The venerable mainframe, once synonymous with monolithic applications and glacial development cycles, is experiencing a renaissance. This shift is fueled by the embrace of modern DevOps practices, propelling the mainframe into the vibrant realm of continuous integration, continuous delivery (CI\/CD), and collaborative development. But bridging the gap between the mainframe and popular distributed version control systems (DVCS) like GitHub and GitLab can feel like traversing a chasm. Fear not, intrepid developers! Secure SSH connections come to the rescue, paving the way for seamless integration and unleashing the power of DevOps workflows for your mainframe projects.<\/p>\r\n\r\n\r\n\r\n
This guide serves as your trusty map, navigating you through the intricacies of establishing secure SSH connections between your mainframe and GitHub\/GitLab. We’ll equip you with the knowledge and practical steps to confidently bridge the divide, transforming your mainframe from a solitary island into a thriving hub of collaborative development.<\/p>\r\n\r\n\r\n\r\n
Why SSH for Mainframe-GitHub\/GitLab Integration?<\/strong><\/p>\r\n\r\n\r\n\r\n While protocols like HTTP\/HTTPS offer basic connectivity, SSH (Secure Shell) reigns supreme for its robust security features. Imagine it as a fortified tunnel, encrypting all communication between your mainframe and GitHub\/GitLab, shielding sensitive data like commit histories and credentials from prying eyes. Beyond its impenetrable armor, SSH provides:<\/p>\r\n\r\n\r\n\r\n Generating SSH Keys: Your Digital Passports<\/strong><\/p>\r\n\r\n\r\n\r\n The foundation of secure connections lies in generating and managing SSH key pairs. Think of these as digital passports, granting access to your Git repository:<\/p>\r\n\r\n\r\n\r\n Commanding the Keys: Tools for Different Realms<\/strong><\/p>\r\n\r\n\r\n\r\n The battlefield for generating these keys depends on your chosen weaponry:<\/p>\r\n\r\n\r\n\r\n Example: Forging Your Credentials with BPlex (Mainframe)<\/strong><\/p>\r\n\r\n\r\n\r\n This ISPF template invokes the Example: Crafting Your Keys with OpenSSH (Local Machine)<\/strong><\/p>\r\n\r\n\r\n\r\n This command generates a key pair within the Uploading the Public Key: Granting Access to Your Git Fortress<\/strong><\/p>\r\n\r\n\r\n\r\n With your public key forged, it’s time to grant your mainframe access to your Git repository. Navigate to your user settings on GitHub\/GitLab and locate the “SSH and GPG keys” section. Paste the contents of your public key file (e.g., Connecting to GitHub\/GitLab: The Bridge Opens<\/strong><\/p>\r\n\r\n\r\n\r\n With your digital credentials in place, let’s build the bridge! Tools like zSecure Secure Shell, OpenSSH with additional configurations, and custom scripts offer powerful avenues for connection.<\/p>\r\n\r\n\r\n\r\n Example: Crossing the Divide with zSecure Secure Shell (Mainframe)<\/strong><\/p>\r\n\r\n\r\n\r\n This command establishes a secure connection to your Git repository using zSecure Secure Shell, prompting you for your private key passphrase before granting access.<\/p>\r\n\r\n\r\n\r\n Beyond Basic Connections: The DevOps Revolution Arrives<\/strong><\/p>\r\n\r\n\r\n\r\n The power of SSH transcends mere connections. You can leverage it for advanced DevOps tasks like:<\/p>\r\n\r\n\r\n\r\n Examples in Action: Putting Theory into Practice<\/strong><\/p>\r\n\r\n\r\n\r\n Let’s delve deeper into concrete examples:<\/p>\r\n\r\n\r\n\r\n 1. Triggering a z\/OS Build from GitHub Actions:<\/strong><\/p>\r\n\r\n\r\n\r\n YAML<\/p>\r\n\r\n\r\n\r\n Use code with caution.\u00a0Learn more<\/a>content_copy<\/p>\r\n\r\n\r\n\r\n This workflow generates an SSH key pair, uploads the public key to GitHub, and then connects to the z\/OS server via SSH to execute the 2. Running Data Migration Script from GitLab:<\/strong><\/p>\r\n\r\n\r\n\r\n YAML<\/p>\r\n\r\n\r\n\r\n Use code with caution.\u00a0Learn more<\/a>content_copy<\/p>\r\n\r\n\r\n\r\n This pipeline utilizes a pre-existing SSH key stored in Remember:<\/strong> These are just examples, and your specific workflow configuration will depend on your chosen tools, scripts, and build environments.<\/p>\r\n\r\n\r\n\r\n Taming the Complexity: A Secure Journey<\/strong><\/p>\r\n\r\n\r\n\r\n Embracing SSH connections for Git integration opens exciting possibilities, but complexity and potential risks deserve attention:<\/p>\r\n\r\n\r\n\r\n <\/p>\r\n\r\n\r\n\n <\/p>\n\r\n\r\n\r\n A Bright Future for Mainframe DevOps:<\/strong><\/p>\r\n\r\n\r\n\r\n By embracing secure SSH connections and integrating with platforms like GitHub and GitLab, we are rewriting the narrative of mainframe development. This fusion of modern practices with the stability and power of the mainframe unlocks an unprecedented level of agility, collaboration, and innovation. So, take the leap, secure your connections, and let your mainframe join the DevOps revolution!<\/p>\r\n\r\n\r\n\r\n Additional Resources:<\/strong><\/p>\r\n\r\n\r\n\r\n info<\/a><\/p>\r\n\r\n\r\n\r\n SSH Connection Setup for GitHub and GitLab Integration with Mainframes The venerable mainframe, once synonymous with monolithic applications and glacial […]<\/p>\n","protected":false},"author":515,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[176],"tags":[1135,1139,1138,1140,1142,1133,1134,1132,1136,1118,1127,1116,1137,1141],"class_list":["post-2117","post","type-post","status-publish","format-standard","hentry","category-devops","tag-automation-and-scripting","tag-ci-cd-pipelines","tag-collaborative-development","tag-devops-for-mainframes","tag-devops-workflow-optimization","tag-github-and-gitlab","tag-jenkins-orchestration","tag-mainframe-git-integration","tag-remote-script-execution","tag-secure-access","tag-security-best-practices","tag-ssh-connection","tag-ssh-key-management","tag-version-control"],"amp_enabled":true,"rttpg_featured_image_url":null,"rttpg_author":{"display_name":"zMainframes","author_link":"https:\/\/zmainframes.com\/zlog\/author\/zmainframes\/"},"rttpg_comment":0,"rttpg_category":"DevOps<\/a>","rttpg_excerpt":"SSH Connection Setup for GitHub and GitLab Integration with Mainframes The venerable mainframe, once synonymous with monolithic applications and glacial […]","_links":{"self":[{"href":"https:\/\/zmainframes.com\/zlog\/wp-json\/wp\/v2\/posts\/2117","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/zmainframes.com\/zlog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zmainframes.com\/zlog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zmainframes.com\/zlog\/wp-json\/wp\/v2\/users\/515"}],"replies":[{"embeddable":true,"href":"https:\/\/zmainframes.com\/zlog\/wp-json\/wp\/v2\/comments?post=2117"}],"version-history":[{"count":3,"href":"https:\/\/zmainframes.com\/zlog\/wp-json\/wp\/v2\/posts\/2117\/revisions"}],"predecessor-version":[{"id":2120,"href":"https:\/\/zmainframes.com\/zlog\/wp-json\/wp\/v2\/posts\/2117\/revisions\/2120"}],"wp:attachment":[{"href":"https:\/\/zmainframes.com\/zlog\/wp-json\/wp\/v2\/media?parent=2117"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zmainframes.com\/zlog\/wp-json\/wp\/v2\/categories?post=2117"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zmainframes.com\/zlog\/wp-json\/wp\/v2\/tags?post=2117"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\r\n
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bpkey<\/code>\u00a0command or ISPF templates to forge your digital passports.<\/li>\r\n\r\n\r\n\r\nssh-keygen<\/code>\u00a0command to craft your key pair within the familiar confines of your local terminal.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\nISPFTEMPLATE<\/span> ISPFKEY<\/span><\/span>\r\n EXEC<\/span> CMD<\/span>(<\/span>'BPKEY -P 4096'<\/span>)<\/span><\/span>\r\nENDISPFTEMPLATE<\/span><\/span>\r\n\r\nRUN<\/span> ISPFKEY<\/span><\/span>\r\n\r\nbpkey <\/span>-<\/span>pubout <<\/span>private_key_file<\/span>> <\/span>><\/span> public_key.txt<\/span><\/span>\r\n<\/code><\/pre>\r\n<\/div>\r\n\r\n\r\n\r\nbpkey<\/code> command to generate a key pair and extracts the public key for upload to GitHub\/GitLab.<\/p>\r\n\r\n\r\n\r\nssh-keygen -t rsa -b <\/span>4096<\/span> -<\/span>N<\/span> \"\" -f ~\/.ssh\/id_rsa<\/span><\/span>\r\n<\/code><\/pre>\r\n<\/div>\r\n\r\n\r\n\r\n~\/.ssh<\/code> directory of your local machine, securing your private key with a passphrase.<\/p>\r\n\r\n\r\n\r\npublic_key.txt<\/code>) and give it a descriptive title. Now, your mainframe has the green light to enter the Git fortress.<\/p>\r\n\r\n\r\n\r\nzsecure sh my-github-server.com -l mainframe_user<\/span><\/span>\r\n\r\n# Enter passphrase for your private key<\/span><\/span>\r\n\r\n# Run commands on GitHub\/GitLab remotely...<\/span><\/span>\r\n<\/code><\/pre>\r\n<\/div>\r\n\r\n\r\n\r\n\r\n
jobs<\/span>:<\/span><\/span>\r\n build<\/span>:<\/span><\/span>\r\n runs-on<\/span>: <\/span>ubuntu-latest<\/span><\/span>\r\n steps<\/span>:<\/span><\/span>\r\n - <\/span>uses<\/span>: <\/span>actions\/checkout@v3<\/span><\/span>\r\n - <\/span>name<\/span>: <\/span>Setup SSH connection<\/span><\/span>\r\n run<\/span>: <\/span>|<\/span><\/span>\r\n ssh-keygen -t rsa -b 4096 -N \"\" -f $HOME\/.ssh\/id_rsa<\/span><\/span>\r\n # Upload public key to GitHub<\/span><\/span>\r\n cat $HOME\/.ssh\/id_rsa.pub > key.pub<\/span><\/span>\r\n git config user.email \"your_email@example.com\"<\/span><\/span>\r\n git config user.name \"your_username\"<\/span><\/span>\r\n git add key.pub<\/span><\/span>\r\n git commit -m \"Add SSH public key\"<\/span><\/span>\r\n git push origin HEAD<\/span><\/span>\r\n - <\/span>name<\/span>: <\/span>Trigger z\/OS build<\/span><\/span>\r\n run<\/span>: <\/span>|<\/span><\/span>\r\n ssh mainframe_user@zOS_server -p 22 <<EOF<\/span><\/span>\r\n cd \/your\/project\/directory<\/span><\/span>\r\n .\/build_script.sh<\/span><\/span>\r\n EOF<\/span><\/span>\r\n<\/code><\/pre>\r\n<\/div>\r\n\r\n\r\n\r\nbuild_script.sh<\/code>, triggering the build process automatically.<\/p>\r\n\r\n\r\n\r\nstages<\/span>:<\/span><\/span>\r\n - <\/span>migrate<\/span><\/span>\r\n\r\nmigrate<\/span>:<\/span><\/span>\r\n script<\/span>:<\/span><\/span>\r\n - <\/span>ssh-agent sh -c '<\/span><\/span>\r\n ssh-add $HOME\/.ssh\/id_rsa;<\/span><\/span>\r\n cd \/data\/migration\/scripts;<\/span><\/span>\r\n .\/migrate_data.sh'<\/span><\/span>\r\n<\/code><\/pre>\r\n<\/div>\r\n\r\n\r\n\r\n$HOME\/.ssh\/id_rsa<\/code> to connect to the mainframe and execute the migrate_data.sh<\/code> script directly from GitLab, automating the data migration process.<\/p>\r\n\r\n\r\n\r\n\r\n
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