Re: [HTCondor-users] could not make temporary directory: `/var/lib/condor/execute/dir_ Re: Fw: Xvfb | Docker Universe | Can't open display | (but works with docker run)

[JEAN-YVES SGRO <jsgro@xxxxxxxx>]

Hello Dima,

Thank you for your message.

I was not aware of Selinux, and I have read about it online.

It seems that a few years ago it caused problems with HTcondor.

The CentOS 7 within the container does not have this installed.

However, I finally found out that it is installed on the CentOS 7 running on the cluster that hosts HTcondor. It has a file called /etc/selinux/config which contains 2 uncommented lines that define the rules:

SELINUX=enforcing

SELINUXTYPE=targeted

Since this is part of the cluster installation, I can't disable it.

I am just an "end - user."

I discovered a Docker image that has a HTcondor installed. I will try to run that on my Mac and submit the job this way. But I might not have enough RAM to do all that... CHecking the documentation this seems like a dauting task and may not prove that Selinux is the culprit...

I had also thought of running a Docker image on the DOcker Universe to have "Double Docker" layers but it seems that in all cases the Kernel is shared in some way and that will probably not work.

I am trying to find an easier way to handle this, by perhaps creating an environment variable that provides a pre-defined temporary folder, pre-created, but I have not been successful in finding such customization on any of the xmgrace documentation on how to tell the program to use that one.... I just found perldoc.perl.org/File::Temp , but I am not sure that this would help in any way.

I am now trying with a directory created by the script.sh called Graph_Xmgrace_26 but 26 is not always the number used so it may not work. Indeed this time it is called... 27.

I discovered command to make many... I made 99 of them and made them all permissions:

mkdir -p Graph_Xmgrace_{1..99}
chmod a+rwx Graph_Xmgrace_*

But still could not even use #27 again even though it clearly existed.

could not make temporary directory: `/var/lib/condor/execute/dir_5652/Graph_Xmgrace_27'

Thank you for your suggestions and that of Selinux...

I'll keep digging!

Jean-Yves

---

From: HTCondor-users <htcondor-users-bounces@xxxxxxxxxxx> on behalf of dmitri.maziuk@xxxxxxxxx <dmitri.maziuk@xxxxxxxxx>
Sent: Friday, October 29, 2021 9:21 PM
To: htcondor-users@xxxxxxxxxxx <htcondor-users@xxxxxxxxxxx>
Subject: Re: [HTCondor-users] could not make temporary directory: `/var/lib/condor/execute/dir_ Re: Fw: Xvfb | Docker Universe | Can't open display | (but works with docker run)

 

On 2021-10-29 6:02 PM, JEAN-YVES SGRO via HTCondor-users wrote:
...
> Any idea?
Did you disable selinux?

Dima
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