When creating a Scale Set (VMSS) in Azure, I can choose to include a load balancer with it.
What I don't understand is - how does it work if there's no Load Balancer?
So say my Scale Set has 1 VM, and now, b/c of the scaling rules, another VM is added. If there's no LB or App GW, how should I access this VM? Is there some kind of internal load balancer in the Scale Set itself?
Thanks!
If there's no LB or App GW, how should I access this VM? Is there some
kind of internal load balancer in the Scale Set itself?
For the VM, you only can associate the public IP address to the NIC of it and the NIC is a separate resource. But for the VMSS, there is no separate NIC of it you can associate the public IP address to. If no public IP address, you cannot access both the VM and the VMSS. So you can only access through the load balancer or the Application Gateway.
Maybe you can use a VM with the public IP address as a jump box and access the VMSS from the VM. But it's a little more complex and expensive.
I am having a free tier AWS account, I am adding WAF with my LB(load balancer) having one instance on EC2. Currently, the security group has only HTTP 80 port.
My instance is located on the Asia Pacific (Mumbai) region and when I am creating RULE OR Condition for ACL, I am not getting this region there.
So I have tried to make ACL with the different region and without any rule just configure with the load balancer, After creating ACL when I go for Associate the load balancer with ACL, So there is no load balancer shown in the drop down like below:
please help me, Where can be mistake done by me ?
AWS WAF is not supported yet in the Mumbia region, so if your instance and load balancer is in Mumbai you won't be able to use WAF directly:
https://aws.amazon.com/about-aws/global-infrastructure/regional-product-services/
You also can't put your WAF in a different region and connect it to your ALB, that won't work either as you have seen.
The only other option is for you to make use of a Cloudfront distribution in front of your load balancer, and your WAF is then linked to your Cloudfront distribution.
I want to load-balance my VM scale set in a VNet. My requirements are that:
I do not want public IP accessibility and
I do need https health probes.
While both Azure load balancers (in either basic or standard sku) seem to be capable of balancing also internal traffic, only the standard sku offers https health probes.
When trying to add the VM scale set to the backend pool, I cannot select it, it's not found by the wizard. Both scale set and internal standard sku load balancer are within the same region, VNet, and resource group.
It appears I'm having the same issue as someone here, only with a scale set instead of an availability set.
There is a tooltip stating
Only VMs in region with standard SKU public or no public IP can be
attached to this loadbalancer. A backend pool can only contain
resources from one virtual network. Create a new backend pool to add
resources from a different virtual network.
So I am confused, my internal load balancer is using only private addresses, so the criterion of "with standard SKU public or no public IP" should be met. Also I note, that the tooltip does only explicitly state VMs, not VM scale set. However, I refuse to believe that the standard sku of LB should lacking features compared to the basic sku (I do have it working with a scale set and internal basic LB, albeit without https health probes).
Am I missing something here? I do realise that there's still the "Azure Application Gateway", however I think it's overly complex to set-up and overkill for my scenario. I only want internal load balancing of a scale set with https health probes. And I am starting to think that this is not possible.
Kind regards, baouss
It seems a restriction that you could not select the scale set as the backend for a standard SKU load balancer on the Azure portal. The document states that
One key aspect is the scope of the virtual network for the resource.
While Basic Load Balancer exists within the scope of an availability
set, a Standard Load Balancer is fully integrated with the scope of a
virtual network and all virtual network concepts apply.
So we only could select the eligible VMs in the virtual network as the backend pool for a Standard Load Balancer.
Wait for confirmation from Azure team: VM scale set does not work with internal standard SKU Azure load balancer backend pool
As you mentioned, currently, you could use Application Gateway with health probe Https. If not, you may create a VM scale set and choose a load balancing option--- load balancer. This will automatically associate a public standard SKU load balancer for your scale set.
our app is hosted in Azure VM scale set and it has 80 and 8080 endpoints,
80 must be public and 8080 must be private.
Obvious way to achieve this is to use one public and one private load balancer.
Is it possible in Azure VM scale set?
According to this it is.
https://heranonazure.wordpress.com/2017/08/30/vmss-behind-both-internal-and-external-load-balancer/
However, I have attached my VMSS to 2 load balancers, 1 internal and 1 external. It does work just fine, but you do get a warning saying that 1 backend address pool has been removed....however I can still access resources via both load balancers. Whether this persists after any maintenance or scaling of the VMSS remains to be seen.
I would say on the Basic SKU LoadBalancer it is NOT supported even though you can get it to work to some degree.
The Standard load balancer may well be different, however that is still in preview.
How do we enable HTTPS in Amazon EC2? Our site is working on HTTP.
First, you need to open HTTPS port (443). To do that, you go to https://console.aws.amazon.com/ec2/ and click on the Security Groups link on the left, then create a new security group with also HTTPS available.
Then, just update the security group of a running instance or create a new instance using that group.
After these steps, your EC2 work is finished, and it's all an application problem.
This answer is focused to someone that buy a domain in another site (as GoDaddy) and want to use the Amazon free certificate with Certificate Manager
This answer uses Amazon Classic Load Balancer (paid) see the pricing before using it
Step 1 - Request a certificate with Certificate Manager
Go to Certificate Manager > Request Certificate > Request a public certificate
On Domain name you will add myprojectdomainname.com and *.myprojectdomainname.com and go on Next
Chose Email validation and Confirm and Request
Open the email that you have received (on the email account that you have buyed the domain) and aprove the request
After this, check if the validation status of myprojectdomainname.com and *.myprojectdomainname.com is sucess, if is sucess you can continue to Step 2
Step 2 - Create a Security Group to a Load Balancer
On EC2 go to Security Groups > and Create a Security Group and add the http and https inbound
It will be something like:
Step 3 - Create the Load Balancer
EC2 > Load Balancer > Create Load Balancer > Classic Load Balancer (Third option)
Create LB inside - the vpc of your project
On Load Balancer Protocol add Http and Https
Next > Select exiting security group
Choose the security group that you have create in the previous step
Next > Choose certificate from ACM
Select the certificate of the step 1
Next >
on Health check i've used the ping path / (one slash instead of /index.html)
Step 4 - Associate your instance with the security group of load balancer
EC2 > Instances > click on your project > Actions > Networking > Change Security Groups
Add the Security Group of your Load Balancer
Step 5
EC2 > Load Balancer > Click on the load balancer that you have created > copy the DNS Name (A Record), it will be something like myproject-2021611191.us-east-1.elb.amazonaws.com
Go to Route 53 > Routes Zones > click on the domain name > Go to Records Sets
(If you are don't have your domain here, create a hosted zone with Domain Name: myprojectdomainname.com and Type: Public Hosted Zone)
Check if you have a record type A (probably not), create/edit record set with name empty, type A, alias Yes and Target the dns that you have copied
Create also a new Record Set of type A, name *.myprojectdomainname.com, alias Yes and Target your domain (myprojectdomainname.com). This will make possible access your site with www.myprojectdomainname.com and subsite.myprojectdomainname.com. Note: You will need to configure your reverse proxy (Nginx/Apache) to do so.
On NS copy the 4 Name Servers values to use on the next Step, it will be something like:
ns-362.awsdns-45.com
ns-1558.awsdns-02.co.uk
ns-737.awsdns-28.net
ns-1522.awsdns-62.org
Go to EC2 > Instances > And copy the IPv4 Public IP too
Step 6
On the domain register site that you have buyed the domain (in my case GoDaddy)
Change the routing to http : <Your IPv4 Public IP Number> and select Forward with masking
Change the Name Servers (NS) to the 4 NS that you have copied, this can take 48 hours to make effect
Amazon EC2 instances are just virtual machines so you would setup SSL the same way you would set it up on any server.
You don't mention what platform you are on, so it difficult to give any more information.
An old question but worth mentioning another option in the answers.
In case the DNS system of your domain has been defined in Amazon Route 53, you can use Amazon CloudFront service in front of your EC2 and attach a free Amazon SSL certificate to it. This way you will benefit from both having a CDN for a faster content delivery and also securing you domain with HTTPS protocol.
You can also use Amazon API Gateway. Put your application behind API Gateway. Please check this FAQ
There must be also an answer for people who want a hassle free https on ec2 for mainly demo and testing purposes, one way they can achieve that very fast is:
With my answer here which describes How you can achieve https for testing purposes in minutes with EC2 without the hassle of creating certificates
One of the best resources I found was using let's encrypt, you do not need ELB nor cloudfront for your EC2 instance to have HTTPS, just follow the following simple instructions:
let's encrypt
Login to your server and follow the steps in the link.
It is also important as mentioned by others that you have port 443 opened by editing your security groups
You can view your certificate or any other website's by changing the site name in this link
Please do not forget that it is only valid for 90 days
Use Elastic Load Balacing, it supports SSL termination at the Load Balancer, including offloading SSL decryption from application instances and providing centralized management of SSL certificates.
You need to register a domain(on GoDaddy for example) and put a load balancer in front of your ec2 instance - as DigaoParceiro said in his answer.
The issue is that domains generated by amazon on your ec2 instances are ephemeral. Today the domain is belonging to you, tomorrow it may not.
For that reason, let's encrypt throws an error when you try to register a certificate on amazon generated domain that states:
The ACME server refuses to issue a certificate for this domain name, because it is forbidden by policy
More details about this here:
https://community.letsencrypt.org/t/policy-forbids-issuing-for-name-on-amazon-ec2-domain/12692/4
You need to create a security group for HTTPS and assign it to your webserver:
Open the Amazon EC2 console.
Choose Security Groups in the navigation pane.
Choose Create Security Group.
For Create Security Group, do the following:
For the Security group name, type a name for the security group that you are creating.
(Optional) Type a description of the security group that you are creating.
For VPC, choose the VPC that contains your web server Amazon EC2 instance.
Choose Add Rule. For Type, choose HTTPS.
Choose Create.
In the navigation pane, choose Instances.
Select the check box next to your web server instance. Then choose Actions, Networking, and Change Security Groups.
Select the check box next to the security group that you created for HTTPS. Then choose Assign Security Groups.
To verify SSL/TLS offload with a web browser
Use a web browser to connect to your web server using the public DNS name or IP address of the server.
Ensure that the URL in the address bar begins with https://.
For example, https://ec2-52-14-212-67.us-east-2.compute.amazonaws.com/.