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+<!-- WARNING: This file is generated by fetch_docs.js using /home/boron/Documents/AGL/docs-webtemplate/site/_data/tocs/devguides/master/xds-docs-guides-devguides-book.yml -->
+
+# Configuration
+
+`xds-server` configuration is driven by a JSON config file (`server-config.json`).
+
+Here is the logic to determine which `server-config.json` file will be used:
+
+1. from command line option: `--config myConfig.json`
+1. `$HOME/.xds/server/server-config.json` file
+1. `/etc/xds/server/server-config.json` file
+1. `<xds-server executable dir>/server-config.json` file
+
+Supported fields in configuration file are:
+
+- **httpPort** : HTTP port of client webapp/REST API
+- **webAppDir** : location of client web application (default: webapp/dist)
+- **shareRootDir** : root directory where projects will be copied
+- **logsDir**  : directory to store logs (eg. syncthing output)
+- **sdkScriptsDir** : directory where scripts, used to managed SDKs, are installed
+- **sdkDbUpdate** : define how SDK database(s) is(are) updated, supported values are:
+  `disable`, `startup` (default: `startup`)
+- **syncthing.binDir** : syncthing binaries directory (default: executable directory)
+- **syncthing.home"** : syncthing home directory (usually .../syncthing-config)
+- **syncthing.gui-address** : syncthing gui url (default <http://localhost:8385>)
+- **syncthing.gui-apikey** : syncthing api-key to use (default auto-generated)
+
+All fields are optional and example below corresponds to the default values.
+
+```json
+{
+    "httpPort": 8000,
+    "webAppDir": "webapp/dist",
+    "shareRootDir": "${HOME}/.xds/server/projects",
+    "logsDir": "/tmp/logs",
+    "sdkScriptsDir": "${EXEPATH}/scripts/sdks",
+    "sdkDbUpdate": "startup",
+    "syncthing": {
+        "binDir": "./bin",
+        "home": "${HOME}/.xds/server/syncthing-config",
+        "gui-address": "http://localhost:8385",
+        "gui-apikey": "123456789",
+    }
+}
+```
+
+>**Notes:**
+>
+>Environment variables are supported by using `${MY_VAR}` syntax.
+>
+
+When `xds-server` is started as a systemd service, default environment variables
+are set into `/etc/default/xds-server` file.
+
+`xds-server` configuration is also driven by a JSON config file (`server-config.json`),
+and default JSON config is `/etc/xds/server/server-config.json`.
+
+<!-- section-note -->
+**Note:**
+You can use your own JSON config by settings `APP_CONFIG` variable of
+`/etc/default/xds-server` file to your file, for example `/home/MYUSER/.xds/server/server-config.json`
+<!-- end-section-note -->
+
+## Disable syncthing
+
+`CloudSync` synchronization type based on `syncthing` tool can be disabled by
+simply removing (or renaming) `"syncthing"` key in configuration file.
+Here is a JSON configuration file example where syncthing key as been renamed:
+
+```json
+{
+    "httpPort": 8000,
+    "webAppDir": "webapp/dist",
+    "shareRootDir": "${HOME}/.xds/server/projects",
+    "logsDir": "/tmp/logs",
+    "sdkScriptsDir": "${EXEPATH}/scripts/sdks",
+    "syncthing_DISABLE": {
+        "binDir": "./bin",
+        "home": "${HOME}/.xds/server/syncthing-config",
+    }
+}
+```
+
+On benefit to do that is to increase XDS-Server startup time.
+
+<!-- section-note -->
+**Note:**
+
+- `CloudSync` (AKA syncthing) synchronization type can also be disabled when `"syncthing"` key is not defined in JSON configuration file.
+
+<!-- end-section-note -->