Call “HostFirewallSystem.UpdateRuleset” for object “firewallSystem” on ESXi “…” failed.

while poking around brand new installation of free edition of vmware vsphere 5 i managed to screw up the firewall.

in result any changes done in vshpere client in configuration>security profile>firewall properties were resulting with errors:

Call "HostFirewallSystem.UpdateRuleset" for object "firewallSystem" on ESXi "host" failed.
Operation failed, diagnostics report: Sysinfo error on operation returned status : Already exists. Please see the VMkernel log for detailed error information

i’ve found a solution here. to get rid of errors from gui i had to:

  • ssh to the vsphare server, and edit the /etc/vmware/esx.conf using vi. i had to remove all lines /firewall/services/{servicename}/allowedip/ipstr that referred to single hosts – i’ve written them using /32 notation.
  • reboot the server

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