Abdelali12-codes/ecs-blue-green-backend

ecs blue/green deployment using codedeploy blue/green

• create the ecs task definition using the below command:

aws ecs register-task-definition --cli-input-json file://taskdef.json

• create the ecs service using the below command:

aws ecs create-service --service-name my-service --cli-input-json file://create-service.json

• describe a service on the ecs cluster

aws ecs describe-services --cluster cluster-name --services service-name

ECS standard deployment action

in this deployment you must have imagedefinitions.json file on your source code or you can output it during the build stage in the buildspec.yml file, make sure to add this line n the post-build stage in the buildspec file

printf '[{"name":"container_name","imageUri":"image_URI"}]' > imagedefinitions.json

ECS (Blue/Green) deployment action

in this deployment you must have imageDetail.json file on your source code or you can output it during the build stage in the buildspec.yml file, make sure to add this line n the post-build stage in the buildspec file

printf '{"ImageURI":"%s"}' $REPOSITORY_URI:$IMAGE_TAG  > imageDetail.json

• codebuild url https://docs.aws.amazon.com/codebuild/latest/userguide/build-spec-ref.html

troubleshooting aws ecs

setting up the ssm

• create task iam role

{
   "Version": "2012-10-17",
   "Statement": [
       {
       "Effect": "Allow",
       "Action": [
            "ssmmessages:CreateControlChannel",
            "ssmmessages:CreateDataChannel",
            "ssmmessages:OpenControlChannel",
            "ssmmessages:OpenDataChannel"
       ],
      "Resource": "*"
      }
   ]
}

• create service for your ecs task

aws ecs create-service \
    --cluster cluster-name \
    --task-definition task-definition-name \
    --enable-execute-command \
    --service-name service-name \
    --desired-count 1

• update existing service

aws ecs update-service \
   --cluster cluster-name \
   --service my-http-service \
   --task-definition amazon-ecs-sample  \
   --enable-execute-command 

• list the task definition

aws ecs list-tasks --cluster default

• list the task with the family name

aws ecs list-tasks \ 
 --cluster default \
 --family task-name

• describe task

aws ecs describe-tasks \
    --cluster cluster-name \
    --tasks task-id

• after running the above command make sure that you have the same result as shown below:

{
    "tasks": [
        {
            ...
            "containers": [
                {
                    ...
                    "managedAgents": [
                        {
                            "lastStartedAt": "2021-03-01T14:49:44.574000-06:00",
                            "name": "ExecuteCommandAgent",
                            "lastStatus": "RUNNING"
                        }
                    ]
                }
            ],
            ...
            "enableExecuteCommand": true,
            ...
        }
    ]
}

• if you have not the same result make sure to restart your taskdefinition. try to go to your service and make the number of tasks to 0, then reset to the number of tasks that fit you and try to run the same above command and see whether you get the result above or not

• run the exec command

aws ecs execute-command --cluster cluster-name \
    --task task-id \
    --container container-name \
    --interactive \
    --command "/bin/sh"