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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 /cmd/podman
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>
Diffstat (limited to 'cmd/podman')
-rw-r--r--cmd/podman/auto-update.go1
1 files changed, 1 insertions, 0 deletions
diff --git a/cmd/podman/auto-update.go b/cmd/podman/auto-update.go
index 9622088d5..8364181d2 100644
--- a/cmd/podman/auto-update.go
+++ b/cmd/podman/auto-update.go
@@ -54,6 +54,7 @@ func init() {
_ = autoUpdateCommand.RegisterFlagCompletionFunc(authfileFlagName, completion.AutocompleteDefault)
flags.BoolVar(&autoUpdateOptions.DryRun, "dry-run", false, "Check for pending updates")
+ flags.BoolVar(&autoUpdateOptions.Rollback, "rollback", true, "Rollback to previous image if update fails")
flags.StringVar(&autoUpdateOptions.format, "format", "", "Change the output format to JSON or a Go template")
_ = autoUpdateCommand.RegisterFlagCompletionFunc("format", common.AutocompleteFormat(autoUpdateOutput{}))