ecs-task-discovery

README

ecs-task-discovery

ecs-task-discovery is a Go module that performs service discovery for ECS tasks.

Groupcache Task Discovery

The package groupcachediscovery implements task discovery for groupcache-enabled applications running on AWS ECS.

See package documentation here: groupcachediscovery

Find an example toy application using groupcache with groupcachediscovery here: https://github.com/udhos/kubecache/blob/main/cmd/kubecache/groupcache.go

Usage

See example: ./cmd/ecs-task-discovery-example/main.go

Build Example

./build.sh

Run example

export SERVICE=ecs-task-discovery-example

ecs-task-discovery-example

Testing agent

# mock metadata server
cd samples
python3 -m http.server 8000

# run agent pointing to mocked metadata
export FORCE_SINGLE_TASK=true
export ECS_CONTAINER_METADATA_URI_V4=http://localhost:8000
ecs-task-discovery-agent

curl localhost:8080/tasks/ecs-task-discovery-example

export ECS_TASK_DISCOVERY_AGENT_URL=http://localhost:8080/tasks
export ECS_CONTAINER_METADATA_URI_V4=http://localhost:8000
ecs-task-discovery-example

References

ECS Exec Checker

ECS Exec Checker: https://github.com/aws-containers/amazon-ecs-exec-checker

git clone https://github.com/aws-containers/amazon-ecs-exec-checker

cd amazon-ecs-exec-checker

./check-ecs-exec.sh demo 1641160e91d34bbf880549bde1981fb3

Execute command

aws ecs update-service \
    --task-definition miniapi \
    --cluster demo \
    --service demo \
    --enable-execute-command \
    --force-new-deployment

aws ecs execute-command --cluster demo \
    --task 1641160e91d34bbf880549bde1981fb3 \
    --container miniapi \
    --interactive \
    --command "/bin/sh"