build_iso.sh: Allow PRESEED_INTERFACE{0,1} to be defined in the yaml

It was not working for the old beaubourg machine whose interfaces named
differed.

Refs. sysadm-environment#5250

configs/build_iso.sh

@@ -43,7 +43,15 @@ CRYPTED_PASSWORD="$(echo "${PASSWORD}" | mkpasswd -s)"
 PRESEED_FILE="${BASEDIR}/configs/preseeding/${HOSTNAME}.txt"
 env CRYPTED_PASSWORD=$CRYPTED_PASSWORD j2 -f yaml -e env "${BASEDIR}/configs/preseeding/preseed.txt.j2" "${CONFIG}" >"${PRESEED_FILE}"
 
+# If not provided in the hostname configuration, fallback to the default interface
+sed -i s'/{{PRESEED_INTERFACE0}}/ens10f0np0/g' "${PRESEED_FILE}"
+sed -i s'/{{PRESEED_INTERFACE1}}/ens10f0np1/g' "${PRESEED_FILE}"
+
 FINISH_INSTALL="${BASEDIR}/configs/preseeding/finish_install/${HOSTNAME}.sh"
 j2 -f yaml -e env "${BASEDIR}/configs/preseeding/finish_install/finish_install.sh.j2" "${CONFIG}" >"${FINISH_INSTALL}"
 
+# If not provided in the hostname configuration, fallback to the default interface
+sed -i s'/{{PRESEED_INTERFACE0}}/ens10f0np0/g' "${FINISH_INSTALL}"
+sed -i s'/{{PRESEED_INTERFACE1}}/ens10f0np1/g' "${FINISH_INSTALL}"
+
 echo "Generated preseeding config in ${PRESEED_FILE} and ${FINISH_INSTALL}." 1>&2

configs/preseeding/finish_install/finish_install.sh.j2

@@ -3,8 +3,8 @@ set -e
 
 cat >/etc/systemd/network/bond0-interfaces.network <<EOF
 [Match]
-Name=ens10f0np0
-Name=ens10f1np1
+Name={{PRESEED_INTERFACE0}}
+Name={{PRESEED_INTERFACE1}}
 
 [Network]
 Bond=bond0

configs/preseeding/preseed.txt.j2

@@ -369,10 +369,10 @@ d-i finish-install/reboot_in_progress note
 d-i preseed/early_command string \
                                  anna-install net-modules-`uname -r` && \
                                  modprobe bonding mode=802.3ad miimon=100 lacp_rate=slow xmit_hash_policy=layer3+4 && \
-                                 ip l set ens10f0np0 master bond0 && \
-                                 ip l set ens10f1np1 master bond0 && \
+                                 ip l set {{PRESEED_INTERFACE0}} master bond0 && \
+                                 ip l set {{PRESEED_INTERFACE1}} master bond0 && \
                                  ip l add link bond0 name vlan{{VLAN_ID}} type vlan id {{VLAN_ID}} && \
-                                 for iface in ens10f0np0 ens10f1np1 bond0 vlan{{VLAN_ID}}; do ip l set $iface up; done && \
+                                 for iface in {{PRESEED_INTERFACE0}} {{PRESEED_INTERFACE1}} bond0 vlan{{VLAN_ID}}; do ip l set $iface up; done && \
                                  ip a add dev vlan{{VLAN_ID}} {{IPADDRESS}}/{{NETMASK}} && \
                                  ip r add default via {{GATEWAY}} && \
                                  echo {{HOSTNAME}} > /etc/hostname && \

configs/rancher-node-staging-rke2-metal01.yaml

@@ -10,6 +10,9 @@ DEPLOYMENT: staging
 SUBNET: sesi_rocquencourt_staging
 BOOT_DISK_ID_PATTERN: "wwn-0x61866da0734677001fbdcb6b0f36a29c"
 IPXE_NET: net8
+PRESEED_INTERFACE0: enp12s0f0
+PRESEED_INTERFACE1: enp12s0f1
+
 # 1 raid virtual disk (and no boot controller disk)
 # PARTMAN_METHOD: raid
 # RAID_DISKS: