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Fallback to executing ps(1) in case we hit an unknown psgo descriptor.
This ensures backwards compatibility with docker-top, which was purely
ps(1) driven.
Also support comma-separated descriptors as input.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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add the ability for the remote client to display a container's running
processes.
Signed-off-by: baude <bbaude@redhat.com>
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In cases where the remote client culls options to a command, we need to
be sure that the lookup for that flag does not result in a nil pointer.
To do so, we add a Remote attribute to the podman struct and then cli
helper funcs are now aware they are remote.
Signed-off-by: baude <bbaude@redhat.com>
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simplify the rootless implementation to use a single user namespace
for all the running containers.
This makes the rootless implementation behave more like root Podman,
where each container is created in the host environment.
There are multiple advantages to it: 1) much simpler implementation as
there is only one namespace to join. 2) we can join namespaces owned
by different containers. 3) commands like ps won't be limited to what
container they can access as previously we either had access to the
storage from a new namespace or access to /proc when running from the
host. 4) rootless varlink works. 5) there are only two ways to enter
in a namespace, either by creating a new one if no containers are
running or joining the existing one from any container.
Containers created by older Podman versions must be restarted.
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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in the few places where we care about skipping the storage
initialization, we can simply use the process effective UID, instead
of relying on a global boolean flag.
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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Signed-off-by: Ed Santiago <santiago@redhat.com>
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Cleanup lots of help information to look good when displayed.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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Allow to pass additional FDs to the process being executed.
Closes: https://github.com/containers/libpod/issues/2372
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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Conceptually simple: include, where applicable, a brief
description of command-line options for each subcommand.
Signed-off-by: Ed Santiago <santiago@redhat.com>
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in the case of the remote-client, it was decided to hide the latest
flag to avoid confusion for end-users on what the "last" container,
volume, or pod are.
Signed-off-by: baude <bbaude@redhat.com>
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Signed-off-by: TomSweeneyRedHat <tsweeney@redhat.com>
Adds the 4th chunk of Cobra Examples to the CLI help.
One more chunk of 10 to complete.
Signed-off-by: TomSweeneyRedHat <tsweeney@redhat.com>
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Subcommands should not be showing the global flags. This causes the important
information to scroll off the screen.
Also fixed a typo on runCommmand (Too many 'm's)
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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In the previous CLI, we had an accurate depiction of commands
available for the remote client and those available for the
local client.
Signed-off-by: baude <bbaude@redhat.com>
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We intend to migrate to the cobra cli from urfave/cli because the
project is more well maintained. There are also some technical reasons
as well which extend into our remote client work.
Signed-off-by: baude <bbaude@redhat.com>
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Signed-off-by: Qi Wang <qiwan@redhat.com>
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Don't print potentially verbose help messages in case of usage errors,
but print only the usage error followed by a pointer to the command's
help. This aligns with Docker.
```
$ podman run -h
flag needs an argument: -h
See 'podman run --help'.
```
Signed-off-by: Valentin Rothberg <vrothberg@suse.com>
Closes: #1379
Approved by: rhatdan
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join the user namespace used to create the container so that psgo can
work in the same way as with root containers.
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
Closes: #1371
Approved by: rhatdan
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Need to get some small changes into libpod to pull back into buildah
to complete buildah transition.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Closes: #1270
Approved by: mheon
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Signed-off-by: haircommander <pehunt@redhat.com>
Closes: #1284
Approved by: mheon
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Trying to play with podman top, I had a hard time
finding info on format options.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Closes: #1134
Approved by: umohnani8
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Use github.com/containers/psgo instead of execing `ps (1)`. The psgo
library enables a much more flexible interface with respect to which
data to be printed (e.g., capabilities, seccomp mode, PID, PCPU, etc.)
while the output can be parsed reliably. The library does not use
ps (1) but parses /proc and /dev instead. To list the processes of a
given container, psgo will join the mount namespace of the given
container and extract all data from there.
Notice that this commit breaks compatibility with docker-top.
Signed-off-by: Valentin Rothberg <vrothberg@suse.com>
Closes: #1113
Approved by: rhatdan
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Make the output of top tabular to be compatible with Docker. Please
note, that any user-input for `GetContainerPidInformation(...)` will be
ignored until we have found a way to generically and reliably parse ps-1
output or until there is a go-lib to extract all the data from /proc in
a ps-1 compatible fashion.
Fixes: #458
Signed-off-by: Valentin Rothberg <vrothberg@suse.com>
Closes: #939
Approved by: rhatdan
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implement varlink image functions for working with libpod with the exception of a
couple due to incompletions on the libpod side of things (build).
also, created a first pass at a libpodpy package which will stand as a client to
working with libpod's varlink methods using python.
Signed-off-by: baude <bbaude@redhat.com>
Closes: #669
Approved by: baude
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Due to the way ps arguments work, it was possible to display pids
that dont below to the container in top output. We now filter pids
that dont belong to the container out of the output. This also means
the pid column must be present in the output or we throw an error.
This resolves issue #391
Signed-off-by: baude <bbaude@redhat.com>
Closes: #400
Approved by: rhatdan
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Issue #169 describes a common failure when running podman top where
if the commands inside the container container a space in them, podman
will panic. This was occuring because we take the output from ps and
attempt to format it nicely for output and things like JSON. Given that
this cannot be predicted or dealt with programatically, the decision was
made to deprecate the format switch and simply output what ps provides
us.
Migrated top integration tests to ginkgo.
Resolves Issue: https://github.com/projectatomic/libpod/issues/169
Signed-off-by: baude <bbaude@redhat.com>
Closes: #291
Approved by: rhatdan
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It is desirable to have a shortcut for the most
recently created container. We can now use "**latest"
to represent the most recent container instead of its
container ID or name. For example:
Signed-off-by: baude <bbaude@redhat.com>
Closes: #179
Approved by: baude
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The decision is in, kpod is going to be named podman.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Closes: #145
Approved by: umohnani8
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