Add an UntagImage() method to pkg/storage/ImageServer, which will check
if the passed-in NameOrID is a name. If so, it merely removes that name
from the image, removing the image only if it was the last name that the
image had. If the NameOrID is an image ID, the image is removed, as
RemoveImage() does.
Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
The image's canonical reference is a name with a digest of the image's
manifest, so in imageService.ImageStatus() and
imageService.ListImages(), divide the image's name list into tagged and
digested values, and if we have names, add canonical versions.
In Server.ContainerStatus(), return the image name as it was given to us
as the image, and the image digested reference as the image reference.
In Server.ListImages(), be sure to only return tagged names in the
RepoTags field. In Server.ImageStatus(), also return canonical
references in the RepoDigests field.
In Server.PullImage(), be sure that we consistently return the same
image reference for an image, whether we ended up pulling it or not.
Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
github.com/containers/image/types.ImageReference.NewImage() can take a
*github.com/containers/image/types.SystemContext now, so pass it one if
pkg/storage/imageService.CanPull() has one to give it.
Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
Add an UntagImage() method to pkg/storage/ImageServer, which will check
if the passed-in NameOrID is a name. If so, it merely removes that name
from the image, removing the image only if it was the last name that the
image had. If the NameOrID is an image ID, the image is removed, as
RemoveImage() does.
Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
The image's canonical reference is a name with a digest of the image's
manifest, so compute and return that value as the image's reference in
ImageStatus() and in ContainerStatus().
We don't auto-store a name based on the image digest when we pull one by
tag, but then CRI doesn't need us to do that.
Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
We add a ContainerVolume struct and store a list of volumes
in the Container object for quick retrieval.
Signed-off-by: Mrunal Patel <mrunalp@gmail.com>
We calculate these values at container creation time and store
them in the container object as they are requested during container
status. This avoids re-calculation and speeds up container status.
Signed-off-by: Mrunal Patel <mrunalp@gmail.com>
Need to mv to latest released and supported version of logrus
switch github.com/Sirupsen/logrus github.com/sirupsen/logrus
Also vendor in latest containers/storage and containers/image
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
The storage library uses github.com/pkg/errors to wrap errors that it
returns from many of its functions, so when passing them to
os.IsNotExist() or comparing them to specific errors defined in the
storage library, unwrap them using errors.Cause().
Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
github.com/containers/image.FromUnparsedImage() "takes ownership" of the
UnparsedImage that we pass to it, so we shouldn't also Close() the
UnparsedImage ourselves after we've wrapped it up in an Image object.
Since creating an Image is the only thing we do with the UnparsedImage
after creating it from a SourceImage, just use the FromSource() function
to handle both steps at once.
Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
Container runtimes provide different levels of isolation, from kernel
namespaces to hardware virtualization. When starting a specific
container, one may want to decide which level of isolation to use
depending on how much we trust the container workload. Fully verified
and signed containers may not need the hardware isolation layer but e.g.
CI jobs pulling packages from many untrusted sources should probably not
run only on a kernel namespace isolation layer.
Here we allow CRI-O users to define a container runtime for trusted
containers and another one for untrusted containers, and also to define
a general, default trust level. This anticipates future kubelet
implementations that would be able to tag containers as trusted or
untrusted. When missing a kubelet hint, containers are trusted by
default.
A container becomes untrusted if we get a hint in that direction from
kubelet or if the default trust level is set to "untrusted" and the
container is not privileged. In both cases CRI-O will try to use the
untrusted container runtime. For any other cases, it will switch to the
trusted one.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
We use a SOCK_SEQPACKET socket for the attach unix domain socket, which
means the kernel will ensure that the reading side only ever get the
data from one write operation. We use this for frameing, where the
first byte is the pipe that the next bytes are for. We have to make sure
that all reads from the socket are using at least the same size of buffer
as the write side, because otherwise the extra data in the message
will be dropped.
This also adds a stdin pipe for the container, similar to the ones we
use for stdout/err, because we need a way for an attached client
to write to stdin, even if not using a tty.
This fixes https://github.com/kubernetes-incubator/cri-o/issues/569
Signed-off-by: Alexander Larsson <alexl@redhat.com>
By only handling create events, we are breaking plugins that don't
create and write atomically, like weave for example.
The Weave plugin creates the file first and later write to it. We are
missing the second part and never see the final CNI config file.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This is an optimization of our image pull code path. It's basically
how docker handles pulls as well. Let's be smart and check the image in
pull code path as well.
This also matches docker behavior which first checks whether we're
allowed to actually pull an image before looking into local storage.
Signed-off-by: Antonio Murdaca <runcom@redhat.com>
Some runtimes like Clear Containers need to interpret the CRI-O
annotations, to distinguish the infra container from the regular one.
Here we export those annotations and use a more standard dotted
namespace for them.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The ocid project was renamed to CRI-O, months ago, it is time that we moved
all of the code to the new name. We want to elminate the name ocid from use.
Move fully to crio.
Also cric is being renamed to crioctl for the time being.
Signed-off-by: Dan Walsh <dwalsh@redhat.com>
Remove some logic that messed with the names we assigned to just-pulled
images in the storage layer, since the image and storage libraries now
take care of that for us.
Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
If an image that we're pulling from a registry has a digest in its
reference, use that to construct the destination image's reference.
This should help us detect cases where the image has previously been
pulled.
When we have a filter to use when listing images, expand it into a
reference so that we can properly match against names of images that
we've previously stored using fully expanded references.
Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
`image` as a variable/field name becomes too redundant and difficult to
grep for. Switching to `imageServer` makes for more readable code.
Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>
We need to support cases where InitCNI() is called before
any CNI configuration files have been installed. This is
for example happening when deploying a k8s cluster with kubeadm.
kubeadm will start the DNS pod and it is left to the caller to
pick a network overlay and create the corresponding pods, that
will typically install a CNI configuration file first.
Here we address that issue by doing 2 things:
- Not returning an error when the default CNI config files
directory is empty.
- If it is empty, we start a monitoring thread (fsnotify based)
that will synchronize the network configuration when a CNI
file is installed there.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
To be consistent with the rest of the CRI-O logs, and to be able
to set the ocicni verbosity, we convert it from glog to logrus.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
When we pull an image, preserve the tag portion of the name that we were
asked to use for pulling it, instead of unconditionally replacing it
with "latest".
Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
When looking for the image to use for creating a container, there's no
need to attempt parsing the ID a second time, and doing so can create
confusing error messages.
Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
