github.com/hashicorp/consul

BREAKING CHANGES:

• Child process reaping support has been removed, along with the reap configuration option. Reaping is also done via dumb-init in the Consul Docker image, so removing it from Consul itself simplifies the code and eases future maintainence for Consul. If you are running Consul as PID 1 in a container you will need to arrange for a wrapper process to reap child processes. [GH-1988]
• The default for max_stale has been increased to a near-indefinite threshold (10 years) to allow DNS queries to continue to be served in the event of a long outage with no leader. A new telemetry counter has also been added at consul.dns.stale_queries to track when agents serve DNS queries that are over a certain staleness (>5 seconds). [GH-2481]
• The api package's PreparedQuery.Delete() method now takes WriteOptions instead of QueryOptions. [GH-2417]

FEATURES:

• Key/Value Store Command Line Interface: New consul kv commands were added for easy access to all basic key/value store operations. [GH-2360]
• Snapshot/Restore: A new /v1/snapshot HTTP endpoint and corresponding set of consul snapshot commands were added for easy point-in-time snapshots for disaster recovery. Snapshots include all state managed by Consul's Raft consensus protocol, including Key/Value Entries, Service Catalog, Prepared Queries, Sessions, and ACLs. Snapshots can be restored on the fly into a completely fresh cluster. [GH-2396]
• AWS auto-discovery: New -retry-join-ec2 configuration options added to allow bootstrapping by automatically discovering AWS instances with a given tag key/value at startup. [GH-2459]

IMPROVEMENTS:

• api: All session options can now be set when using api.Lock(). [GH-2372]
• agent: Added the ability to bind Serf WAN and LAN to different interfaces than the general bind address. [GH-2007]
• agent: Added a new tls_skip_verify configuration option for HTTP checks. [GH-1984]
• build: Consul is now built with Go 1.7.3. [GH-2281]

BUG FIXES:

• agent: Fixed a Go race issue with log buffering at startup. [GH-2262]
• agent: Fixed a panic during anti-entropy sync for services and checks. [GH-2125]
• agent: Fixed an issue on Windows where "wsarecv" errors were logged when CLI commands accessed the RPC interface. [GH-2356]
• agent: Syslog initialization will now retry on errors for up to 60 seconds to avoid a race condition at system startup. [GH-1610]
• agent: Fixed a panic when both -dev and -bootstrap-expect flags were provided. [GH-2464]
• agent: Added a retry with backoff when a session fails to invalidate after expiring. [GH-2435]
• agent: Fixed an issue where Consul would fail to start because of leftover malformed check/service state files. [GH-1221]
• agent: Fixed agent crashes on macOS Sierra by upgrading Go. [GH-2407, GH-2281]
• agent: Log a warning instead of success when attempting to deregister a nonexistent service. [GH-2492]
• api: Trim leading slashes from keys/prefixes when querying KV endpoints to avoid a bug with redirects in Go 1.7 (golang/go#4800). [GH-2403]
• dns: Fixed external services that pointed to consul addresses (CNAME records) not resolving to A-records. [GH-1228]
• dns: Fixed an issue with SRV lookups where the service address was different from the node's. [GH-832]
• dns: Fixed an issue where truncated records from a recursor query were improperly reported as errors. [GH-2384]
• server: Fixed the port numbers in the sample JSON inside peers.info. [GH-2391]
• server: Squashes ACL datacenter name to lower case and checks for proper formatting at startup. [GH-2059, GH-1778, GH-2478]
• ui: Fixed an XSS issue with the display of sessions and ACLs in the web UI. [GH-2456]