Runc

This article provides an overview of CRIU integration with runc and explains how to use it.

Container Checkpoint/Restore

$ mkdir -p alpine-container/rootfs && cd alpine-container

$ wget https://dl-cdn.alpinelinux.org/alpine/latest-stable/releases/x86_64/alpine-minirootfs-3.22.2-x86_64.tar.gz && \
  tar -xzf alpine-minirootfs-3.22.2-x86_64.tar.gz -C rootfs && \
  rm -f alpine-minirootfs-3.22.2-x86_64.tar.gz

$ runc spec

$ sed -i 's/"sh"/\"sh -c '\i=0; while true; do echo $i; i=$(expr $i + 1); sleep 1; done'\'\"'/' config.json

$ sed -i 's/"terminal": true/"terminal": false/g' config.json

$ runc run -d looper 0</dev/null 1>/dev/null 2>/dev/null