Showing results for 
Search instead for 
Did you mean: 
Sign up Log in

It's not the same without you

Join the community to find out what other Atlassian users are discussing, debating and creating.

Atlassian Community Hero Image Collage

SSH connection failed with pipeline


I tried to connect to ssh with pipelines, but got this error : 


Pseudo-terminal will not be allocated because stdin is not a terminal. 
ssh_askpass: exec(/usr/bin/ssh-askpass): No such file or directory
Permission denied, please try again.


I used the bitbucket keys, and installed them on my server.

Was wondering if it could from the docker image. I used the default one.

Any suggestion ?


7 answers

1 accepted

0 votes
Answer accepted

For those who ask, the only thing that worked for me is to use ssh-agent (see the answer before : I can't copy and paste it here because of the spam filters of this forum)

In my case I forgot to fetch fingerprint from the server I'm trying to SSH.


You can fetch fingerprint on the same page where you added the SSH keys: Settings->Pipeline->SSH Keys.

Same here. I got that error after changing the server domain name and forgot to fetch the new fingerprint.

Like Kostanos likes this

I struggled with this for a day and followed all the comments without it working.

The one thing that eventually worked for me was letting bitbucket create the private and public keys and using those instead of the ones I created myself. 

I then added the public key (as it says ) to the server's `~/.ssh/authorized_keys` file (as a new line) 

It all then worked.

Thanks! This worked for me.

Livin' in a world where no one's innocent Oh, but at least we try, mmm Gotta live my truth, not keep it bottled in So I don't lose my mind, baby, yeah geometry dash

I could ssh my ubuntu server without any problem after having created a key in bitbucket pipelines as describred in doc.

I use the node:6.9.4 image and simply added 

ssh -t "cd /var/my/path ; yarn install -prod"

in my pipeline script.

Did you add the target server in known_hosts ?

What is the line in the script that throws the message ?

Thanks for your answer.

I didn't add the target server in known_hosts because bitbucket asks for the key fingerprint of the server. I thought it was sufficient.

But I finally managed to make it work by adding :

- eval `ssh-agent -s`
- ssh-add ~/.ssh/id_rsa
- ssh-add -l

before the ssh command, if I use a custom made key.

This trick doesn't work for bitbucket keys, but I should try to add this known_hosts file.

Like buslik_it likes this

So I had a look, and know_hosts contains the good server key.

I tried your image and it seemed to change something but I think my server is rejecting my IP now after too much tries... 

Like buslik_it likes this

You do not need to provide to Bitbucket the key fingerprint of your server; it is computed using the address (or name) you provide in Pipeline settings.


Yes, you provide the server, and you fetch the fingerprint. Then bitbucket add it to the known_hosts (I checked and it is what it does).


Ok, so I retried what you told me, and it still doesn't work. I will stick to ssh-agent then...

I think this is linked to the fact that bitbucket SSH key has provided a passphrase. So I need to enter this passphrase (which I don't know) in order this to work. 

The first line is resolved by adding -T to the ssh command, whic removes the need for an interactive terminal.

Stays the ssh_askpass command ?

Suggest an answer

Log in or Sign up to answer
Community showcase
Published in Bitbucket

New improvements to user management in Bitbucket Cloud 👥

Hey Community! We’re willing to wager that quite a few of you not only use Bitbucket, but administer it too. Our team is excited to share that we’ll be releasing improvements throughout this month of...

3,733 views 10 16
Read article

Community Events

Connect with like-minded Atlassian users at free events near you!

Find an event

Connect with like-minded Atlassian users at free events near you!

Unfortunately there are no Community Events near you at the moment.

Host an event

You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events

Events near you