Agent not work yet. Need to build Part B first

alpine/rootfs-extra/etc/init.d/control-agent

@@ -41,7 +41,6 @@ start() {
         --pidfile "$pidfile" \
         --stdout "$output_log" \
         --stderr "$error_log" \
-        --respawn \
         --respawn-delay 5 \
         --respawn-max 0 \
         -- \

clitools/pkg/cmd/agent/agent.go

@@ -10,21 +10,38 @@ import (
 	"k8s.io/apimachinery/pkg/runtime/schema"
 	"k8s.io/cli-runtime/pkg/genericclioptions"
 	"k8s.io/klog/v2"
-	monov1alpha1 "undecided.project/monok8s/pkg/apis/monok8s/v1alpha1"
+
+	types "undecided.project/monok8s/pkg/apis/monok8s/v1alpha1"
+	mkscmd "undecided.project/monok8s/pkg/cmd"
 	"undecided.project/monok8s/pkg/kube"
+	"undecided.project/monok8s/pkg/templates"
 )
 
 func NewCmdAgent(flags *genericclioptions.ConfigFlags) *cobra.Command {
 	var namespace string
+	var envFile string
+
 	cmd := &cobra.Command{
 		Use:   "agent --env-file path",
 		Short: "Watch OSUpgrade resources and do nothing for now",
 		RunE: func(cmd *cobra.Command, _ []string) error {
+
+			var cfg *types.MonoKSConfig // or value, depending on your API
+
+			if err := mkscmd.LoadEnvFile(envFile); err != nil {
+				return fmt.Errorf("load env file %q: %w", envFile, err)
+			}
+			vals := templates.LoadTemplateValuesFromEnv()
+			rendered := templates.DefaultMonoKSConfig(vals)
+			cfg = &rendered
+
+			klog.InfoS("starting init", "node", cfg.Spec.NodeName, "envFile", envFile)
+
 			clients, err := kube.NewClients(flags)
 			if err != nil {
 				return err
 			}
-			gvr := schema.GroupVersionResource{Group: monov1alpha1.Group, Version: monov1alpha1.Version, Resource: "osupgrades"}
+			gvr := schema.GroupVersionResource{Group: types.Group, Version: types.Version, Resource: "osupgrades"}
 			ctx := cmd.Context()
 			for {
 				list, err := clients.Dynamic.Resource(gvr).Namespace(namespace).List(ctx, metav1.ListOptions{})
@@ -44,6 +61,7 @@ func NewCmdAgent(flags *genericclioptions.ConfigFlags) *cobra.Command {
 		},
 	}
 	cmd.Flags().StringVar(&namespace, "namespace", "kube-system", "namespace to watch")
+	cmd.Flags().StringVar(&envFile, "env-file", "", "path to env file containing MKS_* variables")
 	return cmd
 }
 

clitools/pkg/cmd/helpers.go

@@ -0,0 +1,57 @@
+package cmd
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"strings"
+)
+
+func LoadEnvFile(path string) error {
+	f, err := os.Open(path)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	scanner := bufio.NewScanner(f)
+	lineNum := 0
+
+	for scanner.Scan() {
+		lineNum++
+		line := strings.TrimSpace(scanner.Text())
+
+		if line == "" || strings.HasPrefix(line, "#") {
+			continue
+		}
+
+		key, val, ok := strings.Cut(line, "=")
+		if !ok {
+			return fmt.Errorf("line %d: expected KEY=VALUE", lineNum)
+		}
+
+		key = strings.TrimSpace(key)
+		val = strings.TrimSpace(val)
+
+		if key == "" {
+			return fmt.Errorf("line %d: empty variable name", lineNum)
+		}
+
+		// Remove matching single or double quotes around the whole value.
+		if len(val) >= 2 {
+			if (val[0] == '"' && val[len(val)-1] == '"') || (val[0] == '\'' && val[len(val)-1] == '\'') {
+				val = val[1 : len(val)-1]
+			}
+		}
+
+		if err := os.Setenv(key, val); err != nil {
+			return fmt.Errorf("line %d: set %q: %w", lineNum, key, err)
+		}
+	}
+
+	if err := scanner.Err(); err != nil {
+		return err
+	}
+
+	return nil
+}

clitools/pkg/cmd/initcmd/init.go

@@ -1,9 +1,7 @@
 package initcmd
 
 import (
-	"bufio"
 	"fmt"
-	"os"
 	"sort"
 	"strconv"
 	"strings"
@@ -16,6 +14,7 @@ import (
 	"undecided.project/monok8s/pkg/config"
 
 	types "undecided.project/monok8s/pkg/apis/monok8s/v1alpha1"
+	mkscmd "undecided.project/monok8s/pkg/cmd"
 	"undecided.project/monok8s/pkg/templates"
 )
 
@@ -65,7 +64,7 @@ Supported formats:
 			}
 
 			if strings.TrimSpace(envFile) != "" {
-				if err := loadEnvFile(envFile); err != nil {
+				if err := mkscmd.LoadEnvFile(envFile); err != nil {
 					return fmt.Errorf("load env file %q: %w", envFile, err)
 				}
 			}
@@ -74,7 +73,7 @@ Supported formats:
 
 			switch {
 			case strings.TrimSpace(envFile) != "":
-				if err := loadEnvFile(envFile); err != nil {
+				if err := mkscmd.LoadEnvFile(envFile); err != nil {
 					return fmt.Errorf("load env file %q: %w", envFile, err)
 				}
 				vals := templates.LoadTemplateValuesFromEnv()
@@ -133,55 +132,6 @@ Supported formats:
 	return cmd
 }
 
-func loadEnvFile(path string) error {
-	f, err := os.Open(path)
-	if err != nil {
-		return err
-	}
-	defer f.Close()
-
-	scanner := bufio.NewScanner(f)
-	lineNum := 0
-
-	for scanner.Scan() {
-		lineNum++
-		line := strings.TrimSpace(scanner.Text())
-
-		if line == "" || strings.HasPrefix(line, "#") {
-			continue
-		}
-
-		key, val, ok := strings.Cut(line, "=")
-		if !ok {
-			return fmt.Errorf("line %d: expected KEY=VALUE", lineNum)
-		}
-
-		key = strings.TrimSpace(key)
-		val = strings.TrimSpace(val)
-
-		if key == "" {
-			return fmt.Errorf("line %d: empty variable name", lineNum)
-		}
-
-		// Remove matching single or double quotes around the whole value.
-		if len(val) >= 2 {
-			if (val[0] == '"' && val[len(val)-1] == '"') || (val[0] == '\'' && val[len(val)-1] == '\'') {
-				val = val[1 : len(val)-1]
-			}
-		}
-
-		if err := os.Setenv(key, val); err != nil {
-			return fmt.Errorf("line %d: set %q: %w", lineNum, key, err)
-		}
-	}
-
-	if err := scanner.Err(); err != nil {
-		return err
-	}
-
-	return nil
-}
-
 func parseStepSelection(raw string, max int) (bootstrap.StepSelection, error) {
 	raw = strings.TrimSpace(raw)
 	if raw == "" {