How to achieve the above goals in ECS? If I create two containers (A and B) in a single task definition, then when running multiple services of this task, multiple containers of A and B will run.
Please note that I am working Use CloudFormation to achieve the above goals.
Thanks in advance.
AWS::ECS::Service
AWS::ElasticLoadBalancingV2::LoadBalancer
AWS::ElasticLoadBalancingV2::TargetGroup
AWS::ElasticLoadBalancingV2::Listener
Basically, You add each resource type to the CloudFormation template. Resources will refer to each other in these ways:
> AWS::ECS::Service -> TargetGroup’s ARN (in the LoadBalancers attribute)
> AWS::ElasticLoadBalancingV2::Listener -> LoadBalancer’s ARN (LoadBalancerArn attribute), TargetGroup’s ARN (in DefaultActions attribute)
Please note that you can use the “Scheme” attribute to make AWS::ElasticLoadBalancingV2: LoadBalancer resources are internal or Internet-facing. If you want to keep Service B confidential, you only need to set it to “Internal”.
Of course, you also need to add various resource types to build an ECS cluster/ The rest of the service, but I assume you have used this part in the template.
Once the CloudFormation stack changes are deployed, the load balancer will have a URL (you can use “Fn::GetAtt” Add it to the output of the stack: [“LogicalIDOfLBResource”,”DNSName”] – see the “DNSName” return value in the docs here). When you make a request to this URL, the load balancer will automatically connect to any B container and return a response from the container, so you You can use this URL in the A container to connect from A to B.
This is an example. There is a docker container A (such as connecting to a back-end service). I get from docker image B runs multiple containers (such as connecting to the front end of the back-end through a service). Now, I want to link all containers from B (B1, B2, B3, etc.) to container A.
How to achieve the above goals in ECS? If I create two containers (A and B) in a single task definition, then when running multiple services of this task, multiple containers of A and B will run.
Please note that I am working Use CloudFormation to achieve the above goals.
Thanks in advance.
The easiest way is to create multiple ECS services. You can use the same Create these clusters in a cluster or different clusters (it really depends on how you want to set up the infrastructure). Put the service of container B behind the application load balancer, and then let the load balancer connect to during the processing of requests from container A Individual containers. To perform this operation in CloudFormation, you need to create the following CloudFormation resource types:
AWS::ECS::Service
AWS::ElasticLoadBalancingV2::LoadBalancer
AWS::ElasticLoadBalancingV2::TargetGroup
AWS::ElasticLoadBalancingV2::Listener
Basically, you add each resource type to the CloudFormation template. Resources will refer to each other in these ways:
> AWS::ECS::Service -> TargetGroup’s ARN (in the LoadBalancers attribute)
> AWS::ElasticLoadBalancingV2::Listener -> LoadBalancer’s ARN (LoadBalancerArn attribute), TargetGroup’s ARN (in the DefaultActions attribute)
Please note that you can use the “Scheme” attribute to make the AWS::ElasticLoadBalancingV2::LoadBalancer resource internal or facing the Internet. If you want to put the service B is confidential, you only need to set it to “internal”.
Of course, you also need to add various resource types to build the rest of the ECS cluster/service, but I assume you are already in the template This section is used in .
Once the CloudFormation stack changes are deployed, the load balancer will have a URL (you can use “Fn::GetAtt” to add it to the output of the stack: [“LogicalIDOfLBResource ”,“DNSName”] – see the “DNSName” return value in the docs here). When you make a request to this URL, the load balancer will automatically connect to any B container and return a response from the container, so you can use this URL in the A container to connect from A to B.