[#74] Update docs

Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>

CHANGELOG.md

@@ -33,6 +33,7 @@ This document outlines major changes between releases.
 - CompleteMultipartUpload handler now sends whitespace characters to keep alive client's connection (#60)
 - Support new system attributes (#64)
 - Changed values for `frostfs_s3_gw_state_health` metric (#91)
+- Support multiple tree service endpoints (#74)
 
 ## [0.26.0] - 2022-12-28
 

config/config.env

@@ -42,8 +42,8 @@ S3_GW_CONFIG=/path/to/config/yaml
 # Logger
 S3_GW_LOGGER_LEVEL=debug
 
-# Endpoint of the tree service. Must be provided. Can be one of the node address (from the `peers` section).
-S3_GW_TREE_SERVICE=grpc://s01.frostfs.devenv:8080
+# Endpoints of the tree service. At least one endpoint must be provided. Node addresses (from the `peers` section) can be used.
+S3_GW_TREE_SERVICE=grpc://s01.frostfs.devenv:8080 grpc://s02.frostfs.devenv:8080
 
 # RPC endpoint and order of resolving of bucket names
 S3_GW_RPC_ENDPOINT=http://morph-chain.frostfs.devenv:30333/

config/config.yaml

@@ -44,9 +44,11 @@ listen_domains:
 logger:
   level: debug
 
-# Endpoint of the tree service. Must be provided. Can be one of the node address (from the `peers` section).
+# Endpoints of the tree service. At least one endpoint must be provided. Node addresses (from the `peers` section) can be used.
 tree:
-  service: node1.frostfs:8080
+  service:
+    - node1.frostfs:8080
+    - node2.frostfs:8080
 
 # RPC endpoint and order of resolving of bucket names
 rpc_endpoint: http://morph-chain.frostfs.devenv:30333

docs/configuration.md

@@ -337,14 +337,23 @@ logger:
 
 ### `tree` section
 
+```yaml
+tree:
+  service:
+   - s01.frostfs.devenv:8080
+   - s02.frostfs.devenv:8080
+```
+
+If you use only one endpoint, it can be provided as:
+
 ```yaml
 tree:
   service: s01.frostfs.devenv:8080
 ```
 
-| Parameter | Type     | Default value | Description                                                                                                |
-|-----------|----------|---------------|------------------------------------------------------------------------------------------------------------|
-| `service` | `string` |               | Endpoint of the tree service. Must be provided. Can be one of the node address (from the `peers` section). |
+| Parameter | Type       | Default value | Description                                                                                                                   |
+|-----------|------------|---------------|-------------------------------------------------------------------------------------------------------------------------------|
+| `service` | `[]string` |               | Endpoints of the tree service. At least one endpoint must be provided. Node addresses (from the `peers` section) can be used. |
 
 ### `cache` section