| Commit message (Collapse) | Author | Age |
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Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
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Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
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Instead of running a full sync after starting a container to pick
up its PID, grab it from Conmon instead.
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
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When we scan a container in runc and see that it no longer
exists, we already set ContainerStatusExited to indicate that it
no longer exists in runc. Now, also set an exit code and exit
time, so PS output will make some sense.
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
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When syncing container state, we normally call out to runc to see
the container's status. This does have significant performance
implications, though, and we've seen issues with large amounts of
runc processes being spawned.
This patch attempts to use stat calls on the container exit file
created by Conmon instead to sync state. This massively decreases
the cost of calling updateContainer (it has gone from an
almost-unconditional fork/exec of runc to a single stat call that
can be avoided in most states).
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
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After stopping containers, we run updateContainerStatus to sync
our state with runc (pick up exit code, for example). Then we
proceed to not save this to the database, requiring us to grab it
again on the next sync. This should remove the need to read the
exit file more than once.
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
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Fix setting of version information
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It was setting the wrong variable (CamelCase)
in the wrong module ("main", not "libpod")...
Signed-off-by: Anders F Björklund <anders.f.bjorklund@gmail.com>
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If for any reason slirp4netns fails at startup, podman waits
indefinitely. Check every second if the process is still running so
that we avoid to hang.
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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attach: fix attach when cuid is too long
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conmon creates a symlink to avoid using a too long UNIX path.
Closes: https://bugzilla.redhat.com/show_bug.cgi?id=1641800
There is still one issue when the path length of the symlink has the
same length of the attach socket parent directory since conmon fails
to create the symlink, but that must be addressed in conmon first.
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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get user and group information using securejoin and runc's user library
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for the purposes of performance and security, we use securejoin to contstruct
the root fs's path so that symlinks are what they appear to be and no pointing
to something naughty.
then instead of chrooting to parse /etc/passwd|/etc/group, we now use the runc user/group
methods which saves us quite a bit of performance.
Signed-off-by: baude <bbaude@redhat.com>
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unmount: fix error logic
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Only return `ErrCtrStateInvalid` errors when the mount counter is equal
to 1. Also fix the "can't unmount [...] last mount[..]" error which
hasn't been returned when the error passed to `errors.Errorf()` is nil.
Fixes: #1695
Signed-off-by: Valentin Rothberg <vrothberg@suse.com>
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Only changed libpod.conf file, which might not even be in use.
Signed-off-by: Anders F Björklund <anders.f.bjorklund@gmail.com>
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run performance improvements
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run prepare() -- which consists of creating a network namespace and
mounting the container image is now run in parallel. This saves 25-40ms.
Signed-off-by: baude <bbaude@redhat.com>
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We implement the securejoin method to make sure the paths to /etc/passwd and
/etc/group are not symlinks to something naughty or outside the container
image. And then instead of actually chrooting, we use the runc functions to
get information about a user. The net result is increased security and
a a performance gain from 41ms to 100us.
Signed-off-by: baude <bbaude@redhat.com>
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prevent opening the same file twice, since we re-exec podman in
rootless mode. While at it, also solve a possible race between the
check for the file and writing to it. Another process could have
created the file in the meanwhile and we would just end up overwriting
it.
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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when reading the output from conmon using the JSON methods, it appears that
JSON marshalling is higher in pprof than it really is because the pipe is
"waiting" for a response. this gives us a clearer look at the real CPU/time
consumers.
Signed-off-by: baude <bbaude@redhat.com>
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Move selinux label reservations to containers storage.
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Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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Make podman ps fast
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Like Ricky Bobby, we want to go fast.
Signed-off-by: baude <bbaude@redhat.com>
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Use more reliable check for rootless for firewall init
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We probably won't be able to initialize a firewall plugin when we
are not running as root, so we shouldn't even try. Replace the
less-effect EUID check with the rootless package's better check
to make sure we don't accidentally set up the firewall in these
cases.
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
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Add CRIU version check for checkpoint and restore
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The newly introduced CRIU version check is now used to make sure
checkpointing and restoring is only used if the CRIU version is new
enough.
Signed-off-by: Adrian Reber <areber@redhat.com>
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I've seen a runc zombie process hanging around, it is caused by not
cleaning up the "$OCI status" process. Also adjust another location
that has the same issue.
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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This should allow us to share this code with buildah.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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libpod requires new buildah and container image versions to resolve
bug #1640298
Signed-off-by: baude <bbaude@redhat.com>
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We already have functions for retrieving the container's CGroup
path, so use them instead of manually generating a path.
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
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Mount proper cgroup for systemd to manage inside of the container.
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We are still requiring oci-systemd-hook to be installed in order to run
systemd within a container. This patch properly mounts
/sys/fs/cgroup/systemd/libpod_parent/libpod-UUID on /sys/fs/cgroup/systemd inside of container.
Since we need the UUID of the container, we needed to move Systemd to be a config option of the
container.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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volume: resolve symlink paths in volumes
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ensure the volume paths are resolved in the mountpoint scope.
Otherwise we might end up using host paths.
Closes: https://github.com/containers/libpod/issues/1608
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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Signed-off-by: TomSweeneyRedHat <tsweeney@redhat.com>
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If someone runs podman as a user (uid) that is not defined in the container
we want generate a passwd file so that getpwuid() will work inside of container.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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Add ability to specify static IPs with --ip flag
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Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
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Add the --ip flag back with bash completions. Manpages still
missing.
Add plumbing to pass appropriate the appropriate option down to
libpod to connect the flag to backend logic added in the previous
commits.
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
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Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
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Signed-off-by: Matthew Heon <mheon@redhat.com>
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Adds a few missing things from writeStringToRundir() to the new
resolv.conf function, specifically relabelling and returning a
path compatible with rootless podman
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
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The vendoring issues with libnetwork were significant (it was
dragging in massive amounts of code) and were just not worth
spending the time to work through. Highly unlikely we'll ever end
up needing to update this code, so move it directly into pkg/ so
we don't need to vendor libnetwork. Make a few small changes to
remove the need for the remainder of libnetwork.
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
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Libnetwork provides a well-tested package for generating
resolv.conf from the host's that has some features our current
implementation does not. Swap to using their code and remove our
built-in implementation.
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
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podman: allow usage of gVisor as OCI runtime
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read the OCI status from stdout, not the combined stdout+stderr
stream.
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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