awk works just fine here.

--- plugins/node.d/ipmi_.in.orig	2020-03-24 12:31:00 UTC
+++ plugins/node.d/ipmi_.in
@@ -76,7 +76,7 @@ export CONFIG MEASURE
 
 #### Work is done in this awk script
 
-ipmitool sensor | gawk -F'|' '
+ipmitool sensor | awk -F'|' '
 BEGIN {
     FANS = "";
     TEMPS = "";
