GitHub SSH access not working - linux

I have created a new user on github under our organization which will be used for auto deployment. I followed the article on https://help.github.com/articles/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent/#platform-linux.
Somehow, when I tried to clone the repository to the server, it worked once. The code was running properly, and I exit the server. Today, we released an update to the code, and I wanted to deploy the code manually to the server, so I ssh'd into the server and tried to pull the repository with git pull. It gave me Permission denied error. After some debugging I realized that the ssh-agent wasn't running. So I executed the following commands:
eval "$(ssh-agent -s)"
ssh-add .ssh/id_rsa_staging
Now, when I try ssh -T git#github.com, I see the welcome message which is:
Hi *****! You've successfully authenticated, but GitHub does not provide shell access.
But when I try to pull from the repository, I am continuously getting this error message:
Permission denied (publickey).
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
I checked the repository and the user has read access to it. I double checked if the keys match on github and server, yes they do. I tried generating new keys. I tried using ssh/config file. Nothing helped...
I appreciate any help & suggestions!
Update:
So I figured out that git clone command is working properly, but even when I try git pull right after git clone, it is giving the error.

If you are using sudo to git pull/push to the remote you need to ensure you used sudo to generate your SSH keys. Otherwise you will not be using the same keys that you originally generated.
github doc for reference

I had the exact same issue.
For me what worked was
Go to repo on github which you have cloned and wanna pull with
Under the code-download option copy SSH link
Enter following command in your terminal -->
git remote set-url origin paste_SSH_link

Related

How to fix Permission denied (publickey) onGitlab?

I have one project on Gitlab and I worked with it for the last few days!
But after a few days it all went off! I added my home PC ssh key in Gitlab project setting, but now I want use git pull for receive new changes in my home PC show me this error:
10:47 AM Update failed
Permission denied (publickey).
Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
10:47 AM Update canceled
Gitlab ssh key image:
How can I fix it?
GitHub isn't able to authenticate you. So, either you aren't setup with an SSH key, because you haven't set one up on your machine, or your key isn't associated with your GitHub account.
You can also use the HTTPS URL instead of the SSH/git URL to avoid having to deal with SSH keys. This is GitHub's recommended method.
Further, GitHub has a help page specifically for that error message, and explains in more detail everything you could check.
I know this problem. After add ssh key, add you ssh key to ssh agent too (from official docs https://help.github.com/articles/generating-ssh-keys/)
ssh-agent -s
ssh-add ~/.ssh/id_rsa
After it, all work fine, git can view proper key, before couldn't.

Not able to access git repo from jenkins

I have configured Jenkins on a Linux machine and my git repo is on an another Linux server. But when I try to give the URL of the repo to Jenkins I get the following error.
Failed to connect to repository : Command "git -c core.askpass=true ls-remote -h ssh://user#ip/~/export1 HEAD" returned status code 128:
stdout:
stderr: Permission denied, please try again.
Permission denied, please try again.
Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
What could be the cause for this?
I have seen that both the systems' rsa key is present in each other's .ssh/known_hosts folder.
I am able to pull or clone code from the repo to a folder in Jenkins system as well. So why is Jenkins not able to take it?
I have also tried the URL user#ip:/fullpath/to/repo
You need to make sure Jenkins is running as the right user (the one who has the keys in ~/.ssh/id_rsa(.pub)
That user might not be the same as the one used in the ssh url: user#ip means you are connecting to ip using an account which has your public key in ~user/.ssh/authorized_key.
So the Jenkins process must be run by an account which has the private and public key, whose public key is in ~user/.ssh/authorized_key on the git server side.
And that account should have done (only once) an ssh-keyscan -H ip >> ~account/.ssh/known_hosts before any ssh attempt, in order to record the git server ip as a known host.
Does it being a bare repo make any difference or change in the URL?
No. The .git at the end of the bare repo folder is optional when used as an url.
Further to #VonC's reply, you can also use the Credentials plugin to define a set of credentials on your Jenkins master that your Jenkins job uses to access your Git repo. This allows you to run Jenkins itself as a different user from there one that has access to the Git repo.
The main problem was the security of the systems. I hadnt checked the authentication mechanisms on my server. The password authentication to the git server was causing the problem because the jenkins machine tries to directly fire a ls-remote to the path. When you do the same thing on the terminal you will be prompted for a password and then itl accept. When I set the password authentication and UsePAM to no and enabled the RSA authentication, pubkey authentication and authorised key setting to yes in the sshd_config file, and restarted, it was able to access the repo and I dint get this error.

Only one user can push/pull to github

I have two CentOS servers that are set up the same. I created a git repo on server A and pushed it to github. I then cloned the repo on server B. At first, all seemed to be in order. I could commit on either server, push to the remote, and the pull on to the other server.
The problem is that my co-workers now cannot push or pull on server B (they can run git status or commit). Strangely, this applies to ALL repos on server B, not just the one I cloned. Here is the error they see:
ERROR: Repository not found.
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
I checked that they are in the collaborators lists (both as owners and on the team assigned to the repo).
I also tried changing to the root user and cloning the repo again--as root I received the same error as above. The global .gitconfig does not reference my user or key, and the local .git/config files are set to use SSH (git#github.com).
What would cause this error to happen all users but one? Where else should I be looking?
Add '-v' to your git command as you run it to get more verbose output, that should tell you what's wrong.
I did resolve this issue. I found the problem by running ssh -T -vvv git#github.com which showed different keys being used for my user vs. the other users on the server. The key being used generally was not tied to a user in our github account. The fix:
Generated a new SSH key
Added key to shared user on github account
Updated .ssh/config to use the new key when accessing github.com
I am not certain how the SSH key got messed up, because it worked before. But this fixed it.

gitlab error - the remote en hung up unexpectedly

I installed Gitlab on my Ubuntu successfully(gitlab.domain.com), on a client PC I installed Git (windows 7), then run Git Bash to generate SSH keys with command: ssh-keygen -t rsa -C "username#domain.com" to create private/public keys on C:\Users\AccountName.ssh
Then, add public key to profile on installed gitlab. Then can clone/push on Git Bash.
However, I can not reproduce this on other PCs, I tried some PCs, created new users, new ssh keys...
but always encounter that error "The remote end hung up unexpectedly", sometimes can clone but also get that error when pushing.
I can only clone/push on first PC. I'm so confused, don't know what I missed. I'm trying to get my team on Git
Thanks a lot for any advice
Make sure you are pointing it at the correct git server. Also - login on your Jenkins server (Under the jenkins user) and ssh to git#your-git-server and make sure to select 'yes' to add the server to your known hosts.
I had the same error and it was an access-level problem :
my user only had guest access to my project so it wasn't able to clone it. I changed the access level to developper and it solved my problem

Installing git repository on Oracle Enterprise Linux 5 -- SSH problems

I have been banging my head against a wall for a while now, and none of the people in my immediate vicinity know more than I do at this point.
My office has a lab box that they want to use for a central git repository -- mainly for testing various things. They also, of course, want me to get some experience setting up git so that we can possibly set up other git instances later.
I am running Windows 7 with an OEL 5.7 VM, and the box is running OEL 5.5. From my VM, I SSHed into the lab box and started tinkering. After installing git and gitosis, I have managed to get the instance working locally. I can see the git repository just fine, and if I try to clone it locally, it all works like a dream. But if I try to SSH in from my VM, it either A.) kicks me out with fatal: 'testproject.git' does not appear to be a git repository or B.) kicks me out with Permission denied (publickey,gssapi-with-mic), depending on how I invoke git.
Example: I configured the access to a test project I created (and tested locally) as follows:
[group team]
writable = testproject
members = oracle#RCSDB cwerness cwerness#localhost cwerness#localhost.localdomain
This is my first experience setting up a git repository, so I wanted to cover my bases regarding remote users. Thus, the redundancy in the members section.
When I try to clone the repository with my username only, I get
[cwerness#localhost Desktop]$ git clone cwerness#10.1.1.10:testproject.git
Cloning into testproject...
Enter passphrase for key '/home/cwerness/.ssh/id_rsa':
fatal: 'testproject.git' does not appear to be a git repository
fatal: The remote end hung up unexpectedly
If, however, I try to clone the repository with more information, I get
[cwerness#localhost Desktop]$ git clone "cwerness#localhost.localdomain"#10.1.1.10:testproject.git
Cloning into testproject...
Permission denied (publickey,gssapi-with-mic).
fatal: The remote end hung up unexpectedly
I have all the public keys stored in the /keydir folders. The repository was created and is owned by the user oracle, and I have tried all permutations of that user and its domain in the above clone commands as well, to no effect. Additionally, I tried setting up a ~/.ssh/config file like this
Host labbox
Hostname 10.1.1.10
User cwerness
IdentityFile /home/cwerness/.ssh/id_rsa
Again, I tried all the different ways to connect, from both users. Nothing is giving me any more information than I already had.
The box is set up to authenticate SSH connections via public keys, and that works fine. I can SSH into the box as cwerness with no problems.
This is getting to be a huge headache for me, and I'd like it if someone could tell me exactly HOW I am being stupid, if not a way to fix this problem.
git clone cwerness#10.1.1.10:testproject.git will look in the home directory for the user cwerness but you state you put the repository in /home/oracle/repositories. Try git clone cwerness#10.1.1.10:/home/oracle/repositories/testproject.git.

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