityGroupForDemo’
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sgDesc = ‘This is a security group for demo’
keyName = ‘COMS-6998-demo-key’
amiId = ‘ami-06b263d6ceff0b3dd’
createSG(sgName, sgDesc)
createKeyPair(keyName)
createEC2(amiId, keyName, sgName)
print(‘Done’)