# Troubleshooting IBM Installations¶

## Opening Port 12345¶

For default IBM Power9 systems with RHEL 7 installed, be sure to open port 12345 in the firewall. For example:

firewall-cmd --zone=public --add-port=12345/tcp —permanent
firewall-cmd --reload


## Growing the Disk¶

Some users may find it necessary to grow their disk. An example describing how to add disk space to a virtual machine is available at https://www.geoffstratton.com/expand-hard-disk-ubuntu-lvm. The steps for an IBM Power9 system with RHEL 7 would be similar.