docs: align log-store docs with [log_store] TOML and pin Rust 1.94.0

README.md

@@ -29,11 +29,11 @@ This is usually only needed for developers who want to contribute to `graph-node
 
 To build and run this project, you need to have the following installed on your system:
 
-- Rust (latest stable): Follow [How to install
-  Rust](https://rust-lang.org/tools/install/). Run `rustup install
-stable` in _this directory_ to make sure all required components are
-  installed. The `graph-node` code assumes that the latest available
-  `stable` compiler is used.
+- Rust **1.94.0** (pinned in [`rust-toolchain.toml`](./rust-toolchain.toml)):
+  Follow [How to install Rust](https://rust-lang.org/tools/install/).
+  From this directory, `rustup show` / `cargo` will pick up the pinned
+  toolchain automatically. Do not use a newer `stable` until the pin is
+  lifted — see the comment in `rust-toolchain.toml`.
 - PostgreSQL: [PostgreSQL Downloads](https://www.postgresql.org/download/) lists
   downloads for almost all operating systems.
   - For OSX: We highly recommend [Postgres.app](https://postgresapp.com/).
@@ -125,15 +125,22 @@ indexing and querying needs to be split across [multiple databases](./docs/confi
 - **Disabled**: No log storage (default)
 
 **Quick example (file-based logs for local development):**
+
+Add a `[log_store]` section to your TOML config (passed with `--config`;
+there are no `--log-store-*` CLI flags or `GRAPH_LOG_STORE_*` env vars):
+
+```toml
+[log_store]
+backend = "file"
+directory = "./graph-logs"
+# retention_hours = 72   # optional; 0 keeps forever
+```
+
 ```bash
 mkdir -p ./graph-logs
 
 cargo run -p graph-node --release -- \
-  --postgres-url $POSTGRES_URL \
-  --ethereum-rpc mainnet:archive:https://... \
-  --ipfs 127.0.0.1:5001 \
-  --log-store-backend file \
-  --log-store-file-dir ./graph-logs
+  --config ./graph-node.toml
 ```
 
 Logs are queried via GraphQL at `http://localhost:8000/graphql`:
@@ -164,4 +171,4 @@ Copyright © 2018-2019 Graph Protocol, Inc. and contributors.
 
 The Graph is dual-licensed under the [MIT license](LICENSE-MIT) and the [Apache License, Version 2.0](LICENSE-APACHE).
 
-Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either expressed or implied. See the License for the specific language governing permissions and limitations under the License.
+Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either expressed or implied. See the License for the specific language governing permissions and limitations under the License.

docs/environment-variables.md

@@ -318,52 +318,26 @@ those.
 
 ## Log Store Configuration
 
-`graph-node` supports storing and querying subgraph logs through multiple backends: Elasticsearch, Loki, local files, or disabled.
+`graph-node` supports storing and querying subgraph logs through multiple backends
+(File, Elasticsearch, Loki, or disabled). **Log store settings are not controlled
+by environment variables.**
 
-**For complete log store documentation**, including detailed configuration, querying examples, and choosing the right backend, see the **[Log Store Guide](log-store.md)**.
+Configure them under a `[log_store]` section in the TOML config file passed with
+`--config` (or `GRAPH_NODE_CONFIG`). Example for local file-based logs:
 
-### Quick Reference
-
-**Backend selection:**
-- `GRAPH_LOG_STORE_BACKEND`: `disabled` (default), `elasticsearch`, `loki`, or `file`
-
-**Elasticsearch:**
-- `GRAPH_LOG_STORE_ELASTICSEARCH_URL`: Elasticsearch endpoint URL (required)
-- `GRAPH_LOG_STORE_ELASTICSEARCH_USER`: Username (optional)
-- `GRAPH_LOG_STORE_ELASTICSEARCH_PASSWORD`: Password (optional)
-- `GRAPH_LOG_STORE_ELASTICSEARCH_INDEX`: Index name (default: `subgraph`)
-
-**Loki:**
-- `GRAPH_LOG_STORE_LOKI_URL`: Loki endpoint URL (required)
-- `GRAPH_LOG_STORE_LOKI_TENANT_ID`: Tenant ID (optional)
-
-**File-based:**
-- `GRAPH_LOG_STORE_FILE_DIR`: Log directory (required)
-- `GRAPH_LOG_STORE_FILE_MAX_SIZE`: Max file size in bytes (default: 104857600 = 100MB)
-- `GRAPH_LOG_STORE_FILE_RETENTION_DAYS`: Retention period (default: 30)
-
-**Deprecated variables** (will be removed in future versions):
-- `GRAPH_ELASTICSEARCH_URL` → use `GRAPH_LOG_STORE_ELASTICSEARCH_URL`
-- `GRAPH_ELASTICSEARCH_USER` → use `GRAPH_LOG_STORE_ELASTICSEARCH_USER`
-- `GRAPH_ELASTICSEARCH_PASSWORD` → use `GRAPH_LOG_STORE_ELASTICSEARCH_PASSWORD`
-- `GRAPH_ELASTIC_SEARCH_INDEX` → use `GRAPH_LOG_STORE_ELASTICSEARCH_INDEX`
-
-### Example: File-based Logs for Local Development
+```toml
+[log_store]
+backend = "file"
+directory = "./graph-logs"
+# retention_hours = 72   # optional; 0 keeps forever
+```
 
-```bash
-mkdir -p ./graph-logs
-export GRAPH_LOG_STORE_BACKEND=file
-export GRAPH_LOG_STORE_FILE_DIR=./graph-logs
+Omit `[log_store]` (or set `backend = "disabled"`) to keep the default: logs still
+go to stdout/stderr, but are not stored for `_logs` GraphQL queries.
 
-graph-node \
-  --postgres-url postgresql://graph:pass@localhost/graph-node \
-  --ethereum-rpc mainnet:https://... \
-  --ipfs 127.0.0.1:5001
-```
+The old `--elasticsearch-*` CLI flags and `ELASTICSEARCH_*` /
+`GRAPH_ELASTICSEARCH_*` environment variables were removed in favor of
+`[log_store]` ([#6278](https://github.com/graphprotocol/graph-node/pull/6278)).
 
-See the **[Log Store Guide](log-store.md)** for:
-- Detailed configuration for all backends
-- How log stores work internally
-- GraphQL query examples
-- Choosing the right backend for your use case
-- Best practices and troubleshooting
+**For complete documentation** (backends, GraphQL examples, migration notes), see
+the **[Log Store Guide](log-store.md)**.