Add logger page

source/_components/logger.markdown

@@ -0,0 +1,51 @@
+---
+layout: component
+title: "Logger"
+description: "Instructions how to enable the logger component for Home Assistant."
+date: 2015-11-12 17:00
+sidebar: true
+comments: false
+sharing: true
+footer: true
+ha_category: "Other"
+---
+
+The logger component let one define the level of logging activities in Home Assistant.
+
+To enable the logger in your installation, add the following to your `configuration.yaml` file:
+
+By default log all messages and ignore log event lowest than critical for custom omponents.
+
+```yaml
+# Example configuration.yaml entry
+logger:
+  default: info
+  logs:
+    homeassistant.components.device_tracker: critical
+    homeassistant.components.camera: critical
+```
+
+By default ignore all messages lowest than critical and log event for custom components.
+
+```yaml
+# Example configuration.yaml entry
+logger:
+  default: critical
+  logs:
+    homeassistant.components: info
+    homeassistant.components.rfxtrx: debug
+    homeassistant.components.device_tracker: critical
+    homeassistant.components.camera: critical
+```
+
+Possible log severities are:
+
+- citical
+- fatal
+- error
+- warning
+- warn
+- info
+- debug
+- notset
+