mesos-ec2-healthcheck

This is a healthcheck script that will set the instance HealthStatus property of an AWS AutoScaling instance to Unhealthy if the instance is no longer registered as a slave according to a given mesos master

Setup

Environment

You'll need bower for dependency management, and pulp, the purescript build tool. They can be installed easily with npm.

npm install -g bower pulp

Dependencies

To install purescript dependencies run

bower i

Then to install node runtime dependencies, run

npm install

Compilation

Building the purescript modules is very simple.

pulp build

Usage

NODE_PATH=output node app -m http://my-mesos-master:5050 -r us-east-1 -g someGroup -g someOtherGroup

You have to set the NODE_PATH environment variable to tell node to look in the output directory as well as node_modules so that it can find the compiled purescript modules.

AWS Credentials may be passed in all the standard ways:

• Through the ~/.aws/credentials file
• Through the AWS_SECRET_ACCESS_KEY and AWS_ACCESS_KEY_ID files.

Note that the AWS region must be supplied explicitly as a command line parameter and not just through the AWS_DEFAULT_REGION environment variable or other manner. The desired region is represented by the -r or --region options.

Docker

The entrypoint of the docker container is, by default, configured to be node, and the working directory to be the root of the built and configured application. Therefore, to run mesos-ec2-healthcheck, one could do something like the following.

docker run -e AWS_SECRET_ACCESS_KEY=key -e AWS_ACCESS_KEY_ID=keyid truviewlive/mesos-ec2-healthcheck app -m http://my-mesos-master:5050 -r us-east-1 -g someGroup -g someOtherGroup

Licence

mesos-ec2-healthcheck is distributed under the MIT License