LinuxCon Japan is the premiere Linux conference in Asia that brings together a unique blend of core developers, administrators, users, community managers and industry experts.
CloudOpen Japan is a conference celebrating and exploring the open source projects, technologies and companies who make up the cloud. It’s built on a belief that open works: for users, for industry and for technology.
Software is often "invisible," making it difficult to track and control. As a result, it is rarely subject to the rigorous supply chain management systems employed for hardware. But as open source software becomes more ubiquitous in all industries, it is more important than ever to track and manage what's used, and gain the right level of visibility and control to mitigate potential risks. This presentation by Andrew Aitken - Senior Vice President of Olliance Consulting, will help senior development managers, business executives and supply chain managers, along with anyone interested in broader open source use in the supply chain, learn to gain control of the software supply chain by discussing:
Perf is powerful and low-overhead profiling/tracing tool. It can analyse not only kernel but also userspace programs. This presentation will mainly focus userspace program analysis and show advantages and problems by introducing a use-case. In operation phase of enterprise systems, accountability is one of most important thing. When the system causes panic or slowdown, we must analyse it and show the evidence. Since the reason of failure is various, the tool which can be analyzed integrative is important for it. We think that perf is excellent in such a case.
The presentation is mainly targeted at support enginneers, program developers and system operators. Knowledge of program analysis technologies such as profiling, tracer, executable file format(elf and dwarf) is advantageous, but not required.
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.
