Linux installation troubleshooting v13
Difficulty Displaying Java-based Applications
If you encounter difficulty displaying Java-based server features (controls or text not being displayed correctly, or blank windows), upgrading to the latest libxcb-xlib libraries should correct the problem on most distributions. Please visit the following link for other possible work-arounds:
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6532373
The Installation Fails to Complete Due to Existing data Directory Contents
If an installation fails to complete due to an existing content in the data directory, the server will write an error message to the server logs:
A data directory is neither empty, or a recognisable data directory.
If you encounter a similar message, you should confirm that the data directory is empty; the presence of files (including the system-generated lost+found folder) will prevent the installation from completing. Either remove the files from the data directory, or specify a different location for the data directory before re-invoking the installer to complete the installation.
Difficulty Installing the EPEL Release Package
If you encounter difficulty when installing the EPEL release package, you can use the following command to install the epel-release package on RHEL/CentOS 7.x and RHEL/Rocky Linux/AlmaLinux 8.x:
yum -y install https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm dnf -y install https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
Please note that you may need to enable the [extras] repository definition in the CentOS-Base.repo file (located in /etc/yum.repos.d). If yum cannot access a repository that contains epel-release, you will get an error message:
No package epel available. Error: Nothing to do
If you receive this error, you can download the EPEL rpm package, and install it manually. To manually install EPEL, download the rpm package, assume superuser privileges, navigate into the directory that contains the package, and install EPEL with the command:
yum -y install epel-release dnf -y install epel-release