While looking into `docker stats <c1> <c2> ...` I noticed that
the error output is quite long, especially if there are multiple errors:
```sh
ubuntu@ubuntu:~/docker$ docker stats nofound
: Error response from daemon: No such container: nofound
ubuntu@ubuntu:~/docker$ docker stats nofound foo bar
: Error response from daemon: No such container: nofound, : Error response from daemon: No such container: foo, : Error response from daemon: No such container: bar
```
There are several issues,
1. There is an extra `: ` at the beginning. That is because if container is not found,
the name will not be available from the daemon.
2. Multiple errors are concatenated with `, ` which will be quite long.
This fix:
1. Only prient out the error from daemon.
2. Multiple errors are printed out line by line.
Below is the new output:
```sh
ubuntu@ubuntu:~/docker$ docker stats nofound
Error response from daemon: No such container: nofound
ubuntu@ubuntu:~/docker$ docker stats nofound foo bar
Error response from daemon: No such container: nofound
Error response from daemon: No such container: foo
Error response from daemon: No such container: bar
```
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
check to see if the node is part of a swarm, and if so, if it is unlocked first.
If neither of these are true, abort the command.
Signed-off-by: Ying Li <ying.li@docker.com>
the "docker swarm leave" command description
mentioned that the command can only be used
for workers, however, the command can also
be used for managers (using the `-f` / `--force`
option).
this patch removes the "(workers only)" part
of the command description.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
The top-level `docker inspect` command could return
an error if the nodes Swarm certificates were expired.
In situations where the user did not explicitly
ask for an object-type (`--type=foo`), we should
ignore these errors, and consider them equal to
"node is not a swarm manager".
This change makes `docker inspect` ignore these
errors if no type was specified.
As a further optimization, the "swarm status"
result is now stored in a variable, so that
other swarm-specific API calls can be skipped.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This fix tries to address the issue raised in 28581 and 28927
where it is not possible to create a secret from a file (only
through STDIN).
This fix add a flag `--file` to `docker secret create` so that
it is possible to create a secret from a file with:
```
docker secret create --file secret.in secret.name
```
or
```
echo TEST | docker secret create --file - secret.name
```
Related docs has been updated.
An integration test has been added to cover the changes.
This fix fixes 28581.
This fix is related to 28927.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
This fix tries to address the issue raised in 24352. Previously,
when `docker swarm update` has no flags, the output is
```
Swarm updated.
```
even though nothing was updated. This could be misleading for
users.
This fix tries to address the issue by adding a `PreRunE` function
in the command so that in case no flag is provided (`cmd.Flags().NFlag() == 0`),
the usage will be outputed instead.
An integration has been added to cover the changes.
This fix fixes 24352.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
`--publish-add 8081:81 --publish-add 8082:82 --publish-rm 80
--publish-rm 81/tcp --publish-rm 82/tcp` would thus result in 81 and
82 to be published.
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
This reverts 26103. 26103 was trying to make it so that if someone did:
docker build --build-arg FOO .
and FOO wasn't set as an env var then it would pick-up FOO from the
Dockerfile's ARG cmd. However, it went too far and removed the ability
to specify a build arg w/o any value. Meaning it required the --build-arg
param to always be in the form "name=value", and not just "name".
This PR does the right fix - it allows just "name" and it'll grab the value
from the env vars if set. If "name" isn't set in the env then it still needs
to send "name" to the server so that a warning can be printed about an
unused --build-arg. And this is why buildArgs in the options is now a
*string instead of just a string - 'nil' == mentioned but no value.
Closes#29084
Signed-off-by: Doug Davis <dug@us.ibm.com>
- Display the ID column
- Do not append the task ID in the name column
- (NEW): Truncate task IDs, unless --no-trunc is specified
Signed-off-by: Andrea Luzzardi <aluzzardi@gmail.com>
This removes some very old vestigial code that really should have been
removed during the content addressability transition. It implements
something called "reference" but it behaves differently from the actual
reference package. This was only used by client-side content trust code,
and is relatively easy to extricate.
Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
This fix tries to address the issue in 28884 where
it is possible to mask the secret ID by name.
The reason was that searching a secret is based on name.
However, searching a secret should be done based on:
- Full ID
- Full Name
- Partial ID (prefix)
This fix addresses the issue by changing related implementation
in `getCliRequestedSecretIDs()`
An integration test has been added to cover the changes.
This fix fixes 28884
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
This fix convert DanglingOnly in ImagesPruneConfig to Filters,
so that it is possible to maintain API compatibility in the future.
Several integration tests have been added to cover changes.
This fix is related to 28497.
A follow up to this PR will be done once this PR is merged.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
This fix tries to address the enhancement proposed in 28708 to display
ID field for the output of `docker plugin ls`.
This fix add `ID` field to the output of `docker plugin ls`
Related docs has been updated.
This fix fixes 28708.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
This fix tries to address the proposal raised in 28946
to support plugins in `docker inspect`.
The command `docker inspect` already supports
"container", "image", "node", "network", "service", "volume", "task".
However, `--type plugin` is not supported yet at the moment.
This fix address this issue by adding the support of `--type plugin`
for `docker inspect`.
An additional integration test has been added to cover the changes.
This fix fixes 28946.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
Currently `--publish-rm` only accepts `<TargetPort>` or `<TargetPort>[/Protocol]`
though there are some confusions.
Since `--publish-add` accepts `<PublishedPort>:<TargetPort>[/Protocol]`, some user
may provide `--publish-rm 80:80`. However, there is no error checking so the incorrect
provided argument is ignored silently.
This fix adds the check to make sure `--publish-rm` only accepts `<TargetPort>[/Protocol]`
and returns error if the format is invalid.
The `--publish-rm` itself may needs to be revisited to have a better UI/UX experience,
see discussions on:
https://github.com/docker/swarmkit/issues/1396https://github.com/docker/docker/issues/25200#issuecomment-236213242https://github.com/docker/docker/issues/25338#issuecomment-240787002
This fix is short term measure so that end users are not misled by the silently ignored error
of `--publish-rm`.
This fix is related to (but is not a complete fix):
https://github.com/docker/swarmkit/issues/1396
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
When UpdateStatus was not present, the empty values of the timestamps
would be present:
"UpdateStatus": {
"StartedAt": "0001-01-01T00:00:00Z",
"CompletedAt": "0001-01-01T00:00:00Z"
}
To fix this, make the timestamps pointers, so they can be set to nil
when they should not be shown.
Also make UpdateStatus itself a pointer, so an empty object does not
show up when there is no UpdateStatus.
Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
This fix tries to address the issue raised in discussion of
PR 28735 where it was not possible to manage plugin based on
plugin ID. Previously it was not possible to invoke
`docker plugin inspect` with a plugin ID (or ID prefix).
This fix updates the implementation of `docker plugin inspect`
so that it is possbile to search based on a plugin name, or a
plugin ID. A short format of plugin ID (prefix) is also possible,
as long as there is no ambiguity.
Previously the check of `docker plugin inspect` was mostly done
on the client side. This could potentially cause inconsistency
between API and CMD. This fix move all the checks to daemon side
so that API and CMD will be consistent.
An integration test has been added to cover the changes.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
Currently the help output of `docker network ls --filter` is:
```
Options:
-f, --filter value Provide filter values (i.e. 'dangling=true') (default [])
...
```
This caused confusion as only the following filters are supported at the moment:
- `driver`
- `type`
- `name`
- `id`
- `label`
This fix update the help output of `docker network ls --filter` and `network_ls.md`.
The `dangling=true` description has been replace to:
```
Options:
-f, --filter filter Provide filter values (i.e. 'driver=bridge')
...
```
This fix fixes 28786.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
This updates secret inspect to support inspect by ID in addition to name
as well as inspecting multiple secrets. This also cleans up the
help text for consistency.
Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>
For previous versions of Docker, `--rm` was handled client side, as such
there was no support in the daemon for it.
Now it is handled daemon side, but we still need to handle the case of a
newer client talking to an older daemon.
Falls back to client-side removal when the daemon does not support it.
Signed-off-by: Brian Goff <cpuguy83@gmail.com>
network is `nil` if the following case:
```
services:
foo:
image: nginx
networks:
mynetwork:
```
It's a valid compose so we should not panic.
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
the service definition uses the format as defined
in http://man7.org/linux/man-pages/man5/hosts.5.html
(IP_address canonical_hostname [aliases...])
This format is the _reverse_ of the format used in
the container API.
Commit f32869d956eb175f88fd0b16992d2377d8eae79c
inadvertently used the incorrect order.
This fixes the order, and correctly sets it to;
IP-Address hostname
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Modify the service update and create APIs to return optional warning
messages as part of the response. Populate these messages with an
informative reason when digest resolution fails.
This is a small API change, but significantly improves the UX. The user
can now get immediate feedback when they've specified a nonexistent
image or unreachable registry.
Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>
use secret store interface instead of embedded secret data into container
Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>
For some reason, `go vet` and `go fmt` validate does not capture
several issues.
The following was the output of `go vet`:
```
ubuntu@ubuntu:~/docker$ go vet ./... 2>&1 | grep -v ^vendor | grep -v '^exit status 1$'
cli/command/formatter/container_test.go:393: possible formatting directive in Log call
volume/volume_test.go:257: arg mp.RW for printf verb %s of wrong type: bool
```
The following was the output of `go fmt -s`:
```
ubuntu@ubuntu:~/docker$ gofmt -s -l . | grep -v ^vendor
cli/command/stack/list.go
daemon/commit.go
```
Fixed above issues with `go vet` and `go fmt -s`
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
This fix tries to fix the crash caused by `docker service inspect --pretty`,
by performing necessary nil pointer check.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
This fix is an attempt to address the issue raised in 28339. In
`docker ps`, the formatter needs to expose all fields of `types.Container`
to `preProcessor` so that template could be executed.
This direct exposing is unreliable and could cause issues as user may incorrectly
assume all fields in `types.Container` will be available for templating.
However, the purpose of `preProcessor` is to only find out if `.Size`
is defined (so that opts.size could be set accordingly).
This fix defines `preProcessor` as `map[string]bool` with a func `Size()`.
In this way, any unknown fields will be ignored.
This fix adds several test cases to the existing `TestBuildContainerListOptions`.
This fix fixes 28339.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
A recent PR added `(ns|us|ms|s|m|h)` to the descriptions of some
duration options, but not all. Add it to the remaining options for
consistency.
Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
As is specified in 28018, it would be useful to know the manager's addresses
even in a worker node. This is especially useful when there are many
worker nodes in a big cluster.
The information is available in `info.Swarm.RemoteManagers`.
This fix add the information of `Manager Addresses` to the output
of `docker info`, to explicitly show it.
A test has been added for this fix.
This fix fixes 28018.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
… for `docker images`.
This deprecates the `filter` param for the `/images` endpoint and make a
new filter called `reference` to replace it. It does change the CLI
side (still possible to do `docker images busybox:musl`) but changes the
cli code to use the filter instead (so that `docker images --filter
busybox:musl` and `docker images busybox:musl` act the same).
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
This change incorporates feedback from @thaJeztah in the PR that added
the autolock flag. It changes the descriptions to be different for
"swarm init" and "swarm update" so that the boolean nature so that the
purpose of the flag in both contexts is clearer.
Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
This fix tries to address 27902 by adding a flag `--host`
to `docker service create` and `--host-add/--host-rm` to
`docker service update`, so that it is possible to
specify extra `host:ip` settings in `/etc/hosts`.
This fix adds `Hosts` in swarmkit's `ContainerSpec` so that it
is possible to specify extra hosts during service creation.
Related docs has been updated.
An integration test has been added.
This fix fixes 27902.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
- Neither swarm init or swarm update should take an unlock key
- Add an autolock flag to turn on autolock
- Make the necessary docker api changes
- Add SwarmGetUnlockKey API call and use it when turning on autolock
- Add swarm unlock-key subcommand
Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
This fix is a follow up to #27567 based on:
https://github.com/docker/docker/pull/27567#issuecomment-259295055
In #27567, `--dns-options` has been added to `service create/update`,
together with `--dns` and `--dns-search`. The `--dns-opt` was used
in `docker run`.
This fix add `--dns-option` (not `--dns-options`) to `docker run/create`, and hide
`--dns-opt`. It is still possible to use `--dns-opt` with
`docker run/create`, though it will not show up in help output.
This fix change `--dns-options`to --dns-option` for `docker service create`
and `docker service update`.
This fix also updates the docs and bash/zsh completion scripts.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
- use Filters instead of Filter for secret list
- UID, GID -> string
- getSecrets -> getSecretsByName
- updated test case for secrets with better source
- use golang.org/x/context instead of context
- for grpc conversion allocate with make
- check for nil with task.Spec.GetContainer()
Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>
- use /secrets for swarm secret create route
- do not specify omitempty for secret and secret reference
- simplify lookup for secret ids
- do not use pointer for secret grpc conversion
Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>
- fix lint issues
- use errors pkg for wrapping errors
- cleanup on error when setting up secrets mount
- fix erroneous import
- remove unneeded switch for secret reference mode
- return single mount for secrets instead of slice
Signed-off-by: Evan Hazlett <ejhazlett@gmail.com>
This fix is based on the comment:
https://github.com/docker/docker/pull/28147#discussion_r86996347
Previously the output string of the `DurationOpt` is `duration-ptr`
and `Uint64Opt` is `uint64-ptr`. While it is clear to developers,
for a normal user `-ptr` might not be very informative.
On the other hand, the default value of `DurationOpt` and `Uint64Opt`
has already been quite informative: `none`. That means if no flag
provided, the value will be treated as none.
(like a ptr with nil as the default)
For that reason this fix removes the `-ptr`.
Also, the output in the docs of `service create` has been quite
out-of-sync with the true output. So this fix updates the docs
to have the most up-to-date help output of `service create --help`.
This fix is related to #28147.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
- Refactored to move resolution code into the idresolver
- Made `ps` output more bearable by shortening service IDs in task names
Signed-off-by: Andrea Luzzardi <aluzzardi@gmail.com>
This fix adds `--dns-add`, `--dns-rm`, `--dns-opt-add`, `--dns-opt-rm`,
`--dns-search-add` and `--dns-search-rm` to `service update`.
An integration test and a unit test have been added to cover the changes in this fix.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
This fix tries to fix the issue raised in 24391 about allowing
custom DNS settings to service definition.
This fix adds `DNSConfig` (`Nameservers`, `Options`, `Search`) to
service definition, as well as `--dns`, `--dns-opt`, and `dns-search`
to `service create`.
An integration test has been added to cover the changes in this fix.
This fix fixes 24391.
A PR in swarmkit will be created separately.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
Add the following options to "swarm init" and "swarm update":
- --max-snapshots: Retain this many old Raft snapshots in addition
to the latest one
- --snapshot-interval: Number of log entries between Raft snapshots
These options already existed in SwarmKit and the Docker API but were
never exposed in the CLI. I'm adding them here to fix this oversight.
--max-snapshots may be useful for debugging purposes and more
conservative users who want to store rolling backups of old versions of
the Raft state.
--snapshot-interval is most useful for performance tuning. The default
value of 10000 may not be ideal for some setups.
There is also a LogEntriesForSlowFollowers option that is not exposed. I
decided not to expose it along with these others because I don't think
it's generally useful (and I'm not sure what I would call the CLI flag).
But if people want, I can expose it for the sake of completeness.
Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
This fix is based on the comment in
https://github.com/docker/docker/pull/27567#discussion_r86910604
Basically, in the help output of `docker service update`, the `--xxx-add`
flags typically have plural forms while `--xxx-rm` flags have singular
forms.
This fix updates the help output for consistency.
This fix also updates the related docs in `service_update.md`.
The help output in `service_update.md` has been quite out-of-sync
with the actual output so this fix replaces the output with the
most up-to-date output.
This fix is related to #27567.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
Signed-off-by: Victor Vieux <vieux@docker.com>
update cobra and use Tags
Signed-off-by: Victor Vieux <vieux@docker.com>
allow client to talk to an older server
Signed-off-by: Victor Vieux <vieux@docker.com>
This fix tries to add `--tty` to `docker service create/update`. As was
specified in 25644, `TTY` flag has been added to SwarmKit and is
already vendored.
This fix add `--tty` to `docker service create/update`.
Related document has been updated.
Additional integration tests has been added.
This fix fixes 25644.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
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>
The short description should be kept short. Spanning on several lines is
a bit ugly. A user can still get more information in the manual or we
can expand the long description instead if we want (there is currently
none).
This reverts a bit of #26683.
Signed-off-by: Vincent Bernat <vincent@bernat.im>
Manager now auto-detects the address that an agent connects to the cluster
from and stores it. This is useful for many kinds of internal cluster
management tools.
Signed-off-by: Drew Erny <drew.erny@docker.com>
This adds support to display names or id of container instead of what
was provided in the request.
This keeps the default behavior (`docker stats byname` will display
`byname` in the `CONTAINER` colmun and `docker stats byid` will display
the id in the `CONTAINER` column) but adds two new format directive.
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
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>
These features were originally scheduled
for removal in docker 1.13, but we changed
our deprecation policy to keep features
for three releases instead of two.
This updates the deprecation version
to match the deprecation policy.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
In file `api/types/client.go`, some of the "*Options{}" structs own a
`Filters` field while some else have the name of `Filter`, this commit
will rename all `Filter` to `Filters` for consistency. Also `Filters`
is consistent with API with format `/xxx?filters=xxx`, that's why
`Filters` is the right name.
Signed-off-by: Zhang Wei <zhangwei555@huawei.com>
To load an image from a tar file, you can specify
the tar file in the -i/--input option:
docker load -i image_1.tar
or using stdin:
docker load < image_1.tar
cat image_1.tat | docker load
If the image file isn't given the `docker load`
command gets stuck.
To avoid that, the load makes sure the CLI input is
not a terminal or the `--input` option was set.
If not then an error message is shown.
Signed-off-by: Boaz Shuster <ripcurld.github@gmail.com>
--group-add was used for specifying groups for both service create
and service update. For create it was confusing since we don't have
an existing set of groups. Instead I added --group to create, and
moved --group-add to service update only, like --group-rm
This deals with issue 27646
Signed-off-by: Lily Guo <lily.guo@docker.com>
Update flag documentation
Specify that --group, --group-add and --groupd-rm refers to
supplementary user groups
Signed-off-by: Lily Guo <lily.guo@docker.com>
Fix docs for groups and update completion scripts
Signed-off-by: Lily Guo <lily.guo@docker.com>
As for `ps`, `images`, `network ls` and `volume ls`, this makes it
possible to define a custom default format.
Signed-off-by: Vincent Demeester <vincent@sbr.pm>
A HealthConfig entry was added to the ContainerSpec associated with the
service being created or updated.
Signed-off-by: Cezar Sa Espinola <cezarsa@gmail.com>
This fix tries to address the issue in 24712 and add
`--env-file` file to `docker create service`.
Related documentation has been updated.
An additional integration has been added.
This fix fixes 24712.
Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
The --name flag was inadvertently added to
docker service update, but is not supported,
as it has various side-effects (e.g., existing
tasks are not renamed).
This removes the flag from the service update
command.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
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>
`docker network prune` prunes unused networks, including overlay ones.
`docker system prune` also prunes unused networks.
Signed-off-by: Akihiro Suda <suda.akihiro@lab.ntt.co.jp>
Currently, there's no way to restart the tasks of a service without
making an actual change to the service. This leads to us giving awkward
workarounds as in
https://github.com/docker/docker.github.io/pull/178/files, where we tell
people to scale a service up and down to restore balance, or make
unnecessary changes to trigger a restart.
This change adds a --force option to "docker service update", which
forces the service to be updated even if no changes require that.
Since rolling update parameters are respected, the user can use
"docker service --force" to do a rolling restart. For example, the
following is supported:
docker service update --force --update-parallelism 2 \
--update-delay 5s myservice
Since the default value of --update-parallelism is 1, the default
behavior is to restart the service one task at a time.
Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
Passing {{.Networks}} to the format parameter will prompt ps to
display all the networks the container is connected to.
Signed-off-by: Kenfe-Mickael Laventure <mickael.laventure@gmail.com>
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>
This adds support for two enhancements to swarm service rolling updates:
- Failure thresholds: In Docker 1.12, a service update could be set up
to either pause or continue after a single failure occurs. This adds
an --update-max-failure-ratio flag that controls how many tasks need to
fail to update for the update as a whole to be considered a failure. A
counterpart flag, --update-monitor, controls how long to monitor each
task for a failure after starting it during the update.
- Rollback flag: service update --rollback reverts the service to its
previous version. If a service update encounters task failures, or
fails to function properly for some other reason, the user can roll back
the update.
SwarmKit also has the ability to roll back updates automatically after
hitting the failure thresholds, but we've decided not to expose this in
the Docker API/CLI for now, favoring a workflow where the decision to
roll back is always made by an admin. Depending on user feedback, we may
add a "rollback" option to --update-failure-action in the future.
Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>