Symptoms:
Update option values: A general system error occurred: Internal error message

/var/log/hostd.log
[Originator@6876 sub=Hostsvc.SyslogConfigProvider opID=101d0a8-2f-0cb2 sid=52e2a97b user=vpxuser:domain\user] Failed to set global syslog configuration : Failed to resolve remote host hostname.domain.com.
[Originator@6876sub=AdapterServer opID=101d0a8-2f-0cb2 sid=52e2a97b user=vpxuser:domain\user] AdapterServer caught exception;
<<52e2a97b-5253-20e1-9672-0a5dafdebb5d, <TCP '127.0.0.1 : 8307'>, <TCP '127.0.0.1 : 11375'>>, ha-adv-options, vim.option.OptionManager.updateValues, <vim.version.v8_0_2_0, internal, 8.0.2.0>,
[N11HostdCommon18VmomiAdapterServer19ActivationResponderE:0x0000006bc1782ee8]>, N5Vmomi5Fault11SystemError9ExceptionE(Fault cause:
vmodl.fault.SystemError
--> )
-->
[Originator@6876 sub=Vimsvc.TaskManager opID=101d0a8-2f-0cb2 sid=52e2a97b user=vpxuser:domain\user] Task Completed : haTask-ha-host-vim.option.OptionManager.updateValues-xxxxxx Status error
[Originator@6876 sub=Solo.Vmomi opID=101d0a8-2f-0cb2 user=vpxuser] Throw vmodl.fault.SystemError
[Originator@6876 sub=Solo.Vmomi opID=101d0a8-2f-0cb2 user=vpxuser] Result:
--> (vmodl.fault.SystemError) {
--> reason = "Internal error",
--> msg = "",
VMware Cloud Foundation
VMware vSphere ESXi
VMware vCenter Server
Issue is related with an incorrect DNS resolution of the configured syslog server on the affected host(s).
Check ESXi DNS configuration:
Identifying issues with and setting up DNS name resolution on ESXi Server