[release-2.7.x] Add config changes to upgrade guide (#7664)

Backport 04c7fbb from #7662

Co-authored-by: Trevor Whitney <[email protected]>

CHANGELOG.md

@@ -2,6 +2,44 @@
 
 ### All Changes
 
+#### Loki
+
+##### Enhancements
+
+* [6360](https://github.com/grafana/loki/pull/6099) **liguozhong**: Hide error message when ctx timeout occurs in s3.getObject
+* [7602](https://github.com/grafana/loki/pull/7602) **vmax**: Add decolorize filter to easily parse colored logs.
+
+##### Fixes
+
+##### Changes
+
+#### Promtail
+
+* [7602](https://github.com/grafana/loki/pull/7602) **vmax**: Add decolorize stage to Promtail to easily parse colored logs.
+
+##### Enhancements
+
+##### Fixes
+
+##### Changes
+* [7587](https://github.com/grafana/loki/pull/7587) **mar4uk**: Add go build tag `promtail_journal_enabled` to include/exclude Promtail journald code from binary.
+
+#### Fluent Bit
+
+#### Loki Canary
+
+#### Jsonnet
+
+### Notes
+
+This release was created from a branch starting at commit FIXME but it may also contain backported changes from main.
+
+Check the history of the branch FIXME.
+
+### Dependencies
+
+* Go Version: 1.19
+
 ## 2.7.0
 
 #### Loki
@@ -82,9 +120,9 @@
 
 ### Notes
 
-This release was created from a branch starting at commit FIXME but it may also contain backported changes from main.
+This release was created from a branch starting at commit `706c22e9e40b0156031f214b63dc6ed4e210abc1` but it may also contain backported changes from main.
 
-Check the history of the branch FIXME.
+Check the history of the branch `release-2.7.x`.
 
 ### Dependencies
 

docs/sources/upgrading/_index.md

@@ -104,6 +104,26 @@ The global `deletion_mode` option in the compactor configuration moved to runtim
 
 The name of this metric was changed to `loki_internal_log_messages_total` to reduce ambiguity. The previous name is still present but is deprecated.
 
+#### Usage Report  / Telemetry config has changed named
+
+The configuration for anonymous usage statistics reporting to Grafana has changed from `usage_report` to `analytics`.
+
+#### TLS `cipher_suites` and `tls_min_version` have moved
+
+These were previously configurable under `server.http_tls_config` and `server.grpc_tls_config` separately. They are now under `server.tls_cipher_suites` and `server.tls_min_version`. These values are also now configurable for individual clients, for example: `distributor.ring.etcd` or `querier.ingester_client.grpc_client_config`.
+
+#### Querier `query_timeout` default changed
+
+The previous default value for `querier.query_timeout` of `1m` has changed to `0s`.
+
+#### `ruler.storage.configdb` has been removed
+
+ConfigDB was disallowed as a Ruler storage option back in 2.0. The config struct has finally been removed.
+
+#### `ruler.remote_write.client` has been removed
+
+Can no longer specify a remote write client for the ruler.
+
 ### Promtail
 
 #### `gcp_push_target_parsing_errors_total` has a new `reason` label