Via #1012 #968 @alexellis @acornies

Changelog:

• Enable backoff/retries on scaling up #949

The above fixes issues when scaling from zero with high concurrency.

Changelog:

• Extract scaling from zero into a package #943

This will make the code accessible by the queue-worker for scaling from asynchronous workloads.

Prior release had a typo 0.9,.8

Changelog:

• Pass redirects back to client #925
• Log scaling from zero #927

With this release stateless microservices and of-watchdog functions can return a redirect header which is not followed by the proxying layer. That means the workload can request that the client redirect in the browser/location. The primary use-case is for OAuth 2.0 authorization flows.

Release passes HTTP Host header which was absent in the watchdog.

Changelog:

• Expose scale-function endpoint via the gateway @alexellis

This change is described in Swagger and exposes the /system/scale-function endpoint (protected by auth, if enabled)

For OpenFaaS on Docker Swarm as of 0.8.6 we will enable basic-auth by default if using ./deploy_stack.sh

Read more: https://docs.openfaas.com/deployment/docker-swarm/

Gateway changes:

• Enable basic auth on gateway #691

Watchdog:

• None

• Gateway
  Add health and info endpoints #690

• Watchdog
  No changes

Gateway UI:

• Message for people without JavaScript turned on #647
• A helpful landing page for no function selected / no functions deployed #512

This release updates container images to the latest versions so the whole release can be checked out at a known version.

• Feature: Add direct_functions mode to gateway for tuning #592
• Fix bug in watchdog for default value of combine_output #601
• Watchdog gains graceful shutdown via #591

• Logging of forwarded calls is reduced from three lines to 1 with #577
• Watchdog gains graceful shutdown via #591
• Watchdog gains healthcheck over HTTP via #583
• Fix bug in watchdog #601

This release contains two changes for the watchdog:

• port environmental variable is enabled for local debugging outside of Docker
• combine_output can be set to false so that stderr goes to the container logs rather than the function response. By default this remains set to true to maintain compatibility.

Read more in updated Watchdog reference

This release adds function readiness to the OpenFaaS UI meaning a function cannot be invoked until it has been shown to be available by the cluster.

• Move to http.Client for reverse proxying #554

• Expose endpoint from back-end provider to query individual function's data #545 via @alexellis
• Extend model to support AvailableReplicas #546 via @imikushin

• Allow timeouts to be specified in Golang durations via @viveksyngh

• Upgrades to Prometheus 2.0
• Moves Swarm to external provider model via new repository https://github.com/openfaas/faas-swarm

This fixes the gateway to query Prometheus 1.0 and 2.0 correctly in 262b0af