Now the restart command works so should be ready for a first test.

main.go

@@ -11,6 +11,7 @@ import (
   "path"
   "path/filepath"
   "os/user"
+  "os/exec"
   "strconv"
 )
 
@@ -23,7 +24,7 @@ type Cert struct {
 type Config struct {
   Source Cert
   Target Cert
-  Reload string
+  Reload []string
   WatchDelay string
   watcher *fsnotify.Watcher
   delay_time time.Duration
@@ -130,13 +131,35 @@ func Copy(from string, to string, owner string) {
   }
 }
 
+func (cfg *Config) RunReload() {
+  exe := cfg.Reload[0]
+  args := cfg.Reload[1:]
+
+  cmd := exec.Command(exe, args...)
+
+  stdout, err := cmd.StdoutPipe()
+
+  go func() {
+    _, err := io.Copy(os.Stdout, stdout)
+
+    if err != nil {
+      log.Fatalf("Can't log output")
+    }
+  }()
+
+  err = cmd.Run()
+  if err != nil {
+    log.Fatalf("failed to run %v: %v", cfg.Reload, err)
+  }
+}
+
 func (cfg *Config) SyncCerts() {
   log.Println("SYNC CERTS CALLED")
   // copy the files, also changes ownership of target
   Copy(cfg.Source.PrivateKey, cfg.Target.PrivateKey, cfg.Target.Owner)
   Copy(cfg.Source.PublicKey, cfg.Target.PublicKey, cfg.Target.Owner)
 
-  // restart the service
+  cfg.RunReload()
 }
 
 func (cfg *Config) HandleEvents() {