Error: unknown procedure: 342

[zaghost]

I got en error when visit http:///computes/2/create/ or some other pages
There is the following line in the console log:
libvirt: XML-RPC error : unknown procedure: 342

[catborise]

"http:///computes/2/create/" is this the adress? there should be hostname or ip

it is related libvirt and/or network/port problem. you should check libvirt config.

how you check...

1. login to a host
2. run virt-manager
3. add a connection(ssh or tcp or ssl) to other host which is problematic.
   you connect and manage other host hypervisor. if you could not that. you must solve that problem before webvirtcloud use

[zaghost]

@catborise Thank you for your reply
I'm sorry, I wanted to say "http://<host>/computes/2/create/", but github don't display the "<host>" part.
In http://<hostname>/instances/, the VMs are listed under libvirt host, so I think the connection to libvirt host is OK.
But I click "Add Instance" button, it turns to http://<host>/computes/2/create/ where display an error message

[catborise]

what is host operating system?
what is libvirt version?
what is qemu version?

login to virt host:
run;
qemu-img --version
virsh --version

[zaghost]

the versions are a bit old

kvm03:~ # uname -a
Linux kvm03 3.0.13-0.27-default #1 SMP Wed Feb 15 13:33:49 UTC 2012 (d73692b) x86_64 x86_64 x86_64 GNU/Linux
kvm03:~ # cat /etc/SuSE-release
SUSE Linux Enterprise Server 11 (x86_64)
VERSION = 11
PATCHLEVEL = 2
kvm03:~ # virsh -v
0.9.6
kvm03:~ # qemu-img --version
qemu-img version 0.15.0, Copyright (c) 2004-2008 Fabrice Bellard
usage: qemu-img command [command options]
QEMU disk image utility

[catborise]

It is too old for qemu and libvirt. You should update these packages.
Latest stable releases for libvirt is 5.0 and qemu is 2.12

You should update them to use webvirtcloud without problem

[sckghost]

I also encountered the same problem. In the latest version of webvirtcloud, Error: unknown procedure: 342 appeared when clicking on an instance of the web interface. Here is the information of the server system.

[root@webvirt2-200-74 script]# cat /etc/redhat-release
CentOS Linux release 7.6.1810 (Core)
[root@webvirt2-200-74 script]# virsh -v
4.5.0

[catborise]

hi @sckghost could you please send me the output out this command "virsh version"

[sckghost]

你好@sckghost请你输出这个命令“virsh version”

(venv) [root@webvirt2-200-74 ~]# virsh version
Compiled against library: libvirt 4.5.0
Using library: libvirt 4.5.0
Using API: QEMU 4.5.0
Running hypervisor: QEMU 1.5.3

[sckghost]

你好@sckghost请你输出这个命令“virsh version”

centos7.x Must I use libvirt version 5.0 or above?

[catborise]

@sckghost no, you should upgrade the qemu.
i am using also centos 7 and i upgrade the qemu package to "2.12"

you could add "qemu-kvm-ev" repo to upgrade the qemu-kvm package.

i think this solve your problem.
qemu 2.12 stable version. it contains many features.

[sckghost]

@sckghost不，你应该升级qemu。
我也使用centos 7，我将qemu包升级到“2.12”

你可以添加“qemu-kvm-ev”repo来升级qemu-kvm包。

我认为这可以解决你的问题。
qemu 2.12稳定版。它包含许多功能。

Okay, it's still 342 error after installation. What's next?

Yum install centos-release-qemu-ev

Yum update qemu-kvm

(venv) [root@webvirt2-200-74 ~]# virsh version

Compiled against library: libvirt 4.5.0

Use library: libvirt 4.5.0

Using API: QEMU 4.5.0

Running hypervisor: QEMU 2.12.0

[catborise]

@sckghost could you create a new instance to see the error still exist
(ps: to activate new version of qemu you should stop and start the instance.)

[sckghost]

@sckghost no, you should upgrade the qemu.
i am using also centos 7 and i upgrade the qemu package to "2.12"

you could add "qemu-kvm-ev" repo to upgrade the qemu-kvm package.

i think this solve your problem.
qemu 2.12 stable version. it contains many features.

(venv) [root@webvirt2 webvirtcloud]# cat conf/requirements.txt
Django==1.11.17
websockify==0.8.0
gunicorn==19.9.0
lxml==4.2.5
libvirt-python==4.10.0
pytz

Does the libvirt-python version need to be changed to 5.0, or the libvirt version of the system needs to be upgraded to 5.0?

[sckghost]

@sckghost可以创建一个新实例来查看错误仍然存​​在
（ps：要激活新版本的qemu，你应该停止并启动实例。）

I tried, but I still couldn't. Restart webvirtcloud and nginx. Errors still exist.

[catborise]

no, i also did not upgrade libvirt-python. i am using 4.10.

i suspect jquery.js, i did upgrade it lately. it could cause something like that. but i need more information.
could you check with chrome(right click and inspect) if there is an anomaly