ZenPacks : libvirt Virtualization : Comments

RE: libvirt Virtualization

community@zenoss.org — Wed, 14 Apr 2010 16:41:42 GMT

This is looking like a really good package. I'm monitoring ESX (vSphere 4) servers and have it working (after updating to libvirt 0.8.0 under Fedora core 12). But I guess because the libvirt libraries doen't return all the values for the domain of each guest, the performance graphs per guest are not populated. As such, I'm getting back some "general errors" when queries for the guest stats take place.

Is there an easy way to remove the performance tests from the ESX devices, or is adding the -p password parameter okay for the domainstats checks?

RE: libvirt Virtualization

community@zenoss.org — Wed, 28 Apr 2010 20:17:35 GMT

I finally got libvirt 0.8.0 installed and working from source under Unbuntu 8.04 LTS. I am getting the following error when I run from the command line to test.

libvir: Domain error : this function is not supported by the hypervisor: virDomainBlockStats

Traceback (most recent call last):

File "./check_libvirt.py", line 458, in <module>

get_data_all(conn)

File "./check_libvirt.py", line 358, in get_data_all

disk_stats=dom.blockStats(dev)

File "/usr/local/lib/python2.5/site-packages/libvirt.py", line 600, in blockStats

if ret is None: raise libvirtError ('virDomainBlockStats() failed', dom=self)

libvirt.libvirtError: this function is not supported by the hypervisor: virDomainBlockStats

RE: libvirt Virtualization

community@zenoss.org — Fri, 02 Jul 2010 15:27:48 GMT

Is there a way to have this apply in a different device class? For instance, I have /Devices/Server/Linux/MySQL , etc and would like /Device/Server/Linux/KVM Host.

RE: libvirt Virtualization

community@zenoss.org — Tue, 26 Oct 2010 20:22:23 GMT

I have gotten my KVM/QEMU machines to work with this zenpack. However in getting my esx hosts to show I had to go thru the task of installing libvirt on my zenoss collector. Once that is done running a model on my esxi machine returns

File "/opt/zenoss/ZenPacks/ZenPacks.community.libvirt-1.71.egg/ZenPacks/community/libvirt/libexec/check_libvirt.py", line 14, in ?

import libvirt

ImportError: No module named libvirt

Libvirt is running and was compiled at the path /usr/local/src/libvirt-0.8.4

Any assistance here would be great, as I feel I am very close to being able to monitor my whole virtualized environments.

Zenoss	Zenoss 3.0.2
OS	Linux (x86_64) 2.6.18 (Linux (hostname) 2.6.18-164.15.1.el5 #1 SMP Wed Mar 17 11:30:06 EDT 2010 x86_64)
Zope	Zope 2.12.1
Python	Python 2.6.2
Database	MySQL 5.0.77 (Ver 5.0.77)
RRD	RRDtool 1.3.9
Twisted	Twisted 8.1.0
NetSnmp	NetSnmp 5.3.2
PyNetSnmp	PyNetSnmp 0.28.14
WMI	Wmi 1.3.13

RE: libvirt Virtualization

community@zenoss.org — Wed, 29 Jun 2011 13:46:40 GMT

According to this post:

http://community.zenoss.org/message/54940

This zenpack doesn't run on Zenoss 3x

Any chance of an updated zenpack?

Thanks,

RE: libvirt Virtualization

community@zenoss.org — Fri, 01 Jul 2011 20:23:43 GMT

After rename to zenpack --install ZenPacks.community.libvirt-1.71.egg can be installed without problem.

RE: libvirt Virtualization

community@zenoss.org — Tue, 19 Jun 2012 12:13:12 GMT

Same issue here .

did you managed to solve it ?

Solved by :

aptitude install python-libvirt

But it's still not working ...

I 've set up a keyless connexion to the host.

I can do a virsh -c qemu+ssh:/IP/system sysinfo .

But I get the same result than you once I model it.

I can run the script with the arguments and get a return but once I model it, I get :

2012-06-20 10:18:58,303 INFO zen.PythonClient: libvirt: username=root connecttype=qemu+ssh://

libvir: RPC error : Cannot recv data: Host key verification failed. : Connection reset by peer

Traceback (most recent call last):

File "/usr/local/zenoss/zenoss/ZenPacks/ZenPacks.community.libvirt-1.71.egg/ZenPacks/community/libvirt/libexec/check_libvirt.py", line 422, in

conn=libvirt.openReadOnly(connecttype+username+'@'+hostname+'/system'+'?socket='+socket)

File "/usr/lib/python2.7/dist-packages/libvirt.py", line 247, in openReadOnly

if ret is None:raise libvirtError('virConnectOpenReadOnly() failed')

libvirt.libvirtError: Cannot recv data: Host key verification failed. : Connection reset by peer

any idea ???

RE: libvirt Virtualization

community@zenoss.org — Wed, 20 Jun 2012 15:53:15 GMT

Solved :

I set up the passworless ssh for the ZENOSS user.

For information :

you need to set up this connexion . If you do it for another user, even if you specify this other user in the zLibvirtUsername. It won't works.

But all the guest are down is taht normal ?

RE: libvirt Virtualization

community@zenoss.org — Tue, 17 Jul 2012 14:00:20 GMT

I am using Zenoss libvirt pack, it works fine, only the concern for me is i am getting guest as a one-1, one-2 etc, how can i get actual server name ? Also all the guests shows down, but i can see the graphs. Is there any way when we spin VM on XEN actual server name appears in LibvirtGuest ?

Zenoss Version: Zenoss Core 3.2.1.

RE: libvirt Virtualization

community@zenoss.org — Tue, 30 Oct 2012 12:48:32 GMT

Short Howto for getting this plugin running with Zenoss Core 4.2

cd /var/tmp/

git clone https://github.com/zenoss/ZenPacks.community.libvirt.git

cd ZenPacks.community.libvirt/

python setup.py bdist_egg

zenpack --install dist/ZenPacks.community.libvirt-1.96-py2.7.egg

Thats it.

I had some exceptions because of problems with unknown values returned from libvirt/kvm.

This patch might help in case of problems (just ignores those values I've seen so far).

diff --git a/ZenPacks/community/libvirt/libexec/check_libvirt.py b/ZenPacks/community/libvirt/libexec/check_libvirt.py

index 93013b7..ac94044 100755

--- a/ZenPacks/community/libvirt/libexec/check_libvirt.py

+++ b/ZenPacks/community/libvirt/libexec/check_libvirt.py

@@ -364,6 +364,8 @@ def get_data_modeler(conn):

volume = pool.storageVolLookupByName(volumepath)

volinfo = volume.info()

[type,capacity,allocation] = volinfo

+ if type >= len(volumetypes):

+ continue

if verbose:

print "Volume: ",volumetypes[type],capacity,allocation,volume.name(),volume.key(),volume.path()

voldata['type'] = volumetypes[type]

diff --git a/ZenPacks/community/libvirt/libvirtGuest.py b/ZenPacks/community/libvirt/libvirtGuest.py

index 9318fc3..bd1c915 100644

--- a/ZenPacks/community/libvirt/libvirtGuest.py

+++ b/ZenPacks/community/libvirt/libvirtGuest.py

@@ -84,7 +84,10 @@ class libvirtGuest(DeviceComponent, ManagedEntity):

state = self.lvState

if state == None or state == '' or state == -1:

return "Unknown"

- return statestrmap[int(state)]

+ try:

+ return statestrmap[int(state)]

+ except ValueError:

+ return "Unknown"

def dolibvirtSave(self):

self.dolibvirtCommand('save')

RE: libvirt Virtualization

community@zenoss.org — Thu, 24 Jan 2013 07:32:52 GMT

Hi, I'm having trouble understanding if this plugin is working properly under Zenoss 4.2.3. I am able to install, and get basic host summary, but virtual guest graphs are not populating at all.

I've tested remote passwordless access via virsh, it is working as expected for user zenoss.

Could someone confirm if this plugin is broken in 4.2.3?

RE: libvirt Virtualization

community@zenoss.org — Tue, 26 Mar 2013 16:39:21 GMT

I've got this working in 4.2.3. Which version of the ZenPack are you using?

I have had success with 1.97, giving my user passwordless root access on the KVM hosts.

RE: libvirt Virtualization

community@zenoss.org — Tue, 26 Mar 2013 20:06:31 GMT

I'm using 4.2.3 and 1.97 of this zenpack. I cant seem to get any volume, guest, or pool stats in Zenoss...however When i run the data source command on my zenoss server directly, it works:

check_libvirt.py -H kvm1.us1.foo.com -u zenoss -l pool -n default -c qemu+ssh://

|allocation=4918219964416

I'm sure my ssh user has no issues connecting, and has libvirt access.

RE: libvirt Virtualization

community@zenoss.org — Thu, 23 May 2013 18:48:26 GMT

libvir: XML-RPC error : Cannot recv data: Permission denied, please try again. libvir: XML-RPC error : Cannot recv data: Permission denied, please try again.

I have added zenpack and now trying to model a Xen server.

can anyone help? Please ????

RE: libvirt Virtualization

community@zenoss.org — Tue, 28 May 2013 17:30:37 GMT

Has anyone got this working with public keys rather than username / password for ssh? Any clues?

Thanks,

Jane

RE: libvirt Virtualization

community@zenoss.org — Tue, 28 May 2013 18:38:53 GMT

I am current using this ZenPack with public keys, but only as the root user. It doesn't appear to work if you are not the root user.

RE: libvirt Virtualization

community@zenoss.org — Tue, 28 May 2013 18:42:35 GMT

You have to set up permissions inside libvirt to allow non-root users.

basically i had to change this in /etc/libvirt/libvirtd.conf:

unix_sock_group = "libvirt"

unix_sock_ro_perms = "0770"

unix_sock_rw_perms = "0770"

unix_sock_dir = "/var/run/libvirt"

auth_unix_ro = "none"

auth_unix_rw = "none"

Then add a local user to your kvm machine "zenoss", add the user to the

libvirt group. Configure Zenoss to use user zenoss with SSH keys.

Works.

RE: libvirt Virtualization

community@zenoss.org — Mon, 10 Jun 2013 11:24:58 GMT

2013-06-10 12:13:06,190 INFO zen.PythonClient: libvirt: username=root connecttype=xen+ssh://

libvir: XML-RPC error : Cannot recv data: Permission denied, please try again

RE: libvirt Virtualization

community@zenoss.org — Thu, 18 Jul 2013 12:51:33 GMT

Jcurry, Kris K:

Solved the problem by generating the public key for zenoss user on monitoring machine. Then added the public key to authorized keys on libvirt-host.

Then *this was important* established the ssh-connection once from the zenoss machine to libvirt-host machine. And had to use both FQDN and short host name.