fix: smart fan unit improvements (#31)

* fix: load config from /etc/computeblade-agent

Signed-off-by: Matthias Riegler <matthias.riegler@ankorstore.com>

* fix: fan target percent reporting

Signed-off-by: Matthias Riegler <matthias.riegler@ankorstore.com>

* fix: fancontroller default config & update interval

Signed-off-by: Matthias Riegler <matthias.riegler@ankorstore.com>

* chore: update Readme

Signed-off-by: Matthias Riegler <matthias.riegler@ankorstore.com>

---------

Signed-off-by: Matthias Riegler <matthias.riegler@ankorstore.com>

cmd/agent/default-config.yaml

@@ -41,8 +41,8 @@ fan_controller:
   # For now, this is only supporting a two-step configuration.
   steps:
     - temperature: 45
-      speed: 40
+      percent: 40
     - temperature: 55
-      speed: 80
+      percent: 80
 # Critical temperature threshold
 critical_temperature_threshold: 60

cmd/agent/main.go

@@ -1,7 +1,6 @@
 package main
 
 import (
-	"bytes"
 	"context"
 	"fmt"
 	"net"
@@ -14,8 +13,6 @@ import (
 	"syscall"
 	"time"
 
-	_ "embed"
-
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 	"github.com/spf13/viper"
 	bladeapiv1alpha1 "github.com/xvzf/computeblade-agent/api/bladeapi/v1alpha1"
@@ -25,22 +22,22 @@ import (
 	"google.golang.org/grpc"
 )
 
-// embed default configuration
-
-//go:embed default-config.yaml
-var defaultConfig []byte
-
 func main() {
 	var wg sync.WaitGroup
 
 	// Setup configuration
 	viper.SetConfigType("yaml")
+
 	// auto-bind environment variables
 	viper.SetEnvPrefix("BLADE")
 	viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
 	viper.AutomaticEnv()
+	viper.SetConfigName("config")
+	viper.SetConfigType("yaml")
+	viper.AddConfigPath("/etc/computeblade-agent")
+
 	// Load potential file configs
-	if err := viper.ReadConfig(bytes.NewBuffer(defaultConfig)); err != nil {
+	if err := viper.ReadInConfig(); err != nil {
 		panic(err)
 	}