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The 'podman run --mount' flag previously allowed the 'ro' option
to be specified, but was missing the ability to set it to a bool
(as is allowed by docker). Add that. While we're at it, allow
setting 'rw' explicitly as well.
Fixes #2980
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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Revert "rootless: Rearrange setup of rootless containers"
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This reverts commit 80dcd4bebcdc8e280f6b43228561d09c194c328b.
Signed-off-by: baude <bbaude@redhat.com>
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Touch up XDG, add rootless links
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Touch up a number of formating issues for XDG_RUNTIME_DIRS in a number
of man pages. Make use of the XDG_CONFIG_HOME environment variable
in a rootless environment if available, or set it if not.
Also added a number of links to the Rootless Podman config page and
added the location of the auth.json files to that doc.
Signed-off-by: TomSweeneyRedHat <tsweeney@redhat.com>
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various fixes for varlink endpoints
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when using build, require a "more" connection to get logs.
when pulling a non-existent image, do not crash varlink connection.
Fixes: #3714
Fixes: #3715
Signed-off-by: baude <bbaude@redhat.com>
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restore: correctly set StartedTime
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A container restored from an exported checkpoint did not have its
StartedTime set. Which resulted in a status like 'Up 292 years ago'
after the restore.
This just sets the StartedTime to time.Now() if a container is restored
from an exported checkpoint.
Signed-off-by: Adrian Reber <areber@redhat.com>
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fix system df crashes on unnamed images
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if the image is unnamed, pass an nil slice to the parse repotags function instead of getting the image name by index.
after this patch, unnamed images will be shown as <none>
```
Images space usage:
REPOSITORY TAG IMAGE ID CREATED SIZE SHARED SIZE UNIQUE SIZE CONTAINERS
docker.io/library/ubuntu bionic 3556258649b2 11 days ago 66.6MB 0B 66.6MB 0
<none> <none> dd8a8db2c79b 11 days ago 986MB 66.6MB 919MB 0
```
Signed-off-by: Qi Wang <qiwan@redhat.com>
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container stop: kill conmon
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Old versions of conmon have a bug where they create the exit file before
closing open file descriptors causing a race condition when restarting
containers with open ports since we cannot bind the ports as they're not
yet closed by conmon.
Killing the old conmon PID is ~okay since it forces the FDs of old
conmons to be closed, while it's a NOP for newer versions which should
have exited already.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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restore: added --ignore-static-ip option
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If a container is restored multiple times from an exported checkpoint
with the help of '--import --name', the restore will fail if during
'podman run' a static container IP was set with '--ip'. The user can
tell the restore process to ignore the static IP with
'--ignore-static-ip'.
Signed-off-by: Adrian Reber <areber@redhat.com>
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podman events format json
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Enable podman events to format the output as jsonline
Signed-off-by: Qi Wang <qiwan@redhat.com>
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add eventlogger to info
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to help with future debugging, we now display the type of event logger
being used inside podman info -> host.
Signed-off-by: baude <bbaude@redhat.com>
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rootless: Rearrange setup of rootless containers ***CIRRUS: TEST IMAGES***
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In order to run Podman with VM-based runtimes unprivileged, the
network must be set up prior to the container creation. Therefore
this commit modifies Podman to run rootless containers by:
1. create a network namespace
2. pass the netns persistent mount path to the slirp4netns
to create the tap inferface
3. pass the netns path to the OCI spec, so the runtime can
enter the netns
Closes #2897
Signed-off-by: Gabi Beyer <gabrielle.n.beyer@intel.com>
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Provide information stating what the postConfigureNetNS option
is used for.
Signed-off-by: Gabi Beyer <gabrielle.n.beyer@intel.com>
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Add rootless NFS and OverlayFS warnings to docs
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Add warnings/work arounds about NFS and OverlayFS to the troubleshooting guide
and also the main podman page. Verified that these warnings are on the rootless
page already.
Signed-off-by: TomSweeneyRedHat <tsweeney@redhat.com>
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honor libpod.conf in /usr/share/containers
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we should be looking for the libpod.conf file in /usr/share/containers
and not in /usr/local. packages of podman should drop the default
libpod.conf in /usr/share. the override remains /etc/containers/ as
well.
Fixes: #3702
Signed-off-by: baude <bbaude@redhat.com>
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Don't log errors to the screen when XDG_RUNTIME_DIR is not set
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Drop errors to debug when trying to setup the runtimetmpdir. If the tool
can not setup a runtime dir, it will error out with a correct message
no need to put errors on the screen, when the tool actually succeeds.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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Add handling for empty LogDriver
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There are two cases logdriver can be empty, if it wasn't set by libpod, or if the user did --log-driver ""
The latter case is an odd one, and the former is very possible and already handled for LogPath.
Instead of printing an error for an entirely reasonable codepath, let's supress the error
Signed-off-by: Peter Hunt <pehunt@redhat.com>
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System tests: resolve hang in rawhide rootless
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Fedora CI tests are failing on rawhide under kernel
5.3.0-0.rc1.git3.1.fc31 (rhbz#1736758). But there's
another insidious failure, a 4-hour hang in the
rootless tests on the same CI system. The culprit
line is in the podman build test, but it's actually
BATS itself that hangs, not the build command -- which
suggests that it's the usual FD 3 problem (see BATS README).
It would seem that podman is forking a process that
inherits fd 3 but that process is not getting cleaned
up when podman crashes upon encountering the kernel bug.
Today it's podman build, tomorrow it might be something
else. Let's just run all podman invocations in run_podman
with a non-bats FD 3.
Signed-off-by: Ed Santiago <santiago@redhat.com>
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Add Capability support to play kube
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Take capabilities written in a kube and add to a container
adapt test suite and write cap-add/drop tests
Signed-off-by: Peter Hunt <pehunt@redhat.com>
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capabilities that were added and dropped were several times duplicated. Fix this
Signed-off-by: Peter Hunt <pehunt@redhat.com>
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Fix typo
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Signed-off-by: Fabian Zoske <git@fzoske.de>
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Fix memory leak with exit files
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Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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When forcibly removing a container, we are initiating an explicit
stop of the container, which is not reflected in 'podman events'.
Swap to using our standard 'stop()' function instead of a custom
one for force-remove, and move the event into the internal stop
function (so internal calls also register it).
This does add one more database save() to `podman remove`. This
should not be a terribly serious performance hit, and does have
the desirable side effect of making things generally safer.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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The logfile driver was not aware that system events existed.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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We need this specifically for tests, but others may find it
useful if they don't explicitly need events and don't want the
performance implications of using them.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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Podman-in-podman (and possibly ubuntu) have "issues" with
journald. Let's just use file instead to be safe.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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As we previously removed our exit code retrieval code to stop a
memory leak, we need a new way of doing this. Fortunately, events
is able to do the job for us.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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the exit file
If the container exit code needs to be retained, it cannot be retained
in tmpfs, because libpod runs in a memcg itself so it can't leave
traces with a daemon-less design.
This wasn't a memleak detectable by kmemleak for example. The kernel
never lost track of the memory and there was no erroneous refcounting
either. The reference count dependencies however are not easy to track
because when a refcount is increased, there's no way to tell who's
still holding the reference. In this case it was a single page of
tmpfs pagecache holding a refcount that kept pinned a whole hierarchy
of dying memcg, slab kmem, cgropups, unrechable kernfs nodes and the
respective dentries and inodes. Such a problem wouldn't happen if the
exit file was stored in a regular filesystem because the pagecache
could be reclaimed in such case under memory pressure. The tmpfs page
can be swapped out, but that's not enough to release the memcg with
CONFIG_MEMCG_SWAP_ENABLED=y.
No amount of more aggressive kernel slab shrinking could have solved
this. Not even assigning slab kmem of dying cgroups to alive cgroup
would fully solve this. The only way to free the memory of a dying
cgroup when a struct page still references it, would be to loop over
all "struct page" in the kernel to find which one is associated with
the dying cgroup which is a O(N) operation (where N is the number of
pages and can reach billions). Linking all the tmpfs pages to the
memcg would cost less during memcg offlining, but it would waste lots
of memory and CPU globally. So this can't be optimized in the kernel.
A cronjob running this command can act as workaround and will allow
all slab cache to be released, not just the single tmpfs pages.
rm -f /run/libpod/exits/*
This patch solved the memleak with a reproducer, booting with
cgroup.memory=nokmem and with selinux disabled. The reason memcg kmem
and selinux were disabled for testing of this fix, is because kmem
greatly decreases the kernel effectiveness in reusing partial slab
objects. cgroup.memory=nokmem is strongly recommended at least for
workstation usage. selinux needs to be further analyzed because it
causes further slab allocations.
The upstream podman commit used for testing is
1fe2965e4f672674f7b66648e9973a0ed5434bb4 (v1.4.4).
The upstream kernel commit used for testing is
f16fea666898dbdd7812ce94068c76da3e3fcf1e (v5.2-rc6).
Reported-by: Michele Baldessari <michele@redhat.com>
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
<Applied with small tweaks to comments>
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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