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Add a --dry-run flag to `podman auto-update` which will look for new
images but won't perform any pull or restart any service or container.
The "UPDATED" column will now indicate the availability of a newer image
via "pending".
```
$ podman auto-update --dry-run
UNIT CONTAINER IMAGE POLICY UPDATED
container-test.service 08fd34e533fd (test) localhost:5000/busybox registry false
```
Fixes: #9949
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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The rather raw and scarce output of `podman auto-update` has been a
thorn in my eyes for a longer while. So far, Podman would only print
updated systemd units, one per line, without further formatting.
Motivated by issue #9949 which is asking for some more useful
information in combination with a dry-run feature, I sat down and
reflected which information may come in handy.
Running `podman auto-update` will now look as follows:
```
$ podman auto-update
Trying to pull [...]
UNIT CONTAINER IMAGE POLICY UPDATED
container-test.service 08fd34e533fd (test) localhost:5000/busybox registry false
```
Also refactor the spaghetti code in the backend a bit to make it easier
to digest and maintain.
For easier testing and for the sake of consistency with other commands
listing output, add a `--format` flag.
The man page will get an overhaul in a follow up commit.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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MANPAGE_SYNTAX was edited.
The following manpages have been adapted to the MANPAGE_SYNTAX:
- podman-container-prune
- podman-container-restore
The following manpages have had little changes:
- podman-attach
- podman-auto-update
- podman-commit
- podman-completion
- podman-container-checkpoint
- podman-container-cleanup
- podman-container-exists
Signed-off-by: Alexander Richter <67486332+Procyhon@users.noreply.github.com>
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Updated version for the MANPAGE_SYNTAX and adaption of the syntax for
the manpages of podman-commit, podman-attach, and podman-auto-update.
Signed-off-by: Alexander Richter <67486332+Procyhon@users.noreply.github.com>
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Fixes a small typo in the man page. :slightly_smiling_face:
Signed-off-by: rugk <rugk+git@posteo.de>
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Commit 800a2e2d35 introduced a way to disable the conversion of `--`into
an en dash on docs.podman.io, so the ugly workaround of escaping the
dashes is no longer necessary.
Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
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In the case of generate kube the auto-update labels will be converted into kube annotations and for play kube they will be converted back to labels since that's what podman understands
Signed-off-by: Eduardo Vega <edvegavalerio@gmail.com>
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changed struct to policyMapper
change "image" to "registry" in multiple locations
Updated documentation with registry alias & autoupdate local
Added relevant test
Signed-off-by: Parker Van Roy <pvanroy@redhat.com>
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Escape the two dashes, otherwise they are combined into one long dash.
I tested that this change is safe and still renders correctly on github
and with the man pages.
This commit also contains a small change to make it build locally.
Assuming you have the dependencies installed you can do:
```
cd docs
make html
```
Preview the html files in docs/build/html with
`python -m http.server 8000 --directory build/html`.
Fixes containers/podman.io#373
Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
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Signed-off-by: xcffl <2216902+xcffl@users.noreply.github.com>
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Fixes: #8605
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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Change the docs markdown so that flag names will be h4 headers.
Sphinx will automatically add anchors to headers. Add css to
make sure the flag names are not to big compared to the text.
The man pages also still renders fine but it looks a bit different.
Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
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These options are now fully supported in the remote API and should no
longer be hidden and/or documented as non supported.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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Clarify in the help message and the man page that auto updates only work
with systemd units that are similar to the ones from `generate systemd
--new`. Units that merely start/stop a container do not work as they
will use the same image.
Fixes: #6793
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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New functionality in hack/man-page-checker: start cross-
referencing the man page 'Synopsis' line against the
output of 'podman foo --help'. This is part 1, flag/option
consistency. Part 2 (arg consistency) is too big and will
have to wait for later.
flag/option consistency means: if 'podman foo --help'
includes the string '[flags]' in the Usage message,
make sure the man page includes '[*options*]' in its
Synopsis line, and vice-versa. This found several
inconsistencies, which I've fixed.
While doing this I realized that Cobra automatically
includes a 'Flags:' subsection in its --help output
for all subcommands that have defined flags. This
is great - it lets us cross-check against the
usage synopsis, and make sure that '[flags]' is
present or absent as needed, without fear of
human screwups. If a flag-less subcommand ever
gets extended with flags, but the developer forgets
to add '[flags]' and remove DisableFlagsInUseLine,
we now have a test that will catch that. (This,
too, caught two instances which I fixed).
I don't actually know if the new man-page-checker
functionality will work in CI: I vaguely recall that
it might run before 'make podman' does; and also
vaguely recall that some steps were taken to remedy
that.
Signed-off-by: Ed Santiago <santiago@redhat.com>
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Signed-off-by: Peter Oliver <git@mavit.org.uk>
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Signed-off-by: Ondřej Kraus <neverberlerfellerer@gmail.com>
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Support using custom authfiles for auto updates by adding a new
`--authfile` flag and passing it down into the backend.
Also do some minor fixes in the help text and the man page.
Fixes: #6159
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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Add support to auto-update containers running in systemd units as
generated with `podman generate systemd --new`.
`podman auto-update` looks up containers with a specified
"io.containers.autoupdate" label (i.e., the auto-update policy).
If the label is present and set to "image", Podman reaches out to the
corresponding registry to check if the image has been updated. We
consider an image to be updated if the digest in the local storage is
different than the one of the remote image. If an image must be
updated, Podman pulls it down and restarts the container. Note that the
restarting sequence relies on systemd.
At container-creation time, Podman looks up the "PODMAN_SYSTEMD_UNIT"
environment variables and stores it verbatim in the container's label.
This variable is now set by all systemd units generated by
`podman-generate-systemd` and is set to `%n` (i.e., the name of systemd
unit starting the container). This data is then being used in the
auto-update sequence to instruct systemd (via DBUS) to restart the unit
and hence to restart the container.
Note that this implementation of auto-updates relies on systemd and
requires a fully-qualified image reference to be used to create the
container. This enforcement is necessary to know which image to
actually check and pull. If we used an image ID, we would not know
which image to check/pull anymore.
Fixes: #3575
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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