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[Qlustar-General] qluman-cli --gencert error
by rajendra.adhikari＠ku.edu.np 11 Nov '19

11 Nov '19

Dear All, Please help me the problem with not able to generate qluman --gencert. The output is as below: Sincerely, Rajendra Adhikari qluman-cli --gencert ERROR:qlunet.Node:router is not responding to pings: reconnecting ERROR:qlunet.Node:Node.run(): exiting after exception Traceback (most recent call last): File "/usr/lib/python3/dist-packages/qlunet/Node.py", line 333, in run timeout = self._queue.next() File "/usr/lib/python3/dist-packages/qlunet/Timeout.py", line 143, in next item.expired(self) File "/usr/lib/python3/dist-packages/qlunet/Node.py", line 79, in expired self._node.slave_reset_keys() File "/usr/lib/python3/dist-packages/qlunet/Node.py", line 994, in slave_reset_keys self._monitor.setsockopt(zmq.LINGER, 0) AttributeError: 'NoneType' object has no attribute 'setsockopt' ERROR:qlunet.Node:Network thread is quiting on us

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[Qlustar-General] Re: Problem to start qluman-qt : sqlite3 vs mysql
by Roland Fehrenbacher 05 Nov '19

05 Nov '19

>>>>> "A" == Alain EMPAIN <alain.empain(a)ulg.ac.be> writes: A> Hello Roland, thanks for the fast answer.. Indeed, just this A> command allows to start qlustar-qt Great, thanks for the confirmation. Fixed packages + singularity container are already uploaded. Please update your head-node as well, since another bug in the RXengine has been fixed. A> Have a nice day, Thanks, same to you. A> PS: I am very interested into Qlustar : it brings a fresh view on A> cluster management with respect to ROCKS. Before ROCKS, I was A> handling everything by hand (cluster itself, Condor, SGE, Torque A> engines...), so it was already a nice step towards ! Always great to hear positive statements. A> Here at the Liège University, and at the CECI consortium (Walloon A> Region), every clusters run SLURM and the official clusters are A> dealt with the commercial offer BRIGHT. I am building a fresh new A> cluster with Qlustar and old nodes, retired because we do not A> have maintenance contracts anymore for them ! I do not want to A> discard yet working machines, so I profit to experiment and to A> deploy Qlustar on a prototyping cluster, in the back of the deep A> basement of our Univ. Hospital ;-) Thanks for sharing your approach. I fully understand that one needs to follow a very conservative approach when trying to replace an existing working setup. Good luck with this. I'd be happy to hear more about your progress in the future here. Best, Roland A> From: "Roland Fehrenbacher" <rf(a)q-leap.de> To: "QLUSTAR A> General" <qlustar-general(a)qlustar.org> Sent: Tuesday, 5 A> November, 2019 09:46:15 Subject: [Qlustar-General] Re: A> Problem to start qluman-qt : sqlite3 vs mysql >>>>>> "A" == Alain EMPAIN <alain.empain(a)ulg.ac.be> writes: A> Hi Alain, A> Hello, I am discovering Qlustar (being a ROCKS admin since a long A> time). My first test with Qlustar 10.x was sucessful; qluman-qt A> started correctly, I browsed the windows with no problem. A> happy to see you trying Qlustar. A> I reinstalled everything from scratch to run Qlustar 11, A> installed qluman-qt with apt install and using the singularity A> image : both version give the error A> (...) File A> "/usr/lib/python3/dist-packages/sqlalchemy/engine/default.py", A> line 393, in connect return self.dbapi.connect(*cargs, **cparams) A> sqlalchemy.exc.OperationalError: (sqlite3.OperationalError) A> unable to open database file A> I wonder why SQLITE3 is invoqued because during the installation, A> there was a prompt for mysql root's password. A> The sqlite DB is a new feature we introduced with the latest A> updates to store user commands executed via the RXengine A> in. We assume that you discovered a small bug that we will A> fix shortly. As a work around you can try to execute A> $ mkdir $HOME/.config/Qluman A> This is where the sqlite DB should be stored and if the dir A> doesn't exist it will fail. Can you please let us know A> whether this fixes your problem? A> Best, A> Roland _______________________________________________ A> Qlustar-General mailing list -- qlustar-general(a)qlustar.org A> To unsubscribe send an email to A> qlustar-general-leave(a)qlustar.org --

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[Qlustar-General] Problem to start qluman-qt : sqlite3 vs mysql
by Alain EMPAIN 05 Nov '19

05 Nov '19

Hello, I am discovering Qlustar (being a ROCKS admin since a long time). My first test with Qlustar 10.x was sucessful; qluman-qt started correctly, I browsed the windows with no problem. I reinstalled everything from scratch to run Qlustar 11, installed qluman-qt with apt install and using the singularity image : both version give the error (...) File "/usr/lib/python3/dist-packages/sqlalchemy/engine/default.py", line 393, in connect return self.dbapi.connect(*cargs, **cparams) sqlalchemy.exc.OperationalError: (sqlite3. OperationalError) unable to open database file I wonder why SQLITE3 is invoqued because during the installation, there was a prompt for mysql root's password. MariaDB is running, and a Qlustar Database exists and populated : mysql -p Enter password: Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 48 Server version: 10.1.41-MariaDB-0ubuntu0.18.04.1 Ubuntu 18.04 Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. MariaDB [(none)]> use Qlustar; Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed MariaDB [Qlustar]> select * from Users; +----+-------+--------+---------------+----------------+------------------------------------------------+---------------------+ | id | name | passwd | real_name | email | info | last_changed | +----+-------+--------+---------------+----------------+------------------------------------------------+---------------------+ | 1 | admin | $......| Admin account | root@localhost | Admin user | 2019-11-05 08:49:36 | | 2 | root | $......| cli user | root@beosrv-c | user used by the qluman command line interface | 2019-10-30 10:57:10 | +----+-------+--------+---------------+----------------+------------------------------------------------+---------------------+ 2 rows in set (0.00 sec) Any clue will be welcome ! Thanks Alain --- Dr Alain EMPAIN, Bioinformatics University of Liège CHU, GIGA-R (B34, +1), alain.empain(a)uliege.be Rue des Martyrs, 11 B-4550 Nandrin Mobile: +32 497 701764 HOME:+32 85 512341

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[Qlustar-General] Feature Update 10/19 - QluMan RXEngine 2.0 / CentOS 7.7
by Roland Fehrenbacher 01 Nov '19

01 Nov '19

A large number of new exciting Qlustar features were completed recently and published as ** Feature Update 10/19 **. Most prominent is RXengine 2.0, a complete redesign of the QluMan Remote Execution engine. Non-QluMan related major new stuff includes the move to CentOS 7.7. Check out all the details at https://www.qlustar.com/news/qluman-rxengine-20-feature-update-1019

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[Qlustar-General] Security/Bug fix releases 11.0.0.4-b515f1270 / 10.1.1.8-b509f1268
by Roland Fehrenbacher 30 Oct '19

30 Oct '19

The Qlustar releases 11.0.0.4-b515f1270 and 10.1.1.8-b509f1268 are ready including a number of security and bug fixes. Please check the following web pages for details about security fixes: https://qlustar.com/news/qsa-1024191-linux-kernel-vulnerabilities https://qlustar.com/news/qsa-1024192-security-update-bundle A number of non-security related enhancements were also part of this update and will be introduced in a separate announcement.

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[Qlustar-General] run command after boot as specific user
by ignas.bunikis＠scilifelab.uu.se 15 Jul '19

15 Jul '19

Hej, What would be the best way to execute command after boot, as a specific user, only on VFend? Cheers, iggy

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[Qlustar-General] how to use roles to limit rights for some admins
by Rolandas 01 Jul '19

01 Jul '19

Hi, I want to limit rights for admins in qluman. I tried to create operator role and define minimal rights. I created user in qluman with such role and after connecting with him, I found it could do all admin tasks, even those denied by role rules. What I'm doing wrong ? Regards Rolandas

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[Qlustar-General] cannot run updated qluman gui
by Rolandas 27 Jun '19

27 Jun '19

Hi, ERROR : Unknown image format/type: qluman-10.1.1.23-singularity.sqsh ABORT : Retval = 255 singularity-container package is from ubuntu 19.04 repository: 2.6.1-2 Previous version qluman-10.1.1.19-singularity.sqsh works. MD5/SHA256 were verified and are the same as in qlustar dowanload page. Regards, Rolandas

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[Qlustar-General] Support for Intel MIC Xeon Phi
by Roberto Rey Expósito 27 Jun '19

27 Jun '19

Hi, I wonder if it is possible to have Xeon Phi hardware on a Qlustar-based cluster. I cannot see any module related with Xeon Phi during head node installation as it is the case for GPU or InfiniBand hardware, so the resulting CentOS image for compute nodes does not recognize the cards. Thanks, -- Roberto R. Expósito Grupo de Arquitectura de Computadores (GAC) Depto. Ingeniería de Computadores Universidade da Coruña (UDC)

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[Qlustar-General] Qlustar server in HA mode
by darkhalf78＠gmail.com 25 Jun '19

25 Jun '19

Hello, sorry if the question has been already discussed in previous threads, but i was wondering if there is a guide on how to configure two physical servers in HA mode as stated in the Administration Manual "In case of a HA head-node setup, the second head-node becomes a NIS slave server. " I configured the second server as NIS slave, but i'm more interested into a redundant configuration with drbd for the whole server. I'm trying to configure drbd to mirror all the partitions/LV on the second server using LCMC but with no success. Any guide or hint is very welcome :) Thanks a lot !

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