Ubuntu – SSH Daemon doesn’t start normally way

autostartserverssh

I use Ubuntu server 16.04.1 LTS (Kernel 4.4.0-38-generic x86_64).
And Install openssh-server(1:7.2p2-4ubuntu2.1).
At first, I use below.

sudo systemctl enable ssh.service

But sshd doesn't start in boot process.
So, I check this Questions -> (SSH Daemon does not autostart)
And try this article -> (http://blog.roberthallam.org/2010/06/sshd-not-running-at-startup)
However, sshd doesn't start. (sudo service ssh status is dead.)
Of course, I check symbolic link of /etc/rc*.d/S**ssh is created.

Then I added below to /etc/rc.local.

/etc/init.d/ssh start

Finally, sshd does start on boot, but I wonder why normally process doesn't work.
It might be because using usb wireless adapter, but I cannot be sure that.
Please tell me what do you think.

Best Answer

Well make sure openssh-server is installed. If installed already try reinstalling as follows :

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

For Ubuntu 16.04 LTS , there isn't any issue with 4.4 kernel and Linux kernel 4.6 is also compatible as well. If you still have the problem then I recommend you to upgrade your kernel or recompile your kernel.

Related Solutions

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

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Ubuntu – sshd won’t stop/start properly

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