Use the following steps to resolve communication errors needed to successfully ping the gateway or the other nodes:
Interface Misconfiguration
Ensure that the network interface on the node is working correctly. You can check this by attempting to ping a node’s IP address from itself. This is a simple sanity check to ensure that the network stack on the node is configured and working properly.
Duplicate IP Addresses
If the IP Address that you assigned to the HyperScale node is already in use, the IP will fail to bring the interface up properly. Run the following command to confirm if there is a duplicate IP:
journalctl -xe | grep ifupIf the interface fails to come online due to a duplicate IP Address, you will see an error as shown in the following sample image:
To resolve this issue, provide a new IP address for one of the devices. The above troubleshooting error provides a MAC Address to assist your Network Administrator to identify the offending device.
Related Topic
Incorrect Port Mode
If you are configuring your network switch, the ports can be configured in either the trunk mode or the access mode. (Sometimes also known as tagged and untagged.) This manages how traffic from the connected device is routed to the appropriate VLAN. For HyperScale installations, the network ports need to be configured as access, or untagged ports. If the port is misconfigured as a trunk port, you won’t be able to ping tests between the other HyperScale nodes and/or the gateway will fail. Your Network Administrator will need to confirm the port configuration.
Incorrect VLAN
If the switch is misconfigured with the wrong VLAN, the nodes will not be able to ping the gateway; however they may be able to ping the other two HyperScale nodes on the data protection IPs. Your Network Administrator will need to verify the configuration on the network switch and confirm that the proper VLAN is set.
ICMP (ping) Blocked
In some rare cases, you may have the ICMP (the protocol used by the ping command) blocked on the gateway. This is common when the gateway is a firewall device or the HyperScale is in a high security environment. For the installation to complete, you may need to allow this traffic from the HyperScale nodes for the duration of the installation. If you have security policies that prevent this, contact your Commvault Cloud representative for assistance.