This fix tries to address the proposal raised in 27921 and add
`--cpus` flag for `docker run/create`.
Basically, `--cpus` will allow user to specify a number (possibly partial)
about how many CPUs the container will use. For example, on a 2-CPU system
`--cpus 1.5` means the container will take 75% (1.5/2) of the CPU share.
This fix adds a `NanoCPUs` field to `HostConfig` since swarmkit alreay
have a concept of NanoCPUs for tasks. The `--cpus` flag will translate
the number into reused `NanoCPUs` to be consistent.
This fix adds integration tests to cover the changes.
Related docs (`docker run` and Remote APIs) have been updated.
This fix fixes 27921.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
Upstream-commit: 846baf1fd3efcbfbf9d3eb99e436ca9a59d3e185
Component: engine
Allow built images to be squash to scratch.
Squashing does not destroy any images or layers, and preserves the
build cache.
Introduce a new CLI argument --squash to docker build
Introduce a new param to the build API endpoint `squash`
Once the build is complete, docker creates a new image loading the diffs
from each layer into a single new layer and references all the parent's
layers.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
Upstream-commit: 362369b4bbea38881402d281ee2015d16e8b10ce
Component: engine
containers may specify these cgroup values at runtime. This will allow
processes to change their priority to real-time within the container
when CONFIG_RT_GROUP_SCHED is enabled in the kernel. See #22380.
Also added sanity checks for the new --cpu-rt-runtime and --cpu-rt-period
flags to ensure that that the kernel supports these features and that
runtime is not greater than period.
Daemon will support a --cpu-rt-runtime flag to initialize the parent
cgroup on startup, this prevents the administrator from alotting runtime
to docker after each restart.
There are additional checks that could be added but maybe too far? Check
parent cgroups to ensure values are <= parent, inspecting rtprio ulimit
and issuing a warning.
Signed-off-by: Erik St. Martin <alakriti@gmail.com>
Upstream-commit: 56f77d5ade945b3b8816a6c8acb328b7c6dce9a7
Component: engine
Keeping the current behavior for exec, i.e., inheriting
variables from main process. New variables will be added
to current ones. If there's already a variable with that
name it will be overwritten.
Example of usage: docker exec -it -e TERM=vt100 <container> top
Closes#24355.
Signed-off-by: Jonh Wendell <jonh.wendell@redhat.com>
Upstream-commit: e03bf1221ee2c863f25a57af4d415e2d8ff4f26c
Component: engine
This fix tries to add a daemon config parameter `--shutdown-timeout`
that specifies the timeout value to stop containers gracefully
(before SIGKILL). The default value is 15s.
The `--shutdown-timeout` parameter is added to daemon options and
config file. It will also be updated during daemon reload.
Additional test cases have been added to cover the change.
This fix fixes#22471.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
Upstream-commit: d7be6b2debb653739a32cfcb7c333ca062f62be0
Component: engine
This fix tries to add a flag `--stop-timeout` to specify the timeout value
(in seconds) for the container to stop before SIGKILL is issued. If stop timeout
is not specified then the default timeout (10s) is used.
Additional test cases have been added to cover the change.
This fix is related to #22471. Another pull request will add `--shutdown-timeout`
to daemon for #22471.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
Upstream-commit: e66d2108911a2fad016205bdd6bf181f7e822c1c
Component: engine
When sending a build context to a remote server it may be
(significantly) advantageous to compress the build context. This commit
adds support for gz compression when constructing a build context
using a command like "docker build --compress ."
Signed-off-by: Paul Kehrer <paul.l.kehrer@gmail.com>
Upstream-commit: 4825e58a96188e6a9c739c31966c8ac5a2bbd1d7
Component: engine
This makes it easier to list containers that are part of a task
(swarm mode) and those who are not.
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
Upstream-commit: 5280ba83e55b94b9d4973a15381e18eb10920233
Component: engine
This option was added through commit
0d03c060c7e6800e60833c4462b917ee9b081440,
but didn't update the man page.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Upstream-commit: 41c6083c34969cf97b21e3cf2eed65d0fca91879
Component: engine
Allow passing --storage-opt size=X to docker create/run commands
for the `overlay2` graphriver.
The size option is only available if the backing fs is xfs that is
mounted with the `pquota` mount option.
The user can pass any size less then the backing fs size.
Signed-off-by: Amir Goldstein <amir73il@aquasec.com>
Upstream-commit: 05bac4591a4519fbac9d3724f3b708e882bbad80
Component: engine
This adds a small C binary for fighting zombies. It is mounted under
`/dev/init` and is prepended to the args specified by the user. You
enable it via a daemon flag, `dockerd --init`, as it is disable by
default for backwards compat.
You can also override the daemon option or specify this on a per
container basis with `docker run --init=true|false`.
You can test this by running a process like this as the pid 1 in a
container and see the extra zombie that appears in the container as it
is running.
```c
int main(int argc, char ** argv) {
pid_t pid = fork();
if (pid == 0) {
pid = fork();
if (pid == 0) {
exit(0);
}
sleep(3);
exit(0);
}
printf("got pid %d and exited\n", pid);
sleep(20);
}
```
Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
Upstream-commit: ee3ac3aa66bfb27b7c21dfb253fdaa113baedd4e
Component: engine
