network interface state to UP on system boot for kdump

sonic-net · Apr 24, 2024 · b5b2358 · b5b2358
1 parent 5c615a9
commit b5b2358
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diff --git a/build_debian.sh b/build_debian.sh
@@ -210,6 +210,10 @@ sudo chmod +x $FILESYSTEM_ROOT/etc/initramfs-tools/hooks/setfacl
 sudo cp files/initramfs-tools/arista-net $FILESYSTEM_ROOT/etc/initramfs-tools/scripts/init-premount/arista-net
 sudo chmod +x $FILESYSTEM_ROOT/etc/initramfs-tools/scripts/init-premount/arista-net
 
+# Hook into initramfs: Initialize network interfaces on boot, useful for kdump kernel image
+sudo cp files/initramfs-tools/network-interface-preboot-init $FILESYSTEM_ROOT/etc/initramfs-tools/scripts/init-premount/network-interface-preboot-init
+sudo chmod +x $FILESYSTEM_ROOT/etc/initramfs-tools/scripts/init-premount/network-interface-preboot-init
+
 # Hook into initramfs: resize root partition after migration from another NOS to SONiC on Dell switches
 sudo cp files/initramfs-tools/resize-rootfs $FILESYSTEM_ROOT/etc/initramfs-tools/scripts/init-premount/resize-rootfs
 sudo chmod +x $FILESYSTEM_ROOT/etc/initramfs-tools/scripts/init-premount/resize-rootfs

diff --git a/files/initramfs-tools/network-interface-preboot-init b/files/initramfs-tools/network-interface-preboot-init
@@ -0,0 +1,13 @@
+#!/bin/sh
+
+# Iterate over all detected network interfaces and configure them to use DHCP   
+interfaces=$(ip -o link show | awk -F': ' '{print $2}' | grep -E '^e')
+
+# Bring up each Ethernet interface
+for interface in $interfaces; do
+    ip link set dev $interface up
+    dhclient $interface
+done
+
+echo("Maigc for kdump: All interfaces have been intialized and DHCP is enabled. Can be verified by command,  \"ip addr\"")
+ip addr