I would like to use Azure Container Instances behind a gateway (HTTP) to avoid an idle infrastructure when there is no traffic.
Something which looks like this.
There is something like that available in Azure ? (like API Gateway in AWS)
Best
There is an Azure template that integrates Application Gateway with Container Instances here. In the example ACIs are deployed in a VNET and the Applications Gateway serves as entry point to the APIs.
You can probably accommodate that templates to fit your requirements.
Step by step:
Upload your images to Container Registry
Create two separate container instances.
Image Type: Private
Fill all required fields, be sure to include the container registry hos name in the image name (the container name can be anything)
Expose your ports in the networking tab
Add a dns name label. Why? Ip can change, see this docs.
Add your env variables if any
It should create them without any problem. Try to access to the dns provided and check if the sites are running properly.
Create new Application Gateway
Fill all required fields (name, tier, whatever...). Use Tier Standard V2.
Public frontend, create new IP address if needed.
Add two bakend pools, use IP or Hostname and provide the dns created in step 2 for each ACI
Add a route: Listener Type: Basic. In Backend targets fill with target type = backend pool, select one of your backend pools and create a new http setting. Literraly fill it with whatever values you want, I coulnd't get this to work in the first page, ever, so I always edit it later.
Add yout tags
Hit create
When it finishes go to your newly created appGateway and search for HTTP Settings.
These are the connection parameters that the appGW uses to connect to your backend, if your backends listens in the same port, the same path and so on you can reuse the HTTP Setting, if it doesn't create 2.
Go to rules and create a path-based rule.
Check your only listener, the default backend and the setting associated with it.
Add a path to your second backend name=endpoint2;paths=_/endpoint2/*_BackendPool=backend2;HTTPSetting=backend2HTTPSetting
And that's it!
Related
Currently we own an application (App-A) which is hosted on Service Fabric cluster using VMSS instances. The VMSS instance has a public IP which points to App-A to route customer traffic. I want to add a new application (App-B) to the same service fabric cluster. How can I use the same VMSS instance to route customer traffic between App-A and App-B?
You can deploy AppB to listen on a different HTTP / HTTPS, that way the applications can run side by side on the same VM instance.
https://learn.microsoft.com/en-us/azure/service-fabric/service-fabric-service-manifest-resources
You can use the built-in reverse proxy for this, or a more hardened product like Traefik.
A reverse proxy can look at the requested URL path, querystring parameters or headers, and route the request based on pre-defined rules.
E.g. /svc1/ goes to service 1 and /svc2/ goes to service 2.
I'm trying to secure my containerized web app with a Premium V2 App Service Plan. I've enabled Service Endpoints for an integration subnet for the different App Services to restrict incoming traffic from each other except for the frontend (so all of them are integrated with the VNet and all have incoming traffic restricted to that VNet except for the frontend).
I have also other Azure services like Azure Functions or a Storage Account that can have inbound traffic restricted by using those Service Endpoints. However, One of the App Services calls an external 3rd party API that lies on Azure too. That API may or not be behind a static IP. However, it has a Custom Domain associated.
The problem arises when I try to connect to that API from one of the VNet integrated App Services. As the destination IP is inside one of the IP ranges that are added to the routing with the use of a Service Endpoint, traffic is sent via that Service Endpoint instead of simple Azure routing. I've tried overriding the route with a Route Table associated to that subnet but that seems not to be possible, with or without a NAT Gateway attached to the subnet. I guess Azure routing is prioritized here. I'm sure the route is not effective as I used it on a different subnet where I deployed a VM.
Is there any way I can use that Service Endpoint for my internal traffic only so it's not used when it goes to an Azure hosted API or I need to switch to a different approach like Private Endpoints or an ASE?
I am unsure what you're looking for but if you want to explicitly define routes you should try using app services setting "WEBSITE_VNET_ROUTE_ALL" = 1 which overrides the default precedence of routing and makes sure that every outbound call follows the route defined inside route table of subnet.
Use the following steps to add the WEBSITE_VNET_ROUTE_ALL setting in your app:
Go to the Configuration UI in your app portal. Select New application setting.
Enter WEBSITE_VNET_ROUTE_ALL in the Name box, and enter 1 in the Value box.
When WEBSITE_VNET_ROUTE_ALL is set to 1, outbound traffic is still sent from the addresses that are listed in your app properties, unless you provide routes that direct the traffic elsewhere.
We've been able to ask the 3rd party to disable blocking rules. It turns out they had a rule that blocked this specific traffic.
I already tried changing that setting, but didn't try putting a route table on it. However, it'd make no difference as I can't define a list of allowed outbound IPs belonging to Azure since we have no static IP to call.
I received in hands a project where an Azure Application Gateway (AGW) uses as backend pool an Internal Load Balancer (ILB) App Service Environment (ASE) containing multiple apps.
The AGW is setup up using several multi-site listeners, where the host of the each multi-site listener matches a custom domain in an App Service instance running in the ILB ASE. Like this:
I need to add a new app to the ASE and corresponding configuration to the AGW.
The problem is that the AGW can have at maximum of 20 listeners, which has been reached in the project I received in hands. So I can't add more apps to the AGW with this setup.
To work around the listener limitation, with minimal changes, I would like to make use of multi-site path-based routing with the ILB ASE as backend pool.
I would like something that looks like the following:
I have spent some time going over the docs as well as other StackOverflow questions. I also have gone over the multi-site app service docs https://learn.microsoft.com/en-us/azure/application-gateway/create-web-app, including playing around with the -PickHostNameFromBackend switches.
I have made a few experiments without success so far.
I believe that what I want to do is currently not supported by the AGW. I think I understand why. The hostname passed from the AGW to the ILB ASE (api.example.com) is not present as custom domain in any of the App Service instances in the ASE, so the request will not be fulfilled. Correct me if I am wrong please.
Is my desired setup (Figure 2) possible ?
If not possible, what would be alternative solutions, with only one AGW as I have today?
Firstly you can open a support ticket to increase the listener/backend pool count from 20 to 40. That should offer you some expansion room immediately.
The second scenario should be possible as well. You should use api-aaa.example.com and api-bbb.example.com as backend pool members. And use the switch PickHostNameFromBackendAddress on HTTPSettings and also create a custom probe with PickHostNameFromBackendHttpSettings flag set and associate probe to the HTTPSetting. The you would use this setting in each path based rule while associate paths to backend pools. Please ensure that your internal DNS within VNet, can resolve api-aaa.example.com and api-bbb.example.com to the ILB IP 222.222.222.222.
My Requirement is to Access Fabric Application based on Tenant Domain
eg: i had 3 services
1)CustomerApps
2)CompanyApps
3)SignInApps
All the above apps deployed on azure service fabric Cluster
i already created Custom Domain in Azure Active directory and Verify that Domain with Register(eg: godady)
So, now i want to display each fabric Application based on Tenant/Domain name like, assumed i had custom domain dev-tennat.xyz.com
so,application url will be
dev-tennat.xyz.com/SignInApps
dev-tennat.xyz.com/CompanyApps
dev-tennat.xyz.com/CustomerApps
1) Your domain for example “your-domain.xyz.com” should be A type and has to point to your load balancer public IP. You can find IP under overview of your load balancer.
lbip
2) You need to configure custom probe for your load balances.
go to “Probes” under “Settings” category.
Select HTTP protocol
i’ve set port to 80 as i wanted something to be visible by default
In “Path” field you specify endpoint you want to expose it can be “/” or “/api/customapi”
Interval – set value in seconds. Every ‘n’ seconds your “Path” will be triggered to check if app is alive
3) You need to configure custom rule
Go to “Load balancing rules” under “Settings” category and create new rule. When creating new rule:
“Port” is your publicly exposed port (80 in my case),
“Backend port” is internal port of your app (you can find it in service manifest in <EndPoint /> element. In my case it’s 8164)
In “Probe” field select your probe which was created before.
There are some screenshots if needed:
https://eduardlos.wordpress.com/2016/10/10/how-to-access-your-app-when-deployed-to-azure-service-fabric-cluster/
We try to migrate our Platform from classical IIS hosting to a service fabric micro service architecture. So fare we learned that a service fabric lives in a virtual machine scale set and uses Load balancer to communicate to the outside world.
The Problem we now facing is that we have different access points to our application. Like one for browser, one for mobile app. Both use the standard https port, but are different applications.
In iis we could use host headers to direct traffic to one or the other application. But with service fabric we can’t. easiest way for us would be multiple public IP’s. With that we could handle it with dns.
We considered a couple solutions with no success.
Load balancer with Multiple public ip’s. Problem: it looks like that only works with Cloud Services and we need to work with the new Resource Manager World there it seems to be not possible to have multiple public ip’s.
Multiple public load balancer. Problem: Scale Sets accept only on load balancer instance pert load balancer type.
Application Gateway. Seems not to support multiple public ip’s or host header mapping.
Path mapping. Problem: we have the same path in different applications.
My questions are:
Is there any solution to use multiple IP’s and map the traffic internally to different ports?
Is there any option to use host header mapping with service fabric?
Any suggestion how I can solve my problem?
Piling on some Service Fabric-specific info to Eli's answer: Yes you can do all of this and use an http.sys-based self-hosted web server to host multiple sites using different host names on a single VIP, such as Katana or WebListener in ASP.NET Core 1.
The piece to this that is currently missing in Service Fabric is a way to configure the hostname in your endpoint definition in ServiceManifest.xml. Service Fabric services run under Network Service by default on Windows, which means the service will not have access to create a URL ACL for the URL it wants to open an endpoint on. To help with that, when you specify an HTTP endpoint in an endpoint definition in ServiceManifest.xml, Service Fabric automatically creates the URL ACL for you. But currently, there is no place to specify a hostname, so Service Fabric uses "+", which is the strong wildcard that matches everything.
For now, this is merely an inconvenience because you'll have to create a setup entry point with your service that runs under elevated privileges to run netsh to setup the URL ACL manually.
We do plan on adding a hostname field in ServiceManifest.xml to make this easier.
It's definitely possible to use ARM templates to deploy a Service Fabric cluster with multiple IPs. You'll just have to tweak the template a bit:
Create multiple IP address resources (e.g. using copy) - make sure you review all the resources using the IP and modify them appropriately
In the load balancer:
Add multiple frontendIPConfigurations, each tied to its own IP
Add loadBalancingRules for each port you want to redirect to the VMs from a specific frontend IP configuration
Add probes
As for host header mapping, this is handled by the Windows HTTP Server API (see this article). All you have to do is use a specific host name (or even a URL path) when configuring an HTTP listener URL (in OWIN/ASP.NET Core).