系统服务守护进程 systemd 的 14 年 [LWN.net]

发布于 2 月 18 日

Summary: This article discusses various aspects of systemd. It starts by emphasizing the importance of subscriptions to LWN.net and then moves on to the history and development of systemd. It covers its predecessors like System V init and Upstart, and how systemd emerged as a more modular and user-friendly alternative. The talk also details systemd's influence on major Linux distributions, its growth in terms of community and code size, and its approach to dependencies. It discusses the concepts that define systemd, such as the separation of /etc, /run, and /usr, and the importance of declarative behavior. The future goals and challenges of systemd are also outlined, including boot and system integrity, rethinking IPC with varlink, considering Rust, and moving towards image-based operating systems. There are also questions and answers about systemd's potential to replace GRUB and issues with its DNS resolution daemon.
Main points:
- Subscriptions are crucial for LWN.net's survival.
- Systemd's history includes predecessors like System V init and Upstart.
- Systemd is widely used in major Linux distributions.
- It has a vibrant community and a growing codebase.
- Systemd focuses on modularity and clear concepts.
- Future goals include boot integrity and IPC rethinking.
- There are challenges with Rust and image-based systems.
Key details:
- Fedora was the first to switch to systemd in 2011.
- Systemd has about 150 separate binaries.
- It uses dlopen() for dependencies.
- Systemd has specific rules for what belongs in it.
- Goals include making systems more secure and efficient.
- Challenges involve cultural and technical issues.

阅读 9