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CHANGELOG.md

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Upcoming

IMPROVEMENTS:

  • Add support for arm64 builds. [GH-98, GH-88]
  • Update logging to use hclog. [GH-97]
  • Add log_json configuration option to allow enabling JSON logging. [GH-105, GH-82]
  • Update -version output to standardize with other ecosystem projects. [GH-99, GH-87]

BUG FIXES:

  • Fixed issue where anti-flapping counters were reset to zero when updating checks with latest from catalog. [GH-103]

v0.5.0 (December 7, 2020)

IMPROVEMENTS:

  • Add metrics support with configurable telemetry block. [GH-67]
  • Add configurable http endpoint to expose telemetry metrics. [GH-90, GH-89]
  • Support anti-flapping with configuration options passing_threshold and critical_threshold. [GH-78, GH-50]
  • Update caught signal log from info-level to debug-level. [GH-79]
  • Improve flaky tests. [GH-80]
  • Add mTLS support for HTTPS checks with configuration options https_ca_file, https_ca_path, https_cert_file, and https_key_file. [GH-81, GH-72]

BUG FIXES:

  • Remove checking status when syncing checks, which can cause flapping. [GH-83]
  • Reduce goroutines used in external-probe ping. [GH-85]

DOCUMENTATION:

  • Fix outdated "Consul ACL Policies" to include operator = "read" needed for 0.4.0 feature to check ESM and Consul version compatibility. [GH-75 & GH-91, GH-74]
  • New documentation on finer-grained ACL policies and context on how each ACL is used. [GH-76, GH-77]

v0.4.0 (July 27, 2020)

IMPROVEMENTS:

  • Update to compile with Go version 1.13. [GH-64]
  • Prevent health checks from running more frequently than once per second. [GH-63]
  • Prevent spurious node status updates so that they only update on status change or status expiration. [GH-63]
  • Allow disabling coordinate updates with disable_coordinate_updates configuration option. [GH-63]
  • Support clusters of over 64 ESM instances. [GH-63]
  • Skip updating small changes in node coordinates. [GH-63]
  • Add more logging. [GH-63]
  • Add consul version compatibility check on startup. [GH-62]
  • Switch to Go Modules. [GH-47]
  • Allow setting a unique ESM instance id with instance_id configuration option. [GH-61, GH-60]

BUG FIXES:

  • Fix an issue when there are no healthy Consul instances. [GH-48, GH-43]
  • Fix broken ping by switching to new library. [GH-46, GH-45]
  • Fix spurious updates that cause delays in updating health checks by reading health check in consistent mode. [GH-68]

DOCUMENTATION:

  • Request users to use 👍 voting system to help prioritize issues and pull requests. [GH-57]
  • Clarification on time when ESM becomes critical and deregisters. [GH-54]
  • Minimum ACL rules required to run ESM. [GH-66]

v0.3.3 (April 12, 2019)

BUG FIXES:

  • Set a default check interval of 30s. This prevents the check from running in a busy loop if consul-esm gets back an empty check interval from the api.
  • Fixed an issue where the catalog would not be updated despite a change in a health probe result.[GH-36]

v0.3.2 (January 23, 2019)

BUG FIXES:

  • Fixed an issue where updates to external nodes or their health by the user could be overwritten by Consul-ESM. Now uses the transaction API in Consul for catalog operations.

v0.3.1 (October 31, 2018)

IMPROVEMENTS:

  • Pings to external nodes now run in parallel over the node_probe_interval instead of serially.

BUG FIXES:

  • Fixed an issue where the wrong KV path was used for node health.

v0.3.0 (August 9, 2018)

IMPROVEMENTS:

  • The work of health checking and node probing will now be divided up amongst all ESM agents that share a consul_service/consul_service_tag/consul_kv_path combination. This is done by the leader using the KV store for coordination. The consul_leader_key field has been replaced by consul_kv_path, which is a path to a KV directory for a coordinating set of ESM nodes to share.
  • Added the node_probe_interval config field for controlling how often ESM will attempt to probe each external node.
  • Check definitions can now be updated in-place. [GH-17]

BUG FIXES:

  • Fixed an issue where the coordinate loop would run constantly and burn CPU when there were no nodes to probe.

v0.2.0 (March 27, 2018)

IMPROVEMENTS:

  • Correctly exit on SIGTERM as well as SIGINT.
  • Use a simpler UDP ping that doesn't require root privileges. [GH-5]
  • Add a config option for setting the ping method (UDP or socket).

BUG FIXES:

  • Fixed the DeregisterCriticalServiceAfter field not being handled correctly. [GH-7]

v0.1.0 (January 12, 2018)

  • Initial release