update docs, and remove some unused code related to "compose on kubernetes" deprecation

cli/command/context/export.go

@@ -14,7 +14,6 @@ import (
 
 // ExportOptions are the options used for exporting a context
 type ExportOptions struct {
-	Kubeconfig  bool
 	ContextName string
 	Dest        string
 }
@@ -23,26 +22,22 @@ func newExportCommand(dockerCli command.Cli) *cobra.Command {
 	opts := &ExportOptions{}
 	cmd := &cobra.Command{
 		Use:   "export [OPTIONS] CONTEXT [FILE|-]",
-		Short: "Export a context to a tar or kubeconfig file",
+		Short: "Export a context to a tar archive FILE or a tar stream on STDOUT.",
 		Args:  cli.RequiresRangeArgs(1, 2),
 		RunE: func(cmd *cobra.Command, args []string) error {
 			opts.ContextName = args[0]
 			if len(args) == 2 {
 				opts.Dest = args[1]
 			} else {
-				opts.Dest = opts.ContextName
-				if opts.Kubeconfig {
-					opts.Dest += ".kubeconfig"
-				} else {
-					opts.Dest += ".dockercontext"
-				}
+				opts.Dest = opts.ContextName + ".dockercontext"
 			}
 			return RunExport(dockerCli, opts)
 		},
 	}
 
 	flags := cmd.Flags()
-	flags.BoolVar(&opts.Kubeconfig, "kubeconfig", false, "Export as a kubeconfig file")
+	flags.Bool("kubeconfig", false, "Export as a kubeconfig file")
+	flags.MarkDeprecated("kubeconfig", "option will be ignored")
 	flags.SetAnnotation("kubeconfig", "kubernetes", nil)
 	flags.SetAnnotation("kubeconfig", "deprecated", nil)
 	return cmd

cli/command/defaultcontextstore_test.go

@@ -60,9 +60,7 @@ func TestDefaultContextInitializer(t *testing.T) {
 	cli, err := NewDockerCli()
 	assert.NilError(t, err)
 	defer env.Patch(t, "DOCKER_HOST", "ssh://someswarmserver")()
-	cli.configFile = &configfile.ConfigFile{
-		StackOrchestrator: "swarm",
-	}
+	cli.configFile = &configfile.ConfigFile{}
 	ctx, err := ResolveDefaultContext(&cliflags.CommonOptions{
 		TLS: true,
 		TLSOptions: &tlsconfig.Options{

cli/command/formatter/context.go

@@ -75,6 +75,9 @@ func (c *clientContextContext) DockerEndpoint() string {
 	return c.c.DockerEndpoint
 }
 
+// KubernetesEndpoint returns the kubernetes endpoint.
+//
+// Deprecated: support for kubernetes endpoints in contexts has been removed, and this formatting option will always be empty.
 func (c *clientContextContext) KubernetesEndpoint() string {
 	return ""
 }

cli/command/stack/swarm/common.go

@@ -17,10 +17,6 @@ func getStackFilter(namespace string) filters.Args {
 	return filter
 }
 
-func getStackServiceFilter(namespace string) filters.Args {
-	return getStackFilter(namespace)
-}
-
 func getStackFilterFromOpt(namespace string, opt opts.FilterOpt) filters.Args {
 	filter := opt.Value()
 	filter.Add("label", convert.LabelNamespace+"="+namespace)
@@ -34,7 +30,7 @@ func getAllStacksFilter() filters.Args {
 }
 
 func getStackServices(ctx context.Context, apiclient client.APIClient, namespace string) ([]swarm.Service, error) {
-	return apiclient.ServiceList(ctx, types.ServiceListOptions{Filters: getStackServiceFilter(namespace)})
+	return apiclient.ServiceList(ctx, types.ServiceListOptions{Filters: getStackFilter(namespace)})
 }
 
 func getStackNetworks(ctx context.Context, apiclient client.APIClient, namespace string) ([]types.NetworkResource, error) {

cli/command/system/version.go

@@ -128,13 +128,6 @@ func runVersion(dockerCli command.Cli, opts *versionOptions) error {
 	}
 
 	// TODO print error if kubernetes is used?
-	// orchestrator, err := dockerCli.StackOrchestrator("")
-	// if err != nil {
-	// 	return cli.StatusError{StatusCode: 64, Status: err.Error()}
-	// }
-	// if orchestrator.HasKubernetes() {
-	// 	// TODO print error if kubernetes is used?
-	// }
 
 	vd := versionInfo{
 		Client: clientVersion{

cli/config/configfile/file.go

@@ -45,7 +45,7 @@ type ConfigFile struct {
 	PruneFilters         []string                     `json:"pruneFilters,omitempty"`
 	Proxies              map[string]ProxyConfig       `json:"proxies,omitempty"`
 	Experimental         string                       `json:"experimental,omitempty"`
-	StackOrchestrator    string                       `json:"stackOrchestrator,omitempty"`
+	StackOrchestrator    string                       `json:"stackOrchestrator,omitempty"` // Deprecated: swarm is now the default orchestrator, and this option is ignored.
 	CurrentContext       string                       `json:"currentContext,omitempty"`
 	CLIPluginsExtraDirs  []string                     `json:"cliPluginsExtraDirs,omitempty"`
 	Plugins              map[string]map[string]string `json:"plugins,omitempty"`

docs/deprecated.md

@@ -197,9 +197,31 @@ to decrypt the private key, and store it un-encrypted to continue using it.
 ### Kubernetes stack and context support
 
 **Deprecated in Release: v20.10**
+**Removed in Release: v21.xx**
+
+Following the deprecation of [Compose on Kubernetes](https://github.com/docker/compose-on-kubernetes),
+support for Kubernetes in the `stack` and `context` commands has been removed from
+the cli, and options related to this functionality are now either ignored, or may
+produce an error.
+
+The following command-line flags are removed from the `docker context` subcommands:
+
+- `--default-stack-orchestrator` - swarm is now the only (and default) orchestrator for stacks.
+- `--kubernetes` - the kubernetes endpoint can no longer be stored in `docker context`.
+- `--kubeconfig` - exporting a context as a kubeconfig file is no longer supported.
+
+The output produced by the `docker context inspect` subcommand no longer contains
+information about `StackOrchestrator` and `Kubernetes` endpoints for new contexts.
+
+The following command-line flags are removed from the `docker stack` subcommands:
+
+- `--kubeconfig` - using a kubeconfig file as context is no longer supported.
+- `--namespace` - configuring the kubernetes namespace for stacks is no longer supported.
+- `--orchestrator` - swarm is now the only (and default) orchestrator for stacks.
 
-Following the deprecation of [Compose on Kubernetes](https://github.com/docker/compose-on-kubernetes), support for
-Kubernetes in the `stack` and `context` commands in the docker CLI is now marked as deprecated as well.
+The `DOCKER_STACK_ORCHESTRATOR`, `DOCKER_ORCHESTRATOR`, and `KUBECONFIG` environment
+variables, as well as the `stackOrchestrator` option in the `~/.docker/config.json`
+cli configuration file are no longer used, and ignored.
 
 ### Pulling images from non-compliant image registries
 

docs/reference/commandline/cli.md

@@ -65,18 +65,17 @@ the [installation](https://docs.docker.com/install/) instructions for your opera
 The following list of environment variables are supported by the `docker` command
 line:
 
-| Variable                      | Description                                                                                                                           |
-|:------------------------------|:--------------------------------------------------------------------------------------------------------------------------------------|
-| `DOCKER_API_VERSION`          | Override the negotiated API version to use for debugging (e.g. `1.19`)                                                                |
+| Variable                      | Description                                                                                                                             |
+|:------------------------------|:----------------------------------------------------------------------------------------------------------------------------------------|
+| `DOCKER_API_VERSION`          | Override the negotiated API version to use for debugging (e.g. `1.19`)                                                                  |
 | `DOCKER_CERT_PATH`            | Location of your authentication keys. This variable is used both by the `docker` CLI and the [`dockerd` daemon](dockerd.md)             |
-| `DOCKER_CONFIG`               | The location of your client configuration files.                                                                                      |
-| `DOCKER_CONTENT_TRUST_SERVER` | The URL of the Notary server to use. Defaults to the same URL as the registry.                                                        |
-| `DOCKER_CONTENT_TRUST`        | When set Docker uses notary to sign and verify images. Equates to `--disable-content-trust=false` for build, create, pull, push, run. |
-| `DOCKER_CONTEXT`              | Name of the `docker context` to use (overrides `DOCKER_HOST` env var and default context set with `docker context use`)               |
-| `DOCKER_DEFAULT_PLATFORM`     | Default platform for commands that take the `--platform` flag.                                                                        |
+| `DOCKER_CONFIG`               | The location of your client configuration files.                                                                                        |
+| `DOCKER_CONTENT_TRUST_SERVER` | The URL of the Notary server to use. Defaults to the same URL as the registry.                                                          |
+| `DOCKER_CONTENT_TRUST`        | When set Docker uses notary to sign and verify images. Equates to `--disable-content-trust=false` for build, create, pull, push, run.   |
+| `DOCKER_CONTEXT`              | Name of the `docker context` to use (overrides `DOCKER_HOST` env var and default context set with `docker context use`)                 |
+| `DOCKER_DEFAULT_PLATFORM`     | Default platform for commands that take the `--platform` flag.                                                                          |
 | `DOCKER_HIDE_LEGACY_COMMANDS` | When set, Docker hides "legacy" top-level commands (such as `docker rm`, and `docker pull`) in `docker help` output, and only `Management commands` per object-type (e.g., `docker container`) are printed. This may become the default in a future release, at which point this environment-variable is removed. |
-| `DOCKER_HOST`                 | Daemon socket to connect to.                                                                                                          |
-| `DOCKER_STACK_ORCHESTRATOR`   | Configure the default orchestrator to use when using `docker stack` management commands.                                              |
+| `DOCKER_HOST`                 | Daemon socket to connect to.                                                                                                            |
 | `DOCKER_TLS_VERIFY`           | When set Docker uses TLS and verifies the remote. This variable is used both by the `docker` CLI and the [`dockerd` daemon](dockerd.md) |
 | `BUILDKIT_PROGRESS`           | Set type of progress output (`auto`, `plain`, `tty`) when [building](build.md) with [BuildKit backend](../builder.md#buildkit). Use plain to show container output (default `auto`). |
 
@@ -192,14 +191,6 @@ for a specific registry. For more information, see the
 [**Credential helpers** section in the `docker login` documentation](login.md#credential-helpers)
 
 
-### Orchestrator options for docker stacks
-
-The property `stackOrchestrator` specifies the default orchestrator to use when
-running `docker stack` management commands. Valid values are `"swarm"`,
-`"kubernetes"`, and `"all"`. This property can be overridden with the
-`DOCKER_STACK_ORCHESTRATOR` environment variable, or the `--orchestrator` flag.
-
-
 ### Automatic proxy configuration for containers
 
 The property `proxies` specifies proxy environment variables to be automatically
@@ -282,7 +273,6 @@ various fields:
     "awesomereg.example.org": "hip-star",
     "unicorn.example.com": "vcbait"
   },
-  "stackOrchestrator": "kubernetes",
   "plugins": {
     "plugin1": {
       "option": "value"

docs/reference/commandline/context_create.md

@@ -21,30 +21,16 @@ cert                Path to TLS certificate file
 key                 Path to TLS key file
 skip-tls-verify     Skip TLS certificate validation
 
-Kubernetes endpoint config:
-
-NAME                 DESCRIPTION
-from                 Copy Kubernetes endpoint configuration from an existing context
-config-file          Path to a Kubernetes config file
-context-override     Overrides the context set in the kubernetes config file
-namespace-override   Overrides the namespace set in the kubernetes config file
-
 Example:
 
 $ docker context create my-context \
       --description "some description" \
       --docker "host=tcp://myserver:2376,ca=~/ca-file,cert=~/cert-file,key=~/key-file"
 
 Options:
-      --default-stack-orchestrator string   Default orchestrator for
-                                            stack operations to use with
-                                            this context
-                                            (swarm|kubernetes|all)
       --description string                  Description of the context
       --docker stringToString               set the docker endpoint
                                             (default [])
-      --kubernetes stringToString           set the kubernetes endpoint
-                                            (default [])
       --from string                         Create the context from an existing context
 ```
 
@@ -55,17 +41,15 @@ configuration to connect to different clusters or single nodes.
 
 ## Examples
 
-### Create a context with a docker and kubernetes endpoint
+### Create a context with a docker endpoint
 
 To create a context from scratch provide the docker and, if required,
 kubernetes options. The example below creates the context `my-context`
-with a docker endpoint of `/var/run/docker.sock` and a kubernetes configuration
-sourced from the file `/home/me/my-kube-config`:
+with a docker endpoint of `/var/run/docker.sock`:
 
 ```console
 $ docker context create \
     --docker host=unix:///var/run/docker.sock \
-    --kubernetes config-file=/home/me/my-kube-config \
     my-context
 ```
 
@@ -92,32 +76,18 @@ $ source my-setup-script.sh
 $ docker context create my-context
 ```
 
-To source only the `docker` endpoint configuration from an existing context
+To source the `docker` endpoint configuration from an existing context
 use the `--docker from=<context-name>` option. The example below creates a
 new context named `my-context` using the docker endpoint configuration from
-the existing context `existing-context` and a kubernetes configuration sourced
-from the file `/home/me/my-kube-config`:
+the existing context `existing-context`:
 
 ```console
 $ docker context create \
     --docker from=existing-context \
-    --kubernetes config-file=/home/me/my-kube-config \
-    my-context
-```
-
-To source only the `kubernetes` configuration from an existing context use the
-`--kubernetes from=<context-name>` option. The example below creates a new
-context named `my-context` using the kuberentes configuration from the existing
-context `existing-context` and a docker endpoint of `/var/run/docker.sock`:
-
-```console
-$ docker context create \
-    --docker host=unix:///var/run/docker.sock \
-    --kubernetes from=existing-context \
     my-context
 ```
 
-Docker and Kubernetes endpoints configurations, as well as default stack
-orchestrator and description can be modified with `docker context update`.
+Docker endpoints configurations, as well as the description can be modified with
+`docker context update`.
 
 Refer to the [`docker context update` reference](context_update.md) for details.

docs/reference/commandline/context_export.md

@@ -9,15 +9,16 @@ keywords: "context, export"
 ```markdown
 Usage:  docker context export [OPTIONS] CONTEXT [FILE|-]
 
-Export a context to a tar or kubeconfig file
-
-Options:
-      --kubeconfig   Export as a kubeconfig file
+Export a context to a tar archive FILE or a tar stream on STDOUT.
 ```
 
 ## Description
 
-Exports a context in a file that can then be used with `docker context import`
-(or with `kubectl` if `--kubeconfig` is set). Default output filename is
-`<CONTEXT>.dockercontext`, or `<CONTEXT>.kubeconfig` if `--kubeconfig` is set.
-To export to `STDOUT`, you can run `docker context export my-context -`.
+Exports a context to a file that can then be used with `docker context import`.
+
+The default output filename is `<CONTEXT>.dockercontext`. To export to `STDOUT`, 
+use `-` as filename, for example:
+
+```console
+$ docker context export my-context -
+```

docs/reference/commandline/context_inspect.md

@@ -30,27 +30,16 @@ $ docker context inspect "local+aks"
   {
     "Name": "local+aks",
     "Metadata": {
-      "Description": "Local Docker Engine + Azure AKS endpoint",
-      "StackOrchestrator": "kubernetes"
+      "Description": "Local Docker Engine",
+      "StackOrchestrator": "swarm"
     },
     "Endpoints": {
       "docker": {
         "Host": "npipe:////./pipe/docker_engine",
         "SkipTLSVerify": false
-      },
-      "kubernetes": {
-        "Host": "https://simon-aks-***.hcp.uksouth.azmk8s.io:443",
-        "SkipTLSVerify": false,
-        "DefaultNamespace": "default"
       }
     },
-    "TLSMaterial": {
-      "kubernetes": [
-        "ca.pem",
-        "cert.pem",
-        "key.pem"
-      ]
-    },
+    "TLSMaterial": {},
     "Storage": {
       "MetadataPath": "C:\\Users\\simon\\.docker\\contexts\\meta\\cb6d08c0a1bfa5fe6f012e61a442788c00bed93f509141daff05f620fc54ddee",
       "TLSPath": "C:\\Users\\simon\\.docker\\contexts\\tls\\cb6d08c0a1bfa5fe6f012e61a442788c00bed93f509141daff05f620fc54ddee"

docs/reference/commandline/context_update.md

@@ -21,28 +21,14 @@ cert                Path to TLS certificate file
 key                 Path to TLS key file
 skip-tls-verify     Skip TLS certificate validation
 
-Kubernetes endpoint config:
-
-NAME                 DESCRIPTION
-from                 Copy Kubernetes endpoint configuration from an existing context
-config-file          Path to a Kubernetes config file
-context-override     Overrides the context set in the kubernetes config file
-namespace-override   Overrides the namespace set in the kubernetes config file
-
 Example:
 
 $ docker context update my-context --description "some description" --docker "host=tcp://myserver:2376,ca=~/ca-file,cert=~/cert-file,key=~/key-file"
 
 Options:
-      --default-stack-orchestrator string   Default orchestrator for
-                                            stack operations to use with
-                                            this context
-                                            (swarm|kubernetes|all)
       --description string                  Description of the context
       --docker stringToString               set the docker endpoint
                                             (default [])
-      --kubernetes stringToString           set the kubernetes endpoint
-                                            (default [])
 ```
 
 ## Description

docs/reference/commandline/stack.md

@@ -13,8 +13,6 @@ Manage Docker stacks
 
 Options:
       --help                  Print usage
-      --kubeconfig string     Kubernetes config file
-      --orchestrator string   Orchestrator to use (swarm|kubernetes|all)
 
 Commands:
   deploy      Deploy a new stack or update an existing stack

docs/reference/commandline/stack_deploy.md

@@ -17,9 +17,6 @@ Aliases:
 Options:
   -c, --compose-file strings  Path to a Compose file, or "-" to read from stdin
       --help                  Print usage
-      --kubeconfig string     Kubernetes config file
-      --namespace string      Kubernetes namespace to use
-      --orchestrator string   Orchestrator to use (swarm|kubernetes|all)
       --prune                 Prune services that are no longer referenced
       --resolve-image string  Query the registry to resolve image digest and supported platforms
                               ("always"|"changed"|"never") (default "always")

docs/reference/commandline/stack_ls.md

@@ -17,9 +17,6 @@ Aliases:
 Options:
       --help                  Print usage
       --format string         Pretty-print stacks using a Go template
-      --kubeconfig string     Kubernetes config file
-      --namespace string      Kubernetes namespace to use
-      --orchestrator string   Orchestrator to use (swarm|kubernetes|all)
 ```
 
 ## Description