Interface substitution script

Signed-off-by: Lazar Cvetković <[email protected]>

Author: cvetkovic

configs/k8s_ha/check_apiserver.sh

@@ -13,7 +13,7 @@ vrrp_script check_apiserver {
 
 vrrp_instance VI_1 {
     state BACKUP
-    interface enp4s0f1
+    interface $INTERFACE_NAME
     virtual_router_id 51
     priority 101
     authentication {

configs/k8s_ha/keepalived_backup.conf

@@ -13,7 +13,7 @@ vrrp_script check_apiserver {
 
 vrrp_instance VI_1 {
     state MASTER
-    interface enp4s0f1
+    interface $INTERFACE_NAME
     virtual_router_id 51
     priority 101
     authentication {

configs/k8s_ha/keepalived_master.conf

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+readonly DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" > /dev/null 2>&1 && pwd)"
+
+export INTERFACE_NAME=$(ifconfig | grep -B1 "10.0.1" | head -n1 | sed 's/:.*//')
+
+cat $DIR/keepalived_master.conf | envsubst > $DIR/keepalived_master.conff
+cat $DIR/keepalived_backup.conf | envsubst > $DIR/keepalived_backup.conff
+
+echo "Successfully created HA load balancer configuration!"

configs/k8s_ha/substitute_interface.sh

@@ -306,13 +306,18 @@ func SetupSystem(haMode string) error {
 			return err
 		}
 
+		_, err = utils.ExecVHiveBashScript("configs/k8s_ha/substitute_interface.sh")
+		if !utils.CheckErrorWithTagAndMsg(err, "Failed to create HA load balancer !\n") {
+			return err
+		}
+
 		if haMode == "MASTER" {
-			err = utils.CopyToDir(path.Join(k8s_ha_path, "keepalived_master.conf"), "/etc/keepalived/keepalived.conf", true)
+			err = utils.CopyToDir(path.Join(k8s_ha_path, "keepalived_master.conff"), "/etc/keepalived/keepalived.conf", true)
 			if !utils.CheckErrorWithMsg(err, "Failed to copy files to /etc/keepalived/keepalived.conf!\n") {
 				return err
 			}
 		} else {
-			err = utils.CopyToDir(path.Join(k8s_ha_path, "keepalived_backup.conf"), "/etc/keepalived/keepalived.conf", true)
+			err = utils.CopyToDir(path.Join(k8s_ha_path, "keepalived_backup.conff"), "/etc/keepalived/keepalived.conf", true)
 			if !utils.CheckErrorWithMsg(err, "Failed to copy files to /etc/keepalived/keepalived.conf!\n") {
 				return err
 			}