turbovnc connection failed

[melissaa]

i got error while connecting turbovnc, channel 5: open failed: connect failed: Connection refused

[AlekhyaV_Intel]

Hi,

Thank you for posting in Intel Communities. Could you please let us know which DevCloud you're using? Is it Intel DevCloud for oneAPI/Edge/FPGA?

Are you following this document(https://devcloud.intel.com/oneapi/documentation/rendering-toolkit-for-linux/)? If yes, please let us know in which step you're getting the above error. If not, please try the given document and let us know if the issue still persists.

Regards,

Alekhya

[melissaa]

Intel® oneAPI Rendering Toolkit, yes I am following that document

[melissaa]

[AlekhyaV_Intel]

Hi,

We could reproduce your issue.

Please find our observations below:

We are assuming that your devcloud config file doesn't have the below part. If you do not have, please add this to your config file(path: <mobaxterm/cygwin installed path>/.ssh/config)

# SSH Tunnel config

################################################################################################

Host *.aidevcloud

User uXXXXX

IdentityFile ~/.ssh/devcloud-access-key-XXXXX.txt

ProxyCommand ssh -T devcloud nc %h %p

LocalForward 5022 localhost:22

LocalForward 5901 localhost:5901

################################################################################################

After adding, please follow the below steps:

1) In first terminal,

ssh devcloud

qsub -I -l nodes=1:renderkit:ppn=2

/opt/TurboVNC/bin/vncserver -otp

You will be connected to a compute node(let's assume you have connected to s001-n145 node) and A one-time OTP will be generated.

2) In second terminal,

ssh s001-n145.aidevcloud

3) After you are connected to the compute node is the second terminal too, Open turbo VNC viewer and enter

localhost:1

Click on connect. Enter the OTP that was generated from your first terminal in the password field and click enter.

Please let us know if the issue still persists. If this resolves your issue, make sure to accept this as a solution. This helps others with similar issue. Thank you.

Regards,

Alekhya

[sagar121]

i already have all those set in my config but i still get

channel 5: open failed: connect failed: Connection refused

config:

################################################################################################
# oneAPI DevCloud SSH config
################################################################################################
Host devcloud
User u2xxxx
IdentityFile ~/.ssh/devcloud-access-key-2xxxx.txt
ProxyCommand ssh -T -i ~/.ssh/devcloud-access-key-21xxx.txt guest@ssh.devcloud.intel.com

Host devcloud.proxy
User u21xxxx
Port 4022
IdentityFile ~/.ssh/devcloud-access-key-21xxxxtxt
ProxyCommand ssh -T devcloud-via-proxy

# If you must route outgoing SSH connection via a corporate proxy,
# replace PROXY_HOSTNAME and PORT below with the values provided by
# your network administrator.
Host devcloud-via-proxy
User guest
Hostname ssh.devcloud.intel.com
IdentityFile ~/.ssh/devcloud-access-key-2xxxx.txt
LocalForward 4022 c009:22
ProxyCommand nc -x PROXY_HOSTNAME:PORT %h %p
################################################################################################

################################################################################################
# DevCloud VSCode config
################################################################################################
Host devcloud-vscode
UserKnownHostsFile /dev/null
StrictHostKeyChecking no
Hostname localhost
User xxxxx
Port 5022
IdentityFile ~/.ssh/devcloud-access-key-2xxxx.txt
################################################################################################

################################################################################################
# SSH Tunnel config
################################################################################################
Host *.aidevcloud
User u21xxx
IdentityFile ~/.ssh/devcloud-access-key-2xxx.txt
ProxyCommand ssh -T devcloud nc %h %p
LocalForward 5022 localhost:22
LocalForward 5901 localhost:5901
################################################################################################

[AlekhyaV_Intel]

Hi,

We have not heard back from you. Could you please give us an update regarding this issue?

Regards,

Alekhya

[AlekhyaV_Intel]

Hi,

We assume that your issue is resolved. If you need any further assistance, please post a new question as this thread will no longer be monitored by Intel.

Regards,

Alekhya

[PanthoMashreky]

Hello Alekhya,

My

# SSH Tunnel config ################################################################################################ Host *.aidevcloud User uXXXXX IdentityFile ~/.ssh/devcloud-access-key-XXXXX.txt ProxyCommand ssh -T devcloud nc %h %p LocalForward 5022 localhost:22 LocalForward 5901 localhost:5901 ################################################################################################

is added but i got this same message of error its not working why??

Thanks.