Description

Script used to replace current application instances with the new one.

Requirements:

• Application AMI has got opened port 80
• Currently working application instances are connected to the Application Load Balancer

Usage

./deploy OLD_AMI NEW_AMI

Example

Correct process

$ ./deploy ami-0d279985b668e9b38 ami-0aa2563dfc98ff16b

[main.InitializePipelineAction] Executing.
[main.InitializePipelineAction] Finished. No errors
[main.ListInstancesAction] Executing.
[main.ListInstancesAction] Finished. No errors
[main.FindLoadBalancerAction] Executing.
[main.FindLoadBalancerAction] Finished. No errors
[main.RunInstancesAction] Executing.
[main.RunInstancesAction] Finished. No errors
[main.WaitUntilStatusOkAction] Executing.
[main.WaitUntilStatusOkAction] Finished. No errors
[main.AuthorizeSecurityGroupsAction] Executing.
[main.AuthorizeSecurityGroupsAction] Finished. No errors
[main.CollectPublicIpsAction] Executing.
[main.CollectPublicIpsAction] Finished. No errors
[main.TestInstancesAction] Executing.
[main.TestInstancesAction] Finished. No errors
[main.RegisterNewInstancesAction] Executing.
[main.RegisterNewInstancesAction] Finished. No errors
[main.DeregisterOldInstancesAction] Executing.
[main.DeregisterOldInstancesAction] Finished. No errors
[main.WaitForDeregisterAction] Executing.
[main.WaitForDeregisterAction] Finished. No errors
[main.TerminateOldInstancesAction] Executing.
[main.TerminateOldInstancesAction] Finished. No errors

Process with errors

$ ./deploy ami-0d279985b668e9b38 ami-0aa2563dfc98ff16b
[main.InitializePipelineAction] Executing.
[main.InitializePipelineAction] Finished. No errors
[main.ListInstancesAction] Executing.
[main.ListInstancesAction][ERROR] Not found any running instance
[main.ListInstancesAction] Rolling changes back
[main.InitializePipelineAction] Rolling changes back

Development Workflow

Prerequisites

• Install GO lang
• Install the make
• Export GOPATH and add $GOPATH/bin to the PATH env variable

Compile the project

make dependencies
make compile

Build the project

make dependencies
make build

Check linter errors

make dependencies
make lint

Run unit tests

make dependencies
make test