August 2016
Intermediate to advanced
468 pages
9h 53m
English
Content preview from Mastering KVM VirtualizationBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Troubleshooting the virtualization layer of OpenStack
KVM is the de facto hypervisor choice for OpenStack compute as service. There are plenty of native KVM debugging mechanisms that you can use for troubleshooting issues that occur while launching an instance on your OpenStack environment. Alternatively, if something unusual suddenly happened with a critical instance, libvirt and QEMU provide a rich set of debugging controls that allow us to query (or modify) the state of virtual machines in distress.
The following log files play a very important role in troubleshooting compute layer issues. Please note these files are on the nova compute hosts nodes:
/var/log/nova/nova-api.log /var/log/nova/nova-compute.log /etc/libvirt/qemu/*.xml /var/lib/nova/instances/* ...
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