Installing the Amlen WebUI RPM

Install the Amlen WebUI RPM. You can then use the Amlen WebUI to administer the Eclipse Amlen messaging server.

Ensure that you have root privileges and access to a yum repository so that you can use the RPM file in the .tz file to install the RPM.

Enter the following command to ensure that core files are redirected to a known location:
```
echo "/tmp/cores/bt.%e" > /proc/sys/kernel/core_pattern
```
Ensure the system has access to the prequisite software. On RHEL7/CentOS7/Fedora no action in required but on RHEL8 (and compatible distributions like AlmaLinux 8 and CentOS 8 Stream) the package openldap-servers is not available by default so It is necessary to enable the CodeReady Builder stream for RHEL (PowerTools for CentOS/AlmaLinux) or alternatively enable the symas repository (all of which contain openldap-servers).
Ensure that the current working directory is the sub-directory which contains the RPM file that you unpacked when you prepared the .tz file.

Enter the following command:

 yum --nogpgcheck localinstall -y  EclipseAmlenWebUI*.rpm

The Eclipse Amlen service uses the Systemd init system, to manage the service. As part of yum install, the Eclipse Amlen service file is installed in the Systemd configuration directory. Use the following systemctl commands to configureEclipse Amlen service for the Amlen WebUI.
1. Enable the Eclipse Amlen service, by entering the following command:
```
systemctl enable imawebui
```
2. Start the Eclipse Amlen service, by entering the following command:
```
systemctl start imawebui
```
3. Stop the Eclipse Amlen service, by entering the following command:
```
systemctl stop imawebui
```
4. Restart the Eclipse Amlen service, by entering the following command:
```
systemctl restart imawebui
```
5. Check status of the Eclipse Amlen service, by entering the following command:
```
systemctl status imawebui
```
6. Disable the Eclipse Amlen service, by entering the following command:
```
systemctl disable imawebui
```

You can log in to the Amlen WebUI and verify the installation by using a demonstration application. For more information about logging in to the Amlen WebUI, see Logging in to the Amlen WebUI. For more information about verifying the installation, see Verifying the installation of Eclipse Amlen.