Install and Configure the Witness on a Linux server

Download the Witness software from InfoSight.

NOTE: Installing the Witness on a Linux server is just one option for enabling ASO. If you prefer not to maintain a separate Linux Server, you can elect to run the Witness in a virtual machine. The Witness must be on the same management subnet as the arrays.

To install an configure the Witness on a Linux server, complete the the following steps:

Install the Witness software on a CentOS V7.7.x server.
```
yum -y install /root/<hpe-alletra-witness-software>.rpm
```
A service called nimble-witnessd.service is created.
Enable the Witness process to automatically start when the system boots.
```
systemctl enable nimble-witnessd.service
```
Start the Witness process.
```
systemctl start nimble-witnessd.service
```
Display the status of the Witness process.
```
systemctl status nimble-witnessd.service
```
A a message appears stating that the Witness is enabled. The port number that the process is running on is also displayed, which you may need to configure your firewall.
Create a user and password for the Witness.
```
useradd <witness_user_name>
```
```
passwd <witness_password>
```
The Witness is now configured. You can now set up and enable the Witness.