Installing the Opmantek VM
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1. Download the Opmantek Virtual Machine
If you haven’t already, hit the download button above and download the Opmantek Virtual Machine.
The virtual machine comes as an uncompressed .ova (Open Virtual Appliance) package, just over 1GB in size. Unless you have specific needs, we recommend you download the latest build.
2. Open your hypervisor
A hypervisor is a piece of software used to run virtual machines. Opmantek provides instructions for running our Virtual Machine on most popular hypervisors—but if you’ve never used a hypervisor before, we recommend the free VirtualBox solution, which you can download here.
3. Deploy the Opmantek Virtual Machine
The specific method of deploying the Opmantek Virtual Machine depends on your hypervisor. This page offers installation guides for VirtualBox and VMware Desktop Applications.
If you are deploying on another hypervisor, please use the appropriate guide:
If you have the VM already deployed you can jump to the next section – here.
3a. Deploy on VMware
Go to File –> Open and select the Opmantek Virtual Machine .ova package you just downloaded. The Virtual Machine should import with all settings automatically.
Ensure that you have granted Accessibility permissions in System Preferences for VMware to allow the Virtual Machine to run properly.
4. Run the Virtual Machine
Now that you’re all set up, you’re ready to run the Virtual Machine. In VMWare’s Desktop applications, this is done by pressing the triangular “Play” button.
You can jump to the next step here.
3b. Deploy on VirtualBox
This guide shows screenshots of the macOS version of VirtualBox (6.1). For Windows and Linux equivalent screenshots, please visit the Opmantek Wiki here.
In VirtualBox, go to File>Import Appliance, and then select the Opmantek Virtual Machine .ova package you just downloaded. Select the Opmantek Virtual Machine once it’s loaded into the left sidebar of the application. Then, click on the yellow “Settings” cog. You will need to change four separate settings to allow the Opmantek Virtual Machine to run correctly. The first setting we’ll change can be found under the System tab. You need to ensure that the hardware clock is in UTC time, as below:
Second, select Display settings, and ensure you have allocated at least 16MB of Video Memory, and that the Graphics Controller is set to “VMSVGA”, as below:
Then, select Storage settings, and ensure that “Use Host I/O Cache” is selected, as below:
Finally, select Network settings, and ensure that Adapter 1 is attached to “Bridged Adaptor”, as below:
4. Run the Virtual Machine
Now that you’re all set up, you’re ready to run the Virtual Machine. In VirtualBox, this can be done by clicking the green start arrow.
If the text is too small to read, go to Virtual Box’s View settings and select Scaled Mode, which will allow you to resize the window to your preference.
Please note that when you click within the Virtual Machine, your cursor will disappear and you will not be able to interact with your OS until you press the Host key on your keyboard. By default this key is set to Left Command ⌘ on Mac, <<<>>> on Windows, and <<<>>> on Linux.
5. Log in to the Opmantek Virtual Machine
Congratulations! You should now be running the Opmantek Virtual Machine. You’re almost there. The login screen should have loaded in the Virtual Machine.
The authentication credentials are as follows:
Enter these details as prompted to initialise the Virtual Machine.
You will see the IP address displayed.
The default hostname for the virtual machine is omk-vm9-centos7.
6. Access the Opmantek Virtual Machine
You’re now ready to access the Virtual Machine! Simply enter the inet IP address from the previous step into your browser, and you should be greeted by the Applications Homepage, like below:
You have set up the Opmantek Virtual Machine. The next part of this guide will take you through the Virtual Machine’s brief configuration process—and then you’ll be ready to start working with our software.
1. Download, Install and Run.
If you haven’t already, hit the download button above and download the Opmantek Virtual Machine. Go to the URL http://
2. Add Nodes to your network
Click Add Nodes on the left side menu and you will be prompted to log in. The default credentials are: Username: nmis Password: nm1888
The localhost node will have been added by default.
Click the blue + icon to add a node.
You can set a custom name for any node, and enter the IP address, SNMP type and SNMP community. There are also lists of select Locations and Groups which you can use to classify your nodes. If you don’t see an appropriate Group or Location, don’t worry—you can customise these lists later. Try adding your router first, and then repeat these steps for as many nodes as you would like.
You are now monitoring nodes on your network!
Now you can select NMIS or opCharts and view the data you need to effectively monitor the devices on your network.
For more detailed information on configuring the applications on the VM, please see the Opmantek Wiki.
Good news! Each of Opmantek’s software modules (excluding opFlow) offer a free time-unlimited 20-node licence. The first time you open each program, you will be given the opportunity to activate a free licence.
Time-limited trials are also available if you want to test the software on a larger network, and licences for running Opmantek’s software modules on larger networks are available on our site.
Once you’re done with our three-part Getting Started Guide, you’re all ready to get started with Opmantek’s software suite.