After you install or upgrade to the latest version of vRealize Application Remote Collector, you must set up accurate timekeeping as part of the deployment. If the time settings between vRealize Application Remote Collector and vRealize Operations Manager are not synchronized, you face agent installation and metric collection issues. Ensure time synchronization between the endpoint VMs, vCenter Server, ESX Hosts, and vRealize Operations Manager using the Network Time Protocol (NTP).


  1. Log in to the vRealize Application Remote Collector appliance and modify the ntp.conf file available in /etc/ntp.conf by adding following in the following format:
    Note: Replace with a suitable time server setting. You can use the FQDN or IP of the time server.
  2. Enter the following command to start the NTP daemon:
    systemctl start ntpd
  3. Enter the following command to enable the NTP daemon:
    systemctl enable ntpd
  4. Run the following command to verify if NTP is configured correctly:
    If NTP is synchronized correctly, you see a message similar to the following:
    synchronised to NTP server ( at stratum 3
       time correct to within 50 ms
       polling server every 64 s