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>
add a global flag for --max-workers so users can limit the number
of parallel operations for a given function. also, when not limited
by max-workers, we implement a heuristic function that returns the
number of preferred parallel workers based on the number of CPUs and
the given operation.
Signed-off-by: baude <bbaude@redhat.com>
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>
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>
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>
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>
This removes duplicate code paths which has been previously factored out
as getAllOrLatestContainers().
Signed-off-by: Adrian Reber <areber@redhat.com>
Instead of duplicating the same code in multiple commands this uses the
newly added function checkAllAndLatest() instead.
Signed-off-by: Adrian Reber <areber@redhat.com>
Just as the checkAllAndLatest() function the new code in
getAllOrLatestContainers() is used in some commands and duplicated. This
factors out this code to be used in other places without duplicating it.
Signed-off-by: Adrian Reber <areber@redhat.com>
The check about the --all and --latest option is used and repeated and
some commands. Factor it out and put it into common.
Signed-off-by: Adrian Reber <areber@redhat.com>
* Added tox configuration to test python 3.4, 3.5 and 3.6.
Tox testing not enabled on every PR
* Updated MANIFEST.ini to support tox
* Correct comments
Fixes#1641
Signed-off-by: Jhon Honce <jhonce@redhat.com>
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>
Giuseppe Scrivano
OpenShift Merge Robot
baude
Daniel J Walsh
Anders F Björklund
Qi Wang
Chris Evich
Adrian Reber
Jhon Honce
Matthew Heon