Firecracker-v0.3.0

Added

• Users can interrogate the Machine Configuration (i.e. vcpu count and memory size) using a GET request on /machine-config.
• The logging system can be configured through the API using a PUT on /logger.
• Block devices support live resize by calling PUT with the same parameters as when the block was created.
• Release builds have Link Time Optimization (LTO) enabled.
• Firecracker is built with musl, resulting in a statically linked binary.
• More in-tree integration tests were added as part of the continuous integration system.

Changed

• The vcpu count is enforced to 1 or an even number.
• The Swagger definition of rate limiters was updated.
• Syslog-enabled logs were replaced with a hostfile backed mechanism.

Fixed

• The host topology of the CPU and the caches is not leaked into the microvm anymore.
• Boot time was improved by advertising the availability of the TSC deadline timer.
• Fixed an issue which prevented Firecracker from working on 4.14 (or newer) host kernels.
• Specifying the MAC address for an interface through the API is optional.

Removed

• Removed support for attaching vsock devices.
• Removed support for building Firecracker with glibc.