Prepare a Node on a Tufin Appliance

Overview

This procedure is for preparing a Tufin appliance before adding it as a node to an existing TOS Aurora cluster.

For all other installation procedures, such as installing TOS Aurora and adding nodes on other platforms, see the menu for the appropriate procedure.

If you are preparing a data node, start with high availability.

If you are preparing a worker node, start with multi-node cluster.

Read and understand Prerequisites, then proceed with Set Up TufinOS

Prerequisites

General Requirements

You cannot use IP Tables. All IP tables rules will be flushed when adding the node.
Your servers must have sufficient CPUs, disk storage and main memory for TOS Aurora to work effectively. Consult with your sales engineer or Tufin support to ensure your resources or sufficient.

Tufin Appliance Requirements

Your appliance must be one of: T-800, T-1000XL, T-1100, T-1200. For more information, see Tufin Appliance Lifecycle.
Complete the preliminary set up described in the quick-start guides T-800 / T-1200 or T1000XL / T-1100.

Network Requirements

You must allow access to required Ports and Services.
If you intend to use syslog, allocate a syslog VIP on the same subnet as your primary VIP.
The node's network IP must be on the same subnet as the cluster primary VIP.
Make sure your first physical interface is correctly configured and all other interfaces are not on the same network.

To find the first network interface, run the following command:
```
[<ADMIN> ~]$ sudo /opt/tufinos/scripts/network_interface_by_pci_order.sh | awk -F'=' '/NET_IFS\[0\]/ { print $NF }'
```
sudo /opt/tufinos/scripts/network_interface_by_pci_order.sh | awk -F'=' '/NET_IFS\[0\]/ { print $NF }'
Otherwise network errors such as connectivity failures and incorrect traffic routing might occur.

Set Up TufinOS

Before you proceed, read and understand Prerequisites - this may prevent unexpected failures.

Skip any steps that have already been done when following the quick-start guides T-800 / T-1200 or T1000XL / T-1100.

Open a command line via SSH to the eth0 IP address (default: 192.168.1.100).
Login with user=tufin-admin, password=admin.

You will be prompted to set a new password.
Run the command:
```
[<ADMIN> ~]$ sudo switch-tos-mainstream
```
sudo switch-tos-mainstream
When prompted to reconfigure TufinOS, select yes. This process can run about five minutes.
Reboot the appliance and log in again as tufin-admin.
TufinOS 3.100 and later. Optional. Create a password for the root user.
1. Login as the tufin-admin user.
2. Run the following command:
```
sudo passwd root
```
  sudo passwd root
3. Enter the password and then retype it.
If you want to reset the host name or IP of the machine, do so now. Once TOS Aurora has been installed, changing the host name or IP address will require reinstalling - see Changing IP Address/Host Names. To change the host name, use the command below, replacing <mynode> with your preferred name:
```
[<ADMIN> ~]$ sudo hostnamectl set-hostname <mynode>
```
sudo hostnamectl set-hostname <mynode>
Configure the server timezone:
```
[<ADMIN> ~]$ sudo timedatectl set-timezone <timezone>
```
sudo timedatectl set-timezone <timezone>
where <timezone> is in the format Area/Location. Examples: America/Jamaica, Hongkong, GMT, Europe/Prague.

To view a list of the time-zone formats that can be used, run:
```
[<ADMIN> ~]$ sudo timedatectl list-timezones
```
sudo timedatectl list-timezones
Synchronize your machine time with a trusted NTP server. Follow the steps in Configuring NTP Using Chrony. In an HA deployment, all servers need to be synchronized to the same time.
Configure the IP address and DNS, where <Interface Name> is the name of the interface you are using (for example, ens32). If you have several network interfaces, configure the first one.
To find the first network interface
Run the command:
[<ADMIN> ~]$ sudo /opt/tufinos/scripts/network_interface_by_pci_order.sh | awk -F'=' '/NET_IFS\[0\]/ { print $NF }'
sudo /opt/tufinos/scripts/network_interface_by_pci_order.sh | awk -F'=' '/NET_IFS\[0\]/ { print $NF }'
To assign a static IP address:
1. Run the command:
2. Restart the network service.
Verify that the DNS server can resolve its own address using a reverse lookup
Run:
[<ADMIN> ~]$ sudo nslookup <DNS SERVER IP>
sudo nslookup <DNS SERVER IP>
If the name of the server is displayed, the DNS server can resolve its own address using a reverse lookup.
Example Output
```
[<ADMIN> ~]$ sudo nslookup  1.2.3.4
4.3.2.1.in-addr.arpa	name=EXAMPLE.company.com
```
If the name of the server is not displayed, set it using a reverse lookup entry at /etc/hosts.
Example Output where 1.2.3.4 4.3.2.1.in-addr-arpa was added.
```
[<ADMIN> ~]$ sudo cat /etc/hosts 
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost6 localhost6.localdomain6
1.2.3.4 admin.company.com admin
2.3.4.5 5.4.3.2.in-addr-arpa
```
Change the host name to a unique name in the cluster. Replace <mynode> with your preferred name.
```
[<ADMIN> ~]$ sudo hostnamectl set-hostname <mynode>
```
sudo hostnamectl set-hostname
Synchronize the time with the primary data node. This can be achieved by all servers being synchronized using ntpd or chrony.