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authorValentin Rothberg <rothberg@redhat.com>2021-07-28 15:19:04 +0200
committerValentin Rothberg <rothberg@redhat.com>2021-08-05 15:20:38 +0200
commit30df551bde460f4f37d6dbd373701873fa5353dc (patch)
treea1a48d3b25706006ac391ac271ed21c3a6191c8f /cni
parent117583c293713f2baa920c4035e820ad59fe6622 (diff)
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auto-update: simple rollback
Add support for simple rollbacks during `podman auto-update`. Rollbacks are enabled by default. If a systemd unit cannot be restarted after an update, the previous image will be retagged and the unit will be restarted a second time. Add system tests for rollbacks. Also fix a bug in the restart sequence; we have to use the channel to actually know whether the restart was successful or not. NOTE: To make rollbacks really useful, users must run their containers with `--sdnotify=container` such that the containers send the ready message over the (mounted) socket. This way, restarting the systemd units during auto update will block until the message has been received (or a timeout kicked in). Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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