![]() ![]() We can set appropriate timezone in vCenter, if we want to see this converted to local time at vCenter UI level. Note that ESXi host time is always in UTC and cannot be changed. In this case ensure that timezone is set to UTC. Configure NTP at OOBE level such as IMM / iDRAC / iLO / XClarity etc.Hence to ensure that ESXi host has correct time, perhaps do the following: This may lead to issues with distributed vSAN storage and also lead to issues with log times being wrong. Problem with ESXi host time can also manifest as wrong time in VMs esp. ![]() It is critical for ESXi host to have correct time. The PowerCLI Function to set the desired configuration for one or more ESXi hosts is published on the VMware PowerCLI Example Scripts GitHub Repository: Set-VMHostSecureNTP.ps1 function Set-VMHostSecureNTP Īnsible was surprisingly well suited to perform this configuration.Home > VMWare platform > VMWare vSphere or ESXi > ESXi host time settingsīetter option is to configuer NTP as explained at Configure NTP from cli or UI instead of correcting time manually. If you are also interested in this function, please vote for this idea: Cmdlets to manage VMHost FirewallĮven if no native PowerCLI Cmdlet is available, but the required functionality is available through esxcli, Get-ESXCLI can solve the problem. VMware PowerCLI does currently not offer a native Cmdlet to configure allowed IPs or ranges. Var: host_firewall | json_query(host_firewall_query) Var: host_services | json_query(host_services_query) Host_firewall_query: "hosts_firewall_info.*" Host_services_query: "host_service_info.*" The Ansible Playbook to set the desired configuration for all hosts in the vSphere Cluster is available on GitHub: vmware_secure_ntp_cluster.yml - name: Secure ESXi Host NTP Service and enforce NTP Servers ![]() NTP Security Configuration with AnsibleĪll required Ansible Modules to enforce the NTP Security Configuration are available out of the box and are maintained by the community. I will show how to set the desired configuration with Ansible and PowerCLI. The desired ESXi NTP Security Configuration looks like this in the vSphere Client:īut as usual, it is not an option for me to do this configuration manually using the vSphere Client. The ESXi Host Client does currently not offer this ability. You can add Allowed IP Addresses for an ESXi Host via vSphere Client, vSphere Web Client, vCLI, or PowerCLI. Per default, the host firewall is configured to allow all IPs if a service is enabled. I wanted to restrict access to the host’s NTP client to the configured NTP Server IPs. To further extend the hardening of my VMware ESXi hosts, I have been working on scripted ESXi NTP Security Configuration. ![]()
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February 2023
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