VmBackup.py: script doesn't work for me. Could You help, please #59

Burzump · 2017-11-15T12:02:53Z

Hi! Could someone help, please? What's wrong? Script doesn't work for me. No complite backup, no log in file.
Xenserver 7.0
VmBackup.py 3.22
Python 2.7.13

[root@Xen03 NAUbackup]# ./VmBackup.py XXXXXXXXXX OTRS preview
2017-11-15-(14:54:26) - VmBackup config loaded from: OTRS
2017-11-15-(14:54:26) - VmBackup.py running with these settings:
2017-11-15-(14:54:26) - backup_dir = /snapshots/BACKUPS
2017-11-15-(14:54:26) - status_log = /snapshots/NAUbackup/status.log
2017-11-15-(14:54:26) - compress = False
2017-11-15-(14:54:26) - max_backups = 2
2017-11-15-(14:54:26) - vdi_export_format = raw
2017-11-15-(14:54:26) - pool_db_backup = 0
2017-11-15-(14:54:26) - exclude (cnt)= 0
2017-11-15-(14:54:26) - exclude:
2017-11-15-(14:54:26) - vdi-export (cnt)= 0
2017-11-15-(14:54:26) - vdi-export:
2017-11-15-(14:54:26) - vm-export (cnt)= 1
2017-11-15-(14:54:26) - vm-export: OTRS
Traceback (most recent call last):
File "./VmBackup.py", line 1453, in
session.xenapi.login_with_password(username, password)
File "/snapshots/NAUbackup/XenAPI.py", line 248, in call
return self.__send(self.__name, args)
File "/snapshots/NAUbackup/XenAPI.py", line 141, in xenapi_request
self._login(methodname, params)
File "/snapshots/NAUbackup/XenAPI.py", line 165, in _login
result = _parse_result(getattr(self, 'session.%s' % method)(*params))
File "/usr/lib64/python2.7/xmlrpclib.py", line 1233, in call
return self.__send(self.__name, args)
File "/usr/lib64/python2.7/xmlrpclib.py", line 1587, in __request
verbose=self.__verbose
File "/usr/lib64/python2.7/xmlrpclib.py", line 1273, in request
return self.single_request(host, handler, request_body, verbose)
File "/usr/lib64/python2.7/xmlrpclib.py", line 1301, in single_request
self.send_content(h, request_body)
File "/usr/lib64/python2.7/xmlrpclib.py", line 1448, in send_content
connection.endheaders(request_body)
File "/usr/lib64/python2.7/httplib.py", line 1013, in endheaders
self._send_output(message_body)
File "/usr/lib64/python2.7/httplib.py", line 864, in _send_output
self.send(msg)
File "/usr/lib64/python2.7/httplib.py", line 826, in send
self.connect()
File "/usr/lib64/python2.7/httplib.py", line 1236, in connect
server_hostname=sni_hostname)
File "/usr/lib64/python2.7/ssl.py", line 350, in wrap_socket
_context=self)
File "/usr/lib64/python2.7/ssl.py", line 611, in init
self.do_handshake()
File "/usr/lib64/python2.7/ssl.py", line 833, in do_handshake
self._sslobj.do_handshake()
ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:579)
[root@Xen03 NAUbackup]#

thomasmck · 2017-11-15T12:32:28Z

Try changing session = XenAPI.Session('https://localhost/') on line 1452 to session = XenAPI.Session('https://localhost/', ignore_ssl=True) and see if that fixes it.

Burzump · 2017-11-15T12:46:59Z

Now get this:

Traceback (most recent call last):
File "./VmBackup.py", line 1452, in
session = XenAPI.Session('https://localhost/', ignore_ssl=True)
TypeError: init() got an unexpected keyword argument 'ignore_ssl'

thomasmck · 2017-11-15T12:52:02Z

Where did you get your version of XenAPI.py from? Can you try again with the XS 7.2 SDK version (They are backwards compatible) from https://www.citrix.com/downloads/xenserver/product-software/xenserver-72-standard-edition.html

Burzump · 2017-11-15T13:08:04Z

Now use XenAPI.py from XS 7.2 SDK and get:

[root@Xen03 NAUbackup]# ./VmBackup.py XXXXXXXXXX OTRS preview
2017-11-15-(16:02:19) - VmBackup config loaded from: OTRS
2017-11-15-(16:02:19) - VmBackup.py running with these settings:
2017-11-15-(16:02:19) - backup_dir = /snapshots/BACKUPS
2017-11-15-(16:02:19) - status_log = /snapshots/NAUbackup/status.log
2017-11-15-(16:02:19) - compress = False
2017-11-15-(16:02:19) - max_backups = 2
2017-11-15-(16:02:19) - vdi_export_format = raw
2017-11-15-(16:02:19) - pool_db_backup = 0
2017-11-15-(16:02:19) - exclude (cnt)= 0
2017-11-15-(16:02:19) - exclude:
2017-11-15-(16:02:19) - vdi-export (cnt)= 0
2017-11-15-(16:02:19) - vdi-export:
2017-11-15-(16:02:19) - vm-export (cnt)= 1
2017-11-15-(16:02:19) - vm-export: OTRS
Traceback (most recent call last):
File "./VmBackup.py", line 1452, in
session = XenAPI.Session('https://localhost/', ignore_ssl=True)
File "/snapshots/NAUbackup/XenAPI.py", line 136, in init
verbose, allow_none, context=ctx)
TypeError: init() got an unexpected keyword argument 'context'
[root@Xen03 NAUbackup]#

If delete ignore_ssl=True from VmBackup.py, get at the end:

Traceback (most recent call last):
File "./VmBackup.py", line 1453, in
session.xenapi.login_with_password(username, password)
File "/snapshots/NAUbackup/XenAPI.py", line 262, in call
return self.__send(self.__name, args)
File "/snapshots/NAUbackup/XenAPI.py", line 149, in xenapi_request
self._login(methodname, params)
File "/snapshots/NAUbackup/XenAPI.py", line 186, in _login
raise e
ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:579)
[root@Xen03 NAUbackup]#

thomasmck · 2017-11-15T13:55:14Z

ok well I'm fairly certain that the ignore_ssl=True part is needed to fix your original error (see xapi-project/xen-api#2100). From looking in XenAPI.py on line 136 we are calling the xmlrpclib. If that is not expecting the context argument then I imagine you are not using the correct version.

Looking at the xmlrpclib package page (https://docs.python.org/2/library/xmlrpclib.html) it looks like the context parameter was added in version 2.7.9 ("Changed in version 2.7.9: Added the context argument") so you will need to update to at least this version.

Burzump · 2017-11-15T14:00:33Z

Ok. Will try to downgrade Python to 2.7.9 version. At now use Python 2.7.13.
Thanks, thomasmck!

NAUbackup · 2017-11-15T14:04:16Z

Thanks for your help on this, @thomasmck ... I will try to take a look soon to see what version of XenApi.py and python I am running for comparison. Appreciate the feedback. I'm still on 7.1 and tests on 7.2 provide valuable insights.
--Tobias

styk-tv · 2018-04-02T23:39:57Z

So it actually works if you overwrite ssl settings before making the call, like this

        import ssl
        ssl._create_default_https_context = ssl._create_unverified_context
        self._xenSession = XenAPI.Session(self._dataXen.api_url)

3rd line is my session code, yours will be different.

gfiasco · 2019-05-21T08:13:56Z

change line 1456

https://github.com/NAUbackup/VmBackup/blob/master/VmBackup.py#L1456

        session = XenAPI.Session('https://localhost/')

to

      session = XenAPI.Session('http://localhost/')

dangbird · 2019-05-24T15:19:41Z

@gfiasco Thanks for this change, it worked for me. No issues with XenServer 7.6 but Version 8.0 that was just released threw this error:
ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:579)
changing to http://localhost from https allows the backup to run.

May need to add code to check version and switch from https to http or someone likely much smarter can advise a solution.

NAUbackup · 2019-06-21T22:03:59Z

I just released V3.24 and would be interested if this error still occurs. Thanks! If so, let me know and I can maybe catch the error and do a retry with http instead of https. Perhaps better, I could report this to Citrix as a bug.

sniperkitten · 2019-06-26T06:08:42Z

Hello!

Faced same issue today with Xen Server 8 and latest NAUbackup+XenAPI.py
Changing to http worked for me also: XenAPI.Session('http://localhost/')

Error messages before workaround:
Traceback (most recent call last): File "/snapshots/NAUbackup/VmBackup.py", line 1616, in <module> session.xenapi.login_with_password(username, password) File "/snapshots/NAUbackup/XenAPI.py", line 264, in __call__ return self.__send(self.__name, args) File "/snapshots/NAUbackup/XenAPI.py", line 151, in xenapi_request self._login(methodname, params) File "/snapshots/NAUbackup/XenAPI.py", line 188, in _login raise e ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:579)

Regards

NAUbackup · 2019-06-26T16:06:54Z

Sorry to hear that. I will take a look, perhaps create a fallback if https fails to then try http.
Thanks for the feedback! Citrix Hypervisor 8 seems to have some odd things happening in it, alas, and I'm sorry I have not had the time to thoroughly test the script out yet in that newer environment.

NAUbackup · 2019-06-26T19:43:12Z

Does importing also the ssl module near the top and changing the code to read

    ignore_ssl=True
    session = XenAPI.Session('https://localhost/')

still not work? Seems to at least under XS 7.X.

sniperkitten · 2019-06-27T10:36:16Z

Hi Added this line to VmBackup.py and got same error, so returned to http protocol

…

On Wed, 26 Jun 2019 at 22:43, NAUbackup ***@***.***> wrote: Does including ssl near the top and changing the code to read ignore_ssl=True session = XenAPI.Session('https://localhost/') still not work? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#59?email_source=notifications&email_token=AINTJEMIQGNLIKWETDCC72LP4PBFFA5CNFSM4ED3JD72YY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGODYUTPWI#issuecomment-506017753>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AINTJELLPAIPVRH7US2IWELP4PBFFANCNFSM4ED3JD7Q> .

LinKJeTT · 2019-06-27T14:20:42Z

i have the same error too, i started to try the scripts yesterday on the citrix 8.0, only works with http protocol

NAUbackup · 2019-06-27T19:27:15Z

Try substituting that call with the following expanded code:

# acquire a xapi session by logging in
try:
    username = 'root'
    ignore_ssl=True
    # try SSL connection
    session = XenAPI.Session('https://localhost/')
    #print "session is: %s " % session
    if session != "<ServerProxy for localhost/>":
       # fall back to plain http
       session = XenAPI.Session('http://localhost/')

    session.xenapi.login_with_password(username, password)

LinKJeTT · 2019-06-27T19:43:41Z

i'm sorry but what lines should I replace?

NAUbackup · 2019-06-27T19:49:31Z

Put that in place of the lines:

try:
username = 'root'
session = XenAPI.Session('https://localhost/')
session.xenapi.login_with_password(username, password)

Also, make sure you add ", ssl" to the line

import sys, time, os, datetime, subprocess, re, shutil, XenAPI, smtplib, re, base64, socket, threading

so that it reads:
import sys, time, os, datetime, subprocess, re, shutil, XenAPI, smtplib, re, base64, socket, threading, ssl

sniperkitten · 2019-06-28T05:08:33Z

Hi

Tried extended code, still same error
Though I'm new to python and not very reliable tester - had IndentationErrors initially)

Regards,
Alex

NAUbackup · 2019-06-28T05:23:58Z

Thank you, Alex, for the feedback. It runs fine as such under 7.1. I will take another look. I really need to get an instance up and running on my 8.0 test pool. I'd have done so sooner except I have to get the NFS networking sorted out.
--Tobias

dangbird · 2019-06-28T13:37:26Z

If you would like I have 8.0 fully patched on a box, with a tiny VM that backs up in a few seconds, mounted to NFS that I can IP Gate to your IP via SSH. Happy to let you play with the script on this as some small way of saying thank-you for all the efforts... Not a problem if you would like let me know.

NAUbackup · 2019-06-28T16:06:21Z

Thank you, Dan, I will keep that in mind if I cannot get something rigged up here soon. Your offer is much appreciated!

sniperkitten mentioned this issue Jul 11, 2019

Citrix Hypervisor 8.0.0, VmBackup #94

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VmBackup.py: script doesn't work for me. Could You help, please #59

VmBackup.py: script doesn't work for me. Could You help, please #59

Burzump commented Nov 15, 2017

thomasmck commented Nov 15, 2017

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VmBackup.py: script doesn't work for me. Could You help, please #59

VmBackup.py: script doesn't work for me. Could You help, please #59

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