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CHANGELOG.md
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@ -5,12 +5,15 @@ FEATURES:
* **Secure ACL Token Introduction:** It's now possible to manage Consul's ACL tokens without having to place any tokens inside configuration files. This supports introduction of tokens as well as rotating. This is enabled with two new APIs:
* A new [`/v1/agent/token`](https://www.consul.io/api/agent.html#update-acl-tokens) API allows an agent's ACL tokens to be introduced without placing them into config files, and to update them without restarting the agent. See the [ACL Guide](https://www.consul.io/docs/guides/acl.html#create-an-agent-token) for an example. This was extended to ACL replication as well, along with a new [`enable_acl_replication`](https://www.consul.io/docs/agent/options.html#enable_acl_replication) config option. [GH-3324,GH-3357]
* A new [`/v1/acl/bootstrap`](https://www.consul.io/api/acl.html#bootstrap-acls) allows a cluster's first management token to be created without using the `acl_master_token` configuration. See the [ACL Guide](https://www.consul.io/docs/guides/acl.html#bootstrapping-acls) for an example. [GH-3349]
* **Metrics Viewing Endpoint:** A new [`/v1/agent/metrics`](https://www.consul.io/api/agent.html#view-metrics) API displays the current values of internally tracked metrics. [GH-3369]
IMPROVEMENTS:
* agent: Retry Join for Amazon AWS, Microsoft Azure, Google Cloud, and (new) SoftLayer is now handled through the https://github.com/hashicorp/go-discover library. With this all `-retry-join-{ec2,azure,gce}-*` parameters have been deprecated in favor of a unified configuration. See [`-retry-join`](https://www.consul.io/docs/agent/options.html#_retry_join) for details. [GH-3282,GH-3351]
* agent: Reports a more detailed error message if the LAN or WAN Serf instance fails to bind to an address. [GH-3312]
* agent: Added NS records and corrected SOA records to allow Consul's DNS interface to work properly with zone delegation. [GH-1301]
* agent: Added support for sending metrics with labels/tags to supported backends. [GH-3369]
* agent: Added a new `prefix_filter` option in the `telemetry` config to allow fine-grained allowing/blocking the sending of certain metrics by prefix.
* cli: Added a `-child-exit-code` option to `consul lock` so that it propagates an error code of 2 if the child process exits with an error. [GH-947]
* docs: Added a new [Geo Failover Guide](https://www.consul.io/docs/guides/geo-failover.html) showing how to use prepared queries to implement geo failover policies for services. [GH-3328]
* docs: Added a new [Consul with Containers Guide](https://www.consul.io/docs/guides/consul-containers.html) showing critical aspects of operating a Consul cluster that's run inside containers. [GH-3347]