Initialising connection "conn = PyU4V.U4VConn()" failed

[seckjun-song-otsk]

Hello,

Thank you for your endeavor for PyU4V.
To monitor PowerMAX, VMAX performance, I would like to use PyU4V.
Even though I followd guide of "https://pyu4v.readthedocs.io/en/latest/quick_start.html", but failed.
May I have your advice to fix this situation ?
Thank you.

b.rgds

//
// Summary
//

1. Network connection & username, password: OK
2. Installation of PyU4V: OK
3. Creating conf file: OK
4. Initialising the connection with Unisphere use: Failed
   With below msg
   "PyU4V.utils.exception.VolumeBackendAPIException: Bad or unexpected response from the storage volume backend API: Error GET None. The status code received is 500 and the message is {'message': 'The server encountered an unexpected condition which prevented it from fulfilling the request'}."

//
// Detail
//

1. network connectivity
   $ping -c 1 10.65.224.185
   PING 10.65.224.185 (10.65.224.185) 56(84) bytes of data.
   64 bytes from 10.65.224.185: icmp_seq=1 ttl=125 time=99.0 ms

--- 10.65.224.185 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 98.981/98.981/98.981/0.000 ms

2. port 8443 connection
   $telnet 10.65.224.185 8443
   Trying 10.65.224.185...
   Connected to 10.65.224.185.
   Escape character is '^]'.

3. SSL Certificate
   $ openssl s_client -showcerts -connect 10.65.224.185:8443 </dev/null 2>/dev/null|openssl x509 -outform PEM > unisphere90.pem

adding the cert to a CA certificate bundle
$ sudo cp unisphere90.pem /usr/share/ca-certificates/unisphere90.crt
$ sudo dpkg-reconfigure ca-certificates

4. SETUP
   $ cat PyU4V.conf
   [setup]
   username=monitor
   password=******** (intentionally changed for security)
   server_ip=10.65.224.185
   port=8443
   array=00029780**** (intentionally changed for security)
   verify=True

$ pip show PyU4V
Name: PyU4V
Version: 10.1.0.0
Summary: A Python library for use with Dell EMC's Unisphere for PowerMax REST API.
Home-page: https://github.com/dell/PyU4V/
Author: Dell Inc. or its subsidiaries
Author-email: helen.walsh@dell.com
License: Apache 2.0
Location: /home/sjsong/.local/lib/python3.8/site-packages
Requires: six, requests, sphinx-rtd-theme, prettytable, urllib3
Required-by:
$

$ python3 -V
Python 3.8.10
$

$ python3
Python 3.8.10 (default, May 26 2023, 14:05:08)
[GCC 9.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.

import PyU4V
conn = PyU4V.U4VConn()
Traceback (most recent call last):
File "", line 1, in
File "/mnt/c/Users/seckjun.song/UBUNTU/EMC/PyU4V/PyU4V/univmax_conn.py", line 124, in init
self.validate_unisphere()
File "/mnt/c/Users/seckjun.song/UBUNTU/EMC/PyU4V/PyU4V/univmax_conn.py", line 187, in validate_unisphere
uni_ver, major_ver = self.common.get_uni_version()
File "/mnt/c/Users/seckjun.song/UBUNTU/EMC/PyU4V/PyU4V/common.py", line 523, in get_uni_version
response = self.get_resource(category=VERSION, no_version=True)
File "/mnt/c/Users/seckjun.song/UBUNTU/EMC/PyU4V/PyU4V/common.py", line 339, in get_resource
return self.get_request(
File "/mnt/c/Users/seckjun.song/UBUNTU/EMC/PyU4V/PyU4V/common.py", line 313, in get_request
self.check_status_code_success(operation, sc, message)
File "/mnt/c/Users/seckjun.song/UBUNTU/EMC/PyU4V/PyU4V/common.py", line 180, in check_status_code_success
raise exception.VolumeBackendAPIException(
PyU4V.utils.exception.VolumeBackendAPIException: Bad or unexpected response from the storage volume backend API: Error GET None. The status code received is 500 and the message is {'message': 'The server encountered an unexpected condition which prevented it from fulfilling the request'}.

[rawstorage]

What version of Unisphere for PowerMax are you running? PyU4V 10.1 needs version 10.1, some older versions may fail the version check.

[seckjun-song-otsk]

Hi Paul Martin,

Thank you for your comment.
With you comment, I just checked the version.
"Unisphere for PowerMax
Version Number: V9.0.2.19"

I will update Unisphere for PowerMax version to the latest version.
(downloading "UNIVMAX_10.1.0.1_RELEASE_WINDOWS_X86_64.exe" file from Dell)
and then back here with the result.

Thank you again for your time.

b.rgds

[rawstorage]

Thanks, the error message should have been clearer, if you are upgrading Unisphere you will first need to upgrade solutions enabler as your upgrade will fail otherwise.