albio

A CLI tool to gracefully manage EC2 instances on ALB/NLB.

Usage

Show loadbalancers status

$ albio status
[
    {
        "name": "albtest001",
        "dnsname": "albtest001-00000000.ap-northeast-1.elb.amazonaws.com",
        "arn": "arn:aws:elasticloadbalancing:ap-northeast-1:100000000000:loadbalancer/app/albtest001/11xxxxxxxxxxxxxxxxxx"
        "type": "application",
        "scheme": "internet-facing",
        "instances": [
            {
                "instance-id": "i-xxxxxxxxxxxxxxxxx"
            },
            {
                "instance-id": "i-yyyyyyyyyyyyyyyyy"
            }
        ]
    }
]

Take an instance under maintenance

$ sudo mkdir -m 777 -p /var/lib/albio
$ albio detach --self > /var/lib/albio/loadbalancers.json
--> Detaching i-xxxxxxxxxxxxxxxxx from albtest001
$ # something to restart command
$ cat /var/lib/albio/loadbalancers.json | albio attach --self
--> Attaching i-0f5ffb9f0a75e6b85 to albtest001

Debugging

Set non-zero number or non-empty string to the ALBIO_DEBUG enviroment variable.

License

The MIT License.

Author

y_uuki