云平台官方提供的 Linux 映像使用 NetworkManager 来自动化云服务器的网络配置, 其默认配置是通过 DHCP 方式来获取 IP 地址,你需要保证 NetworkManager 相关的 daemon 正常运行。 如果工作不正常,你可以手动重启:

RHEL/CentOS

# service NetworkManager restart

Fedora

# systemctl restart NetworkManager

Debian

# service network-manager restart

Ubuntu

# service network-manager restart

必要时,你可能需要重启 messagebus daemon 后才能正常启动 NetworkManager:

RHEL/CentOS

# service messagebus restart
# service NetworkManager restart

Fedora

# systemctl restart messagebus
# systemctl restart NetworkManager

Debian

# service messagebus restart
# service network-manager restart

Ubuntu

# service dbus restart
# service network-manager restart