启动时，某些较旧的Ubuntu 16.04实例可能显示以下警告：
**************************************************************************
# This system is using the EC2 Metadata Service, but does not appear to #
# be running on Amazon EC2 or one of cloud-init's known platforms that #
# provide a EC2 Metadata service. In the future, cloud-init may stop #
# reading metadata from the EC2 Metadata Service unless the platform can #
# be identified. #
# #
# If you are seeing this message, please file a bug against #
# cloud-init at #
# https://bugs.launchpad.net/cloud-init/+filebug?field.tags=dsid #
# Make sure to include the cloud provider your instance is #
# running on. #
# #
# For more information see #
# https://bugs.launchpad.net/bugs/1660385 #
# #
# After you have filed a bug, you can disable this warning by #
# launching your instance with the cloud-config below, or #
# putting that content into #
# /etc/cloud/cloud.cfg.d/99-ec2-datasource.cfg #
# #
# #cloud-config #
# datasource: #
# Ec2: #
# strict_id: false #
**************************************************************************发生这种情况是由于Ubuntu对cloud-init进行了更改。详细信息可以在这里找到。
Vultr实例曾经使用cloud-init来执行一些初始设置任务，但我们在2016年末停止使用该程序进行新部署。如果您使用的是2016年创建的快照或从2016年开始运行Ubuntu 16.04实例，则可能仍然已安装cloud-init。
有几种解决警告的方法：
- 如果您从经常部署的快照中看到警告，建议您从全新安装中重新创建快照。
- 如果您在运行实例上看到警告，建议您使用删除cloud-init
apt-get remove cloud-init。 - 如果您依赖cloud-init，则可以按照错误消息末尾记录的说明来禁止显示此消息。
