libvirt.libvirtError: An error occurred, but the cause is unknow - libvirt

I am using XEN hypervisor. For managing virtual Machine I am using virt-manager whenever I want to start to Virtual Machine at last when everything is ready and I click the create Button I get the following error
Unable to complete install: 'An error occurred, but the cause is unknown'
Traceback (most recent call last):
File "/usr/share/virt-manager/virtManager/asyncjob.py", line 75, in cb_wrapper
callback(asyncjob, *args, **kwargs)
File "/usr/share/virt-manager/virtManager/createvm.py", line 2089, in _do_async_install
guest.installer_instance.start_install(guest, meter=meter)
File "/usr/share/virt-manager/virtinst/install/installer.py", line 542, in start_install
domain = self._create_guest(
File "/usr/share/virt-manager/virtinst/install/installer.py", line 491, in _create_guest
domain = self.conn.createXML(install_xml or final_xml, 0)
File "/usr/lib/python3/dist-packages/libvirt.py", line 4034, in createXML
if ret is None:raise libvirtError('virDomainCreateXML() failed', conn=self)
libvirt.libvirtError: An error occurred, but the cause is unknow

For the Xen driver, you may have more infos in /var/log/libvirt/libxl/libxl-driver.log

Same issue here.
When I check the /var/log/syslog, there is a log from libvirtd: "unsupported configuration: emulator '/usr/lib/xen-4.11/bin/qemu-system-i386' not found".
It may be caused by this bug. So we can create a symbolic link sudo ln -s /usr/bin/qemu-system-i386 /usr/lib/xen-4.11/bin/qemu-system-i386, and I hope it works for you too.

Check if you have installed
qemu-system-x86-xen
if not - install
apt install qemu-system-x86-xen
that helped me

Related

gcloud crashing due to (SSLHandshakeError): [SSL: UNKNOWN_PROTOCOL]

I have installed gcloud sdk by following the link https://cloud.google.com/sdk/docs/downloads-apt-get on Ubuntu 16.04.6 LTS. I have also done the proxy configuration using the following link https://cloud.google.com/sdk/docs/proxy-settings.
Google Cloud SDK 288.0.0
alpha 2020.04.03
beta 2020.04.03
bq 2.0.56
core 2020.04.03
gsutil 4.49
kubectl 2020.04.03
gcloud init is successful and gcloud info --run-diagnostics displays no problems. However gcloud crashes for any other commands I run. I have tried the following commands.
1. gcloud compute images list
2. gcloud services list
3. gcloud logging logs list
Here is the message I get after the crash.
ERROR: gcloud crashed (SSLHandshakeError): [SSL: UNKNOWN_PROTOCOL] unknown protocol (_ssl.c:590)
If you would like to report this issue, please run the following command:
gcloud feedback
To check gcloud for common problems, please run the following command:
gcloud info --run-diagnostics
Can someone please help.
PS. Here is debug output.
DEBUG: Running [gcloud.compute.images.list] with arguments: [--verbosity: "debug"]
INFO: Refreshing access_token
INFO: Display format: " table(
name,
selfLink.map().scope(projects).segment(0):label=PROJECT,
family,
deprecated.state:label=DEPRECATED,
status
)"
DEBUG: [SSL: UNKNOWN_PROTOCOL] unknown protocol (_ssl.c:590)
Traceback (most recent call last):
File "/usr/lib/google-cloud-sdk/lib/googlecloudsdk/calliope/cli.py", line 983, in Execute
resources = calliope_command.Run(cli=self, args=args)
File "/usr/lib/google-cloud-sdk/lib/googlecloudsdk/calliope/backend.py", line 809, in Run
display_info=self.ai.display_info).Display()
File "/usr/lib/google-cloud-sdk/lib/googlecloudsdk/calliope/display.py", line 483, in Display
self._printer.Print(self._resources)
File "/usr/lib/google-cloud-sdk/lib/googlecloudsdk/core/resource/resource_printer_base.py", line 275, in Print
for resource in resources:
File "/usr/lib/google-cloud-sdk/lib/surface/compute/images/list.py", line 113, in _FilterDeprecated
for image in images:
File "/usr/lib/google-cloud-sdk/lib/googlecloudsdk/api_lib/compute/lister.py", line 1065, in __call__
errors=errors):
File "/usr/lib/google-cloud-sdk/lib/googlecloudsdk/api_lib/compute/request_helper.py", line 204, in ListJson
for item in _ListCore(requests, http, batch_url, errors, _HandleJsonList):
File "/usr/lib/google-cloud-sdk/lib/googlecloudsdk/api_lib/compute/request_helper.py", line 134, in _ListCore
requests=requests, http=http, batch_url=batch_url)
File "/usr/lib/google-cloud-sdk/lib/googlecloudsdk/api_lib/compute/batch_helper.py", line 106, in MakeRequests
batch_request_callback=batch_checker.BatchCheck)
File "/usr/bin/../lib/google-cloud-sdk/lib/third_party/apitools/base/py/batch.py", line 226, in Execute
batch_http_request.Execute(http)
File "/usr/bin/../lib/google-cloud-sdk/lib/third_party/apitools/base/py/batch.py", line 492, in Execute
self._Execute(http)
File "/usr/bin/../lib/google-cloud-sdk/lib/third_party/apitools/base/py/batch.py", line 449, in _Execute
response = http_wrapper.MakeRequest(http, request)
File "/usr/bin/../lib/google-cloud-sdk/lib/third_party/apitools/base/py/http_wrapper.py", line 356, in MakeRequest
max_retry_wait, total_wait_sec))
File "/usr/bin/../lib/google-cloud-sdk/lib/third_party/apitools/base/py/http_wrapper.py", line 304, in HandleExceptionsAndRebuildHttpConnections
raise retry_args.exc
SSLHandshakeError: [SSL: UNKNOWN_PROTOCOL] unknown protocol (_ssl.c:590)
ERROR: gcloud crashed (SSLHandshakeError): [SSL: UNKNOWN_PROTOCOL] unknown protocol (_ssl.c:590)
I got it working after some debugging. Seems like firewall was the issue in my case. I shifted to python 3.5 . After which I ran the same command gcloud compute images list
I got the error "Caught socket error, retrying request to url https://compute.googleapis.com/batch/compute/v1". Adding this url to firewall exception solved my issue.

Windows 10 Rtree installation successful from .whl file, but error when running code

I am running Python 3.7, 64bit on Windows 10 and trying desperately to get Rtree running. I use the package Rtree-0.9.1-cp37-cp37m-win_amd64.whl from Christoph Gohlke (https://www.lfd.uci.edu/~gohlke/pythonlibs/).
I have tried for very long to get it to work, but keep on getting the following error message when running a script that uses geopandas.
Traceback (most recent call last):
File "C:\Python37\lib\site-packages\rtree\core.py", line 90, in <module>
rt = ctypes.CDLL(os.path.join(here, 'spatialindex_c.dll'))
File "C:\Python37\lib\ctypes\__init__.py", line 364, in __init__
self._handle = _dlopen(self._name, mode)
OSError: [WinError 126] The specified module could not be found
The installation of the whl-package should include the libspatialindex files, but they are not found when running the code. I tried to use Python 2.7 first to run it, then installed Python 3.7. I've checked all the dependencies and checked whether the "spatialindex_c.dll" files are at the right place, but nothing helps. Would be great to get an answer on that.

selenium.common.exceptions.WebDriverException: Message: Service

I had a trouble when i use selenium to control my Chrome.
Here is my code:
from selenium import webdriver
driver = webdriver.Chrome()
When i tried to operate it ,it runs successfully at first,the Chrome pop on the screen. However, it shut down at the few seconds.
Traceback (most recent call last):
File "<pyshell#3>", line 1, in <module>
driver = webdriver.Chrome('C:\Program Files (x86)\Google\Chrome\chrome.exe')
File "C:\Users\35273\AppData\Local\Programs\Python\Python35\lib\site-packages\selenium\webdriver\chrome\webdriver.py", line 62, in __init__
self.service.start()
File "C:\Users\35273\AppData\Local\Programs\Python\Python35\lib\site-packages\selenium\webdriver\common\service.py", line 86, in start
self.assert_process_still_running()
File "C:\Users\35273\AppData\Local\Programs\Python\Python35\lib\site-packages\selenium\webdriver\common\service.py", line 99, in assert_process_still_running
% (self.path, return_code)
selenium.common.exceptions.WebDriverException: Message: Service C:\Program Files (x86)\Google\Chrome\chrome.exe unexpectedly exited. Status code was: 0
You need to provide the path of chromedriver...download from http://chromedriver.storage.googleapis.com/index.html?path=2.24/...unzip it and provide path to it in... webdriver.chrome ("path to chromedriver")
I explain the things here:
from selenium import webdriver
driver = webdriver.Chrome("C:\Program Files (x86)\Google\Chrome\Application\chrome.exe")
This is the error if i run the above code:
C:\Python27\python.exe C:/Users/Gaurav.Gaurav-PC/PycharmProjects/Learning/StackOverflow/SeleniumQuestion/test123.py
Traceback (most recent call last):
File "C:/Users/Gaurav.Gaurav-PC/PycharmProjects/Learning/StackOverflow/SeleniumQuestion/test123.py", line 4, in <module>
driver = webdriver.Chrome("C:\Program Files (x86)\Google\Chrome\Application\chrome.exe")
File "C:\Python27\lib\site-packages\selenium\webdriver\chrome\webdriver.py", line 62, in __init__
self.service.start()
File "C:\Python27\lib\site-packages\selenium\webdriver\common\service.py", line 86, in start
self.assert_process_still_running()
File "C:\Python27\lib\site-packages\selenium\webdriver\common\service.py", line 99, in assert_process_still_running
% (self.path, return_code)
selenium.common.exceptions.WebDriverException: Message: Service C:\Program Files (x86)\Google
\Chrome\Application\chrome.exe unexpectedly exited. Status code was: 0
Which is same as mentioned by #Weiziyoung in original problem.
The solution is as I mentioned you need to provide the path to chromedriver in place of chrome browser like
driver = webdriver.Chrome("E:\Jars\chromedriver.exe")
It will resolve the problem
Download the appropriate driver:http://chromedriver.storage.googleapis.com/index.html
turn up E:\Python37\Scripts <--Paste the chromedriver.exe file in
i faced the same error (behave.step_registry.AmbiguousStep: #given('Lunch chrome Browser') has already been defined in existing step #given('Lunch chrome Browser') at features/steps/OrangeHRMlogin.py:4). i think it takes previous program where it mentioned "Lunch chrome browser". so i did some changes like in 2nd program i cahnged at (U'chrome browser').change the browser name or the Phase and it runs successfully.
the original chrome browser is opened instead of chrome driver that's the reason of that error download chrome driver and give it's path

Getting Error while building mysql for python on Mac OS X El Capitan

I read some of the related topics and tried to implement those solutions to my situation but still I get the following error after this command :
(project2_env) Efe-MacBook-Air:MySQL-python-1.2.4b4 efe$ python setup.py build
The Error message is :
Extracting in /var/folders/rv/vbf7xqh1601_xjkrn85w7hp00000gn/T/tmpptpsggg7
Traceback (most recent call last):
File "/Users/efe/virtualenvs/downloads/MySQL-python-1.2.4b4/distribute_setup.py", line 143, in use_setuptools
raise ImportError
ImportError
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "setup.py", line 7, in <module>
use_setuptools()
File "/Users/efe/virtualenvs/downloads/MySQL-python-1.2.4b4/distribute_setup.py", line 145, in use_setuptools
return _do_download(version, download_base, to_dir, download_delay)
File "/Users/efe/virtualenvs/downloads/MySQL-python-1.2.4b4/distribute_setup.py", line 125, in _do_download
_build_egg(egg, tarball, to_dir)
File "/Users/efe/virtualenvs/downloads/MySQL-python-1.2.4b4/distribute_setup.py", line 99, in _build_egg
_extractall(tar)
File "/Users/efe/virtualenvs/downloads/MySQL-python-1.2.4b4/distribute_setup.py", line 486, in _extractall
self.chown(tarinfo, dirpath)
TypeError: chown() missing 1 required positional argument: 'numeric_owner'
Edit: I reinstalled homebrew, then I run this following command. That is successfully installed.
brew install mysql
However, I cannot still import MySQLdb in python.
As it is more complicated than the previous answer, i won't told you about the custom installation of python mysql.
Found this, the Jude's way :
Install mysql via homebrew, then you can install mysql python via pip.
xcode-select --install
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
//don't know how to install mysql via homebrew, but it should be done here
pip install MySQL-python
https://stackoverflow.com/a/25356073/6660122
Taken from the Python2 doc, still relevant in 3.5 :
"Alternate installation: the user scheme
This scheme is designed to be the most convenient solution for users that don’t have write permission to the global site-packages directory or don’t want to install into it. It is enabled with a simple option: "
python setup.py install --user
Could help in your case.
Notice there are different scheme to use : --home, or --prefix and --exec-prefix, or --install-base and --install-platbase
Finally I found a solution for myself and by myself. I gave up using directly MySQLdb library and instead of that, I installed PyMySQL. By the way I had already installed MySQL Workbench before, so mysql server was already running.
Here is what I do step by step. I hope someone can get benefit from it.
1) Create a virtual environment:
virtualenv virt1
2) Make your virtual environment activated:
source virt1/bin/activate
3) Now, you are in your virtual environment. Install PyMySQL:
pip install PyMySQL
4) Now, try whether your MySQL connection is OK or not with a simple py executable:
#!/usr/bin/python
import pymysql.cursors
# Connect to the database
connection = pymysql.connect(host='localhost',
user='YourDBuserName',
password='YourDBpassword',
db='YourDBname',
charset='utf8',
cursorclass=pymysql.cursors.DictCursor)
try:
with connection.cursor() as cursor:
# Read a single record
sql = "SELECT `id`, `name` FROM `YourTableName` WHERE `id`=%s"
cursor.execute(sql, (1,))
result = cursor.fetchone()
print(result)
finally:
connection.close()
5) You should see that your first row from the table appears on the screen.
Note: The part "import pymysql.cursors" could be tricky. First, I wrote as "import PyMySQL.cursors" and that didn't work!

Stanford Tagger in nltk not working due to JVM parameters

I am having a wired error while running following example code snippet
st = StanfordTagger('bidirectional-distsim-wsj-0-18.tagger')
st.tag('What is the airspeed of an unladen swallow ?'.split())
The first line worked properly but second line is giving following error.
Could not create the Java virtual machine.
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python2.6/dist-packages/nltk-2.0.1rc1- py2.6.egg/nltk/tag/stanford.py", line 51, in tag
return self.batch_tag([tokens])[0]
File "/usr/local/lib/python2.6/dist-packages/nltk-2.0.1rc1-py2.6.egg/nltk/tag/stanford.py", line 77, in batch_tag
stdout=PIPE, stderr=PIPE)
File "/usr/local/lib/python2.6/dist-packages/nltk-2.0.1rc1-py2.6.egg/nltk/internals.py", line 166, in java
raise OSError('Java command failed!')
OSError: Java command failed!
I have tried adding .usr/lib/jvm into path but still not working
It wasn't working for me either. So I tried the following and its working perfectly.
st = POSTagger('path-to/stanford-postagger-full-2012-07-09/models/wsj-0-18-left3words.tagger','path-to/stanford-postagger-full-2012-07-09/stanford-postagger.jar')
and use nltk's tokenize method instead of Python's split()
taggedSentence= st.tag(nltk.word_tokenize(sentence))
I see that question is very outdated, but this days I got same error for unknown reason. It gives me a lot of headache. But I found solution.
First, I installed Oracle Java (here is instructions: How To Manually Install Oracle Java on a Debian or Ubuntu VPS)
Now, my python script told me more information on error. It outputs something like:
Forking JVM: error=12, Cannot allocate memory or error=12, Not enough space
Here you can read more about such problem: Forking the JVM
And to avoid that annoying error I need to edit /etc/sysctl.conf and add the following:
vm.overcommit_memory = 1
Then restart system for the change to take effect.