v0.4.0

Noteworthy changes from 0.3.0

Scheduler

• If an image cannot be pulled, Swarm will attempt to schedule the container on a node that already has it. This makes scheduling local images (built by docker build but not available on the registry) possible on Swarm.
• Prevent a crash when a freshly created container cannot be retrieved from an Engine

Store

• Migration to libkv for the storage backends
• Include bug fixes on node discovery and Leader Election for Consul, etcd, and zookeeper
• Consul backend fails explicitly when given multiple endpoints instead of discarding

Replication

• Fault tolerant Leader Election process

API

• Fix status code for docker exec and docker pull
• Fix docker push name matching
• Add new endpoints for docker cp
• Improved error messages thrown at pull
• Improved build process: It now accepts resource constraints (-c and -m) to schedule the build on a suitable machine.
• Fix content-type for load

Docker Engine Compatibility

• Improve docker info with docker client 1.7.x
• Add SystemTime, http_proxy, https_proxy and no_proxy to docker info

Mesos integration

• Task creation timeout configurable
• Fix issue with hostname in library image
• Use docker_port attribute if available
• Add support for random ports

Misc

• Add documentation on Leader Election / High Availability of swarm manager
• Lots of typos/improvements to the documentation
• Switch to golang 1.4

Downloads

docker pull swarm:0.4.0