原因：
before queens heat was inside horizon code, in queens and later,
heat dashboard is in a different package and need to be installed,
package name: openstack-heat-ui
解决办法是：
yum install -y openstack-heat-ui
重启服务：
systemctl restart openstack-heat*
systemctl restart httpd
Packstack 安装openstack queens版本: 在horizon里没有heat的编排目录
原文：https://www.cnblogs.com/chenpengzi/p/10160785.html