Why are xen guest systems showing 'unknown host' on Red Hat Network?
Environment
- Red Hat Enterprise Linux 5
- Xen Virtualization.
Issue
- The virtual system shows "Unknown host" in Red Hat Network.
Resolution
- Run the /usr/share/rhn/virtualization/poller.py to detect the guests on host system,
# python /usr/share/rhn/virtualization/poller.py
- Run the profile sync,
# rhn-profile-sync
Root Cause
- Entries in cron job /etc/cron.d/rhn-virtualization.cron are commented,
# 0-59/2 * * * * root python /usr/share/rhn/virtualization/poller.py
- The
rhnsd
service is not running.
# service rhnsd status
Diagnostic Steps
- Check whether /etc/cron.d/rhn-virtualization.cron has correct entry as below and it should not be commented,
# cat /etc/cron.d/rhn-virtualization.cron
0-59/2 * * * * root python /usr/share/rhn/virtualization/poller.py
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