Set Up Your KVM Virtual Machine for a Remote Server Cluster

First configure the VM on the master node, and then configure the VM on each worker node.

Follow these steps to setup and configure your VM on a cluster of servers in a remote deployment:

Verify that your master node meets the VM requirements.

Resource	Minimum Requirements
Processor	Four (4) virtual CPUs
Memory	8 GB RAM
Local disk storage	64 GB
Network interface speed	1 Gb NIC
Hypervisor	KVM/QCOW (QEMU Copy on Write) image for servers running CentOS, Ubuntu, and RedHat operating systems

Confirm that the needed ports are open for communications.

You must open the following ports on your NetQ on-premises servers:

Port or Protocol Number	Protocol	Component Access
4	IP Protocol	Calico networking (IP-in-IP Protocol)
22	TCP	SSH
80	TCP	Nginx
179	TCP	Calico networking (BGP)
443	TCP	NetQ UI
2379	TCP	etcd datastore
4789	UDP	Calico networking (VxLAN)
5000	TCP	Docker registry
6443	TCP	kube-apiserver
30001	TCP	DPU communication
31980	TCP	NetQ Agent communication
31982	TCP	NetQ Agent SSL communication
32708	TCP	API Gateway

Additionally, for internal cluster communication, you must open these ports:

Port	Protocol	Component Access
8080	TCP	Admin API
5000	TCP	Docker registry
6443	TCP	Kubernetes API server
10250	TCP	kubelet health probe
2379	TCP	etcd
2380	TCP	etcd
7072	TCP	Kafka JMX monitoring
9092	TCP	Kafka client
7071	TCP	Cassandra JMX monitoring
7000	TCP	Cassandra cluster communication
9042	TCP	Cassandra client
7073	TCP	Zookeeper JMX monitoring
2888	TCP	Zookeeper cluster communication
3888	TCP	Zookeeper cluster communication
2181	TCP	Zookeeper client
36443	TCP	Kubernetes control plane

Download the NetQ Platform image.
1. On the NVIDIA Application Hub, log in to your account.
2. Select NVIDIA Licensing Portal.
3. Select Software Downloads from the menu.
4. Click Product Family and select NetQ.
5. Locate the NetQ SW 4.1 KVM Cloud image and select Download.
6. If prompted, agree to the license agreement and proceed with the download.
For enterprise customers, if you do not see a link to the NVIDIA Licensing Portal on the NVIDIA Application Hub, contact NVIDIA support.

For NVIDIA employees, download NetQ directly from the NVIDIA Licensing Portal.
Setup and configure your VM.
KVM Example Configuration

This example shows the VM setup process for a system with Libvirt and KVM/QEMU installed.
1. Confirm that the SHA256 checksum matches the one posted on the NVIDIA Application Hub to ensure the image download has not been corrupted.
```
$ sha256sum ./Downloads/netq-4.0.0-ubuntu-18.04-tscloud-qemu.qcow2
$ FE353FC06D3F843F4041D74C853D38B0A56036C5886F6233A3ED1A9464AEB783  ./Downloads/netq-4.0.0-ubuntu-18.04-tscloud-qemu.qcow2
```
2. Copy the QCOW2 image to a directory where you want to run it.
  Tip: Copy, instead of moving, the original QCOW2 image that was downloaded to avoid re-downloading it again later should you need to perform this process again.
```
$ sudo mkdir /vms
$ sudo cp ./Downloads/netq-4.0.0-ubuntu-18.04-tscloud-qemu.qcow2 /vms/ts.qcow2
```
3. Create the VM.
  For a Direct VM, where the VM uses a MACVLAN interface to sit on the host interface for its connectivity:
```
$ virt-install --name=netq_ts --vcpus=4 --memory=8192 --os-type=linux --os-variant=generic --disk path=/vms/ts.qcow2,format=qcow2,bus=virtio,cache=none --network=type=direct,source=eth0,model=virtio --import --noautoconsole
```
  Replace the disk path value with the location where the QCOW2 image is to reside. Replace network model value (eth0 in the above example) with the name of the interface where the VM is connected to the external network.
  
  Or, for a Bridged VM, where the VM attaches to a bridge which has already been setup to allow for external access:
```
$ virt-install --name=netq_ts --vcpus=4 --memory=8192 --os-type=linux --os-variant=generic \ --disk path=/vms/ts.qcow2,format=qcow2,bus=virtio,cache=none --network=bridge=br0,model=virtio --import --noautoconsole
```
  Replace network bridge value (br0 in the above example) with the name of the (pre-existing) bridge interface where the VM is connected to the external network.
  
  Make note of the name used during install as this is needed in a later step.
4. Watch the boot process in another terminal window.
```
$ virsh console netq_ts
```

Use the default credentials to log in the first time:

Username: cumulus
Password: cumulus

$ ssh cumulus@<ipaddr>
Warning: Permanently added '<ipaddr>' (ECDSA) to the list of known hosts.
Ubuntu 20.04 LTS
cumulus@<ipaddr>'s password:
You are required to change your password immediately (root enforced)
System information as of Thu Dec  3 21:35:42 UTC 2020
System load:  0.09              Processes:           120
Usage of /:   8.1% of 61.86GB   Users logged in:     0
Memory usage: 5%                IP address for eth0: <ipaddr>
Swap usage:   0%
WARNING: Your password has expired.
You must change your password now and login again!
Changing password for cumulus.
(current) UNIX password: cumulus
Enter new UNIX password:
Retype new UNIX password:
passwd: password updated successfully
Connection to <ipaddr> closed.

$ ssh cumulus@<ipaddr>
Warning: Permanently added '<ipaddr>' (ECDSA) to the list of known hosts.
Ubuntu 20.04 LTS
cumulus@<ipaddr>'s password:
  System information as of Thu Dec  3 21:35:59 UTC 2020
  System load:  0.07              Processes:           121
  Usage of /:   8.1% of 61.86GB   Users logged in:     0
  Memory usage: 5%                IP address for eth0: <ipaddr>
  Swap usage:   0%
Last login: Thu Dec  3 21:35:43 2020 from <local-ipaddr>
cumulus@ubuntu:~$

Verify the master node is ready for installation. Fix any errors indicated before installing the NetQ software.
```
cumulus@hostname:~$ sudo opta-check-cloud
```
Change the hostname for the VM from the default value.

The default hostname for the NetQ Virtual Machines is ubuntu. Change the hostname to fit your naming conventions while meeting Internet and Kubernetes naming standards.

Kubernetes requires that hostnames are composed of a sequence of labels concatenated with dots. For example, “en.wikipedia.org” is a hostname. Each label must be from 1 to 63 characters long. The entire hostname, including the delimiting dots, has a maximum of 253 ASCII characters.

The Internet standards (RFCs) for protocols specify that labels may contain only the ASCII letters a through z (in lower case), the digits 0 through 9, and the hyphen-minus character ('-').

Use the following command:
```
cumulus@hostname:~$ sudo hostnamectl set-hostname NEW_HOSTNAME
```
Add the same NEW_HOSTNAME value to /etc/hosts on your VM for the localhost entry. Example:
```
127.0.0.1 localhost NEW_HOSTNAME
```
Run the Bootstrap CLI. Be sure to replace the eth0 interface used in this example with the interface on the server used to listen for NetQ Agents.
```
cumulus@:~$ netq bootstrap master interface eth0 tarball /mnt/installables/netq-bootstrap-4.1.0.tgz
```
Allow about five to ten minutes for this to complete, and only then continue to the next step.
If this step fails for any reason, you can run netq bootstrap reset and then try again.
If you have changed the IP address or hostname of the NetQ Cloud VM after this step, you need to re-register this address with NetQ as follows:

Reset the VM.
```
cumulus@hostname:~$ netq bootstrap reset
```
Re-run the Bootstrap CLI. This example uses interface eth0. Replace this with your updated IP address, hostname or interface using the interface or ip-addr option.
```
cumulus@:~$ netq bootstrap master interface eth0 tarball /mnt/installables/netq-bootstrap-4.1.0.tgz
```
Consider the following for container environments, and make adjustments as needed.
Flannel Virtual Networks
If you are using Flannel with a container environment on your network, you may need to change its default IP address ranges if they conflict with other addresses on your network. This can only be done one time during the first installation.

The address range is 10.244.0.0/16. NetQ overrides the original Flannel default, which is 10.1.0.0/16.

To change the default address range, use the CLI with the pod-ip-range option. For example:
```
cumulus@hostname:~$ netq bootstrap master interface eth0 tarball /mnt/installables/netq-bootstrap-4.1.0.tgz pod-ip-range 10.255.0.0/16
```
Docker Default Bridge Interface
The default Docker bridge interface is disabled in NetQ. If you need to reenable the interface, contact support.
Verify that your first worker node meets the VM requirements, as described in Step 1.
Confirm that the needed ports are open for communications, as described in Step 2.
Open your hypervisor and set up the VM in the same manner as for the master node.

Make a note of the private IP address you assign to the worker node. You need it for later installation steps.
Verify the worker node is ready for installation. Fix any errors indicated before installing the NetQ software.
```
cumulus@hostname:~$ sudo opta-check-cloud
```
Run the Bootstrap CLI on the worker node.
```
cumulus@:~$ netq bootstrap worker tarball /mnt/installables/netq-bootstrap-4.0.0.tgz master-ip <master-ip>
```
Provide a password using the password option if required. Allow about five to ten minutes for this to complete, and only then continue to the next step.
If this step fails for any reason, you can run netq bootstrap reset on the new worker node and then try again.
Repeat Steps 10 through 14 for each additional worker node you want in your cluster.

The final step is to install and activate the NetQ software. You can do this using the Admin UI or the CLI.

Click the installation and activation method you want to use to complete installation:

Use the Admin UI (recommended)
Use the CLI

Set Up Your KVM Virtual Machine for a Remote Server Cluster

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