[slurm-users] Slurm 17.11 X11 support questions

[Marcus Wagner]

Hi Matthew,


this is exactly the question, I asked a few days before ;) It seems, 
nearly none is using the native x11 forwarding, since there came no answers.
The only way, I got this functional, is to use salloc:

salloc srun --x11 xterm

See also my post  [slurm-users] slurm 17.11.2 and X11 forwarding on 
CentOS 7.4


Best
Marcus

On 01/19/2018 10:13 PM, Mjelde, Matthew J wrote:
>
> Thanks Marcus. I thought I had installed that dependency, but I guess 
> I installed it somewhere other than where I was compiling slurm at.  
> Once installed it compiled with x11 support.
>
> However, now I have another problem.  I am able to start an x11 job 
> using the command: `srun --pty --x11 bash` but no programs can connect 
> to the X server.  In other words, I get “unable to connect to X server 
> localhost:50.0”.  From what I see in the logs, it looks like it is all 
> working properly.  This is what I am seeing
>
> [2018-01-19T15:07:24.924] [1686.extern] debug2: remote accepted auth 
> methods: publickey,password
>
> [2018-01-19T15:07:25.227] [1686.extern] debug:  public key auth successful
>
> [2018-01-19T15:07:25.347] [1686.extern] debug2: x11_set_xauth: result 
> from xauth: Using authority file /home/mjmjelde/.Xauthority
>
> Writing authority file /home/mjmjelde/.Xauthority
>
> [2018-01-19T15:07:25.347] [1686.extern] X11 forwarding established on 
> DISPLAY=compute-01:50.0
>
> [2018-01-19T15:07:25.347] [1686.extern] debug:  x11 forwarding - 
> sending keepalive message
>
> [2018-01-19T15:07:25.347] [1686.extern] debug:  x11 forwarding local 
> display is 50
>
> [2018-01-19T15:07:25.760] debug2: got this type of message 6001
>
> [2018-01-19T15:07:25.760] debug2: Processing RPC: REQUEST_LAUNCH_TASKS
>
> [2018-01-19T15:07:25.760] launch task 1686.0 request from 
> 1569.1003 at 192.168.2.9 (port 41190)
>
> [2018-01-19T15:07:25.760] debug:  Checking credential with 340 bytes 
> of sig data
>
> [2018-01-19T15:07:25.762] debug2: _group_cache_lookup_internal: found 
> old entry for mjmjelde, looking up again
>
> [2018-01-19T15:07:25.765] [1686.extern] debug:  Handling 
> REQUEST_X11_DISPLAY
>
> [2018-01-19T15:07:25.765] [1686.extern] debug:  Leaving 
> _handle_get_x11_display
>
> [2018-01-19T15:07:25.765] debug:  Leaving stepd_get_x11_display
>
> [2018-01-19T15:07:25.765] debug2: _setup_x11_display: setting 
> DISPLAY=localhost:50:0 for job 1686 step 0
>
> Is there anything I am missing that I need to do to get x11 forwarding 
> working?
>
> Thanks,
>
> Matthew
>
> *From:*slurm-users [mailto:slurm-users-bounces at lists.schedmd.com] *On 
> Behalf Of *Marcus Wagner
> *Sent:* Monday, January 15, 2018 1:35 AM
> *To:* slurm-users at lists.schedmd.com
> *Subject:* Re: [slurm-users] Slurm 17.11 X11 support questions
>
> Hi Matthew,
>
> yes, I have.
> I just needed to install libssh2-devel, then the native support will 
> be built in:
>
> $> ldd slurmstepd
>         linux-vdso.so.1 =>  (0x00007fff4dbef000)
>         libslurmfull.so => /opt/slurm/lib64/slurm/libslurmfull.so 
> (0x00007f4fc4bd0000)
>         libhwloc.so.5 => /usr/lib64/libhwloc.so.5 (0x00007f4fc4995000)
>         libdl.so.2 => /usr/lib64/libdl.so.2 (0x00007f4fc4791000)
>         libpam.so.0 => /usr/lib64/libpam.so.0 (0x00007f4fc4582000)
>         libpam_misc.so.0 => /usr/lib64/libpam_misc.so.0 
> (0x00007f4fc437d000)
>         libutil.so.1 => /usr/lib64/libutil.so.1 (0x00007f4fc417a000)
>         libssh2.so.1 => /usr/lib64/libssh2.so.1 (0x00007f4fc3f50000)
>         libpthread.so.0 => /usr/lib64/libpthread.so.0 (0x00007f4fc3d33000)
>         libc.so.6 => /usr/lib64/libc.so.6 (0x00007f4fc3970000)
>         libm.so.6 => /usr/lib64/libm.so.6 (0x00007f4fc366e000)
>         libnuma.so.1 => /usr/lib64/libnuma.so.1 (0x00007f4fc3461000)
>         libltdl.so.7 => /usr/lib64/libltdl.so.7 (0x00007f4fc3257000)
>         /lib64/ld-linux-x86-64.so.2 (0x00005577dbb7f000)
>         libaudit.so.1 => /usr/lib64/libaudit.so.1 (0x00007f4fc302f000)
>         libssl.so.10 => /usr/lib64/libssl.so.10 (0x00007f4fc2dbc000)
>         libcrypto.so.10 => /usr/lib64/libcrypto.so.10 (0x00007f4fc295b000)
>         libz.so.1 => /usr/lib64/libz.so.1 (0x00007f4fc2745000)
>         libgcc_s.so.1 => /usr/lib64/libgcc_s.so.1 (0x00007f4fc252e000)
>         libcap-ng.so.0 => /usr/lib64/libcap-ng.so.0 (0x00007f4fc2328000)
>         libgssapi_krb5.so.2 => /usr/lib64/libgssapi_krb5.so.2 
> (0x00007f4fc20db000)
>         libkrb5.so.3 => /usr/lib64/libkrb5.so.3 (0x00007f4fc1df2000)
>         libcom_err.so.2 => /usr/lib64/libcom_err.so.2 (0x00007f4fc1bee000)
>         libk5crypto.so.3 => /usr/lib64/libk5crypto.so.3 
> (0x00007f4fc19bb000)
>         libkrb5support.so.0 => /usr/lib64/libkrb5support.so.0 
> (0x00007f4fc17ac000)
>         libkeyutils.so.1 => /usr/lib64/libkeyutils.so.1 
> (0x00007f4fc15a8000)
>         libresolv.so.2 => /usr/lib64/libresolv.so.2 (0x00007f4fc138e000)
>         libselinux.so.1 => /usr/lib64/libselinux.so.1 (0x00007f4fc1166000)
>         libpcre.so.1 => /usr/lib64/libpcre.so.1 (0x00007f4fc0f04000)
>
>
> Best
> Marcus
>
> On 01/13/2018 12:16 AM, Mjelde, Matthew J wrote:
>
>     Howdy,
>
>     I am trying to get my cluster’s native X11 support enabled, but am
>     having some difficulty.  I generated the RPMs for slurm, installed
>     them on my systems, and added the “PrologFlags=X11” in the
>     slurm.conf file as well.  However, when I start up slurmd with the
>     flag added, I get this error:
>
>     Jan 12 16:23:52 node-01 slurmd[15904]: error: X11 forwarding not
>     built in, cannot enable.
>
>     Jan 12 16:23:52 node-01 slurmd[15904]: fatal: PrologFlags invalid: X11
>
>     I believe I need to generate the RPMs with libssh2 support
>     enabled, however I do not see any documentation or options
>     available in the slurm.spec to do so.  Has anyone else been able
>     to generate the RPMs for slurm 17.11 with X11 support enabled?
>
>     Thanks,
>
>     Matthew
>
>
>
> -- 
> Marcus Wagner, Dipl.-Inf.
> IT Center
> Abteilung: Systeme und Betrieb
> RWTH Aachen University
> Seffenter Weg 23
> 52074 Aachen
> Tel: +49 241 80-24383
> Fax: +49 241 80-624383
> wagner at itc.rwth-aachen.de <mailto:wagner at itc.rwth-aachen.de>
> www.itc.rwth-aachen.de 
> <https://urldefense.proofpoint.com/v2/url?u=http-3A__www.itc.rwth-2Daachen.de&d=DwMD-g&c=ODFT-G5SujMiGrKuoJJjVg&r=UR4LBHzF5b_cDw_j2wfxOEm8sPXAdiAPXCqKlI8ciL8&m=r3tDky9Dn5zcA_9YNNqHRuCYBm3NU4IgotvVf5i4MBE&s=0PlzY_0YxT4VMYzS9Ex0yvZmKjP_Dq2P41bbziktsAg&e=>

-- 
Marcus Wagner, Dipl.-Inf.

IT Center
Abteilung: Systeme und Betrieb
RWTH Aachen University
Seffenter Weg 23
52074 Aachen
Tel: +49 241 80-24383
Fax: +49 241 80-624383
wagner at itc.rwth-aachen.de
www.itc.rwth-aachen.de

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