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I didn't believe that this was actually legal, but it looks like
it is. And, unlike our previous understanding (host port being
empty means just use container port), empty host port actually
carries the same meaning as `--expose` + `--publish-all` (that
is, assign a random host port to the given container port). This
requires a significant rework of our port handling code to handle
this new case. I don't foresee this being commonly used, so I
optimized having a fixed port number as fast path, which this
random assignment code running after the main port handling code
only if necessary.
Fixes #6806
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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We have a flag, --syslog, for telling logrus to log to syslog as
well as to the terminal. Previously, this flag also set the exit
command for containers to use `--syslog` (otherwise all output
from exit commands is lost). I attempted to replicate this with
Podman v2.0, but quickly ran into circular import hell (the flag
is defined in cmd/podman, I needed it in cmd/podman/containers,
cmd/podman imports cmd/podman/containers already, etc). Instead,
let's just set the syslog flag automatically on
`--log-level=debug` so we log exit commands automatically when
debug-level logs are requested. This is consistent with Conmon
and seems to make sense.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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Add --preservefds to podman run
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Add --preservefds to podman run. close https://github.com/containers/libpod/issues/6458
Signed-off-by: Qi Wang <qiwan@redhat.com>
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The `--privileged` flag does not conflict with `--group-add`
(this one was breaking Toolbox) and does not conflict with most
parts of `--security-opt` (this was breaking Openstack).
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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There are three different priorities for applying env variables:
1) environment/config file environment variables
2) image's config
3) user overrides (--env)
The third kind are known to the client, while the default config and image's
config is handled by the backend.
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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To try and identify differences between Podman v1.9 and master,
I ran a series of `podman run` commands with various flags
through each, then inspecting the resulting containers and diffed
the inspect JSON between each. This identified a number of issues
which are fixed in this PR.
In order of discovery:
- Podman v2 gave short names for images, where Podman v1 gave the
fully-qualified name. Simple enough fix (get image tags and use
the first one if they're available)
- The --restart flag was not being parsed correctly when a number
of retries was specified. Parsing has been corrected.
- The -m flag was not setting the swap limit (simple fix to set
swap in that case if it's not explicitly set by the user)
- The --cpus flag was completely nonfunctional (wired in its
logic)
Tests have been added for all of these to catch future
regressions.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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As part of this, make a major change to the type we use to
represent port mappings in SpecGen (from using existing OCICNI
structs to using our own custom one). This struct has the
advantage of supporting ranges, massively reducing traffic over
the wire for Podman commands using them (for example, the
`podman run -p 5000-6000` command will now send only one struct
instead of 1000). This struct also allows us to easily validate
which ports are in use, and which are not, which is necessary for
--expose.
Once we have parsed the ports from the new struct, we can produce
an accurate map including all currently requested ports, and use
that to determine what ports need to be exposed (some requested
exposed ports may already be included in a mapping from --publish
and will be ignored) and what open ports on the host we can map
them to.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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This should complete Podmanv2's support for volume-related flags.
Most code was sourced from the old pkg/spec implementation with
modifications to account for the split between frontend flags
(volume, mount, tmpfs) and the backend flags implemented here.
Also enables tests for podman run with volumes
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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This enables the --volume, --mount, and --tmpfs flags in
Podmanv2. It does not enable init-related flags, image volumes,
and --volumes-from.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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Namespaces have now been changed to properly handle all cases.
Spec handling code for namespaces was consolidated in a single
function.
Still missing:
- Image ports
- Pod namespaces likely still broken in Podmanv2
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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We were not handling the parsing of --ip. This pr adds validation
checks and now will support the flag.
Move validation to the actual parsing of the network flags.
We should only parse the dns flags if the user changed them. We don't
want to pass default options if set in containers.conf to the server.
Potential for duplicating defaults.
Add support for --dns-opt flag passing
Begin handling of --network flag, although we don't have a way right now
to translate a string into a specgen.Namespace.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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SELinux label options processing fixes, should allow system tests to pass.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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use libpod only in the specgen/generate package so that the remote clients do not inherit libpod bloat.
Signed-off-by: Brent Baude <bbaude@redhat.com>
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create a container in podmanv2 using specgen approach. this is the core implementation and still has quite a bit of code commented out specifically around volumes, devices, and namespaces. need contributions from smes on these parts.
Signed-off-by: Brent Baude <bbaude@redhat.com>
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using the factory approach similar to container, we now create pods based on a pod spec generator. wired up the podmanv2 pod create command, podcreatewithspec binding, simple binding test, and apiv2 endpoint.
also included some code refactoring as it introduced as easy circular import.
Signed-off-by: Brent Baude <bbaude@redhat.com>
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This will be used for remote creation of pods initially.
Signed-off-by: Matthew Heon <mheon@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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this uses the specgen structure to create containers rather than the outdated createconfig. right now, only the apiv2 create is wired up. eventually the cli will also have to be done.
Signed-off-by: Brent Baude <bbaude@redhat.com>
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warning: the naming of this might change as well as the location.
this is a build on a PR from mheon from last year that proposes a shift from our current approach of creating containers based on the arbitrarily made createconfig. the new approach would be to have a specification that is detached from the podman cli. the spec could then be generated and used to make a container. this theoretically is the beginning of a long-needed refactor involving how we get from the cli -> libpod | apiv2 -> libpod with code re-use and less duplication.
the intent is to build the apiv2 container creation based on this approach only. wiring to the podman cli will happen after the fact.
Signed-off-by: Brent Baude <bbaude@redhat.com>
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The current Libpod pkg/spec has become a victim of the better
part of three years of development that tied it extremely closely
to the current Podman CLI. Defaults are spread across multiple
places, there is no easy way to produce a CreateConfig that will
actually produce a valid container, and the logic for generating
configs has sprawled across at least three packages.
This is an initial pass at a package that generates OCI specs
that will supersede large parts of the current pkg/spec. The
CreateConfig will still exist, but will effectively turn into a
parsed CLI. This will be compiled down into the new SpecGenerator
struct, which will generate the OCI spec and Libpod create
options.
The preferred integration point for plugging into Podman's Go API
to create containers will be the new CreateConfig, as it's less
tied to Podman's command line. CRI-O, for example, will likely
tie in here.
Signed-off-by: Matthew Heon <mheon@redhat.com>
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