[ovirt-users] Re: Possible to use Console via Mac web browser?

[Maton, Brett]

Also works with Firefox, thanks.

On 2 August 2018 at 23:34, Jayme  wrote:

> I got it working in chrome by setting spice+vnc then selecting the novnc
> option in the console options
>
> On Thu, Aug 2, 2018, 6:50 PM Christophe TREFOIS, <
> christophe.tref...@uni.lu> wrote:
>
>> I guess there are console options, where you can set HTML5 now.
>>
>>
>>
>> Check on the small “arrow” next to the console icon.
>>
>>
>>
>> *From:* Jayme 
>> *Sent:* jeudi 2 août 2018 01:02
>> *To:* users 
>> *Subject:* [ovirt-users] Possible to use Console via Mac web browser?
>>
>>
>>
>> I recall in the past (on a bit older of an oVirt build) I was able to
>> launch VM consoles from my web browser.  I believe it may have been using
>> spice html5 at the time, is this still possible?  Currently launching
>> console downloads the typical .vv file.
>>
>>
>>
>> What is currently the best/easiest method to access VM consoles using
>> MacOS?
>>
>
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[ovirt-users] Re: Tuning and testing GlusterFS performance

[Jayme]

Bill,

I thought I'd let you (and others know this) as it might save you some
headaches.  I found that my performance problem was resolved by clicking
"optimize for virt store" option in the volume settings of the hosted
engine (for the data volume).  Doing this one change has increased my I/O
performance by 10x alone.  I don't know why this would not be set or
recommended by default but I'm glad I found it!

- James

On Thu, Aug 2, 2018 at 2:32 PM, William Dossett 
wrote:

> Yeah, I am just ramping up here, but this project is mostly on my own time
> and money, hence no SSDs for Gluster… I’ve already blown close to $500 of
> my own money on 10Gb ethernet cards and SFPs on ebay as my company frowns
> on us getting good deals for equipment on ebay and would rather go to their
> preferred supplier – where $500 wouldn’t even buy half a 10Gb CNA ☹  but
> I believe in this project and it feels like it is getting ready for
> showtime – if I can demo this in a few weeks and get some interest I’ll be
> asking them to reimburse me, that’s for sure!
>
>
>
> Hopefully going to get some of the other work off my plate and work on
> this later this afternoon, will let you know any findings.
>
>
>
> Regards
>
> Bill
>
>
>
>
>
> *From:* Jayme 
> *Sent:* Thursday, August 2, 2018 11:07 AM
> *To:* William Dossett 
> *Cc:* users 
> *Subject:* Re: [ovirt-users] Tuning and testing GlusterFS performance
>
>
>
> Bill,
>
>
>
> Appreciate the feedback and would be interested to hear some of your
> results.  I'm a bit worried about what i'm seeing so far on a very stock 3
> node HCI setup.  8mb/sec on that dd test mentioned in the original post
> from within a VM (which may be explained by bad testing methods or some
> other configuration considerations).. but what is more worrisome to me is
> that I tried another dd test to time creating a 32GB file, it was taking a
> long time so I exited the process and the VM basically locked up on me, I
> couldn't access it or the console and eventually had to do a hard shutdown
> of the VM to recover.
>
>
>
> I don't plan to host many VMs, probably around 15.  They aren't super
> demanding servers but some do read/write big directories such as working
> with github repos and large node_module folders, rsyncs of fairly large
> dirs etc.  I'm definitely going to have to do a lot more testing before I
> can be assured enough to put any important VMs on this cluster.
>
>
>
> - James
>
>
>
> On Thu, Aug 2, 2018 at 1:54 PM, William Dossett 
> wrote:
>
> I usually look at IOPs using IOMeter… you usually want several workers
> running reads and writes in different threads at the same time.   You can
> run Dynamo on a Linux instance and then connect it to a window GUI running
> IOMeter to give you stats.  I was getting around 250 IOPs on JBOD sata
> 7200rpm drives which isn’t bad for cheap and cheerful sata drives.
>
>
>
> As I said, I’ve worked with HCI in VMware now for a couple of years,
> intensely this last year when we had some defective Dell hardware and
> trying to diagnose the problem.  Since then the hardware has been
> completely replaced with all flash solution.   So when I got the all flash
> solution I used IOmeter on it and was only getting around 3000 IOPs on
> enterprise flash disks… not exactly stellar, but OK for one VM.  The trick
> there was the scale out.  There is a VMware Fling call HCI Bench.  Its very
> cool in that you spin up one VM and then it spawns 40 more VMs across the
> cluster.  I  could then use VSAN observer and it showed my hosts were
> actually doing 30K IOPs on average which is absolutely stellar
> performance.
>
>
>
> Anyway, moral of the story there was that your one VM may seem like its
> quick, but not what you would expect from flash…   but as you add more VMs
> in the cluster and they are all doing workloads, it scales out beautifully
> and the read/write speed does not slow down as you add more loads.  I’m
> hoping that’s what we are going to see with Gluster.
>
>
>
> Also, you are using mb nomenclature below, is that Mb, or MB?  I am sort
> of assuming MB megabytes per second…  it does not seem very fast.  I’m
> probably not going to get to work more on my cluster today as I’ve got
> other projects that I need to get done on time, but I want to try and get
> some templates up and running and do some more testing either tomorrow or
> this weekend and see what I get in just basic writing MB/s and let you know.
>
>
>
> Regards
>
> Bill
>
>
>
>
>
> *From:* Jayme 
> *Sent:* Thursday, August 2, 2018 8:12 AM
> *To:* users 
> *Subject:* [ovirt-users] Tuning and testing GlusterFS performance
>
>
>
> So I've finally completed my first HCI build using the below configuration:
>
>
>
> 3x
>
> Dell PowerEdge R720
>
> 2x 2.9 GHz 8 Core E5-2690
>
> 256GB RAM
>
> 2x250gb SSD Raid 1 (boot/os)
>
> 2x2TB SSD jbod passthrough (used for gluster bricks)
>
> 1Gbe Nic for management 10Gbe nic for Gluster
>
>
>
> Using Replica 3 with no arbiter.
>
>
>
> Installed the latest 

[ovirt-users] Re: Possible to use Console via Mac web browser?

[Jayme]

I got it working in chrome by setting spice+vnc then selecting the novnc
option in the console options

On Thu, Aug 2, 2018, 6:50 PM Christophe TREFOIS, 
wrote:

> I guess there are console options, where you can set HTML5 now.
>
>
>
> Check on the small “arrow” next to the console icon.
>
>
>
> *From:* Jayme 
> *Sent:* jeudi 2 août 2018 01:02
> *To:* users 
> *Subject:* [ovirt-users] Possible to use Console via Mac web browser?
>
>
>
> I recall in the past (on a bit older of an oVirt build) I was able to
> launch VM consoles from my web browser.  I believe it may have been using
> spice html5 at the time, is this still possible?  Currently launching
> console downloads the typical .vv file.
>
>
>
> What is currently the best/easiest method to access VM consoles using
> MacOS?
>
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[ovirt-users] Re: Possible to use Console via Mac web browser?

[Christophe TREFOIS]

I guess there are console options, where you can set HTML5 now.

Check on the small “arrow” next to the console icon.

From: Jayme 
Sent: jeudi 2 août 2018 01:02
To: users 
Subject: [ovirt-users] Possible to use Console via Mac web browser?

I recall in the past (on a bit older of an oVirt build) I was able to launch VM 
consoles from my web browser.  I believe it may have been using spice html5 at 
the time, is this still possible?  Currently launching console downloads the 
typical .vv file.

What is currently the best/easiest method to access VM consoles using MacOS?
___
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[ovirt-users] Re: Unable to revive host after a reboot

[Edward Haas]

Seems like the persistent configuration was erased and VDSM restored an
empty config, therefore, removed ovirtmgmt.

At 2018-07-29 22:07:29,037, the persistent config existed at:
/var/lib/vdsm/persistence/...
But when VDSM (or the whole host?) was restarted at 2018-07-29 22:17:21,558
, it was no longer there and therefore ovirtmgmt was erased.
I could not see any hint on why the persistent config was erased.

I think that the easiest way to restore the host is to just define dhcp
manually on the eno1 interface and re-add the host from Engine.


On Thu, Aug 2, 2018 at 2:49 PM,  wrote:

> Here is the output of the tree command:
> [root@pc305052 ~]# tree /var/lib/vdsm
> /var/lib/vdsm
> ├── netconfback
> ├── persistence
> │   ├── netconf -> /var/lib/vdsm/persistence/netconf.fxEXfkKx
> │   └── netconf.fxEXfkKx
> │   ├── bonds
> │   ├── devices
> │   └── nets
> ├── staging
> │   ├── netconf -> /var/lib/vdsm/staging/netconf.JtRmRH7X
> │   └── netconf.JtRmRH7X
> │   ├── bonds
> │   ├── devices
> │   └── nets
> ├── transient
> └── upgrade
>
> 15 directories, 0 files
>
> I tried removing the files below persistence (with the services stopped),
> but that did not help.
>
> Here is the supervdsm.log:
> https://drive.google.com/open?id=1uTCEjXchZ1BJJQuGWln83BR-uxZYcVUJ
>
> The repository works when I set up the proxy, but it is not always set up.
> Should I try enabling it doing a reinstall?
> ___
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[ovirt-users] Re: Tuning and testing GlusterFS performance

[William Dossett]

Yeah, I am just ramping up here, but this project is mostly on my own time and 
money, hence no SSDs for Gluster… I’ve already blown close to $500 of my own 
money on 10Gb ethernet cards and SFPs on ebay as my company frowns on us 
getting good deals for equipment on ebay and would rather go to their preferred 
supplier – where $500 wouldn’t even buy half a 10Gb CNA ☹  but I believe in 
this project and it feels like it is getting ready for showtime – if I can demo 
this in a few weeks and get some interest I’ll be asking them to reimburse me, 
that’s for sure!

 

Hopefully going to get some of the other work off my plate and work on this 
later this afternoon, will let you know any findings.

 

Regards

Bill

 

 

From: Jayme  
Sent: Thursday, August 2, 2018 11:07 AM
To: William Dossett 
Cc: users 
Subject: Re: [ovirt-users] Tuning and testing GlusterFS performance

 

Bill,

 

Appreciate the feedback and would be interested to hear some of your results.  
I'm a bit worried about what i'm seeing so far on a very stock 3 node HCI 
setup.  8mb/sec on that dd test mentioned in the original post from within a VM 
(which may be explained by bad testing methods or some other configuration 
considerations).. but what is more worrisome to me is that I tried another dd 
test to time creating a 32GB file, it was taking a long time so I exited the 
process and the VM basically locked up on me, I couldn't access it or the 
console and eventually had to do a hard shutdown of the VM to recover.  

 

I don't plan to host many VMs, probably around 15.  They aren't super demanding 
servers but some do read/write big directories such as working with github 
repos and large node_module folders, rsyncs of fairly large dirs etc.  I'm 
definitely going to have to do a lot more testing before I can be assured 
enough to put any important VMs on this cluster.

 

- James

 

On Thu, Aug 2, 2018 at 1:54 PM, William Dossett mailto:william.doss...@gmail.com> > wrote:

I usually look at IOPs using IOMeter… you usually want several workers running 
reads and writes in different threads at the same time.   You can run Dynamo on 
a Linux instance and then connect it to a window GUI running IOMeter to give 
you stats.  I was getting around 250 IOPs on JBOD sata 7200rpm drives which 
isn’t bad for cheap and cheerful sata drives.

 

As I said, I’ve worked with HCI in VMware now for a couple of years, intensely 
this last year when we had some defective Dell hardware and trying to diagnose 
the problem.  Since then the hardware has been completely replaced with all 
flash solution.   So when I got the all flash solution I used IOmeter on it and 
was only getting around 3000 IOPs on enterprise flash disks… not exactly 
stellar, but OK for one VM.  The trick there was the scale out.  There is a 
VMware Fling call HCI Bench.  Its very cool in that you spin up one VM and then 
it spawns 40 more VMs across the cluster.  I  could then use VSAN observer and 
it showed my hosts were actually doing 30K IOPs on average which is absolutely 
stellar performance.  

 

Anyway, moral of the story there was that your one VM may seem like its quick, 
but not what you would expect from flash…   but as you add more VMs in the 
cluster and they are all doing workloads, it scales out beautifully and the 
read/write speed does not slow down as you add more loads.  I’m hoping that’s 
what we are going to see with Gluster.

 

Also, you are using mb nomenclature below, is that Mb, or MB?  I am sort of 
assuming MB megabytes per second…  it does not seem very fast.  I’m probably 
not going to get to work more on my cluster today as I’ve got other projects 
that I need to get done on time, but I want to try and get some templates up 
and running and do some more testing either tomorrow or this weekend and see 
what I get in just basic writing MB/s and let you know.

 

Regards

Bill

 

 

From: Jayme mailto:jay...@gmail.com> > 
Sent: Thursday, August 2, 2018 8:12 AM
To: users mailto:users@ovirt.org> >
Subject: [ovirt-users] Tuning and testing GlusterFS performance

 

So I've finally completed my first HCI build using the below configuration:

 

3x

Dell PowerEdge R720

2x 2.9 GHz 8 Core E5-2690

256GB RAM

2x250gb SSD Raid 1 (boot/os)

2x2TB SSD jbod passthrough (used for gluster bricks)

1Gbe Nic for management 10Gbe nic for Gluster

 

Using Replica 3 with no arbiter. 

 

Installed the latest version of oVirt available at the time 4.2.5.  Created 
recommended volumes (with an additional data volume on second SSD). Not using 
VDO

 

First thing I did was setup glusterFS network on 10Gbe and set it to be used 
for glusterFS and migration traffic. 

 

I've setup a single test VM using Centos7 minimal on the default "x-large 
instance" profile. 

 

Within this VM if I do very basic write test using something like:

 

dd bs=1M count=256 if=/dev/zero of=test conv=fdatasync

 

I'm seeing quite slow speeds, only 8mb/sec.  

 

If I do the same from one 

[ovirt-users] Re: Tuning and testing GlusterFS performance

[Jayme]

Bill,

Appreciate the feedback and would be interested to hear some of your
results.  I'm a bit worried about what i'm seeing so far on a very stock 3
node HCI setup.  8mb/sec on that dd test mentioned in the original post
from within a VM (which may be explained by bad testing methods or some
other configuration considerations).. but what is more worrisome to me is
that I tried another dd test to time creating a 32GB file, it was taking a
long time so I exited the process and the VM basically locked up on me, I
couldn't access it or the console and eventually had to do a hard shutdown
of the VM to recover.

I don't plan to host many VMs, probably around 15.  They aren't super
demanding servers but some do read/write big directories such as working
with github repos and large node_module folders, rsyncs of fairly large
dirs etc.  I'm definitely going to have to do a lot more testing before I
can be assured enough to put any important VMs on this cluster.

- James

On Thu, Aug 2, 2018 at 1:54 PM, William Dossett 
wrote:

> I usually look at IOPs using IOMeter… you usually want several workers
> running reads and writes in different threads at the same time.   You can
> run Dynamo on a Linux instance and then connect it to a window GUI running
> IOMeter to give you stats.  I was getting around 250 IOPs on JBOD sata
> 7200rpm drives which isn’t bad for cheap and cheerful sata drives.
>
>
>
> As I said, I’ve worked with HCI in VMware now for a couple of years,
> intensely this last year when we had some defective Dell hardware and
> trying to diagnose the problem.  Since then the hardware has been
> completely replaced with all flash solution.   So when I got the all flash
> solution I used IOmeter on it and was only getting around 3000 IOPs on
> enterprise flash disks… not exactly stellar, but OK for one VM.  The trick
> there was the scale out.  There is a VMware Fling call HCI Bench.  Its very
> cool in that you spin up one VM and then it spawns 40 more VMs across the
> cluster.  I  could then use VSAN observer and it showed my hosts were
> actually doing 30K IOPs on average which is absolutely stellar
> performance.
>
>
>
> Anyway, moral of the story there was that your one VM may seem like its
> quick, but not what you would expect from flash…   but as you add more VMs
> in the cluster and they are all doing workloads, it scales out beautifully
> and the read/write speed does not slow down as you add more loads.  I’m
> hoping that’s what we are going to see with Gluster.
>
>
>
> Also, you are using mb nomenclature below, is that Mb, or MB?  I am sort
> of assuming MB megabytes per second…  it does not seem very fast.  I’m
> probably not going to get to work more on my cluster today as I’ve got
> other projects that I need to get done on time, but I want to try and get
> some templates up and running and do some more testing either tomorrow or
> this weekend and see what I get in just basic writing MB/s and let you know.
>
>
>
> Regards
>
> Bill
>
>
>
>
>
> *From:* Jayme 
> *Sent:* Thursday, August 2, 2018 8:12 AM
> *To:* users 
> *Subject:* [ovirt-users] Tuning and testing GlusterFS performance
>
>
>
> So I've finally completed my first HCI build using the below configuration:
>
>
>
> 3x
>
> Dell PowerEdge R720
>
> 2x 2.9 GHz 8 Core E5-2690
>
> 256GB RAM
>
> 2x250gb SSD Raid 1 (boot/os)
>
> 2x2TB SSD jbod passthrough (used for gluster bricks)
>
> 1Gbe Nic for management 10Gbe nic for Gluster
>
>
>
> Using Replica 3 with no arbiter.
>
>
>
> Installed the latest version of oVirt available at the time 4.2.5.
> Created recommended volumes (with an additional data volume on second SSD).
> Not using VDO
>
>
>
> First thing I did was setup glusterFS network on 10Gbe and set it to be
> used for glusterFS and migration traffic.
>
>
>
> I've setup a single test VM using Centos7 minimal on the default "x-large
> instance" profile.
>
>
>
> Within this VM if I do very basic write test using something like:
>
>
>
> dd bs=1M count=256 if=/dev/zero of=test conv=fdatasync
>
>
>
> I'm seeing quite slow speeds, only 8mb/sec.
>
>
>
> If I do the same from one of the hosts gluster mounts i.e.
>
>
>
> host1: /rhev/data-center/mnt/glusterSD/HOST:data
>
>
>
> I get about 30mb/sec (which still seems fairly low?)
>
>
>
> Am I testing incorrectly here?  Is there anything I should be tuning on
> the Gluster volumes to increase performance with SSDs?  Where can I find
> out where the bottle neck is here, or is this expected performance of
> Gluster?
>
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[ovirt-users] Re: Tuning and testing GlusterFS performance

[William Dossett]

I usually look at IOPs using IOMeter… you usually want several workers running 
reads and writes in different threads at the same time.   You can run Dynamo on 
a Linux instance and then connect it to a window GUI running IOMeter to give 
you stats.  I was getting around 250 IOPs on JBOD sata 7200rpm drives which 
isn’t bad for cheap and cheerful sata drives.

 

As I said, I’ve worked with HCI in VMware now for a couple of years, intensely 
this last year when we had some defective Dell hardware and trying to diagnose 
the problem.  Since then the hardware has been completely replaced with all 
flash solution.   So when I got the all flash solution I used IOmeter on it and 
was only getting around 3000 IOPs on enterprise flash disks… not exactly 
stellar, but OK for one VM.  The trick there was the scale out.  There is a 
VMware Fling call HCI Bench.  Its very cool in that you spin up one VM and then 
it spawns 40 more VMs across the cluster.  I  could then use VSAN observer and 
it showed my hosts were actually doing 30K IOPs on average which is absolutely 
stellar performance.  

 

Anyway, moral of the story there was that your one VM may seem like its quick, 
but not what you would expect from flash…   but as you add more VMs in the 
cluster and they are all doing workloads, it scales out beautifully and the 
read/write speed does not slow down as you add more loads.  I’m hoping that’s 
what we are going to see with Gluster.

 

Also, you are using mb nomenclature below, is that Mb, or MB?  I am sort of 
assuming MB megabytes per second…  it does not seem very fast.  I’m probably 
not going to get to work more on my cluster today as I’ve got other projects 
that I need to get done on time, but I want to try and get some templates up 
and running and do some more testing either tomorrow or this weekend and see 
what I get in just basic writing MB/s and let you know.

 

Regards

Bill

 

 

From: Jayme  
Sent: Thursday, August 2, 2018 8:12 AM
To: users 
Subject: [ovirt-users] Tuning and testing GlusterFS performance

 

So I've finally completed my first HCI build using the below configuration:

 

3x

Dell PowerEdge R720

2x 2.9 GHz 8 Core E5-2690

256GB RAM

2x250gb SSD Raid 1 (boot/os)

2x2TB SSD jbod passthrough (used for gluster bricks)

1Gbe Nic for management 10Gbe nic for Gluster

 

Using Replica 3 with no arbiter. 

 

Installed the latest version of oVirt available at the time 4.2.5.  Created 
recommended volumes (with an additional data volume on second SSD). Not using 
VDO

 

First thing I did was setup glusterFS network on 10Gbe and set it to be used 
for glusterFS and migration traffic. 

 

I've setup a single test VM using Centos7 minimal on the default "x-large 
instance" profile. 

 

Within this VM if I do very basic write test using something like:

 

dd bs=1M count=256 if=/dev/zero of=test conv=fdatasync

 

I'm seeing quite slow speeds, only 8mb/sec.  

 

If I do the same from one of the hosts gluster mounts i.e.

 

host1: /rhev/data-center/mnt/glusterSD/HOST:data 

 

I get about 30mb/sec (which still seems fairly low?)

 

Am I testing incorrectly here?  Is there anything I should be tuning on the 
Gluster volumes to increase performance with SSDs?  Where can I find out where 
the bottle neck is here, or is this expected performance of Gluster? 

___
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[ovirt-users] Tuning and testing GlusterFS performance

[Jayme]

So I've finally completed my first HCI build using the below configuration:

3x
Dell PowerEdge R720
2x 2.9 GHz 8 Core E5-2690
256GB RAM
2x250gb SSD Raid 1 (boot/os)
2x2TB SSD jbod passthrough (used for gluster bricks)
1Gbe Nic for management 10Gbe nic for Gluster

Using Replica 3 with no arbiter.

Installed the latest version of oVirt available at the time 4.2.5.  Created
recommended volumes (with an additional data volume on second SSD). Not
using VDO

First thing I did was setup glusterFS network on 10Gbe and set it to be
used for glusterFS and migration traffic.

I've setup a single test VM using Centos7 minimal on the default "x-large
instance" profile.

Within this VM if I do very basic write test using something like:

dd bs=1M count=256 if=/dev/zero of=test conv=fdatasync

I'm seeing quite slow speeds, only 8mb/sec.

If I do the same from one of the hosts gluster mounts i.e.

host1: /rhev/data-center/mnt/glusterSD/HOST:data

I get about 30mb/sec (which still seems fairly low?)

Am I testing incorrectly here?  Is there anything I should be tuning on the
Gluster volumes to increase performance with SSDs?  Where can I find out
where the bottle neck is here, or is this expected performance of Gluster?
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[ovirt-users] Re: Failed with error AcquireHostIdFailure and code 661

[albovl]

https://www.ovirt.org/documentation/how-to/storage/clear-the-storage-domain-pool-config-of-an-exported-nfs-domain/
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[ovirt-users] Re: better understand ovirt-engine functions

[Gianluca Cecchi]

On Thu, Aug 2, 2018 at 1:47 PM,  wrote:

> OK, I've spent time capturing traffic from the Hosts in Cluster B back to
> Data Center A.  I don't believe most of the traffic matters:  syslog, snmp,
> icmp, influxd (grafana), ssh, cfengine
>
> After filtering out all that, I'm left with TCP 54321 -- netstat tells me
> that the Python interpreter owns this port -- I'm guessing that this daemon
> is talking with ovirt-engine down in Data Center A.
>
> No sign of gluster-oriented traffic, e.g. TCP/UDP ports 24007/24008 nor
> 49152+  (that's what I expected to see ... some sort of storage dependency
> between the two)
>
> So I'm back to wondering under what happens when the conversation between
> ovirt-engine and KVM instances is disrupted?  Does it sound plausible that
> bad things happen?  Or would you say that this seems unlikely ... that
> management functions may be disrupted, but operational functions would be
> unaffected?
>
> --sk
>

https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.2/html/installation_guide/networking-requirements#host-firewall-requirements_RHV_install

port 54321 used by both manager and hosts to inter-communicate each one
with the others:

VDSM communications with the Manager and other virtualization hosts.

I think that in case engine in site A is not able to connect to vdsmd of a
host in site B (did this happen? you only talk about disruption inside site
A but it is not clear the kind of disruption...), I think it should mark it
as not responsive and eventually fence it so that it can release VM
resources (if VMs running on it) and storage (if SPM)  it is carrying on
and start on other hosts.
But if all cluster B hosts becomes unresponsive from the engine point of
view I don't know the default action what would be: perhaps freeze all
until something comes back?

Did you configure fencing in your clusters? If so, when you stop
communication inside site A, could it affect your fencing configuration
towards hosts in site B?

Gianluca
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[ovirt-users] Re: Possible to use Console via Mac web browser?

[Maton, Brett]

I've not had any luck on MacOS for a while now, even the .vv files with
RemoteViewer 0.5.7

I get a dialog saying unable to connect to the graphical server 
Same servers work just fine from a Windows client though.

On 2 August 2018 at 12:06, Greg Sheremeta  wrote:

> On Wed, Aug 1, 2018 at 7:03 PM Jayme  wrote:
>
>> I recall in the past (on a bit older of an oVirt build) I was able to
>> launch VM consoles from my web browser.  I believe it may have been using
>> spice html5 at the time, is this still possible?  Currently launching
>> console downloads the typical .vv file.
>>
>
> spice-html5 was removed in 4.2. For web-based in admin portal, you can use
> novnc.
>
> For VM Portal, it's a gap -- we currently only support .vv download only.
> https://github.com/oVirt/ovirt-web-ui/issues/490
> I have currently targeted this to VM Portal 1.4.2, to be released on
> August 10.
>
> Best wishes,
> Greg
>
>
>>
>> What is currently the best/easiest method to access VM consoles using
>> MacOS?
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>>
>
>
> --
>
> GREG SHEREMETA
>
> SENIOR SOFTWARE ENGINEER - TEAM LEAD - RHV UX
>
> Red Hat NA
>
> 
>
> gsher...@redhat.comIRC: gshereme
> 
>
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[ovirt-users] Re: Unable to revive host after a reboot

[julius . schwartzenberg]

Here is the output of the tree command:
[root@pc305052 ~]# tree /var/lib/vdsm
/var/lib/vdsm
├── netconfback
├── persistence
│   ├── netconf -> /var/lib/vdsm/persistence/netconf.fxEXfkKx
│   └── netconf.fxEXfkKx
│   ├── bonds
│   ├── devices
│   └── nets
├── staging
│   ├── netconf -> /var/lib/vdsm/staging/netconf.JtRmRH7X
│   └── netconf.JtRmRH7X
│   ├── bonds
│   ├── devices
│   └── nets
├── transient
└── upgrade

15 directories, 0 files

I tried removing the files below persistence (with the services stopped), but 
that did not help.

Here is the supervdsm.log:
https://drive.google.com/open?id=1uTCEjXchZ1BJJQuGWln83BR-uxZYcVUJ

The repository works when I set up the proxy, but it is not always set up. 
Should I try enabling it doing a reinstall?
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[ovirt-users] Re: better understand ovirt-engine functions

[stuartk]

OK, I've spent time capturing traffic from the Hosts in Cluster B back to Data 
Center A.  I don't believe most of the traffic matters:  syslog, snmp, icmp, 
influxd (grafana), ssh, cfengine

After filtering out all that, I'm left with TCP 54321 -- netstat tells me that 
the Python interpreter owns this port -- I'm guessing that this daemon is 
talking with ovirt-engine down in Data Center A.

No sign of gluster-oriented traffic, e.g. TCP/UDP ports 24007/24008 nor 49152+  
(that's what I expected to see ... some sort of storage dependency between the 
two)

So I'm back to wondering under what happens when the conversation between 
ovirt-engine and KVM instances is disrupted?  Does it sound plausible that bad 
things happen?  Or would you say that this seems unlikely ... that management 
functions may be disrupted, but operational functions would be unaffected?

--sk
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[ovirt-users] Re: Possible to use Console via Mac web browser?

[Greg Sheremeta]

On Wed, Aug 1, 2018 at 7:03 PM Jayme  wrote:

> I recall in the past (on a bit older of an oVirt build) I was able to
> launch VM consoles from my web browser.  I believe it may have been using
> spice html5 at the time, is this still possible?  Currently launching
> console downloads the typical .vv file.
>

spice-html5 was removed in 4.2. For web-based in admin portal, you can use
novnc.

For VM Portal, it's a gap -- we currently only support .vv download only.
https://github.com/oVirt/ovirt-web-ui/issues/490
I have currently targeted this to VM Portal 1.4.2, to be released on August
10.

Best wishes,
Greg


>
> What is currently the best/easiest method to access VM consoles using
> MacOS?
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-- 

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SENIOR SOFTWARE ENGINEER - TEAM LEAD - RHV UX

Red Hat NA



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[ovirt-users] Re: UI plugin of billing

[Greg Sheremeta]

Hi :)

I can certainly help with the UI plugin part. The new way to do this is
using react + REST API. Take a look at
https://github.com/oVirt/ovirt-engine-ui-extensions
you could model your plugin on the Migrate VM plugin there.
https://github.com/oVirt/ovirt-engine-ui-extensions/blob/master/src/integrations/buttons.js

I suspect you'll need to do backend work for this one though :) Someone
else can chime in here.

Best wishes,
Greg

On Thu, Aug 2, 2018 at 4:12 AM 董青龙  wrote:

> Hi all,
> I want to develop an UI plugin for ovirt which aimes at
> translating metrics to prices like CloudKitty of openstack. Has anyone done
> it? Can anyone give me some advice? Thanks!
>
>
>
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Red Hat NA



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[ovirt-users] Re: MoM - Not working ? How to use it ?

[jeanbaptiste]

Hi,

Does I need to activate for Clusters / Hosts, something more than: 

On my Cluster > Optimization > Memory Balloon > Enable Memory Balloon 
Optimization
I've already reboot / take in maintenance and Force MOM policy several time 
since I try to make work Balloon 

How to check if MoM work on my host ? Which logs does I need to have if MoM 
work as expected ?

Thanks
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[ovirt-users] Re: Schema upgrade error while updating 4.2.4 to 4.2.5

[Greg Sheremeta]

We actually hit this internally too, so looks like a bug.

@Eli Mesika 

On Thu, Aug 2, 2018 at 4:17 AM Jan Siml  wrote:

> Hello,
>
> I stumbled across the following bug when upgrading the ovirt engine from
> 4.2.4 to 4.2.5 (snippet from upgrade log):
>
> Running upgrade sql script
>
> '/usr/share/ovirt-engine/dbscripts/upgrade/04_02_1210_add_foreign_key_to_image_transfers.sql'...
>
> 2018-08-02 09:14:33,116+0200 DEBUG
> otopi.plugins.ovirt_engine_setup.ovirt_engine.db.schema
> plugin.execute:926 execute-output:
> ['/usr/share/ovirt-engine/dbscripts/schema.sh', '-s', 'localhost', '-p',
> '5432', '-u'
> , 'engine', '-d', 'engine', '-l',
> '/var/log/ovirt-engine/setup/ovirt-engine-setup-20180802091038-xclfnu.log',
>
> '-c', 'apply'] stderr:
> psql:/usr/share/ovirt-engine/dbscripts/upgrade/04_02_1210_add_foreign_key_to_image_transfers.sql:1:
>
> ERROR:  insert or update on table "image_transfers" violates foreign key
> constraint "fk_image_transfers_command
> _enitites"
> DETAIL:  Key (command_id)=(312f711f-a5c3-477d-8533-82ef88a54b77) is not
> present in table "command_entities".
> FATAL: Cannot execute sql command:
>
> --file=/usr/share/ovirt-engine/dbscripts/upgrade/04_02_1210_add_foreign_key_to_image_transfers.sql
>
> 2018-08-02 09:14:33,117+0200 ERROR
> otopi.plugins.ovirt_engine_setup.ovirt_engine.db.schema schema._misc:434
> schema.sh: FATAL: Cannot execute sql command:
> --file=/usr/share/ovirt-engine/dbscripts/upgrade/04_02_12
> 10_add_foreign_key_to_image_transfers.sql
> 2018-08-02 09:14:33,119+0200 DEBUG otopi.context
> context._executeMethod:143 method exception
> Traceback (most recent call last):
>File "/usr/lib/python2.7/site-packages/otopi/context.py", line 133,
> in _executeMethod
>  method['method']()
>File
> "/usr/share/ovirt-engine/setup/bin/../plugins/ovirt-engine-setup/ovirt-engine/db/schema.py",
>
> line 436, in _misc
>  raise RuntimeError(_('Engine schema refresh failed'))
> RuntimeError: Engine schema refresh failed
> 2018-08-02 09:14:33,122+0200 ERROR otopi.context
> context._executeMethod:152 Failed to execute stage 'Misc configuration':
> Engine schema refresh failed
>
> Are there already instructions on how to deal with this error and does
> anyone know why this error occurs?
>
> Kind regards
>
> Jan
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[ovirt-users] Re: MoM - Not working ? How to use it ?

[Martin Sivak]

Hi,

did you put the host to maintenance and activated it again when you
enabled ballooning? Or search for a slightly hidden Sync MOM policy
link somewhere in the host area that would force it.

The log seems to indicate ballooning is either disabled or "not necessary".

Martin

On Tue, Jul 31, 2018 at 12:07 PM,   wrote:
> Hello,
>
> I'm trying to test Memory balloon useful functionality, but l'm unable to 
> make it work successfuly.
>
> Firstly, I enable the  MOM on my Cluster:
> Memory Balloon
> Enable Memory Balloon Optimization
>
> Secondly, I configure a VM virtual machine like this:
> On system tab:
> Memory Size : 28672 MB
> Maximum memory : 28672 MB
> On Ressource allocation tab:
> Memory Allocation:
> Physical Memory Guaranteed : 2048 MB
> Memory Balloon Device: Enabled
>
> Thirdly, I test
> 1- I boot the VM. After boot VM consume 200MB
> 2- I lauch perl program which consume 26GB.
> 3- During this, Host RAM usage is near 90%
> 4- I stop the perl program, and on guest side, RAM usage drop down to 200Mo
> 5- On host side, RAM usage keep to 24 - 26GB. I wait some time to show if the 
> qemu-vm process drop is host-ram-usage. Ram usage keep to 24GB.
> 6- I try to launch another VM like the first one (but with 8GB RAM and 2GB 
> Guaranteed) , on the host (to "force" Mom ?) but I'm unable to lauch it, Host 
> free mem is insufficient
>
> I change MoM log to debug to show something:
> 2018-07-31 11:49:31,887 - mom.RPCServer - INFO - ping()
> 2018-07-31 11:49:31,888 - mom.RPCServer - INFO - getStatistics()
> 2018-07-31 11:49:31,888 - mom.Monitor - DEBUG - Field 'mem_free' not known. 
> Ignoring.
>
>
> 2018-07-31 11:49:43,313 - mom.VdsmRpcBase - DEBUG - VM List: 
> [u'9632443f-d302-43f7-a279-778e64ee98f4']
> 2018-07-31 11:49:43,465 - mom.VdsmRpcBase - DEBUG - Memory stats: 
> {'swap_out': 0, 'swap_usage': 0, 'mem_free': 28221020, 'major_fault': 0, 
> 'swap_in': 0, 'swap_total': 0, 'mem_available': 28650472, 'minor_fault': 99, 
> 'mem_unused': 28221020}
> 2018-07-31 11:49:43,468 - mom.Monitor - DEBUG - Collector 
>  0x167de18> did not return any data
> 2018-07-31 11:49:43,931 - mom.RPCServer - INFO - ping()
> 2018-07-31 11:49:43,932 - mom.RPCServer - INFO - getStatistics()
> 2018-07-31 11:49:43,932 - mom.Monitor - DEBUG - Field 'mem_free' not known. 
> Ignoring.
> 2018-07-31 11:49:44,258 - mom.Monitor - DEBUG - Field 'mem_free' not known. 
> Ignoring.
> 2018-07-31 11:49:44,284 - mom.Evaluator - DEBUG - debug: ('No shared pages, 
> setting ksm_merge_across_nodes to', 1)
> 2018-07-31 11:49:44,286 - mom.Evaluator - DEBUG - debug: ('entry: 
> apply_NUMA_policy',)
> 2018-07-31 11:49:44,286 - mom.Evaluator - DEBUG - debug: (1, 
> '=ksm_merge_across_nodes ACTUAL from kernel')
> 2018-07-31 11:49:44,286 - mom.Evaluator - DEBUG - debug: (1, 
> '=ksmMergeAcrossNodes REQUIRED from oVirt-engine')
> 2018-07-31 11:49:44,289 - mom.Evaluator - DEBUG - debug: ('exit: 
> apply_NUMA_policy return_value = ', 0)
> 2018-07-31 11:49:44,310 - mom.Policy - DEBUG - Results: [0, 1, 1, 1, 0, 1, 1, 
> 0.2, 0.05, 0.2, 0.05, 0.0025, 'change_big_enough', 'shrink_guest', 
> 'grow_guest', 0.22506353015141964, 'balloon_logic', [0], 'guest_qos', [0], 
> 300, -50, 64, 1250, 10, 0.2, 'change_npages', 'apply_NUMA_policy', 6550590.4, 
> 30058208, None, 0, 0, None, -1, 10, 'check_and_set_quota', 
> 'reset_quota_and_period', [None], 0, 'set_io_limits', 'reset_io_limits', [0]]
>
>
> Does I miss something ? MoM behavior ?
>
> Thanks for all !
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[ovirt-users] Switch from nightly to stable

[Demeter Tibor]

Dear users, 
Around ovirt 4.2.2 after a bug I had switch to nightly from stable. Its was do 
applied only on the engine, not compute nodes. 
But now I would like to switch back to stable branch. 
How is safe that? I just need do remove the nightly repo and update? Need to 
apply a yum update * before or not? 

Please describe me what is the safe procedure. 
Thanks in advance, 
Regards, 
Tibor 



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[ovirt-users] Schema upgrade error while updating 4.2.4 to 4.2.5

[Jan Siml]

Hello,

I stumbled across the following bug when upgrading the ovirt engine from 
4.2.4 to 4.2.5 (snippet from upgrade log):


Running upgrade sql script 
'/usr/share/ovirt-engine/dbscripts/upgrade/04_02_1210_add_foreign_key_to_image_transfers.sql'...


2018-08-02 09:14:33,116+0200 DEBUG 
otopi.plugins.ovirt_engine_setup.ovirt_engine.db.schema 
plugin.execute:926 execute-output: 
['/usr/share/ovirt-engine/dbscripts/schema.sh', '-s', 'localhost', '-p', 
'5432', '-u'
, 'engine', '-d', 'engine', '-l', 
'/var/log/ovirt-engine/setup/ovirt-engine-setup-20180802091038-xclfnu.log', 
'-c', 'apply'] stderr:
psql:/usr/share/ovirt-engine/dbscripts/upgrade/04_02_1210_add_foreign_key_to_image_transfers.sql:1: 
ERROR:  insert or update on table "image_transfers" violates foreign key 
constraint "fk_image_transfers_command

_enitites"
DETAIL:  Key (command_id)=(312f711f-a5c3-477d-8533-82ef88a54b77) is not 
present in table "command_entities".
FATAL: Cannot execute sql command: 
--file=/usr/share/ovirt-engine/dbscripts/upgrade/04_02_1210_add_foreign_key_to_image_transfers.sql


2018-08-02 09:14:33,117+0200 ERROR 
otopi.plugins.ovirt_engine_setup.ovirt_engine.db.schema schema._misc:434 
schema.sh: FATAL: Cannot execute sql command: 
--file=/usr/share/ovirt-engine/dbscripts/upgrade/04_02_12

10_add_foreign_key_to_image_transfers.sql
2018-08-02 09:14:33,119+0200 DEBUG otopi.context 
context._executeMethod:143 method exception

Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/otopi/context.py", line 133, 
in _executeMethod

method['method']()
  File 
"/usr/share/ovirt-engine/setup/bin/../plugins/ovirt-engine-setup/ovirt-engine/db/schema.py", 
line 436, in _misc

raise RuntimeError(_('Engine schema refresh failed'))
RuntimeError: Engine schema refresh failed
2018-08-02 09:14:33,122+0200 ERROR otopi.context 
context._executeMethod:152 Failed to execute stage 'Misc configuration': 
Engine schema refresh failed


Are there already instructions on how to deal with this error and does 
anyone know why this error occurs?


Kind regards

Jan
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[ovirt-users] UI plugin of billing

[董青龙]

Hi all,
I want to develop an UI plugin for ovirt which aimes at translating 
metrics to prices like CloudKitty of openstack. Has anyone done it? Can anyone 
give me some advice? Thanks!___
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[ovirt-users] Re: Primary passthrough: QXL gets dosent disabled on boot Windows 10

[Alexis Enrrique Gavidia Albornoz]

Thk, i solve the problem with a hook, where you remove the signature of kvm=off.

Br Alexis Gavidia
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