access to repository via ssh fails but https work

[andrzejdoro]

Recently, I am not able to access repository via SSH-key (it was working one month ago). When I run push/pull, I receive (after around one minute):

Connection to bitbucket.org closed by remote host.
fatal: Could not read from remote repository.

When I change it to HTTPS (git remote set-url origin ...) then it works.

I was thinking that it might be a temporary issue, but I had this problem in previous week in one repository, and now, SSH fails in another repository, so I thing something is wrong.

Best regards,
Andrzej

[Jack · Accepted solution]

I remember that Bitbucket had SSH issues a month or so but was resolved after a while. However, this might be also a network issue on your end. Are you on a corporate network or home network? I'm asking because I experienced this problem before and what I did was to use VPN. Not ideal but it worked.

Also, have you tried restarting your machine?

[andrzejdoro]

I'm using home network, but with my company's VPN turned on it also doesn't work.
Restarting doesn't help.

When I run ssh -v git@bitbucket.org then I receive

OpenSSH_7.6p1 Ubuntu-4ubuntu0.3, OpenSSL 1.0.2n  7 Dec 2017 
(...)
debug1: Connecting to bitbucket.org [104.192.141.1] port 22. 
debug1: Connection established. 
(...)
debug1: Server host key: ssh-rsa SHA256:zzXQOXSRBEiUtuE8AikJYKwbHaxvSc0ojez9YXaGp1A 
debug1: Host 'bitbucket.org' is known and matches the RSA host key. 
debug1: Found key in /home/andrzej/.ssh/known_hosts:62 
(...)
debug1: Next authentication method: publickey 
debug1: Offering public key: RSA (...)
debug1: Server accepts key: pkalg ssh-rsa blen 535 
debug1: Authentication succeeded (publickey). 
Authenticated to bitbucket.org ([104.192.141.1]:22). 
debug1: channel 0: new [client-session] 
debug1: Entering interactive session. 
debug1: pledge: network 
debug1: Sending environment. 
(...)
debug1: Sending env LC_TIME = pl_PL.UTF-8 

(now it stops for a few seconds)
and then it fail with the following message

debug1: channel 0: free: client-session, nchannels 1 
Connection to bitbucket.org closed by remote host. 
Connection to bitbucket.org closed. 
Transferred: sent 4236, received 1848 bytes, in 20.1 seconds 
Bytes per second: sent 210.5, received 91.8 
debug1: Exit status -1

[andrzejdoro]

The problem is indeed in my network. I encounter the same problem when logging via ssh to some other remote machine. When I connect to another network (e.g. through mobile connection) it works.

[Jack]

Awesome. Well, not awesome that this problem exists but at least we have a successful workaround. 

[andrzejdoro]

Fortunately, in our cases the other network works fine. But what if you have no other choice? I'm going to investigate what might be wrong on the network side.