(Optional) Setting Automatic Hostname Update

After the restart, the hostname is restored to the console or the previous one. localhost in the /etc/hosts file is restored to the console name or the previous name. To prevent this problem, change the console name to be the same as the hostname.

Check methods

• In the /etc/cloud/cloud.cfg file, check whether the update_hostname and manage_etc_hosts parameters are commented out or whether the value of preserve_hostname is true.
• In Network Manager, check whether the value of hostname-mode in /etc/NetworkManager/NetworkManager.conf is set to none.
• Check whether the value of enable_preserve_hostname in the /opt/huawei/network_config/bms-network-config.conf file is True.

Commands

• Centralized BMS gateway

# Avoid the network from changing the hostname.

sed -i 's/enable_preserve_hostname = False/enable_preserve_hostname = True/g' /opt/huawei/network_config/bms-network-config.conf

# Avoid /etc/hosts from being modified after restart.

sed -i '/manage_etc_hosts/s/^/#/g' /etc/cloud/cloud.cfg

#Avoid hostname updates.

sed -i '/- update_hostname/s/^/#/g' /etc/cloud/cloud.cfg

• Distributed BMS gateway

# Avoid /etc/hosts from being modified after restart.

sed -i '/manage_etc_hosts/s/^/#/g' /etc/cloud/cloud.cfg

#Avoid hostname updates.

sed -i '/- update_hostname/s/^/#/g' /etc/cloud/cloud.cfg

# Avoid NetworkManager from changing the name.

sed -i '/\[main\]/a\hostname-mode=none' /etc/NetworkManager/NetworkManager.conf