luci/applications/luci-app-keepalived/root/usr/share/rpcd/acl.d/luci-app-keepalived.json

{
	"luci-app-keepalived" : {
		"description" : "Grant access to LuCI app keepalived",
		"read" : {
			"ubus" : {
				"keepalived" : [ "*" ]
			},
			"uci": [ "keepalived" ],
			"file": {
				"/etc/keepalived.user": [ "read" ]
			}
		},
		"write" : {
			"uci": [ "keepalived" ],
			"file" : {
				"/etc/keepalived/keys/*" : [ "write" ],
				"/etc/keepalived.user": [ "write" ]
			}
		}
	}
}