diff --git a/internal/config/config.go b/internal/config/config.go
index ba8f066..1c801cd 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -2,8 +2,11 @@ package config
 
 import (
 	"encoding/base64"
+	"fmt"
 	"os"
+	"strconv"
 	"sync"
+
 	"github.com/mrlhansen/idrac_exporter/internal/logging"
 	"gopkg.in/yaml.v2"
 )
@@ -17,9 +20,9 @@ type HostConfig struct {
 
 type RootConfig struct {
 	mutex         sync.Mutex
-	Address       string                 `yaml:"address"`
-	Port          uint                   `yaml:"port"`
-	MetricsPrefix string                 `yaml:"metrics_prefix"`
+	Address       string `yaml:"address"`
+	Port          uint   `yaml:"port"`
+	MetricsPrefix string `yaml:"metrics_prefix"`
 	Collect       struct {
 		System  bool `yaml:"system"`
 		Sensors bool `yaml:"sensors"`
@@ -28,9 +31,29 @@ type RootConfig struct {
 		Storage bool `yaml:"storage"`
 		Memory  bool `yaml:"memory"`
 	} `yaml:"metrics"`
-	Timeout       uint                   `yaml:"timeout"`
-	Retries       uint                   `yaml:"retries"`
-	Hosts         map[string]*HostConfig `yaml:"hosts"`
+	Timeout uint                   `yaml:"timeout"`
+	Retries uint                   `yaml:"retries"`
+	Hosts   map[string]*HostConfig `yaml:"hosts"`
+}
+
+func getEnv(envvar string, defvalue string) string {
+	value := os.Getenv(envvar)
+	if len(value) == 0 {
+		return defvalue
+	}
+	return value
+}
+
+func getEnvUint(envvar string, defvalue uint) uint {
+	value, err := strconv.Atoi(getEnv(envvar, fmt.Sprint(defvalue)))
+	if err != nil {
+		logging.Fatalf("Failed parse integer value: %s", err)
+	}
+	if value == 0 {
+		return defvalue
+	}
+
+	return uint(value)
 }
 
 func (config *RootConfig) GetHostCfg(target string) *HostConfig {
@@ -70,29 +93,29 @@ func ReadConfigFile(fileName string) {
 	}
 
 	if Config.Address == "" {
-		Config.Address = "0.0.0.0"
+		Config.Address = getEnv("IDRAC_EXPORTER_LISTEN_ADDRESS", "0.0.0.0")
 	}
 
 	if Config.Port == 0 {
-		Config.Port = 9348
+		Config.Port = getEnvUint("IDRAC_EXPORTER_LISTEN_PORT", 9348)
 	}
 
 	if Config.Timeout == 0 {
-		Config.Timeout = 10
+		Config.Timeout = getEnvUint("IDRAC_EXPORTER_TIMEOUT", 10)
 	}
 
 	if Config.Retries == 0 {
-		Config.Retries = 1
+		Config.Retries = getEnvUint("IDRAC_EXPORTER_RETRIES", 1)
+	}
+
+	if Config.MetricsPrefix == "" {
+		Config.MetricsPrefix = getEnv("IDRAC_EXPORTER_PREFIX", "idrac")
 	}
 
 	if len(Config.Hosts) == 0 {
 		parseError("missing section", "hosts")
 	}
 
-	if Config.MetricsPrefix == "" {
-		Config.MetricsPrefix = "idrac"
-	}
-
 	for k, v := range Config.Hosts {
 		if v.Username == "" {
 			parseError("missing username for host", k)