[SGE-discuss] Trouble installing SGE 8 on Centos 7

[Maximilian Friedersdorff]

Hi,

I am having some issues installing and running SGE on Centos 7.  I
appreciate that that is not officially supported, but it is what I
have to
work with.

I can build SGE from source just fine, either by rebuilding the
source rpm
or the distribution tarball. Installing these to /opt/sge also
works without
issue.  However running one of the install scripts (inst_sge,
start_gui_installer)
invariable fails when it attempts to launch qmaster:


  Starting Grid Engine qmaster
sge_qmaster start problem
sge_qmaster didn't start!
sge_qmaster start problem



On further investigation it seems that the qmaster process is
indeed running,
but communication with it is not possible.  Indeed, running qstat
yields:


error: commlib error: got select error (Broken pipe)
error: unable to contact qmaster using port 6444 on host
"radium"


According to `ps aux | grep qmaster`, the process
/opt/sge/bin/lx-amd64/sge_qmaster
is running however.


This issue occurs on 8.1.9 as well as on 8.1.8.  I tried
installing 8.1.9 on
centos 6 and it works as expected there.

I should mention that all of this is happening inside a qemu VM on
a Slackware host.
For completeness it is launched as follows:

qemu-system-x86_64 -drive file=sda_sge.cow,format=qcow2 -m 1G
-enable-kvm -smp 2

Any help/advice is greatly appreciated.

Many Thanks

Max



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Re: [SGE-discuss] Trouble installing SGE 8 on Centos 7

[Maximilian Friedersdorff]

Ondrej Valousek writes:


It's probably firewalld service running on qmaster.
Try to stop it or add exception
Otherwise GE has no problem running on Centos 7.


This.

Thank you for pointing it out!  It is working now.

Max



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[SGE-discuss] SSL issues with Son of Grid Engin 8.1.9 and Centos 7

[Maximilian Friedersdorff]

Hi,
I've tried to install SGE8.1.9 on Centos 7 (for real this time),
but
I am running into some issues that I did not occur on a test VM.

It is possible to launch the qmaster process, but not to
communicate with
it after the fact.  This is not an issue with the firewalld
service, it
is disabled. The error message indicates an SSL issue:

# qstat
error: commlib error: ssl connect error (SSL handshake error)
error: commlib error: ssl error ([ID=1409441b] in module "SSL
routines": "tlsv1 alert decrypt error")
error: unable to contact qmaster using port 6444 on host 


The service is listening at the expected port as confirmed with
netcat.

Trying to connect with openssl also works (as far as I can tell):

openssl s_client -connect :6444


The issues seems superficially similar with the one mentioned in
this
thread:
http://gridengine.org/pipermail/users/2015-July/008587.html,
however there was no resolution in that case (seemingly).

Many Thanks

Max



Un o’r 4 prifysgol uchaf yn y DU a’r orau yng Nghymru am fodlonrwydd myfyrwyr.
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Re: [SGE-discuss] SSL issues with Son of Grid Engin 8.1.9 and Centos 7

[Maximilian Friedersdorff]

Joshua Baker-LePain writes:


Are you using CSP?  To get that to work on CentOS-7 I had to
change the
default signature from md5 to sha256 in
$SGE_ROOT/util/sgeCA/sge_ca -- see
.
Although
the error message I was seeing was different...


Huzzah!  That did the trick, thanks for the pointer.

Many Thanks

Max




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Re: [SGE-discuss] Trouble installing SGE 8 on Centos 7

[Maximilian Friedersdorff]

What does "officially supported" mean?


That was perhaps a bad wording on my part.

The rpms in the releases directory are named as explicitly for
rhel5/6. I
just took that to mean that they hadn't been tried on centos 7.

Max




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Re: [SGE-discuss] SGE Installation on Centos 7

[Maximilian Friedersdorff]

On Thu, Apr 27, 2017 at 02:23:51PM +0530, ya...@orionsolutions.co.in wrote:

Hi SGE Admin's,

This is first time when I want SGE on our infra.



So I request you please help with installation guide of SGE on Centos 7.3 &
before installation what prerequisite I've to install please confirm me.



Thanks in advance.


I installed SGE on Centos 7 back in January this year.  If my
recolection is correct, the procedure was analogous to the instructions
for Centos 6.  There were some issues with the firewalld service (make
sure that it is not blocking SGE), as well as some issues with SSL.
Check out these threads for reference:

http://arc.liv.ac.uk/pipermail/sge-discuss/2017-January/001047.html
http://arc.liv.ac.uk/pipermail/sge-discuss/2017-January/001050.html

Max



Un o’r 4 prifysgol uchaf yn y DU a’r orau yng Nghymru am fodlonrwydd myfyrwyr.
(Arolwg Cenedlaethol y Myfyrwyr 2016)
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(National Student Survey 2016)
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