I upgraded the ESXi 7.0u1c version.
Recently, my ESXi host always shuts down by itself. Check the log as follows
2021-04-18T11:26:11Z esxi02.tdhy.local bootstop: Host is powering off
2021-04-18T11:26:11Z esxi02.tdhy.local init: starting pid 2635459, tty '': '/usr/lib/vmware/vmksummary/log-bootstop.sh stop'
2021-04-18T11:26:11.337Z esxi02.tdhy.local Hostd: info hostd[2101848] [Originator@6876 sub=Vimsvc.TaskManager opID=738620fd user=vpxuser] Task Completed : haTask--vim.event.EventHistoryCollector.readNext-757537 Status success
2021-04-18T11:26:11.337Z esxi02.tdhy.local Hostd: info hostd[2102993] [Originator@6876 sub=Vimsvc.TaskManager opID=738620fd user=vpxuser] Task Created : haTask--vim.event.EventHistoryCollector.readNext-757537
2021-04-18T11:26:11.334Z esxi02.tdhy.local Hostd: info hostd[2102075] [Originator@6876 sub=SysCommandPosix] ForkExec(/sbin/poweroff) 2635458
2021-04-18T11:26:11.334Z esxi02.tdhy.local Hostd: info hostd[2102075] [Originator@6876 sub=Vimsvc.ha-eventmgr] Event 1020 : Shut down of esxi02.tdhy.local in ha-datacenter: Unknown
2021-04-18T11:26:11.334Z esxi02.tdhy.local Hostd: warning hostd[2102075] [Originator@6876 sub=Hostsvc.HaHost] Failed to find activation record, event user unknown.
2021-04-18T11:26:11.334Z esxi02.tdhy.local Hostd: info hostd[2102075] [Originator@6876 sub=Hostsvc.HaHost] Shutdown, force = true
2021-04-18T11:26:11.333Z esxi02.tdhy.local Hostd: info hostd[2102075] [Originator@6876 sub=Hostsvc.HaHost] ACPI power event from the vmkernel
2021-04-18T11:26:11.333Z esxi02.tdhy.local vmkernel: cpu0:2097212)VMKAcpi: 259: Power button pressed; requesting graceful shutdown and poweroff