prepare v2.1.0 release

CHANGELOG.md

@@ -1,3 +1,25 @@
+v2.1.0
+======
+
+This release contains changes in metric paths exported to Graphite, you may need to fix your dashboard when upgrading. Otherwise everything in backwards compatible.
+
+Improvements:
+
+* Refactored export to Graphite, you can now control aggregation interval using `graphite_interval` option (in seconds), during refactoring some magical path transformation was removed so now we have more predictable path generation. Though Graphite paths changed with this refactoring
+* Web interface rewritten using modern Javascript stack - latest React, Webpack instead of Gulp, ES6 syntax 
+* Aggregated metrics also added to `info` command reply. This makes it possible to look at metrics in admin panel too when calling `info` command
+* More options can be set over environment variables – see [#254](https://github.com/centrifugal/centrifugo/issues/254)
+* Healthcheck endpoint – see [#252](https://github.com/centrifugal/centrifugo/issues/252)
+* New important chapter in docs – [integration guide](https://centrifugal.github.io/centrifugo/guide/)
+* Support setting `api_key` when using `Deploy on Heroku` button
+* Better timeout handling in Redis engine – client timeout is now bigger than default `redis_read_timeout` so application can more reliably handle errors
+
+Fixes:
+
+* Dockerfile had no correct `WORKDIR` set so it was only possible to use absolute config file path, now this is fixed in [this commit](https://github.com/centrifugal/centrifugo/commit/08be85223aa849d9996c16971f9d049125ade50c) 
+* Show node version in admin web panel
+* Fix possible goroutine leak on client connection close, [commit](https://github.com/centrifugal/centrifuge/commit/a70909c2a2677932fcef0910525ea9497ff9acf2)
+
 v2.0.2
 ======
 

docs/content/server/configuration.md

@@ -358,14 +358,25 @@ http://localhost:8000/debug/pprof/
 
 – will show you useful info about internal state of Centrifugo instance. This info is especially helpful when troubleshooting. See [wiki page](https://github.com/centrifugal/centrifugo/wiki/Investigating-performance-issues) for more info.
 
+#### Healthcheck endpoint
+
+New in v2.1.0
+
+Use `health` boolean option (by default `false`) to enable healthcheck endpoint which will be available on path `/health`. Also available over command-line flag:
+
+```bash
+./centrifugo -c config.json --health
+```
+
 #### Custom internal ports
 
 We strongly recommend to not expose API, admin, debug and prometheus endpoints to Internet. The following Centrifugo endpoints are considered internal:
 
 * API endpoint (`/api`) - for HTTP API requests
 * Admin web interface endpoints (`/`, `/admin/auth`, `/admin/api`) - used by web interface
 * Prometheus endpoint (`/metrics`) - used for exposing server metrics in Prometheus format 
-* debug endpoints (`/debug/pprof`) - used to inspect internal server state
+* Healthcheck endpoint (`/health`) - used to do healthchecks
+* Debug endpoints (`/debug/pprof`) - used to inspect internal server state
 
 It's a good practice to protect those endpoints with firewall. For example you can do this in `location` section of Nginx configuration.
 

docs/content/server/monitoring.md

@@ -33,4 +33,4 @@ To enable automatic export to Graphite (via TCP):
 
 By default stats will be aggregated over 10 seconds interval inside Centrifugo and then pushed to Graphite over TCP connection.
 
-If you need to change this aggregation interval use `graphite_interval` option (in seconds, default `10`).
+If you need to change this aggregation interval use `graphite_interval` option (in seconds, default `10`). This option available since v2.1.0

misc/release/notes.md

@@ -1,10 +1,18 @@
-**Important** If you are using `rpm` or `deb` packages from packagecloud.io then you have to re-run the [installation method of your choice](https://packagecloud.io/FZambia/centrifugo/install) for Centrifugo repository. This is required to update GPG key used. This is a standard process that all packages hosted on packagecloud should do. 
+This release contains changes in metric paths exported to Graphite, you may need to fix your dashboard when upgrading. Otherwise everything in backwards compatible.
 
 Improvements:
 
-* Redis TLS connection support - see [issue in Centrifuge lib](https://github.com/centrifugal/centrifuge/issues/23) and [updated docs](https://centrifugal.github.io/centrifugo/server/engines/#redis-engine)
-* Do not send Authorization header in admin web interface when insecure admin mode enabled - helps to protect admin interface with basic authorization (see [#240](https://github.com/centrifugal/centrifugo/issues/240))
+* Refactored export to Graphite, you can now control aggregation interval using `graphite_interval` option (in seconds), during refactoring some magical path transformation was removed so now we have more predictable path generation. Though Graphite paths changed with this refactoring
+* Web interface rewritten using modern Javascript stack - latest React, Webpack instead of Gulp, ES6 syntax 
+* Aggregated metrics also added to `info` command reply. This makes it possible to look at metrics in admin panel too when calling `info` command
+* More options can be set over environment variables – see [#254](https://github.com/centrifugal/centrifugo/issues/254)
+* Healthcheck endpoint – see [#252](https://github.com/centrifugal/centrifugo/issues/252)
+* New important chapter in docs – [integration guide](https://centrifugal.github.io/centrifugo/guide/)
+* Support setting `api_key` when using `Deploy on Heroku` button
+* Better timeout handling in Redis engine – client timeout is now bigger than default `redis_read_timeout` so application can more reliably handle errors
 
 Fixes:
 
-* Resubscribe only to shard subset of channels after reconnect to Redis ([issue](https://github.com/centrifugal/centrifuge/issues/25))
+* Dockerfile had no correct `WORKDIR` set so it was only possible to use absolute config file path, now this is fixed in [this commit](https://github.com/centrifugal/centrifugo/commit/08be85223aa849d9996c16971f9d049125ade50c) 
+* Show node version in admin web panel
+* Fix possible goroutine leak on client connection close, [commit](https://github.com/centrifugal/centrifuge/commit/a70909c2a2677932fcef0910525ea9497ff9acf2)