This fix tries to address the issue raised in #23055.
Currently `docker search` result caps at 25 and there is
no way to allow getting more results (if exist).
This fix adds the flag `--limit` so that it is possible
to return more results from the `docker search`.
Related documentation has been updated.
Additional tests have been added to cover the changes.
This fix fixes#23055.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
This PR adds support for user-defined health-check probes for Docker
containers. It adds a `HEALTHCHECK` instruction to the Dockerfile syntax plus
some corresponding "docker run" options. It can be used with a restart policy
to automatically restart a container if the check fails.
The `HEALTHCHECK` instruction has two forms:
* `HEALTHCHECK [OPTIONS] CMD command` (check container health by running a command inside the container)
* `HEALTHCHECK NONE` (disable any healthcheck inherited from the base image)
The `HEALTHCHECK` instruction tells Docker how to test a container to check that
it is still working. This can detect cases such as a web server that is stuck in
an infinite loop and unable to handle new connections, even though the server
process is still running.
When a container has a healthcheck specified, it has a _health status_ in
addition to its normal status. This status is initially `starting`. Whenever a
health check passes, it becomes `healthy` (whatever state it was previously in).
After a certain number of consecutive failures, it becomes `unhealthy`.
The options that can appear before `CMD` are:
* `--interval=DURATION` (default: `30s`)
* `--timeout=DURATION` (default: `30s`)
* `--retries=N` (default: `1`)
The health check will first run **interval** seconds after the container is
started, and then again **interval** seconds after each previous check completes.
If a single run of the check takes longer than **timeout** seconds then the check
is considered to have failed.
It takes **retries** consecutive failures of the health check for the container
to be considered `unhealthy`.
There can only be one `HEALTHCHECK` instruction in a Dockerfile. If you list
more than one then only the last `HEALTHCHECK` will take effect.
The command after the `CMD` keyword can be either a shell command (e.g. `HEALTHCHECK
CMD /bin/check-running`) or an _exec_ array (as with other Dockerfile commands;
see e.g. `ENTRYPOINT` for details).
The command's exit status indicates the health status of the container.
The possible values are:
- 0: success - the container is healthy and ready for use
- 1: unhealthy - the container is not working correctly
- 2: starting - the container is not ready for use yet, but is working correctly
If the probe returns 2 ("starting") when the container has already moved out of the
"starting" state then it is treated as "unhealthy" instead.
For example, to check every five minutes or so that a web-server is able to
serve the site's main page within three seconds:
HEALTHCHECK --interval=5m --timeout=3s \
CMD curl -f http://localhost/ || exit 1
To help debug failing probes, any output text (UTF-8 encoded) that the command writes
on stdout or stderr will be stored in the health status and can be queried with
`docker inspect`. Such output should be kept short (only the first 4096 bytes
are stored currently).
When the health status of a container changes, a `health_status` event is
generated with the new status. The health status is also displayed in the
`docker ps` output.
Signed-off-by: Thomas Leonard <thomas.leonard@docker.com>
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
The -f flag on docker tag has been deprecated in docker 1.10 and
is expected to be removed in docker 1.12.
This fix removed the -f flag on docker tag and also updated
deprecated.md.
NOTE: A separate pull request for engine-api has been opened to
cover the related changes.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
Since 1.9, the following short variant options have been
deprecated in favor of their long variants:
`docker run -c (--cpu-shares)`
`docker build -c (--cpu-shares)`
`docker create -c (--cpu-shares)`
`docker update -c (--cpu-shares)`
However, `-c` is still widely used and is considered as
a convenient option for swarm (see #16271).
This fix undeprecated the command line short
variant options of `-c` and updated the deprecated.md.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
… and refactor a little bit some daemon on the way.
- Move `SearchRegistryForImages` to a new file (`daemon/search.go`) as
`daemon.go` is getting pretty big.
- `registry.Service` is now an interface (allowing us to decouple it a
little bit and thus unit test easily).
- Add some unit test for `SearchRegistryForImages`.
- Use UniqueExactMatch for search filters
- And use empty restore id for now in client.ContainerStart.
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
Make better default usage on context.Context on the `api/client` package
to share the context (it is useless if not shared, which was the case
for a lot of commands).
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
The filtering is made server-side, and the following filters are
supported:
* is-official (boolean)
* is-automated (boolean)
* has-stars (integer)
Signed-off-by: Fabrizio Soppelsa <fsoppelsa@mirantis.com>
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
Since 1.9, Docker Content Trust Offline key has been renamed to
Root key and the Tagging key has been renamed to Repository key.
The corresponding environment variables
`DOCKER_CONTENT_TRUST_OFFLINE_PASSPHRASE`
`DOCKER_CONTENT_TRUST_TAGGING_PASSPHRASE`
have also been deprecated and renamed to
`DOCKER_CONTENT_TRUST_ROOT_PASSPHRASE`
`DOCKER_CONTENT_TRUST_REPOSITORY_PASSPHRASE`
This fix removed the deprecated ENV passphrase variables for
1.12 and updated the docs.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
The jsonlog logger currently allows specifying envs and labels that
should be propagated to the log message, however there has been no way
to read that back.
This adds a new API option to enable inserting these attrs back to the
log reader.
With timestamps, this looks like so:
```
92016-04-08T15:28:09.835913720Z foo=bar,hello=world hello
```
The extra attrs are comma separated before the log message but after
timestamps.
Without timestaps it looks like so:
```
foo=bar,hello=world hello
```
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
- Update now returns only an error
- NewNotaryRepository now takes a trustpinning configuration - we will provide an empty one for now.
Signed-off-by: cyli <cyli@twistedmatrix.com>
before:
```
$ time docker --help
real 0m0.177s
user 0m0.000s
sys 0m0.040s
```
after:
```
$ time docker --help
real 0m0.010s
user 0m0.000s
sys 0m0.000s
```
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
When exec a non-exist command, it should print a newline at last.
Currently:
```
$ docker exec -ti f5f703ea2c0a144 bash
rpc error: code = 2 desc = "oci runtime error: exec failed: exec:
\"bash\": executable file not found in $PATH"$
```
Signed-off-by: Feng Yan <fy2462@gmail.com>
This functionality has been fixed by
7bca932182 but then it has been broken
again by a793564b25 and finally refixed
here.
Basically the functionality was to prompt for login when trying to pull
from the official docker hub.
Signed-off-by: Antonio Murdaca <runcom@redhat.com>
Using new methods from engine-api, that make it clearer which element is
required when consuming the API.
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
This change allow to filter events that happened in the past
without waiting for future events. Example:
docker events --since -1h --until -30m
Signed-off-by: David Calavera <david.calavera@gmail.com>
