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Thursday, May 30 • 3:00pm - 3:50pm
Case Study: Doing a Live Upgrade of Many Thousand Servers at Google from an Ancient Red Hat Distribution to Recent Debian-Based One - Marc Merlin, Google

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This talk will look at how we upgraded our ancient linux distribution on all our production servers to a more modern one based on debian stripped down and built from source. We do live upgrades of running machines using an rsync-like rollout mechanism, and we switched distributions on the fly without rebooting (we built debs and converted them to rpms for install until the entire distribution was replaced and switched to dpkg). I'll explain the issue with package pre/post install scripts when you replicate on the file level and I'll give some design details of ProdNG, our production linux image, and how we built a hermetic self hosting distribution, including building a biarch 32bit distro on 64bit systems. I'll also explain how we review images before rolling them out.

Audience: sysadmins, engineers, and managers interested on how to deal with large linux image deployment and upgrade.

avatar for Marc Merlin

Marc Merlin

Linux Geek / BOFH, Google
Marc has been using Linux since 0.99pl15f (slackware 1.1.2, 1994), both as a sysadmin and userland contributor. He has worked for various tech companies in the Silicon Valley, including Network Appliance, SGI, VA Linux, Sourceforge.net, and now Google. | He has been giving Linux related talks since 2001 and done hacking in various areas like mail with exim, mailman, SpamAssassin, as well as maintained linux distributions. | Marc currently... Read More →

Thursday May 30, 2013 3:00pm - 3:50pm

Attendees (10)