feat: be able to give several anchors comma-separeted

cmd/hepto/config.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"net/netip"
 	"os"
+	"strings"
 
 	"github.com/go-logr/logr"
 	"github.com/go-logr/zapr"
@@ -62,10 +63,15 @@ func (c *Config) FlagSet() *flag.FlagSet {
 		return err
 	})
 	fs.IntVar(&config.Cluster.DiscoveryPort, "discovery-port", 7123, "TCP port used for discovery")
-	fs.Func("anchor", "IP address or name of an another cluster node", func(raw string) error {
-		ip, err := netip.ParseAddr(raw)
-		config.Cluster.Anchors = append(config.Cluster.Anchors, ip.String())
-		return err
+	fs.Func("anchor", "IP addresses or FQDNs separated by commas for other cluster nodes", func(anchors string) error {
+		for _, raw := range strings.Split(anchors, ",") {
+			ip, err := netip.ParseAddr(raw)
+			if err != nil {
+				return err
+			}
+			config.Cluster.Anchors = append(config.Cluster.Anchors, ip.String())
+		}
+		return nil
 	})
 	// Container settings
 	fs.StringVar(&config.Iface.Master, "iface", "", "Master network interface")