ContainerLab v0.75
ContainerLab has released version 0.75, introducing several new features and improvements. Users can now start, stop, and restart selected nodes in a running lab without affecting the entire setup. Additionally, templated topologies are easier to build and share, and new functionalities for managing credentials and exporting topology YAML have been added.
- ▪The new version allows for targeted start, stop, and restart commands for selected nodes in a running lab.
- ▪Templated topologies can now be built and shared more easily with improved variable file handling.
- ▪New features include the ability to export rendered topology YAML for better debugging and version control.
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Release 0.75# 2026-04-27 · Full Changelog Start, stop, and restart selected nodes# The day has finally come when you can start, stop, and restart selected nodes in a running lab without nuking the whole lab. 🎉🎉🎉 The start, stop, and restart commands can now target a subset of nodes in a running lab. Pass --node (repeatable or comma-separated) to start or stop only the listed containers. The same limitations as restart apply: veth-based dataplane links, single-container nodes, and a few other cases remain unsupported for partial lifecycle. This feature touched a lot of containerlab internal and there might be some fallout. Please report any issues you encounter in the issue tracker or our discord.
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