* agent: Consul 1.0 shipped with an issue where `Args` was erroneously named `ScriptArgs` for health check definitions in the /v1/agent/check/register and /v1/agent/service/register APIs. Added code to accept `Args` so that the JSON format matches that of health checks in configuration files. The `ScriptArgs` form will still be supported for backwards compatibility. [[GH-3587](https://github.com/hashicorp/consul/issues/3587)]
* agent: Docker container checks running on Linux could get into a flapping state because the Docker agent seems to close the connection prematurely even though the body is transferred. This caused a "connection reset by peer" error which put the check into `critical` state. As of Consul 1.0.1 the "connection reset by peer" error is ignored for the `/exec/<execID>/start` command of the Docker API. [[GH-3576](https://github.com/hashicorp/consul/issues/3576)]
* agent: Added new form of "consul.http.*" metrics that were accidentally left out of Consul 1.0. [[GH-3654](https://github.com/hashicorp/consul/issues/3654)]
* dns: Fixed an issue were components of a host name near the datacenter could be quietly ignored (eg. `foo.service.dc1.extra.consul` would silently ignore `.extra`); now an `NXDOMAIN` error will be returned. [[GH-3200](https://github.com/hashicorp/consul/issues/3200)]
* server: Fixed an issue where performing rolling updates of Consul servers could result in an outage from old servers remaining in the cluster. Consul's Autopilot would normally remove old servers when new ones come online, but it was also waiting to promote servers to voters in pairs to maintain an odd quorum size. The pairwise promotion feature was removed so that servers become voters as soon as they are stable, allowing Autopilot to remove old servers in a safer way. When upgrading from Consul 1.0, you may need to manually force-leave old servers as part of a rolling update to Consul 1.0.1. [[GH-3611](https://github.com/hashicorp/consul/issues/3611)]
James Phillips
7 years ago