Some Subscriptions not visible to guests
I am having some trouble with a subscription not being available to guests on a hypervisor.
I have multiple hypervisors running the full RHEL and running virt-who on each. The subscription for Linux running on each of these is the Linux with Smart Virtualization and Management. In addition there are three subscriptions for "Extended Lifecycle Support Unlimited Guests."
On one hypervisor, it works as expected. both subscriptions are listed for the hypervisor, and the guests needing the ELS subscription can have both added to them.
On two different hypervisors, the situation it different. Although the hypervisor lists both subscriptions, the guests can only see the main Linux with Smart Virtualization subscription. When I try to add the ELS guest subscription, it is not listed as one that can be added.
I have checked the rhsm.log and all three hypervisors list adding the subscription and give a pem certificate name. Using rct cat-cert <certificate.pem> shows the name and subscription info for the ELS subscription.
I have restarted virt-who several times, and have removed and re-added the subscription to they hypervisors, but so far, nothing seems to work. The guests on two of the hypervisors still cannot see the ELS guest subscription.
Anyone have any ideas which logs I can look at to see why they are not available to the guests?
Thanx in advance.
Responses
Frank - Thanks for reporting back with the message that the guest VMs are now seeing the expected subscriptions. You're right, though, in that a reboot of the Satellite server should not have been necessary to get this working. Just checking... was it the Satellite server you rebooted?
Just for the record, can you please confirm the version numbers for:
- Red Hat Enterprise Linux
- Red Hat Satellite
- virt-who (package)
I'm just curious if any of these might have contributed to the issue.
Off-topic, but as a former Microsoft Windows Server administrator, having begun in Windows Server NT, I feel your pain.
Frank - Thank you. From what I can tell, you are using the very latest version of all three components involved. I wanted to check, in case you might have had a known issue occur. I haven't heard of anything similar occurring to other customers.
Since the symptoms were resolved with the reboot, there's not much likelihood of finding the root cause. However, you were concerned about the usage of the swap file, which suggests memory usage at the time was outside what you would consider normal. I wonder which processes were using the most amount of memory, and why?
Frank - Thanks for your reply. For all the reasons you mentioned, memory usage can be a problem. Unfortunately, the memory requirements of Satellite 6 have increased, as you already mentioned. That's left yourself, and likely other customers, in an awkward position because it's not a simple matter to upgrade the memory in a physical host.
I can't provide any immediate tips about controlling memory usage. Since this is proving to be a problem, though, I suggest you raise a support request with Red Hat Technical Support.
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