vSphere VCSA 手动刷新DNS

在修改ESXI DNS A记录时，VCSA可能遇到DNS解析延时的问题。此时需要更新DNS

root@vc [ ~ ]# ping esx-arm.tech.com
PING esx-arm.tech.com (192.168.1.128) 56(84) bytes of data.

ssh登陆VCSA，执行以下命令即可：

root@vc [ ~ ]# systemctl restart systemd-resolved.service

root@vc [ ~ ]# systemctl restart dnsmasq

更新后，DNS解析正常

root@vc [ ~ ]# ping esx-arm.tech.com
PING esx-arm.tech.com (192.168.1.199) 56(84) bytes of data.
64 bytes from esx-arm.tech.com (192.168.1.199): icmp_seq=1 ttl=64 time=0.847 ms
64 bytes from esx-arm.tech.com (192.168.1.199): icmp_seq=2 ttl=64 time=0.381 ms