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oVirt reports using Grafana
by Karli Sjöberg 15 Jul '18

15 Jul '18

Heya! I've been whishing for reports in oVirt ever since the old 'Jasper Reports' was removed. For an Enterprise, having pretty graphs to look at is a must. Searching the subject, I've found this[*] and have managed to get it installed OK but having issues trying to follow the guide setting it up. First of all, I think the guide should have at least mentioned that 'pg_hba.conf' needs to be edited for the read only user to be able to connect to the database, I scratched my head around that for a while before I got it. When I first type in the query example, I got syntax errors: 'pq: syntax error at or near "$"'. I continued anyways since I figured it would be solved at a later point, which turned out to be true, since the next step is to use the "Templating feature" to add variables. Unfortunately this doesn't go so well, even though I followed the instructions very carefully. After hitting save on the first variable I am rewarded with the error message: 'Template variables could not be initialized: pq: column "en_us" does not exist.' Are the queries stated in the guide still correct? This is for 'user_locale': "SELECT DISTINCT language_code from enum_translator" [*]:https://www.ovirt.org/blog/2018/01/ovirt-report-using-grafana/ TIA /K

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new setup would like some advise on implementetion
by Georgios Vasilopoulos 14 Jul '18

14 Jul '18

Hello! I would like to read your thoughts regarding a new implementation we are about to do at work Our infrastructure is as follows There are 9 servers who will be used for running vm's Network is 2x10G + 4x1G ethernet per server each has 2x 10C xeon processors and 192GB RAM and 2x 300GB 10K Enterprise SAS 6Gbps, Hot Swap HDD There are 3 servers who will be used for storage. Network is 2x10G + 4x1G ethernet per server each has 2x 8c Xeon processors with 128GB RAM 2x 300GB 10000RPM, 2.5", Serial Attached SCSI (SAS), Hot Swap 6x 200GB WesternDigital HGST ultrastar HUSMM1620ASS200 ssd Each server has a jbod box connected to the server through sas interface 12x 4TB The ovirt installation is expected to run 250-200 VM's on maximum load. Expected to run on a big VM there is our mail server which is pretty loaded, has about 50000 registred users and about half of them are pretty active. What I'm currently thinking is : have hosted vm on compute servers storage, as a stand alone non managed volume of about 150GB. but I would like the engine to be stored on more than 3 servers. Any thoughts ? On the vm storage since high availability is a must I will probably set the servers in raid6 with a spare each and then I will do 3 volumes(2 data bricks + 1 arbiter brick on each server) on glusterfs replica 3 arbiter 1. This will give me about 36TB usable per storage server. I'm highly concerned on how glusterfs will perform regarding the email server. Right now email server is on a vm running on KVM and it gets it's storage from an EMC storage. I'm not expecting Gluster to perform as the EMC storage but I would like to know if it can handle it. I'm thinking of dedicating a gluster volume exclusively Is it better to give to the email vm the gluster volume as a disk(s) from ovirt or directly mount it through the vm? ovirt will force the use of gfapi if I set it on the engine. on the other hand if I use this, how sharding will perform. On the other hand, If I mount it as a glusterfs volume directly on the vm how will it perform through fuse? I have 6x200gb ssd's per storage server. Will it do any good to add these as a tiering volume? What should the shard block size be in that case should it be smaller to utilise the ssd's better ? Will performance be better if I use ceph through iscsi with multipath? I read that ceph needs more nodes to perform suitably and that iscsi adds considerable overhead. I'd love to read your thoughts on this.

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Problem with following host link for vm list using Java SDK.
by dchambers＠bugfixer.net 13 Jul '18

13 Jul '18

When trying to do VM list using the 4.2.4 Java SDK against a 4.2.4 engine, I am getting an error while trying to follow the host link to get host info. Any suggestions on fixing this? List<Vm> vms = vmsService.list() .follow("host") .send().vms(); Exception in thread "main" org.ovirt.engine.sdk4.Error: Failed to send request at org.ovirt.engine.sdk4.internal.HttpConnection.send(HttpConnection.java:255) at org.ovirt.engine.sdk4.internal.HttpConnection.send(HttpConnection.java:229) at org.ovirt.engine.sdk4.internal.services.VmsServiceImpl$ListRequestImpl.send(VmsServiceImpl.java:563) at org.ovirt.engine.sdk4.internal.services.VmsServiceImpl$ListRequestImpl.send(VmsServiceImpl.java:477) at com.foo.ovirt.test.VMList.main(VMList.java:59) Caused by: org.ovirt.engine.sdk4.Error: The response content type 'text/html;charset=UTF-8' isn't the expected XML at org.ovirt.engine.sdk4.internal.HttpConnection.checkContentType(HttpConnection.java:287) at org.ovirt.engine.sdk4.internal.HttpConnection.send(HttpConnection.java:251) ... 4 more

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Host reboot failed
by Nicolas Ecarnot 13 Jul '18

13 Jul '18

Hello, [oVirt 4.2.4.5-1.el7] Sequence : - Among 7 active UP hosts, one of them runs zero VM - On this (still in UP state) host, I run a SSH-restart via the web GUI - The host gracefully shuts down then reboots, with no issue - In the web GUI, as in real life, the host stays in Reboot state forever A this point, the engine can ping it, can ssh-connect to it, the host seems to have zero issue. In the web GUI, I can not put it into active state because it is not in maintenance state. It stays in reboot state. I can not either put it in maintenance state because it stays in reboot state. This state lasts long enough to allow me type this mail, look into logs, and as I was about to send logs, I see the host is returning to life (its states comes back as UP). I don't type fast, so after the host has finished rebooting, maybe 5 or 10 minutes have passed before the engine links again to the host. Before posting additional logs and comments, does anybody know if this is a know bug or behavior, or do I have to open a BZ? Regards, -- Nicolas ECARNOT

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Re: NFS Mount on EMC VNXe3200 / User - Group 36:36 / Permission issue
by Karli Sjöberg 12 Jul '18

12 Jul '18

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ovirt 3.5 fail to start on centOS 6.9
by dinushawww＠gmail.com 12 Jul '18

12 Jul '18

Hi, After installing ovirt 3.5 on centOS6.9 the ovirt-engine has stopped. while restarting the engine the error comes "/usr/share/jboss-as" not found. I installed jboss-as7.7.7final and again restart ovirt-engine. now it says ovirt-engine started, but when i checj the status, it shows ovirt-engine stopped, but PID file exist. Please help me to solve this. because i want to crate a lab using 3.5 for my exam. Thank You Dinusha

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Installing ovirt 3.6 on centOS 6.9 error
by dinushawww 12 Jul '18

12 Jul '18

Hi, After install ovirt 3.5 on centOS 6.9, the ovirt engine has stopped. while trying to start ovirt-engine it will say /usr/share/jboss-as not found. i manually download jboss 7.1.1 final and installed in /usr/share and again start the oviert-engine, this time it will start and then run the command service ovirt-engine status, ovirt-engine stopped, pid file exist. please help me to solve. i need to crate a lab using ovirt 3.5. Thank You Dinusha

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VDI - SPICE zero clients
by cmcl＠dneg.com 11 Jul '18

11 Jul '18

Hi, I gt hold of a 10zig V1200-P for testing VDI under ovirt/RHEV, as I'd read that they support SPICE. However, I haven't found how to connect it successfully to a VM as yet. Has anyone had any experience with these using ovirt/RHEV? I haven't been able to find any manuals or support info on the 10zig website regarding these V1200-P zero clients. I've read that they are discontinuing SPICE support in the future, but I just need to be able to demonstrate it working for now. Thanks for any help, Cam

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Console issues in a distributed environment over NAT
by shailigum＠gmail.com 11 Jul '18

11 Jul '18

Hi all, i'm trying to deploy oVirt to manage multiple 'data centers' (really just very basic deployments of single hosts using local storage that are deployed in varying geographic locations), where each host/resource pool is (unfortunately) only accessible via NAT. I've setup port-forwards for all functions, including SPICE/VNC, but am running into issues with the 'console' button in the GUI. When I initially added the host I added it using the NAT IP, however when trying to connect to console the console.vv file generated from the GUI references the local (private) IP of the host, instead of the NAT IP of the upstream firewall - so I have to manually open the file to change it to the NAT IP in order to connect to a VM's console. This is a minor annoyance for me, but it does ultimately the tool will be used by others who are less comfortable with steps like these. Is there a way around this, to have the console.vv generate with the IP oVirt is using to connect to the host, instead of its discovered local IP? Also if you can think of any other concerns I may encounter in a NAT deployment like this, please share! Thanks!

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NFS Mount on EMC VNXe3200 / User - Group 36:36 / Permission issue
by jeanbaptiste.coupiac＠nfrance.com 11 Jul '18

11 Jul '18

Hello, I try to mount an NFS Data share from a EMC VNXe3200 export. Unfortunately, NFS share cannot be mount, there is permission error. (Indeed, after the same issue on another NFS ISO repo, I've change exported directory user/group to 36:36, and O-Virt NFS mount was great). So, I think issue with my VNXe3200 is regarding UID / GID owner on VNXe3200 side. After webex with EMC support, change owner / permission on VNXe side seems not possible / supported. Can I mount the NFS share with some options to avoid vdsm:kvm mounting issue ? Can I force mount with root ? Regards, Jean-Baptiste COUPIAC

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