The script allows for analyzing the symbols of a go binary passed as an
argument. The tabular output looks as follows:
336 unicode/utf8.DecodeLastRune
323 unicode/utf8.DecodeLastRuneInString
518 unicode/utf8.DecodeRune
518 unicode/utf8.DecodeRuneInString
337 unicode/utf8.EncodeRune
The first column indicates the size in bytes of the symbol in the second
column. Note that only text symbols are considered, other symbols from
the data or the bss segment are ignored to avoid information overload.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
Analyse the size of all go-packages used during the build process via
the newly added `hack/analyses/go-archive-analysis.sh` script. The
script expects the `WORK` environment variable to be set, which points
to a temporary work directory generated by `go build`. To generate such
a work directory, set the `BUILDFLAGS="-work -a"`:
* `-work` for creating the work directory
* `-a` to force rebuilding all packages even when already cached
The workflow may look as follows:
```
$ BUILDFLAGS="-work -a" make podman
[...]
WORK=/tmp/go-build127001249
$ WORK=/tmp/go-build127001249 ./hack/analyses/go-archive-analysis.sh
```
The output of the script has the format `$SIZE $PACKAGE` where $SIZE is
the size of the compiled version of the go package (i.e., `.a` file) and
$PACKAGE for the corresponding package, for instance, `math/big` for a
stdlib package or vendor/... for vendored packages.
Credits to the authors of https://github.com/jondot/goweight, which
inspired this work.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
Docker CLI calls the healthcheck flags "--health-*", instead of
"--healthcheck-*".
Introduce the former, in order to keep compatibility, and alias
the later, in order to avoid breaking current usage.
Change "--healthcheck-*" to "--health-*" in the docs and tests.
Signed-off-by: Hunor Csomortáni <csomh@redhat.com>
An image with "HEALTHCHECK CMD ['']" is valid but as there is no command
defined the healthcheck will fail. Reject such a configuration.
Fixes#3507
Signed-off-by: Stefan Becker <chemobejk@gmail.com>
If the image was built with "HEALTHCHECK NONE" then we should create a
container without healthcheck configuration. Otherwise executing the
healthcheck on the container will return "unhealthy" instead of the
correct error message that the container doesn't have a healthcheck.
We also ignore the healthcheck configuration if the command list is
empty or the command string is empty.
Fixes#3525
Signed-off-by: Stefan Becker <chemobejk@gmail.com>
If the image doesn't provide any options, e.g. interval, timeout, etc.,
then apply the Docker defaults when creating the container. Otherwise
the defaults will be left 0 and podman doesn't schedule the healtcheck
service & timer for the container or incorrectly reports unhealthy state
when the check is executed.
Fixes#3525
Signed-off-by: Stefan Becker <chemobejk@gmail.com>
- remove duplicate check, already called in HealthCheck()
- reject zero-length command list and empty command string as errorneous
- support all Docker command list keywords: NONE, CMD or CMD-SHELL
- use Docker default "/bin/sh -c" for CMD-SHELL
Fixes#3507
Signed-off-by: Stefan Becker <chemobejk@gmail.com>
Various tasks and scripts behave differently depending on whether or not
the build is running against a PR or on a branch, post-merge. However,
a great number of them are hard-coded to the string 'master' as the
destination. Since this is not always the case (there are other
relevant branches), it makes sense to abstract the references with a
single definition.
Add a top-level `$DEST_BRANCH` variable to CI, and otherwise
default to 'master' when unset. This enables running CI builds on
additional branches without the overhead of updating all the static
references to 'master'. Simply update `$DEST_BRANCH` at the top-level
and all branch-conditional logic will function as intended.
Signed-off-by: Chris Evich <cevich@redhat.com>
Over time unless they're removed, the project could grow quite a large
collection of VM images. While generally cheap (less than a penny each,
per month), these will become a significant cost item if not kept
in-check.
Add a specialized container for handling image-pruning, but limit
it to only finding and printing (not actually deleting) images.
Also update the image-building workflow so that base-images used to
compose cache-images are also labeled with metadata.
N/B: As an additional safeguard, the service account which
executes the new container in production *DOES NOT*
have access to delete images. This can be enabled
by adding the GCE IAM role: CustomComputeImagePrune
Signed-off-by: Chris Evich <cevich@redhat.com>
Fix Docker CLI compatibility issue: the "--healthcheck-command" option
value should not be split but instead be passed as single string to
"CMD-SHELL", i.e. "/bin/sh -c <opt>".
On the other hand implement the same extension as is already available
for "--entrypoint", i.e. allow the option value to be a JSON array of
strings. This will make life easier for tools like podman-compose.
Updated "--healthcheck-command" option values in tests accordingly.
Continuation of #3455 & #3507
Signed-off-by: Stefan Becker <chemobejk@gmail.com>
do not automatically enable the controllers for the last path
component. It is necessary as once there are enabled controllers in a
cgroup, it won't possible to add processes to it.
Fix conmon being moved to the correct cgroup path when using
--cgroup-manager cgroupfs.
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
when the container is running in a user namespace, check if gid=5 is
available, otherwise drop the option gid=5 for /dev/pts.
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
This flag passes the host environment into the container. The basic idea is to
leak all environment variables from the host into the container.
Environment variables from the image, and passed in via --env and --env-file
will override the host environment.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
be sure to load all the existing handlers, so that they can also be
freed in addition to the handlers we treat differently.
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
Using pod removal worked, but container removal was missing the
most critical step - the actual removal. Must have been
accidentally removed during a refactor.
Fixes#3556
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
This adds three tests for the --ignore-rootfs option to verify that it
works in all combination.
1. Not used at all
2. Only used during restore
3. Only used during checkpoint
Signed-off-by: Adrian Reber <areber@redhat.com>
The newly added functionality to include the container's root
file-system changes into the checkpoint archive can now be explicitly
disabled. Either during checkpoint or during restore.
If a container changes a lot of files during its runtime it might be
more effective to migrated the root file-system changes in some other
way and to not needlessly increase the size of the checkpoint archive.
If a checkpoint archive does not contain the root file-system changes
information it will automatically be skipped. If the root file-system
changes are part of the checkpoint archive it is also possible to tell
Podman to ignore these changes.
Signed-off-by: Adrian Reber <areber@redhat.com>
One of the last limitations when migrating a container using Podman's
'podman container checkpoint --export=/path/to/archive.tar.gz' was
that it was necessary to manually handle changes to the container's root
file-system. The recommendation was to mount everything as --tmpfs where
the root file-system was changed.
This extends the checkpoint export functionality to also include all
changes to the root file-system in the checkpoint archive. The
checkpoint archive now includes a tarstream of the result from 'podman
diff'. This tarstream will be applied to the restored container before
restoring the container.
With this any container can now be migrated, even it there are changes
to the root file-system.
There was some discussion before implementing this to base the root
file-system migration on 'podman commit', but it seemed wrong to do
a 'podman commit' before the migration as that would change the parent
layer the restored container is referencing. Probably not really a
problem, but it would have meant that a migrated container will always
reference another storage top layer than it used to reference during
initial creation.
Signed-off-by: Adrian Reber <areber@redhat.com>
The newly added function GetDiffTarStream() mirrors the GetDiff()
function. It tries to get the correct layer ID from getLayerID()
and it filters out containerMounts from the tarstream. Thus the
behavior is the same as GetDiff(), but it returns a tarstream.
This also adds the function ApplyDiffTarStream() to apply the tarstream
generated by GetDiffTarStream().
These functions are targeted to support container migration with
root file-system changes.
Signed-off-by: Adrian Reber <areber@redhat.com>
During 'podman container checkpoint' the finished time was not set. This
resulted in a strange container status after checkpointing:
Exited (0) 292 years ago
During checkpointing FinishedTime is now set to time.now().
Signed-off-by: Adrian Reber <areber@redhat.com>
