Ubuntu – Unable to start sshd

sshsshd

I'm new to Ubuntu and trying to start sshd but having a lot of problems. I've tried uninstalling and reinstalling ssh by running
sudo apt-get remove openssh-client openssh-server and sudo apt-get install openssh-client openssh-server. When I run sudo service ssh restart I get:

stop: Unknown instance:
ssh start/running, process 3638

sudo service sshd start gives me unrecognized service.

When I run ps -A | grep ssh I get nothing. Running ssh localhost gives me a connection refused.

Best Answer

Try purging before install:

sudo apt-get purge openssh-server
sudo apt-get install openssh-server

Related Solutions

Ubuntu – Ubuntu 12.04 – I can ssh into the server but sshd is an unrecognized service

The SSH server service in Ubuntu is named "ssh". Just run sudo service ssh restart to restart it.

Ubuntu – sshd won’t stop/start properly

Thanks to all who have posted trying to help me sort this out. I wanted to update all on the current status and explain what I did to put the system in its current state. You will notice in the original post that I tried sudo service ssh start, etc. and obtained various unhelpful errors. Eventually, I did

#touch /etc/ssh/sshd_not_to_be_run

and then

# killall sshd

a few times. At this point sshd stopped restarting (as you would expect). I then ran

sudo service ssh status
ssh stop/waiting  

sudo service ssh start  
ssh stop/pre-start, process 22510  

sudo service ssh status  
ssh stop/waiting  

sudo service ssh stop  
stop: Unknown instance:   

sudo service ssh status  
ssh stop/waiting  

sudo service ssh start    
ssh stop/pre-start, process 22579    

sudo service ssh status    
ssh stop/waiting

These results are expected given the presence of sshd_not_to_be_run file. After subsequently removing this file I was able to run:

sudo service ssh status
ssh stop/waiting

sudo service ssh start
ssh start/running, process 25063

sudo service ssh status
ssh start/running, process 25063

sudo service ssh stop
ssh stop/waiting

sudo service ssh start
ssh start/running, process 25141

sudo service ssh status
ssh start/running, process 25141

sudo service ssh stop
ssh stop/waiting

sudo service ssh start
ssh start/running, process 25247

It looks like things are in order for now. If anyone has any ideas about tests that I could to to help ubuntu sort this out (I have seen several other posts on the web that indicate the errors I was originally getting) I would be happy to do them and post results. Thanks again for all of your help.

Best Answer

Related Solutions

Ubuntu – Ubuntu 12.04 – I can ssh into the server but sshd is an unrecognized service

Ubuntu – sshd won’t stop/start properly

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