So, to make is work, you need to chown 36:36 and chmod +x for 36:36 of
course.
As for logging, since the hook is run under the vdsm context, you can tap
right into the logging of vdsm, or you can write your own log file,
whatever you prefer to code.
See
line 197 - sys.stderr.write will actually dump into the vdsm log.
On Tue, Jan 12, 2016 at 10:55 AM, Jean-Pierre Ribeauville <
jpribeauville(a)axway.com> wrote:
Hi,
/usr/share/vdsm/hooking.py is present on my host.
I placed my test_hook.py in /usr/libexec/vdsm/hooks/before_vm_start
As I want to have it invoked for every started VM , I don’t need custom
property ; Am I right ?
Remains the point “make it accessible to vdsm:kvm” what do you mean ?
BTW , are vdsm hooks log infos located in /var/log/vdsm/vdsm.log ?
Thx for help.
J.P.
*De :* Dan Yasny [mailto:dyasny@gmail.com]
*Envoyé :* mardi 12 janvier 2016 16:48
*À :* Jean-Pierre Ribeauville
*Cc :* users(a)ovirt.org
*Objet :* Re: [ovirt-users] vdsm hook issues
OK, so the hooking module is included in the vdsm package itself. Please
make sure you have /usr/share/vdsm/hooking.py on the host.
The manual run fails, because it is not running in the vdsm context, and
so the modules imported are the python site-packages and not the submodules
under vdsm.
To make a hook work, you need to place it on the host, make it accessible
to vdsm:kvm, and maybe define a custom property, if you don't want the hook
to just run on every started VM.
On Tue, Jan 12, 2016 at 10:35 AM, Jean-Pierre Ribeauville <
jpribeauville(a)axway.com> wrote:
Hi,
1° It’s a full RHEL7 OS.
2°
vdsm-python-zombiereaper-4.16.27-0.el7.centos.noarch
vdsm-python-4.16.27-0.el7.centos.noarch
vdsm-yajsonrpc-4.16.27-0.el7.centos.noarch
vdsm-xmlrpc-4.16.27-0.el7.centos.noarch
vdsm-cli-4.16.27-0.el7.centos.noarch
vdsm-jsonrpc-java-1.0.15-1.el7.noarch
vdsm-jsonrpc-4.16.27-0.el7.centos.noarch
vdsm-4.16.27-0.el7.centos.x86_64
3°
#!/usr/bin/python
1)
2) import os
3) import sys
4) import grp
5) import pwd
6) import traceback
7)
8) import hooking
9)
10) def createChannelElement(domxml):
11) '''
12) <channel type='unix'>
13) <source mode='bind'
path='//var/lib/libvirt/qemu/VM_RHEL7-1_omnivision_1.agent'/>
14) <target type='virtio' name='omnivision_1.agent'/>
15) </channel>
16) '''
17)
18) channel = domxml.createElement('channel')
19) disk.setAttribute('type', 'unix')
20)
21) source = domxml.createElement('source')
22) source.setAttribute('mode', 'bind')
23)
24) # find domain name
25) domainame = domxml.getElementsByTagName('name')
26)
27) source.setAttribute('path', '//var/lib/libvirt/qemu/' +
domainame + '_omnivision_1.agent')
28) disk.appendChild(source)
29)
30) target = domxml.createElement('target')
31) target.setAttribute('type', 'virtio')
32) target.setAttribute('name', 'omnivision_1.agent')
33) disk.appendChild(target)
34)
35) return channel
36)
37) try:
38) domxml = hooking.read_domxml()
39) devices = domxml.getElementsByTagName('devices')[0]
40) channeldev = createChannelElement(domxml)
41) sys.stderr.write('createChannel: adding xml: %s\n' %
channeldev.toxml())
42) devices.appendChild(channeldev)
43)
44) hooking.write_domxml(domxml)
45) except:
46) sys.stderr.write('createChannel: [unexpected error]: %s\n' %
47) traceback.format_exc())
48) sys.exit(2)
Thx for help.
Regards,
J.P.
*De :* Dan Yasny [mailto:dyasny@gmail.com]
*Envoyé :* mardi 12 janvier 2016 16:23
*À :* Jean-Pierre Ribeauville
*Cc :* users(a)ovirt.org
*Objet :* Re: [ovirt-users] vdsm hook issues
1. Are you using a full OS or a node?
2. rpm -qa |grep vdsm
3. if possible, post the hook code
Thanks
On Tue, Jan 12, 2016 at 10:17 AM, Jean-Pierre Ribeauville <
jpribeauville(a)axway.com> wrote:
Hi,
1) is it enough to add a hook.py in
/usr/libexec/vdsm/hooks/before_vm_start directory , and then shut down and
reboot a guest to
see this hook.py invoked ?
2) when running manually my hook.py, I got following error :
ImportError: No module named hooking
Do I have to install anything to solve this issue ?
Thanks for help.
Regards,
*J.P. Ribeauville*
P: +33.(0).1.47.17.20.49
.
Puteaux 3 Etage 5 Bureau 4
*jpribeauville(a)axway.com <jpribeauville(a)axway.com>*
http://www.axway.com
P Pensez à l’environnement avant d’imprimer.
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