Troubleshooting Installation on RHEL

This section details the steps you can take if the installation process fails.

If the installation process fails, there are some common issues you can check.

If the RHEL7 installation command does not work, try running the RHEL6 command.
Check the Xpress user can access Java Home and run the java command.
Check SELinux. This should be set to permissive:
```
sudo getenforce
```
If this is set to Enforcing then edit the file /etc/selinux/config and set SELINUX=permissive. Then run sudo setenforce 0.
If the following error is displayed:
```
mkdir: cannot create directory ‘/tmp’: Permission denied.
```
Make sure the xpress user can write to /tmp.