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CRIU can be used to assist in application debugging.
== Use cases ==
; Remote analysis
: Take periodic snapshots of a running application, transfer those to another machine to debug, analyse its behavior, performance etc.
; Deferred debug
: An application in production is not working properly and needs a restart ASAP. Checkpoint it before restarting, and use the dump later for debug.
; Problem reporting
: An application misbehaves. Checkpoint it and send the dump together with the problem description to its author/maintainer.
== HOWTO ==
=== Checkpoint ===
Use <code>criu dump</code> as usual. If the app is not running inside an isolated container,
you might need to use a few options described in [[external resources]].
Note you also need to include a file system snapshot; see [[Filesystem C/R]] for details.
=== Restore ===
To restore, use [[criu-ns]] tool, it solves a number of issues.
== See also ==
* [[Usage scenarios]]
* [[CR in namespace]]
[[Category:HOWTO]]
== Use cases ==
; Remote analysis
: Take periodic snapshots of a running application, transfer those to another machine to debug, analyse its behavior, performance etc.
; Deferred debug
: An application in production is not working properly and needs a restart ASAP. Checkpoint it before restarting, and use the dump later for debug.
; Problem reporting
: An application misbehaves. Checkpoint it and send the dump together with the problem description to its author/maintainer.
== HOWTO ==
=== Checkpoint ===
Use <code>criu dump</code> as usual. If the app is not running inside an isolated container,
you might need to use a few options described in [[external resources]].
Note you also need to include a file system snapshot; see [[Filesystem C/R]] for details.
=== Restore ===
To restore, use [[criu-ns]] tool, it solves a number of issues.
== See also ==
* [[Usage scenarios]]
* [[CR in namespace]]
[[Category:HOWTO]]