Private network connectivity
NetBackup Flex Scale uses Avahi to discover the nodes in the private network. When you scan for the nodes that can be added to cluster, Avahi scans the private network and displays all the detected nodes in this network.
NetBackup Flex Scale uses IP address 172.16.0.0/19 for private network NICs by default. If IP from 172.16.0.0/19 are reserved by the company, change private IP addresses to other local network addresses, such as 192.168.x.x or other subnets such as 172.20.x.x.
To check private network connectivity:
- Use SSH and log in to the node using the default administrator credentials:
username: admin
password: P@ssw0rd
- Run the support elevate command to elevate to the bash prompt.
To check if the private network is accessible, run the following command:
/opt/IMAppliance/ansible/roles/avahi/bin/mdns-config | jq
The following example shows the sample output for four nodes:
[ { "domain": "local", "hostname": "VTAS9031105", "ip": "172.1.2.3", "ipv6": "fd00::2" }, { "domain": "local", "hostname": "VTAS9031104", "ip": "172.1.2.4", "ipv6": "fd00::3" }, { "domain": "local", "hostname": "VTAS9031103", "ip": "172.1.2.5", "ipv6": "fd00::4" }, { "domain": "local", "hostname": "VTAS9031102", "ip": "172.1.2.6", "ipv6": "fd00::1" } ] - To verify all the nodes in the private network can be discovered, run the following command:
avahi-browse -d local _discovery._sub._http._tcp -rt
The following example shows the sample output. Ensure all the nodes in the private network are displayed.
site1-01:~ # avahi-browse -d local _discovery._sub._http._tcp -rt + eth4 IPv6 VTAS9031103 Web Site local + eth4 IPv6 VTAS9031104 Web Site local + eth4 IPv6 VTAS9031102 Web Site local + eth4 IPv6 VTAS9031105 Web Site local + eth4 IPv4 VTAS9031103 Web Site local + eth4 IPv4 VTAS9031104 Web Site local + eth4 IPv4 VTAS9031102 Web Site local + eth4 IPv4 VTAS9031105 Web Site local = eth4 IPv6 VTAS9031102 Web Site local hostname = [VTAS9031102.local] address = [fd00::1] port = [12345] txt = [] = eth4 IPv4 VTAS9031102 Web Site local hostname = [VTAS9031102.local] address = [172.1.2.3] port = [12345] txt = [] = eth4 IPv6 VTAS9031104 Web Site local hostname = [VTAS9031104.local] address = [fd00::3] port = [12345] txt = [] = eth4 IPv4 VTAS9031104 Web Site local hostname = [VTAS9031104.local] address = [172.1.2.4] port = [12345] txt = [] = eth4 IPv6 VTAS9031103 Web Site local hostname = [VTAS9031103.local] address = [fd00::4] port = [12345] txt = [] = eth4 IPv4 VTAS9031103 Web Site local hostname = [VTAS9031103.local] address = [172.1.2.5] port = [12345] txt = [] = eth4 IPv6 VTAS9031105 Web Site local hostname = [VTAS9031105.local] address = [fd00::2] port = [12345] txt = [] = eth4 IPv4 VTAS9031105 Web Site local hostname = [VTAS9031105.local] address = [172.1.2.6] port = [12345] txt = [] site1-01:~ #
If the 172.16.x.x IP range is restricted in the customer's environment, you must change the IP addresses assigned to the private NICs.