diff --git a/config/config.go b/config/config.go
index c8d87c65..20fe027b 100644
--- a/config/config.go
+++ b/config/config.go
@@ -4,12 +4,9 @@ package config
 import (
 	"errors"
 	"fmt"
-	"os"
-	"path/filepath"
 	"time"
 
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"sigs.k8s.io/yaml"
 )
 
 // Config provides gpud configuration data for the server
@@ -103,37 +100,3 @@ func (config *Config) Validate() error {
 	}
 	return nil
 }
-
-func (config *Config) YAML() ([]byte, error) {
-	return yaml.Marshal(config)
-}
-
-func (config *Config) SyncYAML(file string) error {
-	if _, err := os.Stat(filepath.Dir(file)); os.IsNotExist(err) {
-		if err = os.MkdirAll(filepath.Dir(file), 0755); err != nil {
-			return err
-		}
-	}
-	data, err := config.YAML()
-	if err != nil {
-		return err
-	}
-	return os.WriteFile(file, data, 0644)
-}
-
-func LoadConfigYAML(file string) (*Config, error) {
-	data, err := os.ReadFile(file)
-	if err != nil {
-		return nil, err
-	}
-	return ParseConfigYAML(data)
-}
-
-func ParseConfigYAML(data []byte) (*Config, error) {
-	config := new(Config)
-	err := yaml.Unmarshal(data, config)
-	if err != nil {
-		return nil, err
-	}
-	return config, nil
-}
diff --git a/config/config_test.go b/config/config_test.go
index c6151947..fd5a977f 100644
--- a/config/config_test.go
+++ b/config/config_test.go
@@ -57,41 +57,3 @@ func TestConfigValidate_AutoUpdateExitCode(t *testing.T) {
 		})
 	}
 }
-
-func TestLoadConfigYAML(t *testing.T) {
-	t.Parallel()
-
-	config, err := LoadConfigYAML("testdata/test.0.yaml")
-	if err != nil {
-		t.Fatalf("failed to parse config: %v", err)
-	}
-
-	if config.Components["systemd"] == nil {
-		t.Fatalf("systemd component is nil")
-	}
-
-	b, err := config.YAML()
-	if err != nil {
-		t.Fatalf("failed to marshal config: %v", err)
-	}
-	t.Logf("config:\n%s", string(b))
-}
-
-func TestLoadConfigYAMLNull(t *testing.T) {
-	t.Parallel()
-
-	config, err := LoadConfigYAML("testdata/test.1.gpu.yaml")
-	if err != nil {
-		t.Fatalf("failed to parse config: %v", err)
-	}
-	for k, v := range config.Components {
-		if v != nil {
-			t.Errorf("key: %s, value: %v", k, v)
-		}
-	}
-	b, err := config.YAML()
-	if err != nil {
-		t.Fatalf("failed to marshal config: %v", err)
-	}
-	t.Logf("config:\n%s", string(b))
-}
diff --git a/config/op_options.go b/config/options.go
similarity index 100%
rename from config/op_options.go
rename to config/options.go
diff --git a/config/options_test.go b/config/options_test.go
new file mode 100644
index 00000000..1d4ceefe
--- /dev/null
+++ b/config/options_test.go
@@ -0,0 +1,225 @@
+package config
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestOp_ApplyOpts(t *testing.T) {
+	t.Run("empty options", func(t *testing.T) {
+		op := &Op{}
+		err := op.ApplyOpts(nil)
+		assert.NoError(t, err)
+	})
+
+	t.Run("multiple options", func(t *testing.T) {
+		op := &Op{}
+		err := op.ApplyOpts([]OpOption{
+			WithFilesToCheck("/path1", "/path2"),
+			WithKernelModulesToCheck("mod1", "mod2"),
+			WithDockerIgnoreConnectionErrors(true),
+			WithKubeletIgnoreConnectionErrors(true),
+		})
+		require.NoError(t, err)
+		assert.Equal(t, []string{"/path1", "/path2"}, op.FilesToCheck)
+		assert.Equal(t, []string{"mod1", "mod2"}, op.KernelModulesToCheck)
+		assert.True(t, op.DockerIgnoreConnectionErrors)
+		assert.True(t, op.KubeletIgnoreConnectionErrors)
+	})
+}
+
+func TestWithFilesToCheck(t *testing.T) {
+	tests := []struct {
+		name          string
+		initialFiles  []string
+		filesToAdd    []string
+		expectedFiles []string
+	}{
+		{
+			name:          "add to empty",
+			initialFiles:  nil,
+			filesToAdd:    []string{"/path1", "/path2"},
+			expectedFiles: []string{"/path1", "/path2"},
+		},
+		{
+			name:          "add to existing",
+			initialFiles:  []string{"/existing"},
+			filesToAdd:    []string{"/new1", "/new2"},
+			expectedFiles: []string{"/existing", "/new1", "/new2"},
+		},
+		{
+			name:          "empty addition",
+			initialFiles:  []string{"/existing"},
+			filesToAdd:    []string{},
+			expectedFiles: []string{"/existing"},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			op := &Op{FilesToCheck: tt.initialFiles}
+			opt := WithFilesToCheck(tt.filesToAdd...)
+			opt(op)
+			assert.Equal(t, tt.expectedFiles, op.FilesToCheck)
+		})
+	}
+}
+
+func TestWithKernelModulesToCheck(t *testing.T) {
+	tests := []struct {
+		name            string
+		initialModules  []string
+		modulesToAdd    []string
+		expectedModules []string
+	}{
+		{
+			name:            "add to empty",
+			initialModules:  nil,
+			modulesToAdd:    []string{"mod1", "mod2"},
+			expectedModules: []string{"mod1", "mod2"},
+		},
+		{
+			name:            "add to existing",
+			initialModules:  []string{"existing"},
+			modulesToAdd:    []string{"new1", "new2"},
+			expectedModules: []string{"existing", "new1", "new2"},
+		},
+		{
+			name:            "empty addition",
+			initialModules:  []string{"existing"},
+			modulesToAdd:    []string{},
+			expectedModules: []string{"existing"},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			op := &Op{KernelModulesToCheck: tt.initialModules}
+			opt := WithKernelModulesToCheck(tt.modulesToAdd...)
+			opt(op)
+			assert.Equal(t, tt.expectedModules, op.KernelModulesToCheck)
+		})
+	}
+}
+
+func TestWithDockerIgnoreConnectionErrors(t *testing.T) {
+	tests := []struct {
+		name     string
+		value    bool
+		expected bool
+	}{
+		{"set true", true, true},
+		{"set false", false, false},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			op := &Op{}
+			opt := WithDockerIgnoreConnectionErrors(tt.value)
+			opt(op)
+			assert.Equal(t, tt.expected, op.DockerIgnoreConnectionErrors)
+		})
+	}
+}
+
+func TestWithKubeletIgnoreConnectionErrors(t *testing.T) {
+	tests := []struct {
+		name     string
+		value    bool
+		expected bool
+	}{
+		{"set true", true, true},
+		{"set false", false, false},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			op := &Op{}
+			opt := WithKubeletIgnoreConnectionErrors(tt.value)
+			opt(op)
+			assert.Equal(t, tt.expected, op.KubeletIgnoreConnectionErrors)
+		})
+	}
+}
+
+func TestWithNvidiaSMICommand(t *testing.T) {
+	tests := []struct {
+		name     string
+		path     string
+		expected string
+	}{
+		{"set custom path", "/usr/local/bin/nvidia-smi", "/usr/local/bin/nvidia-smi"},
+		{"set empty path", "", ""},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			op := &Op{}
+			opt := WithNvidiaSMICommand(tt.path)
+			opt(op)
+			assert.Equal(t, tt.expected, op.NvidiaSMICommand)
+		})
+	}
+}
+
+func TestWithNvidiaSMIQueryCommand(t *testing.T) {
+	tests := []struct {
+		name     string
+		path     string
+		expected string
+	}{
+		{"set custom path", "/usr/local/bin/nvidia-smi-query", "/usr/local/bin/nvidia-smi-query"},
+		{"set empty path", "", ""},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			op := &Op{}
+			opt := WithNvidiaSMIQueryCommand(tt.path)
+			opt(op)
+			assert.Equal(t, tt.expected, op.NvidiaSMIQueryCommand)
+		})
+	}
+}
+
+func TestWithIbstatCommand(t *testing.T) {
+	tests := []struct {
+		name     string
+		path     string
+		expected string
+	}{
+		{"set custom path", "/usr/local/bin/ibstat", "/usr/local/bin/ibstat"},
+		{"set empty path", "", ""},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			op := &Op{}
+			opt := WithIbstatCommand(tt.path)
+			opt(op)
+			assert.Equal(t, tt.expected, op.IbstatCommand)
+		})
+	}
+}
+
+func TestWithInfinibandClassDirectory(t *testing.T) {
+	tests := []struct {
+		name     string
+		path     string
+		expected string
+	}{
+		{"set custom path", "/sys/class/infiniband", "/sys/class/infiniband"},
+		{"set empty path", "", ""},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			op := &Op{}
+			opt := WithInfinibandClassDirectory(tt.path)
+			opt(op)
+			assert.Equal(t, tt.expected, op.InfinibandClassDirectory)
+		})
+	}
+}