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[Qlustar-General] Cannot add nodes from DHCP detect / how to authenticate users via Active Directory? / how to add my "scratch" NAS?
by Jarett DeAngelis 19 Feb '20

19 Feb '20

Hi folks, I was able to get my head node installed and can now boot it via the YUMI Linux installer USB. (I still don’t know why this is necessary, but hey, it works.) Now I have two issues: How do I add nodes to the cluster? I tried doing this with qluman-qt. I go to Manage Hosts and New Hosts, where it sees the MAC from one of my nodes. If I try to add it to the cluster I get a SQL error from Python about how it cannot insert a new record without the “status” field. Like so: If I click either “Add Selected” or “Add Host” here, I get this: Which seems to be generated from this SQL insert: The procedure for adding hosts actually doesn’t seem to be documented anywhere. I thought maybe I could try it from the command line, but there also doesn’t seem to be any documentation for the qluman-cli utility. I’m not entirely sure how the host abstraction works in Qlustar. My front-end/head node’s hostname is “argo,” yet the only thing in the host database visible in qluman-qt that seems to map to this is “beosrv-c.” Where did that name come from? The next steps I would like to get to are as follows: Add my two compute nodes to the cluster Add the NFS NAS I built to be a “scratch” filesystem available across all nodes Install some bioinformatics software (a good resource for this in Qlustar would be a big help) Make the cluster able to authenticate users via an Active Directory instance — I have a hard time understanding users in Qlustar. There is a very brief blurb in the administration guide about sssd.conf being replicated to each machine in the cluster, but the hostname in SSSD would have to be different for each node, so I don’t think that works for AD unless Qlustar is doing some kind of templating with the names. The other issue here is that when you join Linux machines to Active Directory and users log in, no entry is created in /etc/passwd, so if user process work is being kept track of with those, it won’t work. Unless the typical method for authenticating users is to use “plain” LDAP somehow without actually performing an AD join and just manually creating users that are then only authenticated against LDAP, and replicated between hosts normally because they’re “regular” UNIX users? That would also be fine; the problem here is that I can’t figure out how users are supposed to work. I added a user via qluman-qt and it appears not to have been added to /etc/passwd either, and since I have not yet configured SSSD I can’t figure out what those users are for. I can’t log in to SSH with them. I know that’s a lot at once; TIA. Jarett

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[Qlustar-General] Re: Can't install
by Roland Fehrenbacher 19 Feb '20

19 Feb '20

>>>>> "J" == Jarett DeAngelis <jarett(a)bioteam.net> writes: J> I mean it just isn't an option. The attached is what I get if I J> turn UEFI options off entirely. It doesn't recognize the drive as J> bootable. If I turn UEFI options on, the USB drive is there, but J> of course doesn't work. Have you turned 'secure boot' off? If not please try that.

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[Qlustar-General] Qlustar Feature Update 02/20
by Roland Fehrenbacher 13 Feb '20

13 Feb '20

A number of new Qlustar features were completed recently and published together with the latest security updates ([1], [2]). QluMan 11.0.3.1 has the following new capabilities: * The 'Write Files' dialog [3] got a complete revamp: + The configuration files/links belonging to different QluMan 'Config Classes' are now neatly arranged in a single collapsible tree-view. + Colored LEDs have been introduced to indicate whether pending changes of the config files are waiting to be written and which files are affected. + It is now straightforward to cycle through the list of changed files exclusively, allowing for a fast overview of pending changes in diff format. + Selecting individual Config Classes to be written has become a lot simpler by providing checkboxes in the tree-view. + Overall, the new dialog greatly enhances the clarity of the cluster configuration space. It provides way better control and confidence when performing configuration changes. * Messages for config file writing have been added to the QluMan Log Viewer [4]. * The so-called QluMan 'save-button interface' was improved and implemented for the editing of command names in the Command Editor. Now name labels turn green when changed and black after being saved, improving transparency. If you use QluMan singularity images, make sure you download [5] the latest version. [1] https://www.qlustar.com/news/qsa-0210201-linux-kernel-vulnerabilities [2] https://www.qlustar.com/news/qsa-0210202-security-update-bundle [3] https://docs.qlustar.com/en-US/Qlustar_Cluster_OS/11.0/html-single/QluMan_G… [4] https://docs.qlustar.com/en-US/Qlustar_Cluster_OS/11.0/html-single/QluMan_G… [5] https://qlustar.com/download

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[Qlustar-General] 2nd stage configuration failed at the first step.
by mohd.farid.ismail＠yandex.com 20 Jan '20

20 Jan '20

Hi, I'm having trouble getting pass the 1 boot process, which is to run /usr/sbin/qlustar-initial-config. After entering a name for the cluster, I always get the error HTTP access to the Qlustar repository is not possible Please check your curent network settings (received from DHCP): enp9s0: ..... Kernel IP routing table . . . Once you have made the required modifications, restart /usr/sbin/qlustar-initial-config! I can access the network (sshing to another machine), but cannot ping. It seems the DNS cannot be resolved (ping www.google.com results in the error "Temporary failure in name resolution.") Any hint on what I did wrong?

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[Qlustar-General] Security/Bug fix releases 11.0.0.6-b515f1278 / 10.1.1.10-b509f1277
by Roland Fehrenbacher 09 Jan '20

09 Jan '20

The Qlustar releases 11.0.0.6-b515f1278 and 10.1.1.10-b509f1277 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-0109201-linux-kernel-vulnerabilities https://qlustar.com/news/qsa-0109202-security-update-bundle The following non-security related enhancements/bug fixes are included: * Qlustar 11.0.0.6-b515f1278 fixes a bug in disk setup configurations for netboot nodes using XFS on LVM

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[Qlustar-General] upgrading qlustar from 10.1.1 to 11.0
by Tobias Moehle 08 Jan '20

08 Jan '20

Dear all, First of all I'd like to wish all developers/maintainers and users a happy new year and all the best. I know I am quite late with this topic, but other things distracted me so-far: I'd like to finally upgrade our cluster to 11.0. According to the upgrade instructions (https://docs.qlustar.com/en-US/Qlustar_Cluster_OS/11.0/html-single/Release_…) it is more or less an apt distupgrade; but since there are a lot of changes and I have very bad experience trying to upgrade merely ubuntu-versions (which usually breaks), I can't believe it is so simple? So I'd like to ask whether it is really as simple and what your experiences are? Any caveats, things to keep in mind? Can I do it while calculations are running or should I rather wait for all of them to finish (we have run-times of months, therefore this is a thing in my case). Any advice/comment is very welcome. Best regards, Tobias

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[Qlustar-General] HDD requirements
by mohd.farid.ismail＠yandex.com 07 Jan '20

07 Jan '20

Hi, I was looking at the hardware requirement, and am wondering how strict is the hard disc 160GB or bigger in size requirement. What I mean is, lets say if I use a smaller than 160GB disc, will the installation stop itself, or will it install anyway but with problems later down the road? --farid

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[Qlustar-General] Can't install
by Jarett DeAngelis 17 Dec '19

17 Dec '19

Hi, I have a small collection of Skylake HP desktops I'm deploying Qlustar onto as a lab environment. I cannot get the system to boot correctly. I'm using the Windows utility "Rufus" to image the USB stick. If I use "dd" mode, when I try to boot it skips right over it as though it weren't bootable. If I use "iso" mode, it gets about six seconds into the boot process, loading modules, before it complains it can't load the vfat module. It is indeed not in /lib! I feel like I must be doing something wrong here, but damned if I can figure it out solo. I have also tried this on a Mac and on a Linux machine with BalenaEtcher; same results as "iso" mode on Rufus. Hope everyone is having a good weekend! Jarett

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[Qlustar-General] QluMan bugfix update 11.0.2.10
by Roland Fehrenbacher 17 Dec '19

17 Dec '19

A bug was discovered in the recently uploaded QluMan GUI version 11.0.2.8 that prevents the addition of new hosts. The bug is fixed in the most recent version 11.0.2.10. Please download the updated QluMan GUI singularity image 11.0.2 at https://qlustar.com/download that includes the fixed version.

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[Qlustar-General] Re: Error: No such user: 'admin'
by Roland Fehrenbacher 13 Dec '19

13 Dec '19

>>>>> "TM" == Tobias Moehle <tobias.moehle(a)uni-rostock.de> writes: TM> Hi Roland, yes, with the newest version everything worked TM> without any problems. Great, thanks for the confirmation. Best, Roland

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