If you plan to use KVM as a transport node or as a host for NSX Manager guest VM, but you do not already have a KVM setup, you can use the procedure described here.
- (Only RHEL) Open the /etc/yum.conf file.
- Search for the line exclude.
- Add the line
"kernel* redhat-release*"to configure YUM to avoid any unsupported RHEL upgrades.
exclude=[existing list] kernel* redhat-release*
If you plan to run NSX-T Data Center Container Plug-in, which has specific compatibility requirements, exclude the container-related modules as well.
The supported RHEL versions are 7.4. and 7.5.
exclude=[existing list] kernel* redhat-release* kubelet-* kubeadm-* kubectl-* docker-*
- Install KVM and bridge utilities.
Linux Distribution Commands Ubuntu
apt-get install -y qemu-kvm libvirt-bin ubuntu-vm-builder bridge-utils virtinst virt-manager virt-viewer libguestfs-tools
RHEL or CentOS Linux
yum groupinstall "Virtualization Hypervisor" yum groupinstall "Virtualization Client" yum groupinstall "Virtualization Platform" yum groupinstall "Virtualization Tools"
SUSE Linux Enterprise Server Start YaSt and select.
YaSt allows you to automatically enable and configure the network bridge.
- For NSX manager to automatically install NSX software packages on KVM host, prepare the network configuration of the uplink/data interface.
The KVM host can have multiple network interfaces. For the network interface that you plan to provide as an uplink interface (data interface) for NSX-T purposes, it is important to have network configuration files correctly populated. NSX-T looks at these network configuration files to create NSX-T specific network devices. On Ubuntu, populate /etc/network/interfaces file. On RHEL, CentOS, or SUSE, populate the /etc/sysconfig/network-scripts/ifcfg-$uplinkdevice file.
In the following examples, interface "ens32" is the uplink device (data interface). Depending on your deployment environment, this interface can use DHCP or static IP settings.Note: Interface names might vary in different environments.Important: For Ubuntu, all network configurations must be specified in /etc/network/interfaces. Do not create individual network configuration files such as /etc/network/ifcfg-eth1, which can lead to failure of transport node creation.
Linux Distribution Network Configuration Ubuntu
auto eth0 iface eth0 inet manual auto ens32 iface ens32 inet manual
RHEL or CentOS Linux
DEVICE="ens32" TYPE="Ethernet" NAME="ens32" UUID="<something>" BOOTPROTO="none" HWADDR="<something>" ONBOOT="yes" NM_CONTROLLED="no"
SUSE Linux Enterprise Server
If a SLES host already exists, verify that data interfaces is already configured on the host.
If you do not have a pre-configured SLES host, see the reference configuration for the management and data interface.
DEVICE="ens32" NAME="ens32" UUID="<UUID>" BOOTPROTO="none" LLADDR="<HWADDR>" STARTMODE="yes"
- Restart networking service systemctl restart network or reboot the Linux server for the networking changes take effect.
- After the KVM host is configured as a transport node, the bridge interface 'nsx-vtep0.0' is automatically created by NSX-T.
In Ubuntu, the /etc/network/interfaces file has entries such as the following:
iface nsx-vtep0.0 inet static pre-up ip addr flush dev nsx-vtep0.0 address <IP_pool_address> netmask <subnet_mask> mtu 1600 down ifconfig nsx-vtep0.0 down up ifconfig nsx-vtep0.0 up
In RHEL, the host NSX agent (nsxa) creates a configuration file named ifcfg-nsx-vtep0.0 that has entries such as the following:
DEVICE=nsx-vtep0.0 BOOTPROTO=static NETMASK=<IP address> IPADDR=<subnet mask> MTU=1600 ONBOOT=yes USERCTL=no NM_CONTROLLED=no
DEVICE=nsx-vtep0.0 BOOTPROTO=static NETMASK=255.255.255.0 IPADDR=192.168.13.119 MACADDR=ae:9d:b7:ca:20:4a MTU=1600 USERCTL=no STARTMODE=auto
- Configure the syslog rotation policy as time-based instead of size-based policy. With a size-based syslog rotation policy, the log files generated might be of very large sizes.