Troubleshooting Offline Or Failed Hosts

When you see a hypervisor host in a Private Cloud Director environment that's offline, failed, or in an error state, here's how to debug the issue:

Most common causes

• Connectivity to the Private Cloud Director management plane controller is broken or unreachable.
• Dependent services are down.
• Packages are corrupted or not installed.
• NTP is not synchronized.
• Insufficient disk space available.
• Ensure that the host you are trying to add meets the pre-requisites.

Steps To Troubleshoot

1

Verify outbound network connectivity

Ensure the host can reach the internet and the Private Cloud Director management plane controller:

$ curl -s https://<FQDN>
$ ping www.google.com
$ telnet www.google.com 443

2

Proxy configuration (if applicable)

If your environment uses a proxy, configure the Platform9 host agent on the host to route traffic via the proxy:

$ sudo bash <path to host agent installer> --proxy=<proxy server>:<proxy port>

3

Verify hostname consistency

Make sure the hostname on the host matches the hostname shown in the GUI.

4

Verify host UUID

Confirm the UUID in the host_id file matches the host UUID shown in the GUI:

$ sudo cat /etc/pf9/host_id.conf

5

Verify NTP configuration

If NTP is enabled, ensure NTP servers are configured correctly across nodes in:

/etc/systemd/timesyncd.conf.d/conf.d

Verify whether the host's time is in sync:

$ sudo timedatectl status

6

Verify Platform9 packages

Check that Platform9 packages are installed and match the version shown in the Private Cloud Director GUI:

$ sudo apt list | grep -i pf9*

7

Confirm host agent services are running

Check the status of the Platform9 services:

$ sudo systemctl status pf9-hostagent
$ sudo systemctl status pf9-ostackhost
$ sudo systemctl status pf9-comms
$ sudo systemctl status pf9-sidekick

8

Inspect service logs

Check logs for errors, timeouts, or warnings around the time of the issue and verify whether recent network changes could have impacted connectivity:

$ sudo cat /var/log/pf9/hostagent.log
$ sudo cat /var/log/pf9/ostackhost.log
$ sudo cat /var/log/pf9/comms/comms.log
$ sudo cat /var/log/pf9/sidekick/sidekick.log

9

Contact Platform9 Support

If these steps don't resolve the issue, reach out to the Platform9 Support team for additional assistance.