Error attempting to remove DNS registry from SRM appliance

Products

• VMware Live Recovery

Issue/Introduction

When making a DNS server entry change from the SRM VAMI, the following error message is displayed:

A general system error occurred: N7Vmacore15SystemExceptionE Failed to set hostname running
/opt/vmware/share/vami/vami_set_hostname (1)

Environment

Site Recovery Manager 8.7
Site Recovery Manager 8.6
Site Recovery Manager 8.5

Cause

The vami_config_net tool was an old tool that was used in SRM, vSphere Replication. Starting in SRM and vSphere Replication 8.8, the vami_config_net tool is deprecated. Any changes via command line to networking should be made using the netmgr command set.

Resolution

To make any networking configuration changes, use the 'netmgr' commands below:

Note: You must be logged in as root user to execute the commands below. 

To change the Hostname:
Get the system hostname.
netmgr hostname --get

Set the system hostname.
netmgr hostname --set --name <hostname>

To change DNS Servers details:
Get the list of DNS servers.
netmgr dns_servers --get

Set the DNS mode (DHCP or static) for one or more DNS servers (comma-separated list).
netmgr dns_servers --set --mode <dhcp|static> --servers <server1,server2,...>

Add a DNS server to the list of DNS servers.
netmgr dns_servers --add --servers <server>

Remove a specified DNS server from the list of DNS servers.
netmgr dns_servers --del --servers <server>

Note: When changing the list of DNS servers (for example when changing networks or decommissioning old DNS servers), it is suggested to remove the current DNS servers first, then add the new ones. This is because there is a limited number of DNS servers that can be registered to the SRM server or vSphere Replication appliance. However the first DNS server can not be deleted.

To change the ipv4 Address:
Get the IPv4 address for the specified interface
netmgr ip4_address --get --interface <ifname>

Set the IPv4 address 
netmgr ip4_address --set --interface <ifname> --mode <dhcp|static|none> --addr <ipv4_address/prefix> --gateway <gateway_address>

Below commands to be used to restart service. 
systemctl restart systemd-networkd (For network)
systemctl restart systemd-resolved  (For DNS)

 

Additional Information

Photon Network Manager Commands to update Hostname/IP Address/DNS in SRM & vSphere replication