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chore(ecs): add service discovery note about dns resolution

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This commit is contained in:
Michele Cereda
2025-05-08 23:24:44 +02:00
parent 081f89af29
commit 181a25a78d
1 changed files with 50 additions and 11 deletions
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61
knowledge base/cloud computing/aws/ecs.md
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@@ -813,16 +813,14 @@ Procedure:
"serviceConnectConfiguration": {
"enabled": true,
"namespace": "ecs-dev-cluster",
"services": [
{
"portName": "postgres",
"discoveryName": "postgres",
"clientAliases": [{
"port": 5432,
"dnsName": "pgsql"
}]
}
]
"services": [{
"portName": "postgres",
"discoveryName": "postgres",
"clientAliases": [{
"port": 5432,
"dnsName": "pgsql"
}]
}]
},
```
@@ -876,7 +874,7 @@ Procedure:
1. Create the desired AWS Cloud Map namespace.
1. Create the desired Cloud Map service in the namespace.
1. Configure ECS services to use the Cloud Map service.
1. Configure the ECS service offering acting as server to use the Cloud Map service.
<details style="padding: 0 0 1rem 1rem">
@@ -888,6 +886,47 @@ Procedure:
</details>
NS lookup commands from within containers might fail, but they might still be able to resolve services registered in
CloudMap namespaces.
<details style="padding: 0 0 1rem 1rem">
```sh
$ aws ecs execute-command --cluster 'dev' \
--task 'arn:aws:ecs:eu-west-1:012345678901:task/dev/abcdef0123456789abcdef0123456789' --container 'prometheus' \
--interactive --command 'nslookup mimir.dev.ecs.internal'
The Session Manager plugin was installed successfully. Use the AWS CLI to start a session.
Starting session with SessionId: ecs-execute-command-p3pkkrysjdptxa8iu3cz3kxnke
Server: 172.16.0.2
Address: 172.16.0.2:53
Non-authoritative answer:
$ aws ecs execute-command --cluster 'dev' \
--task 'arn:aws:ecs:eu-west-1:012345678901:task/dev/abcdef0123456789abcdef0123456789' --container 'prometheus' \
--interactive --command 'wget -SO- mimir.dev.ecs.local:8080/ready'
The Session Manager plugin was installed successfully. Use the AWS CLI to start a session.
Starting session with SessionId: ecs-execute-command-hjgyio7n6nf2o9h4qn6ht7lzri
Connecting to mimir.dev.ecs.local:8080 (172.16.88.99:8080)
HTTP/1.1 200 OK
Date: Thu, 08 May 2025 09:35:02 GMT
Content-Type: text/plain
Content-Length: 5
Connection: close
saving to '/dev/stdout'
stdout 100% |********************************| 5 0:00:00 ETA
'/dev/stdout' saved
Exiting session with sessionId: ecs-execute-command-hjgyio7n6nf2o9h4qn6ht7lzri.
```
</details>
### VPC Lattice
Managed application networking service that customers can use to observe, secure, and monitor applications built across