vpc-nat-gateway: use iptables-legacy for centos 7

Signed-off-by: zhangzujian <[email protected]>
kubeovn · Aug 22, 2024 · ab6b57c · ab6b57c
1 parent 6bfbfe8
commit ab6b57c
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diff --git a/dist/images/vpcnatgateway/Dockerfile b/dist/images/vpcnatgateway/Dockerfile
@@ -6,7 +6,7 @@ RUN set -ex \
     && apk add --no-cache \
     bash \
     iproute2 \
-    iptables \
+    iptables iptables-legacy \
     iputils \
     tcpdump \
     conntrack-tools

diff --git a/dist/images/vpcnatgateway/nat-gateway.sh b/dist/images/vpcnatgateway/nat-gateway.sh
@@ -1,5 +1,11 @@
 #!/usr/bin/env bash
 
+# use iptables-legacy for centos 7
+if iptables-legacy -t nat -S INPUT 1 2>/dev/null; then
+    alias iptables=iptables-legacy
+    alias iptables-save=iptables-legacy-save
+fi
+
 function exec_cmd() {
     cmd=${@:1:${#}}
     $cmd