From 3a691dd81a50d45f08a1c7a1a484667dbd207e4c Mon Sep 17 00:00:00 2001
From: kaiyou <dev@kaiyou.fr>
Date: Sun, 12 Mar 2023 13:33:30 +0100
Subject: [PATCH] Load most common kernel modules on startup
---
cmd/hepto/service.go | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/cmd/hepto/service.go b/cmd/hepto/service.go
index 028752b..5d36efa 100644
--- a/cmd/hepto/service.go
+++ b/cmd/hepto/service.go
@@ -4,6 +4,7 @@ import (
"fmt"
"net"
"os"
+ "os/exec"
"path"
"time"
@@ -51,6 +52,26 @@ var Start = &cobra.Command{
return err
}
}
+ // Load useful kernel modules for later operations
+ // This uses exec at the moment, which is undesireable in case hepto is used in a very
+ // limited environment
+ desiredModules := []string{
+ "nf_conntrack", // Required by most CNI
+ "ip6_tables", // Required by kube-router, kube-proxy, Calico, and even Cilium
+ "ip6table_filter",
+ "ip6table_nat",
+ "ip6table_mangle",
+ "ip_tables", // Not used since hepto is IPv6 only, but required by most CNI
+ "iptable_filter",
+ "iptable_nat",
+ "iptable_mangle",
+ }
+ for _, mod := range desiredModules {
+ err := exec.Command("modprobe", "--", mod).Run()
+ if err != nil {
+ return err
+ }
+ }
return nil
},
RunE: func(cmd *cobra.Command, args []string) error {
--
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