今天安装VCSA 6.7时连续两次安装失败，耗费了几个小时的等待时间。第三次安装时时间同步选项选择与ESXi主机同步，很快就配置完成了。查阅官方的已知问题列表，有这一项：
- When using the VCSA Installer Time Sync option, you must connect the target ESX to the NTP server in the Time & Date Setting from the ESX ManagementIf you want to select Time Sync with NTP server from the VCSA Installer->Stage2->Appliance configuration->Time Sync option (ESX/NTP server), you also need to have the target ESX already connected to NTP server in the Time&Date Setting from the ESX Management, otherwise it'll fail in installation.Workaround:
- Set the Time Sync option in stage2->Appliance configuration to sync with ESX
- Set the Time Sync option in stage2->Appliance configuration to sync with NTP Servers, make sure both the ESX and VC are set to connect to NTP servers.
简单点说就是，VCSA 6.7 安装时的第二阶段配置时，时间同步选项要么选择与VCSA所在的ESXi主机同步，要么设置为与NTP服务器同步，同时预先把ESXi主机的时间设置为与NTP服务器同步。