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Container Live Migration

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 Reber, Adrian

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Container Live Migration
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490
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CC Attribution 2.0 Belgium:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
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The difficult task to checkpoint and restore a process is used in many container runtimes to implement container live migration. This talk will give details how CRIU is able to checkpoint and restore processes, how it is integrated in different container runtimes and which optimizations CRIU offers to decrease the downtime during container migration. In this talk I want to provide details how CRIU checkpoints and restores a process. Starting from ptrace() to pause the process, how parasite code is injected into the process to checkpoint the process from its own address space. How CRIU transforms itself to the restored process during restore. How SELinux and seccomp is restored. I want to end this talk with an overview about how CRIU is integrated in different container runtimes to implement container live migration.