A kernel may support any of these, but an admin may have unmounted
certain cgroups, so let's include that possibility in the error so
as to avoid users thinking they have a kernel issue.
Signed-off-by: Christy Perez <christy@linux.vnet.ibm.com>
This version introduces the following:
- uses nanosecond timestamps for event
- ensure events are sent once their effect is "live"
Signed-off-by: Kenfe-Mickael Laventure <mickael.laventure@gmail.com>
This adds an `--oom-score-adjust` flag to the daemon so that the value
provided can be set for the docker daemon's process. The default value
for the flag is -500. This will allow the docker daemon to have a
less chance of being killed before containers do. The default value for
processes is 0 with a min/max of -1000/1000.
-500 is a good middle ground because it is less than the default for
most processes and still not -1000 which basically means never kill this
process in an OOM condition on the host machine. The only processes on
my machine that have a score less than -500 are dbus at -900 and sshd
and xfce( my window manager ) at -1000. I don't think docker should be
set lower, by default, than dbus or sshd so that is why I chose -500.
Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
Now that Windows base images can be loaded directly into docker via "docker load" of a specialized tar file (with docker pull support on the horizon) we no longer have need of the custom images code path that loads images from a shared central location. Removing that code and it's call points.
Signed-off-by: Stefan J. Wernli <swernli@microsoft.com>
This also moves the variable holding the default runtime name from the
engine-api repository into docker repository
Signed-off-by: Kenfe-Mickael Laventure <mickael.laventure@gmail.com>
This fix tries to fix logrus formatting by adding `f` to the end of
`logrus.[Error|Warn|Debug|Fatal|Panic|Info](` when formatting string
is present but the function `logrus.[Error|Warn|Debug|Fatal|Panic|Info](`
is used (incorrectly).
This fix is related to #23459, and is a follow up of #23461.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
SELinux labeling should be disabled when using --privileged mode
/etc/hosts, /etc/resolv.conf, /etc/hostname should not be relabeled if they
are volume mounted into the container.
Signed-off-by: Dan Walsh <dwalsh@redhat.com>
Signed-off-by: Dan Walsh <dwalsh@redhat.com>
Containers using the host network stack (--net=host)
are not affected by "ip-forwarding" being disabled,
so there's not need to show a warning.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
There was an error in validation logic before, should use period
instead of quota, and also add check for negative
number here, if not with that, it would had cpu.cfs_period_us: invalid argument
which is not good for users.
Signed-off-by: Kai Qiang Wu(Kennan) <wkqwu@cn.ibm.com>
Running on kernel versions older than 3.10 has not been
supported for a while (as it's known to be unstable).
With the containerd integration, this has become more
apparent, because kernels < 3.4 don't support PR_SET_CHILD_SUBREAPER,
which is required for containerd-shim to run.
Change the previous "warning" to a "fatal" error, so
that we refuse to start.
There's still an escape-hatch for users by setting
"DOCKER_NOWARN_KERNEL_VERSION=1" so that they can
run "at their own risk".
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Kernel has no limit for memory reservation, but in different
kernel versions, the default behavior is different.
On kernel 3.13,
docker run --rm --memory-reservation 1k busybox cat /sys/fs/cgroup/memory/memory.soft_limit_in_bytes
the output would be 4096, but on kernel 4.1, the output is 0.
Since we have minimum limit for memory and kernel memory, we
can have this limit for memory reservation as well, to make
the behavior consistent.
Signed-off-by: Qiang Huang <h.huangqiang@huawei.com>
runc expects a systemd cgroupsPath to be in slice:scopePrefix:containerName
format and the "--systemd-cgroup" option to be set. Update docker accordingly.
Fixes 21475
Signed-off-by: Anusha Ragunathan <anusha@docker.com>
Now that the namespace sharing code via runc is vendored with the
containerd changes, we can disable the restrictions on container to
container net and IPC namespace sharing when the daemon has user
namespaces enabled.
Docker-DCO-1.1-Signed-off-by: Phil Estes <estesp@linux.vnet.ibm.com> (github: estesp)
All other options we have use `=` as separator, labels,
log configurations, graph configurations and so on.
We should be consistent and use `=` for the security
options too.
Signed-off-by: David Calavera <david.calavera@gmail.com>
This fixes problems encountered when running with a remapped root (the
syscalls related to the metadata directory will fail under user
namespaces). Using 0711 rather than 0701 (which solved the problem
previously) fixes the issue.
Signed-off-by: Aleksa Sarai <asarai@suse.de>
Following #19995 and #17409 this PR enables skipping userns re-mapping
when creating a container (or when executing a command). Thus, enabling
privileged containers running side by side with userns remapped
containers.
The feature is enabled by specifying ```--userns:host```, which will not
remapped the user if userns are applied. If this flag is not specified,
the existing behavior (which blocks specific privileged operation)
remains.
Signed-off-by: Liron Levin <liron@twistlock.com>
