1podman-system-migrate(1) General Commands Manual podman-system-migrate(1)
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6 podman-system-migrate - Migrate existing containers to a new podman
7 version
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11 podman system migrate [options]
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15 podman system migrate migrates containers to the latest podman version.
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18 podman system migrate takes care of migrating existing containers to
19 the latest version of podman if any change is necessary.
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22 "Rootless Podman uses a pause process to keep the unprivileged name‐
23 spaces alive. This prevents any change to the /etc/subuid and /etc/sub‐
24 gid files from being propagated to the rootless containers while the
25 pause process is running.
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28 For these changes to be propagated, it is necessary to first stop all
29 running containers associated with the user and to also stop the pause
30 process and delete its pid file. Instead of doing it manually, podman
31 system migrate can be used to stop both the running containers and the
32 pause process. The /etc/subuid and /etc/subgid files can then be edited
33 or changed with usermod to recreate the user namespace with the newly
34 configured mappings.
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38 --new-runtime=runtime
39 Set a new OCI runtime for all containers. This can be used after a
40 system upgrade which changes the default OCI runtime to move all con‐
41 tainers to the new runtime. There are no guarantees that the contain‐
42 ers continue to work under the new runtime, as some runtimes support
43 differing options and configurations.
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47 podman(1), podman-system(1), usermod(8)
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51 April 2019, Originally compiled by Giuseppe Scrivano (gscrivan at red‐
52 hat dot com)
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56 podman-system-migrate(1)