I need the static IP to allow access to a firewalled network not on the AWS network.
Is it possible to get a static IP for a load balanced app using Elastic Beanstalk? I'm following the AWS docs regarding using Route 53 to host my app with a domain name, but from what I've read, this does not ensure a static IP because it is essentially using a CNAME allowing the IP behind the scenes to change. Is that the right understanding? Is it possible at all?
This post helped me get a static IP for outgoing requests by using a NAT Gateway, and routing specific requests through it.
I needed this static IP in order to be whitelisted from an external API provider.
I found this way much easier than the provided by AWS, without the need of creating a new VPC and a private and public subnets.
Basically, what I did was:
Create a new subnet to host the NAT Gateway.
Create the NAT Gateway in the above subnet, and assign a new Elastic IP. This one will be our outgoing IP for hitting external APIs.
Create a route table for the NAT subnet. All outbound traffic (0.0.0.0/0) should be routed through the NAT Gateway. Assign the created subnet to use the new route table.
Modify the main route table (the one that handles all our EC2 instances requests), and add the IP(s) of the external API, setting its target to the NAT Gateway.
This way we can route any request to the external API IPs through the NAT Gateway. All other requests are routed through the default Internet Gateway.
As the posts says, this is not a Multi AZ solution, so if the AZ that holds our NAT Gateway fails, we may lose connection to the external API.
Update:
See #TimObezuk comment to make this a Multi-AZ solution.
Deploy your beanstalk environment in VPC, and with the right configuration, a static IP for outbound traffic is easy.
In this setup, your instances all relay their outbound traffic through a single machine, which you can assign an elastic IP address to. All of the inside-originated, Internet-bound traffic from all of the instances behind it will appear, from the other network, to bw using that single elastic IP.
The RDS portion of the following may be irrelevant to your needs but the principles are all the same.
http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/AWSHowTo-vpc-rds.html
Deploy your beanstalk environment in VPC, and with the right configuration, a static IP for outbound traffic is easy.
In this setup, your instances all relay their outbound traffic through a single machine, which you can assign an elastic IP address to. All of the inside-originated, Internet-bound traffic from all of the instances behind it will appear, from the other network, to bw using that single elastic IP.
The RDS portion of the following may be irrelevant to your needs but the principles are all the same.
http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/AWSHowTo-vpc-rds.html
Related
So I have just setup an application load balancer but I need a static IP to whitelist my database connection, I found Global Accelerator can do the job so I have set it up and assigned it to the ALB. All showing fine in the console but when I ping my domain (www.example.com), I don't see either of the 2 static IP's assigned... and when I whitelist both IP's my application still cannot connect.
Am I doing something wrong?
Edit: My database is Mongo DB hosted on the Atlas Cloud. In my staging environment I have secured the connection to a single server instance using that servers IP address. Now I'm moving to a production environment with a load balancer, I'm not quite sure how I would achieve the same result, since I have multiple EC2 instances which can be created/destroyed via autoscaling. My thinking is that I need to whitelist the load balancer IP address rather than individual instances.
I am assuming that your architecture is:
Domain name pointing to an Application Load Balancer in AWS
Load Balancer points to an Auto Scaling group of Amazon EC2 instances
The EC2 instances point to your MongoDB database hosted on the Atlas Cloud
You want an static IP address so that the database can permit access from the Amazon EC2 instances
While incoming traffic to the EC2 instances goes through the Load Balancer, please note that the connection from an EC2 instance to the database is a separate outbound connection that is established to the database. This traffic does not go through the Load Balancer. The only traffic coming 'out' of a Load Balancer is the response to requests that came 'in'.
The typical way to implement this architecture is:
Load Balancer in public subnets
Auto-Scaled Amazon EC2 instances in private subnets
A NAT Gateway in the public subnet(s)
This way, the instances in the private subnets can access the Internet via the NAT Gateway, yet they are fully isolated from traffic coming in from the Internet. It has the additional benefit that the NAT Gateway has a static IP address. All traffic going through the NAT Gateway to the Internet will 'appear' to be coming from this IP address.
For fault tolerance, it is recommended to put a NAT Gateway in at least two Availability Zones. Each will have its own static IP address.
Oh, and you could consider moving your database to Amazon DocumentDB (with MongoDB Compatibility), which would reduce latency between the application servers and the database.
I have a few elastic beanstalk applications on the same VPC (which can also be reduced to one application), and I'd like them to be accessible both via one IP address (both inbound and outbound traffic), and via their own URL. I've seen that this can be done via NAT, but I haven't found documentation on whether this is all traffic (in both directions) and if it can be done alongside the original endpoints. Another question is whether there is a better way to do this.
NAT is used to provide access to internet for instances in private subnets. In this case all instances in the subnet will have the same external IP. But you won't be able to access your private instances using that IP, it's only for outbound traffic.
In your case I'd go with a ELB. Following the best practices, keep your instances with running applications in private subnets and:
Have an external facing ELB in public subnets (you'll need at least 2 public subnets in different AZs).
Create a Target Group and add your instances with running apps to it.
Assign the Target Group to the listener on your ELB.
Configure the security groups on ELB and app instances to allow the traffic on the port the applications are serving (usually it's 8080).
As a result you'll have your instances accessible by the ELB URL. If you want to have a pretty URL, you can configure it in Route 53 and resolve it to the ELB URL.
Its not possible by using aws provided NAT cluster but can be achieved by hosting a box with both Load balancer and NAT running in the same instance with EIP, map your domain with that IP for incoming traffic, for outgoing traffic in the route table of private app subnet you configure the NAT as target for all the 0.0.0.0/0 route, But it is not the recommended approach since the front facing instance becomes SPOF.
The recommended way is using ELB as a front facing and NAT cluster as outgoing for high HA.
I currently have an elastic beanstalk setup in AWS currently whenever i make API calls it is coming from the EC2 instance's external IP. is there a way to have all servers in that group use the same IP?
Put your EC2 instances in private subnets and direct all outbound traffic through a NAT. This way, all outbound connections appear to come from the NAT's IP address.
See the following for more information. It's a different problem, but the NAT solution is the same.
How do you allocate STATIC addresses to an EBS (beanstalk) within a VPC?
Note, for security, you should follow this architecture anyways. When using ELB, don't have your EC2 instances in a public subnet.
I have several EC2 instances which need to have a white listed IP address to talk with an external service. Is it possible to have these all route through the same Elastic IP when they make external calls using strictly AWS features (not another nginx reverse proxy server)?
I need them to all go through 1 IP so that I can support auto scaling.
Update 12/18/2015:
There is now a managed NAT solution that can be used to solve this problem.
See: https://aws.amazon.com/about-aws/whats-new/2015/12/introducing-amazon-vpc-nat-gateway-a-managed-nat-service/
Original Answer:
You basically need a NAT host and you need to point all traffic that has a destination outside of the VPC to the NAT instance.
Give the NAT instance the whitelisted ip.
Here are the docs:
http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_NAT_Instance.html
I have a set-up running on Amazon cloud with a couple of EC2 Instances running through a load balancer.
It is important that the site has a unique(static) IP or set of IPs as I'm plugging in 3rd party APIs which only accept requests made from IPs which have been added to their whitelist.
So basically unless we can give these 3rd parties a static IP or range of IPs that the requests from the site will always come from then we would be unable to make any calls to them.
Anyone knows how to achieve this as I know that Elastic IPs are not compatible with load balancers?
If I were to look up the IP of the load balancer DNS name (e.g. dualstack.awseb-BAMobile-ENV-xxxxxxxxx.eu-west-1.elb.amazonaws.com resolves to 200.200.200.200) would that IP be Static?
Any help/advise is greatly appreciated guys.
The ip addresses of your load balancer is not static. In any event, your incoming load balancer IP wouldn't be used for outgoing connections.
You could assign elastic IPs to the actual instances behind the load balancer, which would then be used for outgoing requests. You get 5 free elastic ips, and I believe you can apply for more if you need them.
Additionally if using a VPC and if your instances are in a private subnet then they will only be able to access the internet via the NAT instance(s) you setup, and you can of course assign an elastic IP to the NAT instances
This is an old question, but things have changed now.
Now you can create a Network ELB to get a LB with a static IP.
from https://docs.aws.amazon.com/elasticloadbalancing/latest/network/introduction.html
Support for static IP addresses for the load balancer. You can also
assign one Elastic IP address per subnet enabled for the load
balancer.
https://aws.amazon.com/blogs/aws/new-network-load-balancer-effortless-scaling-to-millions-of-requests-per-second/
You can attache an additional ENI (Elastic Network Interface) to an instance in your VPC. This way the ELB (Elastic Load Balancer) routes the incoming Internet requests to the web server, and the additional ENI will be used to connect to your 3rd party (or internal) requests (Management network)
You can see more details about it in the VPC documentations
Really the only way I am aware of doing this is by setting up your instances within a VPC and having dedicated NAT instances by which all outbound traffic is routed.
Here is a link to the AWS documentation on how to set up NAT instances:
http://docs.amazonwebservices.com/AmazonVPC/latest/UserGuide/VPC_NAT_Instance.html
You CAN attach an elastic IP to the instances BUT NOT to the ELB (which is what the client sees).
You could use a full reverse proxy layer 7 load balancer like HAProxy:
Or a commercial implementation like Loadbalancer.org or Riverbed (Zeus)
They both are in the AWS Marketplace:
Your outbound requests to your 3rd party APIs will NOT go out via the ELB/ALB. That's for incoming connections. If you need an inbound static IP you'll probably need to forego the loadbalancer (or figure out how to implement Anshu's suggestion to attach an elastic IP to the loadbalancers, the doc is light on details). Update: I found some documentation that ALB use static addresses (and I just tried binding an elastic IP to one to be sure and that failed).
If you're talking about outbound connections see below:
If your server is deployed in a public subnet you can attach an
elastic IP to that host. Outbound communications will go out over
that address.
If your server is deployed in a private subnet there's
a NAT gateway attached to it. All outbound traffic from your private
subnet will go out over that interface.
You could use as already mentioned loadbalancer.org appliance in AWS. It would replace the AWS NAT instance and give greater functionality and include both Layer4 and Layer7, along with SSL termination and a WAF.
Best of all you get free support in your 30 day trial in AWS to help you get up and running.
Yes I am biased as I work for loadbalancer.org however I would say nothing ventured nothing gained.
You can use a DNS service like DNSMadeeasy that allows "ANAME" records. These act like an A Record but can be pointed at a FQDN or IP. So in this case you can point it to the ELB DNS.
Dave