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Jenkins on CentOS and GitHub: How to Troubleshoot Common Issues and Errors



Failed to connect to repository : Command "git ls-remote -h git@github.com:adolfosrs/jenkins-test.git HEAD" returned status code 128: stdout: stderr: Host key verification failed. fatal: Could not read from remote repository. Please make sure you have the correct access rights and the repository exists.


I could successfully clone the repo at the same machine where jenkins is running and I also run the git ls-remote -h git@github.com:adolfosrs/jenkins-test.git HEAD command. So I have the right SSH at github.




How to install Jenkins on CentOS and connect it to GitHub



In my case, I edited the known_hosts file with root user. So it changed the file ownership to root and jenkins user started throwing "git@github.com:xxxxxx/xxxx.git HEAD" returned status code 128: stdout: stderr: Host key verification failed" error while cloning git image.Reverting the ownership resolved the issue.


I used RHEL7 and followed above commands. However the server is not listening on 8080. I tried to do a telnet from localhost but it says connection refused.Please if any help.Also no log file getting generated under /etc/var/log/jenkins


hi, the best way to know which port Jenkins is running is to read the jenkins.serviceIf you install Jenkins by yourself, by downloading the war, you need to write it yourself.If you use the yum install, then you need to find that file.A find grep should help you. you need to find this line :


Run automatic security scans with out-of-the-box integration with Snyk, or connect to other providers. Simply open an existing repository or create a new one and navigate to the Security tab to install the Snyk integration.


This blog will guide you through a detailed but yet easy steps for setup SSH between Jenkins and Github .Using this approach, you do not need to provide your credentials to configure the git repo in your Jenkins job. and you will achieve the password-less connection.However in order to launch linux instance on AWS where Jenkins is installed, please follow this blog.


This section shows you how to install theCloud Build GitHub app.This installation allows you to connect your GitHub repository with yourGoogle Cloud project so that Cloud Build can automatically applyyour Terraform manifests each time you create a new branch or push code toGitHub.


I can revisit permissions. I can see that the jenkins user has ownership and access to the ssh directory and the private key within that directory that is used for connecting to our repo. Are there specific permissions that directory and private key file need in order for the jenkins user to successfully access them from a job?


Thank you for your help. I am going to keep working on debugging. What has been really odd is that when I ssh onto the host and change user to the jenkins user I can clone and connect to the repo no problem. The second I try to run ssh -T git@repo-url in an execute shell I get ssh_exchange_identification: Connection closed by remote host. I can also verify by running whoami in the execute shell that the jenkins user is running those commands.


According to your installation, replace /home/bitnami/GitHub/webapptest/jenkins/scripts path with the local path in your Jenkins host pointing to Jenkins pipeline stage scripts location. Don't forget to mention absolute path here.


When you try to install packages from a Git repository and you use the ControlMastersetting for your SSH connection, Composer might hang endlessly and you see a shprocess in the defunct state in your process list.


Jenkins provides Debian/Ubuntu packages which install Jenkins and register Jenkins as start service.See the Install Jenkins on Ubuntu description.The Linux installation creates a /etc/init.d/jenkins script which starts Jenkins automatically at boot time. 2ff7e9595c


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