"HTTP 403" Displayed During Keystone Service Installation

Symptom

The Keystone service cannot be created using OpenStack commands, and the message "Forbidden (HTTP 403)" is displayed.

Key Process and Cause Analysis

The firewall blocks access.

Conclusion and Solution

Run the following commands to add port 80 and then disable the firewall.

iptables -I INPUT -p tcp --dport 80 -j ACCEPT
firewall-cmd --zone=public --add-port=80/tcp --permanent
firewall-cmd --reload
systemctl stop firewalld.service
systemctl disable firewalld.service