I propose migrating your Jenkins server, currently on outdated CentOS 7, to the latest Rocky Linux 8.9 for seamless code deployment across your websites (task, web1, web2, notification). The migration involves setting up a new instance on Rocky Linux, transferring configurations, plugins, and jobs, and rigorous testing to ensure uninterrupted multi-website code deployment. My experience in Jenkins server management, migrations, and multi-website deployments positions me to execute this transition efficiently. The estimated timeline for the migration around 40-50 hours encompassing server installation, Jenkins setup, configuration migration, and thorough testing for a smooth transition.