On Monday, April 04, 2016 02:34:33 PM you wrote:

It is a hosted engine setup with the host on a physical  server.  I wasn't
aware  that the engine used the entropy.  What do you  recommend  to fix
it?



Okay, if it is a 3.6 then you should be able edit the hosted engine VM in the 
UI itself. I haven't done any self hosted engine myself but there are some 
things you can't edit, not sure if the rng is one of them. Anyway if you can 
edit the hosted engine VM then open up the advanced options (bottom left 
button in popup), then click the random generator side tab, and check the 
random generator enabled button (if it is not checked already that is).

As far as I know that should be enought to have the random passed from the 
host to the VM and that should improve the entropy on the host engine. You 
might have to restarted the hosted engine VM for it to take effect.

If the above is not possible or doesn't work, I would go with yum install 
haveged, then chkconfig haveged on, service haveged start or if it is centos 7 
then its systemctl haveged enable and systemctl haveged start.



Sent from my Verizon Wireless 4G LTE smartphone-------- Original message
--------From: Alexander Wels <awels@redhat.com> Date: 04/04/2016  13:57 
(GMT-05:00) To: biholcomb@l1049h.com Subject: Re: [ovirt-users] heavy
webadmin
On Monday, April 04, 2016 12:55:55 PM you wrote:

On Mon, 2016-04-04 at 08:41 -0400, Alexander Wels wrote:

On Sunday, April 03, 2016 03:30:29 PM Brett I. Holcomb wrote:

On Sun, 2016-04-03 at 21:20 +0200, Nicolas Ecarnot wrote:

Le 03/04/2016 17:13, Greg Sheremeta a écrit :

We have patches in review that should fix this in 3.6.5. The
underlying
problem is a couple of JavaScript memory leaks.


God bless you!

Since 3.6.2 or 3.6.3, the web admin is getting close to unusable
after
some minutes (Firefox or Chrome, windows or Linux).
Alex Wels helped me try to debug this, but though much time spent
on
this, we failed.
In a way, I'm satisfied other people are also expressing the
same
frustration about this issue, if that can help to debug.

Thank you.


Thank you also.  I'm on 3.6.4 just released version and it can take
5+
minutes to go from the welcome page to the admin login page and
then
the interface is slow and frequently throws exceptions. 


Two things to check if going from the welcome page to the login page
is THAT
show.

1. Make 100% sure your DNS is setup correctly (or your /etc/hosts if
that is
what you use). If the engine cannot resolve itself, it will create
lots of
issues.
2. If you are running hosted engine, make sure you have enough
entropy, the
login page generates a couple of tokens using secure random, which
eats away
at your entropy budget heavily and since hosted engine is a VM it is
possible
that you don't have enough entropy. You can check your entropy level
with
this:

cat /proc/sys/kernel/random/entropy_avail

There are several options for solving the entropy problem if that is
the case.


DNS is 200% working  <G>.  All hosts are resolvable from any where on
the network and host can see engine and vice versa.
Entropy problems makes more sense.  I'd forgotten about this being a VM
and I've run into the issue generating certs on VMware guests.  I have
entropy_avail value of 159.  Is that good or bad and if bad what do I
need to do.


159 is horrible to be honest, that is most likely the cause of your
problems. Anything below around 300 is bad.

I am assuming this is not a hosted engine since you said you forgot this is
actually a virtual machine. So you are running some other kind of VM manager
to host the engine. The best thing to do is check if there is a way for
your manager to pass sources of random to the VM. In oVirt its a couple of
check boxes in the cluster setup and the VM setup. Obviously I don't know
what you are using so I can't comment on that.

Another thing you can do is install some kind of psuedo random generator
like haveged or rngd. I know for a fact you can simply 'yum install
haveged' and it will work (someone else had the same problem and solved it
that way).

It all depends on your level of needed security and VM manager, there are
also physical sources of random generation like usb sticks and stuff.