I configured my pc and the virtualbox (the first one with Ubuntu Desktop 14.04 and the second one with Ubuntu Server 14.04) in order to communicate through ssh without explicitly ask for password and it works perfectly. Now I'm trying to run a simple hello world using openmpi, but when I run the command
mpirun --host localhost, name_other_host#ip ./hello
it doesn't work. What is wrong in what I'm doing? the executable exists in both hosts in home/name/Desktop/MW/hello
the error is this one
mpirun was unable to launch the specified application as it could not access
or execute an executable:
Executable: ~./hello
Node: domenico-K52Jc
while attempting to start process rank 0.
note: domenico-K52Jc is my localhost
Instead of using "localhost", you could use your "actual host" name in your /etc/hostname.
e.g. type in terminal:
cat /etc/hostname
if it returns something like "myubuntu"
then run the command:
mpirun --host myubuntu,name_other_host#ip ./hello
Also note that there should not be a space between your hostnames.
Hope it helps,
Shang
Related
I have a run configuration setup for a server tool. I want to run it in WSL2 environment from an Intellij run task. This works great but I need to manually set the Windows host IP whenever I restart the WSL2. To get the host IP I want to use this grep command:
grep -o -P "(?<=nameserver )[0-9\.]+" /etc/resolv.conf
I played with the configuration and tried something like this
This didn't work, because the grep command didn't get executed. It worked as expected when I used it in the console.
Trying the same thing with the enviroment variable didn't succeed as well.
I saw that it is possible to setup a "before run task". Maybe it is possible to do it with this option?
I am trying to setup a wifihotpot on my laptop in ubuntu 18 running as a Windows Subsystem for Linux (WSL). (Terminal only)
Following basic tutorials I wanted to run the following command:
~$ nmcli device wifi hotspot con-name my-hotspot ssid my-hotspot band bg password 123456
Error: Could not create NMClient object: Could not connect: No such file or directory.
Trying to start the networkmanager also fails:
~$ sudo service network-manager start
* Starting network connection manager NetworkManager [ OK ]
~$ sudo service network-manager status
* NetworkManager is not running
I tried the networkManager after installing network-manager:
sudo add-apt-repository ppa:nilarimogard/webupd8
Is there another way to create a wifi hotspot from Ubuntu running as a WSL? Or does it not have the right access to the windows host to pull it off?
at this time, I don't believe it is possible according to https://github.com/microsoft/WSL/issues/2438. They designed WSL to ignore calls to set interface properties. So nmcli and other commands that changes interface properties are not working, they marked it as a bug and will fix it in the future.
"WSL currently ignores the call (which was intentional at the time of the design) to set interface properties" - sunilmut
I hope to help in some way :)
Host OS: Windows 10
Vagrant: 2.2.4
VirtualBox: 6.0.6 r130049
When I run vagrant up, it prints this error message:
The following SSH command responded with a non-zero exit status.
Vagrant assumes that this means the command failed!
setup
Stdout from the command:
Stderr from the command:
bash: line 4: setup: command not found
The machine can be booted normally and SSH from my host to Virtual machine is OK but the synced folder is not working. I know this may not be a critical issue but still feel frustrated as I use my host machine to develop codes and "sync" these codes so that they can be loaded in my virtual machine.
Any advice is highly appreciated.
ps: When I boot a full UI virtual machine (different from my above mentioned) from my VirtualBox directly, it seems OK to have a "sync" directory and the VBGuestAdditions can be installed without errors.
It is a bug in VirtualBox 6.0.6 and it still exists in 6.0.8. The solution is to downgrade your VirtualBox itself and the Guest Extensions to 6.0.4.
We have one redhat linux enterprise 7.0 server.
I installed Apache 2.4.6 (last version) on this server.
Once i check the version of apache with apachectl -v command on the server terminal, i am getting below result and it is ok.
But when i tried same command from a different machine by using SSH Secure Shell, i am getting no result from this (apachectl -v) command as shown below.
What is the problem here? Is there any SSH setting regarding this command? We need to run apachectl -v command from SSH-Outside.
Thanks for your help..
When I run the example from the Docker doc in the "Viewing our web application container" section, i.e.,
docker run -d -P training/webapp python app.py
...I'm able to view the "Hello World" output in a browser. Success. This seems to indicate that the network I'm on may not be the problem.
Now I'm trying to view a container that runs a webdriver suite (test automation of a browser). Based on the output in docker logs -f, the webdriver suite runs to completion. But when I try to point a browser at the webdriver container (which is running the browser), I get a error saying:
ERR_CONNECTION_REFUSED
Here are the steps I'm following:
Start webdriver container with this command
docker run -d -p 8080:5000 "/bin/bash" "-c" "/dir1/dir2/filename.sh $PARAMETER1 $PARAMETER2"
point a browser to:
http://subdomain.mydomain.com:5000
Docker output:
user#server$ docker ps -l
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
2fa83fc0401a 65525ab9ad78 "/bin/bash -c '/opt/y" 55 minutes ago Up 55 minutes 2222/tcp, 0.0.0.0:8080->5000/tcp
user#server$ docker inspect --format '{{ .NetworkSettings.IPAddress }}' 2fa83fc0401a
111.22.33.4444
Other info:
Server config: Ubuntu 14.04
Docker version: 1.8.1, build d12ea79
I've reviewed the following questions but I'm not running on a VM and I'm not running NodeJS.
Unable to view rails app running in docker container from browser
Docker: Unable to specify port for a running container
Does anyone have suggestions on how I might troubleshoot this problem? Any assistance gratefully accepted.
:) jay
Update 1:
Based on the NodeJS question noted above, I'm thinking that I'm not setting a port correctly in the Dockerfile. Maybe this is as simple as setting the correct port for Selenium?
Update 2: as #hunter noted, I had the ports in the wrong order, but switching the ports does not resolve the problem. I think the bigger problem is that I was assigning the wrong port. So, I changed docker run -d -p 8080:5000 to docker run -d -P. When I did that, I got the following output:
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS
f375251b61d7 65525ab9ad78 "/bin/bash -c '/opt/y" About an hour ago Up About an hour 0.0.0.0:33073->2222/tcp
I then pointed the browser to that port: http://subdomain.mydomain.com:33073
But I still get the same error: ERR CONNECTION REFUSED
I think you're using the wrong port - the external port is 8080 not 5000.