Disable wifi collector by default (#1037)

* Disable wifi collector by default

Disable the wifi collector by default due to suspected cashing issues and goroutine leaks.
* https://github.com/prometheus/node_exporter/issues/870
* https://github.com/prometheus/node_exporter/issues/1008

Signed-off-by: Ben Kochie <superq@gmail.com>

CHANGELOG.md

@@ -4,6 +4,10 @@
 
 supvervisord collector reports "start_time_seconds" rather than "uptime"
 
+The wifi collector is disabled by default due to suspected caching issues and goroutine leaks.
+* https://github.com/prometheus/node_exporter/issues/870
+* https://github.com/prometheus/node_exporter/issues/1008
+
 * [CHANGE] Filter out non-installed units when collecting all systemd units #1011
 * [FEATURE] Collect NRefused property for systemd socket units (available as of systemd v239)
 * [FEATURE] Collect NRestarts property for systemd service units

collector/wifi_linux.go

@@ -45,7 +45,7 @@ var (
 )
 
 func init() {
-	registerCollector("wifi", defaultEnabled, NewWifiCollector)
+	registerCollector("wifi", defaultDisabled, NewWifiCollector)
 }
 
 var _ wifiStater = &wifi.Client{}