Cannot access SolusVM Master web interface: Unable to connect

Symptoms

• Cannot access SolusVM Master web interface on fresh intsallation:

  CONFIG_TEXT: Unable to connect

• SolusVM web server fails to start:

  # systemctl start svmstack-nginx.service
  Job for svmstack-nginx.service failed because the control process exited with error code. See "systemctl status svmstack-nginx.service" and "journalctl -xe" for details.

  # tail -fn0 /var/log/svmstacknginx/error.log
  2018/08/30 06:32:22 [emerg] 920388#0: bind() to 0.0.0.0:80 failed (98: Address already in use)

• Another web server service (httpd) is running on ports 80,443:

  # netstat -tuxnlp | grep "80\|443"
  tcp6 0 0 :::80 :::* LISTEN 916813/httpd 

Cause

Most likely httpd webserver were installed on the fresh server as a part of default set of components

Resolustion

1. Connect to the server via SSH
2. Stop running httpd webserver and disable its start up on reboot:

   # systemctl stop httpd.service
   # systemctl disable httpd.service

3. Start SolusVM Master nginx-based web server:

   # systemctl start svmstack-nginx.service