merging 3 files in awk based on common keys

Question

3 files:

n.txt
id-3a,oc-ctrl-jr-0,ACTIVE,-,Running,cp=172.31.0.7
id-5e,oc-ctrl-jr-1,ACTIVE,-,Running,cp=172.31.0.6
id-5f,oc-ctrl-jr-2,ACTIVE,-,Running,cp=172.