CRIU
Checkpoint/Restore In Userspace, or CRIU (pronounced kree-oo, IPA: /kr??/, Russian: ????), is a Linux software. It can freeze a running container (or an individual application) and checkpoint its state to disk.
Cost / License
- Free
- Open Source
Platforms
- Linux
Features
- Zero Downtime
Tags
- userfaultfd
- snapshot
- Containers
- suspend
- restore
- migration
- memory-tracking
- Linux
- checkpoint
- parasite
- highly-available
- dmtcp
- post-copy
- blcr
- criu
CRIU information
What is CRIU?
Checkpoint/Restore In Userspace, or CRIU (pronounced kree-oo, IPA: /kr??/, Russian: ????), is a Linux software. It can freeze a running container (or an individual application) and checkpoint its state to disk. The data saved can be used to restore the application and run it exactly as it was during the time of the freeze. Using this functionality, application or container live migration, snapshots, remote debugging, and many other things are now possible.
CRIU started as a project of Virtuozzo, and grew with the tremendous help from the community. It is currently used by (integrated into) OpenVZ, LXC/LXD, Docker, Podman, and other software, and packaged for many Linux distributions.


