github.com/hashicorp/consul

SECURITY:

• connect: Envoy versions lower than 1.9.1 are vulnerable to CVE-2019-9900 and CVE-2019-9901. Both are related to HTTP request parsing and so only affect Consul Connect users if they have configured HTTP routing rules via the "escape hatch". We recommend Envoy 1.9.1 be used. Note that while we officially deprecate support for older version of Envoy in 1.5.0, we recommend using Envoy 1.9.1 with all previous versions of Consul Connect too (back to 1.3.0 where Envoy support was introduced).

BREAKING CHANGES:

• /watch: (note this only affects downstream programs importing /watch package as a library not the watch feature in Consul) The watch package was moved from github.com/hashicorp/consul/watch to github.com/hashicorp/consul/api/watch to live in the API module. This was necessary after updating the repo to use Go modules or else various other bugs cropped up. The watch package API has not changed so projects depending on it should need to only update the import statement to get their code functioning again. [GH-5664]
• ui: Legacy UI has been removed. Setting the CONSUL_UI_LEGACY environment variable to 1 or true will no longer revert to serving the old UI. [GH-5643]

FEATURES:

• Connect Envoy Supports L7 Observability: We introduce features that allow configuring Envoy sidecars to emit metrics and tracing at L7 (http, http2, grpc supported). For more information see the Envoy Integration docs.
• Centralized Configuration: Enables central configuration of some service and proxy defaults. For more information see the Configuration Entries docs
• api: Implement data filtering for some endpoints using a new filtering language. [GH-5579]
• snapshot agent (Consul Enterprise): Added support for saving snapshots to Azure Blob Storage.
• acl: tokens can be created with an optional expiration time [GH-5353]
• acl: tokens can now be assigned an optional set of service identities [GH-5390]
• acl: tokens can now be assigned to roles [GH-5514]
• acl: adding support for kubernetes auth provider login [GH-5600]
• ui: Template-able Dashboard links for Service detail pages [GH-5704] [GH-5777]
• ui: support for ACL Roles [GH-5635]

IMPROVEMENTS:

• cli: allow to add ip addresses as Subject Alternative Names when creating certificates with consul tls cert create [GH-5602]
• dns: Allow for hot-reload of many DNS configurations. [GH-4875]
• agent: config is now read if json or hcl is set as the config-format or the extension is either json or hcl [GH-5723]
• acl: Allow setting token accessor ids and secret ids during token creation. [GH-4977]
• ui: Service Instances page redesign and further visibility of Connect Proxies [GH-5326]
• ui: Blocking Query support / live updates for Services and Nodes, requires enabling per user via the UI Settings area [GH-5070] [GH-5267]
• ui: Finer grained searching for the Service listing page [GH-5507]
• ui: Add proxy icons to proxy services and instances where appropriate [GH-5463]

BUG FIXES:

• api: fix panic in 'consul acl set-agent-token' [GH-5533]
• api: fix issue in the transaction API where the health check definition struct wasn't being deserialized properly [GH-5553]
• acl: memdb filter of tokens-by-policy was inverted [GH-5575]
• acl: Fix legacy rules translation for JSON based rules. [GH-5493]
• agent: Fixed a bug causing RPC errors when the discovery_max_stale time was exceeded. [GH-4673]
• agent: Fix an issue with registering health checks for an agent service where the service name would be missing. [GH-5705]
• connect: fix an issue where Envoy would fail to bootstrap if some upstreams were unavailable [GH-5499]
• connect: fix an issue where health checks on proxies might be missed by watchers of /health/service/:service API [GH-5506]
• connect: fix a race condition that could leave proxies with no configuration for long periods on startup [GH-5793]
• logger: fix an issue where the log-file option was not respecting the log-level [GH-4778]
• catalog: fix an issue where renaming nodes could cause registration instability [GH-5518]
• network areas (Consul Enterprise): Fixed an issue that could cause a lock to be held unnecessarily causing other operations to hang.

SECURITY:

• acl: fixed an issue that if an ACL rule is used for prefix matching in a policy, keys not matching that specific prefix can be deleted by a token using that policy even with default_deny settings configured [GH-5888]