I have configure my VM in such a way that I have 2 application running on one VM.
First App listen on ip:80 port
Second App listen on ip:8080 port
I have enabled ports on VM instances group like this.
I have my Load Balancer configured with two front rules like this.
I want to map ip1:80 to my 80 port application and ip2:8080 to 8080 application
when I tried accessing my application using load balancers IP address it always show me 8080 port application.
I have two backend service running
help me here google team. I m newb
If you want to use IP addresses but not URLs/Domain(s) to reach to your web applications, then URL Maps cannot help to implement your design, as URL map forwards the request to the correct backend service using host values (example.com) and path values (/path) in the destination URL.
That being said, you can add one more Target Proxy to your LB resources to route incoming requests directly to the desired backend services. This will allow you to keep your minimum number of instances as one VM.
For more information, visit this article.
I had similar problem and I had to add second backend.
So I have two backends: one for 80 port, other for 8080. And I have on managed group.
Related
I've an application up and running on and EC2 instance at port 5000. I've been trying to add either application load balancer or classic load balancer to route my traffic to this application.
Until at this point, the application is available over HTTP protocol at http://example.com:5000/.
So my question is, what steps I need to do to make this application available without typing the port number in the URL.
Please note that I want to have multiple instances of the app up and running at different ports and are mapped to different subdomains.
Thanks
So after spending couple of hours and going through the documentation again, this is how it worked for me.
Created an Application load balancer
Created a Target Group that listens on HTTP port 80.
In this target group, selected the ec2 instance and registered it on port 5000
In the load balancer section, added two listeners. One for HTTP and one for HTTPs. Added default action to forward all traffic to that Target Group that was created in step 2. and it all worked for me.
The important bit was to set up the Target Group in step 2 and 3 correctly. I was creating two target groups for http and https separately which was incorrect. I just had to creat one target group for http only.
I am confused about configuring the EC2 security group settings.
There are three options (TCP, SSH, HTTPS) and each of them requires you to add an IP/port number.
For context, in my work I'm usually running Flask apps over EC2 and I only want particular people to view them. My question is understanding the difference between TCP, SSH, and HTTPs but more importantly which of these are important for me to configure.
Within the EC2 Console, under Security Groups:
SSH and HTTPS in the Type dropdown, are presets which set the port to 22 and 443 respectively.
TCP is the protocol. Both SSH and HTTPS are TCP.
If you're running a server which you want to expose on a non standard port, you can select Custom TCP Rule, then set the port acordingly.
You should probably have one security group that allows SSH traffic, then assign this security group to the EC2 instances you wish to shell into:
Then have a separate security group that allows the webserver traffic, in this case I also have one for port 80, aswell as 443:
Of course you will then need a server running on that EC2 instance to receive the traffic. This might be a reverse proxy like nginx, which then proxies traffic to the correct port for your app server (run your flask app with something like gunicorn in production).
If nginx and gunicorn are running on the same box, and say gunicorn serves on port 8000, then you wouldn't need a security group for this as it's loopback traffic. Your nginx configuration points to port 8000.
However if you have a separate EC2 instance running gunicorn, you might wish to set up a secuirty group for this to allow internal traffic from your VPC CIDR range:
I only want particular people to view them
This is probably a job for authentication on the app, as oppose to security groups, unless your certain of the public IPs from which you wish people to connect.
In the above examples above a Source of 0.0.0.0/0 is allowing traffic from anywhere to reach that port. The console has a convenient dropdown which lets you set My IP if you only want to allow traffic from the IP you're using to connect to the console. Otherwise you'd need to manually calculate the CIDR blocks.
Hope this helps. It probably raises more questions.
Https/Http are important for you. Both are used with websites. Https is http over SSL, meaning more secure than http. You just need these.
Http/https uses TCP port 80 and 443 by default.
SSH is used to securely access a Unix based server.
Three of Node.js web server are all listing on port 3000, how can I set port configuration(backend and frontend) for load balancer?
I set backend port 3000, frontend 80, but it's not working. I tried to use iptable to redirect 80 to 3000 in the instance, it didn't work. How can I set the load balancer ports?
Did you set url_map to direct traffic to different backend services?
You mentioned that there were three web servers, were they served as an identical service? If not, you need to define them separately. One backend service for one web server. For example, set webserver A as backend service A, and webserver B as backend service B ... etc.
You could define port for each backend service, which is about which port you would like the traffic to be directed from instance group to each instance.
Simply speaking, if three web servers are all different, you need to...
Define three ports for three web servers on the instance group
Set corresponding firewall-rules to open required ports on each instance
Run your web server on each instance on specified ports
map the traffic to correct backend server with url-map
default front end with 80 port should work okay, if needed, you could build a 443 front end to provide HTTPS with automatically renewed SSL by Google
Above mentioned steps you could easily find on Google Cloud Console.
If you would like to know how each component on GCP LB in detail, you could refer to this article
- you could only read the concept of how instance and instance group and backend service connect from each other.
I have en ELB with multiple EC2 instances registered in target groups. I am using port a php application which is running properly. It has SSL.
I want to use port 8000 for my node application. What I would like to do is I want to forward my-elb-address:8000 to any-ec2-ip:8000. So when i access the domain attached to ELB witjh port 8000 it would forward that to ec2 with port 8000. How can I accomplish this? Is their any other way of ELB listening and forwarding multiple ports?
I have added listener for port 80,443 and 8000 in my ELB. Please help
Classic ELB
Using the "classic" ELB you can define custom rules for forwarding the ports in the AWS dashboard:
Mind that the requests will be forwarded to all the available instances, which means in the example above (supposing php is running on the 80, node.js on the 8000) all the instances must have both the services running. If the services are instead on different instances you will need two different load balancers, one per port.
Application ELB
Another option is to use an "application" ELB (ALB).
This option will allow to have single load balancer with fine-grained rules that will allow, for each protocol, to forward the request to a set of instances.
create a "default" ALB
add a new target group (see entry under the Load Balancing section in the sidebar) listening on your custom port
register the instances running your node.js application (right click on the target group)
bind the target group to the listeners of your ALB
Another solution could be, specifying path-based rules, to use only one port (443) and forward only the requests under /to_nodejs to the port 8000.
Under Load Balancer,
I have two domains
www.xyz.com
search.xyz.com
and on Google cloud (one of the VM), I have apache running on port 80, and nodejs running on 8080.
I want to create two backends to the same group with different ports (one of them to apache and on of them to nodejs),
if host name matches forward to different backend
for eg.
www.xyz.com should goto backend host port 80
search.xyz.com should goto backend host port 8080
I tried added backends in console, however it keeps overwriting other.
I had the same issue and solved it by using different port names for the service.
This issue is described in detail in the Load Balancer documentation, under Restrictions and guidance for instance groups:
If your instance group serves two or more ports for several backends respectively, you have to specify different port names in the instance group.
It's easy to overlook, but when you create a backend service, you're asked to name the port. The good news is that you can rename the port easily.