Difference between revisions of "Libvirt"
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| Line 16: | Line 16: | ||
== Config files and directories == | == Config files and directories == | ||
* Config directories: | * Config directories: | ||
| − | :: <code>/etc/[[ | + | :: <code>/etc/[[libvirt]]/</code> |
| − | :: <code>/etc/[[ | + | :: <code>/etc/[[libvirt]]/qemu</code> |
* Config files: | * Config files: | ||
:: <code>/etc/libvirt/virtlogd.conf</code> | :: <code>/etc/libvirt/virtlogd.conf</code> | ||
| Line 25: | Line 25: | ||
* Logs: | * Logs: | ||
:<code>/var/log/libvirt/qemu</code> | :<code>/var/log/libvirt/qemu</code> | ||
| − | :<code>[[ | + | :<code>[[journalctl]] -u libvirtd</code> |
== [[Linux Administration/System Services/System Logging/Journalctl|Journalctl]] errors == | == [[Linux Administration/System Services/System Logging/Journalctl|Journalctl]] errors == | ||
Revision as of 06:18, 24 December 2019
libvirt[1] is a virtualization API with supports for KVM, QEMU, Xen, Virtuozzo, VMWare ESX, LXC, BHyve and more
Contents
Ubuntu packages
At least the following packages compose libvirt in Ubuntu:
- libvirt-bin
- libvirt-clients: virsh, virt-admin virt-host-validate virt-login-shell virt-pki-validate virt-xml-validate
- libvirt-daemon:
- libvirtd:
/etc/libvirt/virtlogd.conf - virt-sanlock-cleanup
- virtlockd
- virtlogd
- libvirtd:
Config files and directories
- Config directories:
- Config files:
/etc/libvirt/virtlogd.conf- Includes information about Unix Socket permissions: unix_sock_group, unix_sock_ro_perms, unix_sock_rw_perms, auth_unix_ro, auth_unix_rw
- Images directory:
/var/lib/libvirt/images(See:virsh pool-define-as) - Logs:
/var/log/libvirt/qemujournalctl -u libvirtd
Journalctl errors
libvirtd[14189]: 2019-11-21 15:08:13.035+0000: 14192: error : qemuDomainBlockCommit:17568 : invalid argument: top '/path/to/file/VM_NAME.qcow2' in chain for 'hda' has no backing file
Activities
Basic
- Read Libvirt Changelog: https://libvirt.org/git/?p=libvirt.git;a=log
- Read /Libvirt Release notes/: https://libvirt.org/news.html
- Read Libvirt FAQ: https://wiki.libvirt.org/page/FAQ
Medium
- Restart libvirtd daemon:
systemctl restart libvirtd
Expert:
- Read Libvirt code: https://github.com/libvirt/libvirt
- Implement uptime functionality in libvirt code: https://www.spinics.net/linux/fedora/libvir/msg98027.html
- /Review libvirt error messages in journald/
- Understand different CPU model an topologies: https://libvirt.org/formatdomain.html#elementsCPU
See also
virsh: Storage information, Connecting, Operations, Memory, Snapshots, Networking, CPU, release notes,virsh nodedev-list- /qemu/
- MacVTap
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