我已设法启动,停止并检查以前从JAVA API创建的EC2实例的状态.但是,我很难获得此实例的公共DNS地址.由于我使用StartInstancesRequest启动实例并使用StartInstancesResponse获取响应,因此无法检索实际的Instance对象.我的起始代码如下,它有效：
BasicAWSCredentials oAWSCredentials = new BasicAWSCredentials(sAccessKey,sSecretKey);
AmazonEC2 ec2 = new AmazonEC2Client(oAWSCredentials);
ec2.setEndpoint("https://eu-west-1.ec2.amazonaws.com");
List<String> instanceIDs = new ArrayList<String>();
instanceIDs.add("i-XXXXXXX");
StartInstancesRequest startInstancesRequest = new StartInstancesRequest(instanceIDs);
try {
StartInstancesResult response = ec2.startInstances(startInstancesRequest);
System.out.println("Sent! "+response.toString());
}catch (AmazonServiceException ex){
System.out.println(ex.toString());
return false;
}catch(AmazonClientException ex){
System.out.println(ex.toString());
return false;
}
除了通过JSch连接到这个实例的任何帮助,将不胜感激.
非常感谢！
解决方法
这是一种可以解决问题的方法.在调用之前,最好检查实例是否处于运行状态.
String getInstancePublicDnsName(String instanceId) {
DescribeInstancesResult describeInstancesRequest = ec2.describeInstances();
List<Reservation> reservations = describeInstancesRequest.getReservations();
Set<Instance> allInstances = new HashSet<Instance>();
for (Reservation reservation : reservations) {
for (Instance instance : reservation.getInstances()) {
if (instance.getInstanceId().equals(instanceId))
return instance.getPublicDnsName();
}
}
return null;
}
