Associate a Route53 record set to the public IP of an ECS Fargate Task.
RUN curl -sL -o /usr/local/bin/ptask \
https://github.com/yuyangd/ptask/releases/download/v0.2/ptask \
&& chmod +x /usr/local/bin/ptask
ENTRYPOINT ["/usr/local/bin/ptask", "exec", "--"]Build the ptask image
FROM alpine:3 AS downloader
# install curl
RUN apk --no-cache add curl ca-certificates
# Download ptask
RUN curl -sL -o /ptask \
https://github.com/yuyangd/ptask/releases/download/v0.2/ptask \
&& chmod +x /ptask
FROM scratch
COPY --from=downloader /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
COPY --from=downloader /ptask /
ENTRYPOINT [ "/ptask" ]Example Task Definition in CFN
EcsTaskDefinition:
Type: AWS::ECS::TaskDefinition
Properties:
ContainerDefinitions:
- Name: ptask
Image: <PTASK-IMAGE>
Essential: false
LogConfiguration:
LogDriver: awslogs
Options:
awslogs-group:
Ref: CloudWatchLogsGroup
awslogs-region:
Ref: AWS::Region
awslogs-stream-prefix: fargate/bastion
Environment:
- Name: AWS_DEFAULT_REGION
Value: ap-southeast-2
- Name: HOSTHEADER
Value: <PTASK.EXAMPLE.COM>
- Name: HOSTZONE
Value: <EXAMPLE.COM.>Policies:
- PolicyName: ECSTaskWithDNS
PolicyDocument:
Statement:
- Effect: Allow
Action:
- ecs:DescribeTasks
- ec2:DescribeNetworkInterfaces
- route53:ChangeResourceRecordSets
- route53:GetChange
- route53:ListHostedZones
- route53:ListResourceRecordSets
- cloudformation:CreateStack
- cloudformation:DescribeStacks
- cloudformation:UpdateStack
Resource: "*"# Run locally
GOOS=linux GOARCH=amd64 go build .
# Via docker
export DOCKER_BUILDKIT=1 ## Enable Buildkit
docker build -o disk .
# Build docker image
docker build -t "ptask:v1" .# == Start mock
# Change the Cluster and Task ARN in main.go to target your AWS account
go run mock/main.go
# == Start ptask
# Ensure AWS credential or configuration setup locally
HOSTHEADER=ptask.example.com HOSTZONE=example.com. go run *.go
# == Expecting log messages
# 2020/10/13 11:12:13 arn:aws:ecs:ap-southeast-2:123456789012:cluster/my-ecs-cluster
# 2020/10/13 11:12:14 arn:aws:ecs:ap-southeast-2:123456789012:task/my-ecs-cluster/dfc8752c12344e17afee8696be98ak78
# 2020/10/13 11:12:15 Task ENI provisioned: eni-12345ea8e38cb281c
# 2020/10/13 11:12:16 Public IP: 14.125.12.4
# 2020/10/13 11:12:17 Create or update record set: ptask.example.com
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