This tool can be used to perform a health check operations against the Docker containers. It has support for plugins, thus it is easely extensible.

There are three plugins atm.:

• http - Perform a HTTP health check against container.
• mongo - Perform a MongoDB connection test against container
• tcp - Perform a generic TCP connection test
• file - Perform a check if the file exists in container

The connection based plugins will guess the port from the container by default (from EXPOSE).

# Check if the container respond to HTTP requests
$ healthck status 3e3a1ebbb4dd -P http

# Check if the MongoDB container is ready for connections
$ healthck status 3e3a1ebbb4dd -P mongo

# A generic TCP check
$ healthck status 3e3a1ebbb4dd -P tcp

# A file check
$ healthchk status 347cf00e6650 -P file /etc/hosts

To add a new plugin, all you have to do is to create a struct that implements two methods: Name() and Perform(). See the existing plugins for an example.

Apache Software License (ASL) 2.0.