Deprecated Engine Features
The following list of features are deprecated in Engine. To learn more about Docker Engine’s deprecation policy, see Feature Deprecation Policy.
Legacy “overlay” storage driver
Deprecated in Release: v18.09.0
The overlay
storage driver is deprecated in favor of the overlay2
storage
driver, which has all the benefits of overlay
, without its limitations (excessive
inode consumption). The legacy overlay
storage driver will be removed in a future
release. Users of the overlay
storage driver should migrate to the overlay2
storage driver.
The legacy overlay
storage driver allowed using overlayFS-backed filesystems
on pre 4.x kernels. Now that all supported distributions are able to run overlay2
(as they are either on kernel 4.x, or have support for multiple lowerdirs
backported), there is no reason to keep maintaining the overlay
storage driver.
device mapper storage driver
Deprecated in Release: v18.09.0
The devicemapper
storage driver is deprecated in favor of overlay2
, and will
be removed in a future release. Users of the devicemapper
storage driver are
recommended to migrate to a different storage driver, such as overlay2
, which
is now the default storage driver.
The devicemapper
storage driver facilitates running Docker on older (3.x) kernels
that have no support for other storage drivers (such as overlay2, or AUFS).
Now that support for overlay2
is added to all supported distros (as they are
either on kernel 4.x, or have support for multiple lowerdirs backported), there
is no reason to continue maintenance of the devicemapper
storage driver.
Reserved namespaces in engine labels
Deprecated in Release: v18.06.0
The namespaces com.docker.*
, io.docker.*
, and org.dockerproject.*
in engine labels
were always documented to be reserved, but there was never any enforcement.
Usage of these namespaces will now cause a warning in the engine logs to discourage their use, and will error instead in 18.12 and above.
Asynchronous service create
and service update
Deprecated In Release: v17.05.0
Disabled by default in release: v17.10
Docker 17.05.0 added an optional --detach=false
option to make the
docker service create
and docker service update
work synchronously. This
option will be enabled by default in Docker 17.10, at which point the --detach
flag can be used to use the previous (asynchronous) behavior.
The default for this option will also be changed accordingly for docker service rollback
and docker service scale
in Docker 17.10.
-g
and --graph
flags on dockerd
Deprecated In Release: v17.05.0
The -g
or --graph
flag for the dockerd
or docker daemon
command was
used to indicate the directory in which to store persistent data and resource
configuration and has been replaced with the more descriptive --data-root
flag.
These flags were added before Docker 1.0, so will not be removed, only hidden, to discourage their use.
Top-level network properties in NetworkSettings
Deprecated In Release: v1.13.0
Target For Removal In Release: v17.12
When inspecting a container, NetworkSettings
contains top-level information
about the default (“bridge”) network;
EndpointID
, Gateway
, GlobalIPv6Address
, GlobalIPv6PrefixLen
, IPAddress
,
IPPrefixLen
, IPv6Gateway
, and MacAddress
.
These properties are deprecated in favor of per-network properties in
NetworkSettings.Networks
. These properties were already “deprecated” in
docker 1.9, but kept around for backward compatibility.
Refer to #17538 for further information.
filter
param for /images/json
endpoint
Deprecated In Release: v1.13.0
Target For Removal In Release: v17.12
The filter
param to filter the list of image by reference (name or name:tag) is now implemented as a regular filter, named reference
.
repository:shortid
image references
Deprecated In Release: v1.13.0
Removed In Release: v17.12
The repository:shortid
syntax for referencing images is very little used,
collides with tag references, and can be confused with digest references.
Support for the repository:shortid
notation to reference images was removed
in Docker 17.12.
docker daemon
subcommand
Deprecated In Release: v1.13.0
Removed In Release: v17.12
The daemon is moved to a separate binary (dockerd
), and should be used instead.
Duplicate keys with conflicting values in engine labels
Deprecated In Release: v1.13.0
Removed In Release: v17.12
When setting duplicate keys with conflicting values, an error will be produced, and the daemon will fail to start.
MAINTAINER
in Dockerfile
Deprecated In Release: v1.13.0
MAINTAINER
was an early very limited form of LABEL
which should be used instead.
API calls without a version
Deprecated In Release: v1.13.0
Target For Removal In Release: v17.12
API versions should be supplied to all API calls to ensure compatibility with
future Engine versions. Instead of just requesting, for example, the URL
/containers/json
, you must now request /v1.25/containers/json
.
Backing filesystem without d_type
support for overlay/overlay2
Deprecated In Release: v1.13.0
Removed In Release: v17.12
The overlay and overlay2 storage driver does not work as expected if the backing
filesystem does not support d_type
. For example, XFS does not support d_type
if it is formatted with the ftype=0
option.
Starting with Docker 17.12, new installations will not support running overlay2 on
a backing filesystem without d_type
support. For existing installations that upgrade
to 17.12, a warning will be printed.
Please also refer to #27358 for further information.
Three arguments form in docker import
Deprecated In Release: v0.6.7
Removed In Release: v1.12.0
The docker import
command format file|URL|- [REPOSITORY [TAG]]
is deprecated since November 2013. It’s no more supported.
-h
shorthand for --help
Deprecated In Release: v1.12.0
Target For Removal In Release: v17.09
The shorthand (-h
) is less common than --help
on Linux and cannot be used
on all subcommands (due to it conflicting with, e.g. -h
/ --hostname
on
docker create
). For this reason, the -h
shorthand was not printed in the
“usage” output of subcommands, nor documented, and is now marked “deprecated”.
-e
and --email
flags on docker login
Deprecated In Release: v1.11.0
Removed In Release: v17.06
The docker login command is removing the ability to automatically register for an account with the target registry if the given username doesn’t exist. Due to this change, the email flag is no longer required, and will be deprecated.
Separator (:
) of --security-opt
flag on docker run
Deprecated In Release: v1.11.0
Target For Removal In Release: v17.06
The flag --security-opt
doesn’t use the colon separator (:
) anymore to divide keys and values, it uses the equal symbol (=
) for consistency with other similar flags, like --storage-opt
.
/containers/(id or name)/copy
endpoint
Deprecated In Release: v1.8.0
Removed In Release: v1.12.0
The endpoint /containers/(id or name)/copy
is deprecated in favor of /containers/(id or name)/archive
.
Ambiguous event fields in API
Deprecated In Release: v1.10.0
The fields ID
, Status
and From
in the events API have been deprecated in favor of a more rich structure.
See the events API documentation for the new format.
-f
flag on docker tag
Deprecated In Release: v1.10.0
Removed In Release: v1.12.0
To make tagging consistent across the various docker
commands, the -f
flag on the docker tag
command is deprecated. It is not longer necessary to specify -f
to move a tag from one image to another. Nor will docker
generate an error if the -f
flag is missing and the specified tag is already in use.
HostConfig at API container start
Deprecated In Release: v1.10.0
Removed In Release: v1.12.0
Passing an HostConfig
to POST /containers/{name}/start
is deprecated in favor of
defining it at container creation (POST /containers/create
).
--before
and --since
flags on docker ps
Deprecated In Release: v1.10.0
Removed In Release: v1.12.0
The docker ps --before
and docker ps --since
options are deprecated.
Use docker ps --filter=before=...
and docker ps --filter=since=...
instead.
--automated
and --stars
flags on docker search
Deprecated in Release: v1.12.0
Target For Removal In Release: v17.09
The docker search --automated
and docker search --stars
options are deprecated.
Use docker search --filter=is-automated=...
and docker search --filter=stars=...
instead.
Driver Specific Log Tags
Deprecated In Release: v1.9.0
Removed In Release: v1.12.0
Log tags are now generated in a standard way across different logging drivers.
Because of which, the driver specific log tag options syslog-tag
, gelf-tag
and
fluentd-tag
have been deprecated in favor of the generic tag
option.
docker --log-driver=syslog --log-opt tag="{{.ImageName}}/{{.Name}}/{{.ID}}"
LXC built-in exec driver
Deprecated In Release: v1.8.0
Removed In Release: v1.10.0
The built-in LXC execution driver, the lxc-conf flag, and API fields have been removed.
Old Command Line Options
Deprecated In Release: v1.8.0
Removed In Release: v1.10.0
The flags -d
and --daemon
are deprecated in favor of the daemon
subcommand:
docker daemon -H ...
The following single-dash (-opt
) variant of certain command line options
are deprecated and replaced with double-dash options (--opt
):
docker attach -nostdin
docker attach -sig-proxy
docker build -no-cache
docker build -rm
docker commit -author
docker commit -run
docker events -since
docker history -notrunc
docker images -notrunc
docker inspect -format
docker ps -beforeId
docker ps -notrunc
docker ps -sinceId
docker rm -link
docker run -cidfile
docker run -dns
docker run -entrypoint
docker run -expose
docker run -link
docker run -lxc-conf
docker run -n
docker run -privileged
docker run -volumes-from
docker search -notrunc
docker search -stars
docker search -t
docker search -trusted
docker tag -force
The following double-dash options are deprecated and have no replacement:
docker run --cpuset
docker run --networking
docker ps --since-id
docker ps --before-id
docker search --trusted
Deprecated In Release: v1.5.0
Removed In Release: v1.12.0
The single-dash (-help
) was removed, in favor of the double-dash --help
docker -help
docker [COMMAND] -help
--run
flag on docker commit
Deprecated In Release: v0.10.0
Removed In Release: v1.13.0
The flag --run
of the docker commit (and its short version -run
) were deprecated in favor
of the --changes
flag that allows to pass Dockerfile
commands.
Interacting with V1 registries
Disabled By Default In Release: v17.06
Removed In Release: v17.12
Version 1.8.3 added a flag (--disable-legacy-registry=false
) which prevents the
docker daemon from pull
, push
, and login
operations against v1
registries. Though enabled by default, this signals the intent to deprecate
the v1 protocol.
Support for the v1 protocol to the public registry was removed in 1.13. Any mirror configurations using v1 should be updated to use a v2 registry mirror.
Starting with Docker 17.12, support for V1 registries has been removed, and the
--disable-legacy-registry
flag can no longer be used, and dockerd
will fail to
start when set.
--disable-legacy-registry
override daemon option
Disabled In Release: v17.12
Target For Removal In Release: v18.03
The --disable-legacy-registry
flag was disabled in Docker 17.12 and will print
an error when used. For this error to be printed, the flag itself is still present,
but hidden. The flag will be removed in Docker 18.03.
Docker Content Trust ENV passphrase variables name change
Deprecated In Release: v1.9.0
Removed In Release: v1.12.0
Since 1.9, Docker Content Trust Offline key has been renamed to Root key and the Tagging key has been renamed to Repository key. Due to this renaming, we’re also changing the corresponding environment variables
- DOCKER_CONTENT_TRUST_OFFLINE_PASSPHRASE is now named DOCKER_CONTENT_TRUST_ROOT_PASSPHRASE
- DOCKER_CONTENT_TRUST_TAGGING_PASSPHRASE is now named DOCKER_CONTENT_TRUST_REPOSITORY_PASSPHRASE
--api-enable-cors
flag on dockerd
Deprecated In Release: v1.6.0
Removed In Release: v17.09
The flag --api-enable-cors
is deprecated since v1.6.0. Use the flag
--api-cors-header
instead.