summaryrefslogtreecommitdiff
path: root/cmd/podman/kube/play.go
blob: 685cb521cc218adb5beb8d391f90a831f43c8fe2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
package pods

import (
	"errors"
	"fmt"
	"net"
	"os"
	"strings"

	"github.com/containers/common/pkg/auth"
	"github.com/containers/common/pkg/completion"
	"github.com/containers/image/v5/types"
	"github.com/containers/podman/v4/cmd/podman/common"
	"github.com/containers/podman/v4/cmd/podman/registry"
	"github.com/containers/podman/v4/cmd/podman/utils"
	"github.com/containers/podman/v4/libpod/define"
	"github.com/containers/podman/v4/pkg/domain/entities"
	"github.com/containers/podman/v4/pkg/errorhandling"
	"github.com/containers/podman/v4/pkg/util"
	"github.com/spf13/cobra"
)

// playKubeOptionsWrapper allows for separating CLI-only fields from API-only
// fields.
type playKubeOptionsWrapper struct {
	entities.PlayKubeOptions

	TLSVerifyCLI   bool
	CredentialsCLI string
	StartCLI       bool
	BuildCLI       bool
	annotations    []string
	macs           []string
}

var (
	// https://kubernetes.io/docs/reference/command-line-tools-reference/kubelet/
	defaultSeccompRoot = "/var/lib/kubelet/seccomp"
	playOptions        = playKubeOptionsWrapper{}
	playDescription    = `Command reads in a structured file of Kubernetes YAML.

  It creates pods or volumes based on the Kubernetes kind described in the YAML. Supported kinds are Pods, Deployments and PersistentVolumeClaims.`

	playCmd = &cobra.Command{
		Use:               "play [options] KUBEFILE|-",
		Short:             "Play a pod or volume based on Kubernetes YAML.",
		Long:              playDescription,
		RunE:              Play,
		Args:              cobra.ExactArgs(1),
		ValidArgsFunction: common.AutocompleteDefaultOneArg,
		Example: `podman kube play nginx.yml
  cat nginx.yml | podman kube play -
  podman kube play --creds user:password --seccomp-profile-root /custom/path apache.yml`,
	}
)

var (
	playKubeCmd = &cobra.Command{
		Use:               "kube [options] KUBEFILE|-",
		Short:             "Play a pod or volume based on Kubernetes YAML.",
		Long:              playDescription,
		Hidden:            true,
		RunE:              playKube,
		Args:              cobra.ExactArgs(1),
		ValidArgsFunction: common.AutocompleteDefaultOneArg,
		Example: `podman play kube nginx.yml
  cat nginx.yml | podman play kube -
  podman play kube --creds user:password --seccomp-profile-root /custom/path apache.yml`,
	}
)

func init() {
	registry.Commands = append(registry.Commands, registry.CliCommand{
		Command: playCmd,
		Parent:  kubeCmd,
	})
	playFlags(playCmd)

	registry.Commands = append(registry.Commands, registry.CliCommand{
		Command: playKubeCmd,
		Parent:  playKubeParentCmd,
	})
	playFlags(playKubeCmd)
}

func playFlags(cmd *cobra.Command) {
	flags := cmd.Flags()
	flags.SetNormalizeFunc(utils.AliasFlags)

	annotationFlagName := "annotation"
	flags.StringSliceVar(
		&playOptions.annotations,
		annotationFlagName, []string{},
		"Add annotations to pods (key=value)",
	)
	_ = cmd.RegisterFlagCompletionFunc(annotationFlagName, completion.AutocompleteNone)
	credsFlagName := "creds"
	flags.StringVar(&playOptions.CredentialsCLI, credsFlagName, "", "`Credentials` (USERNAME:PASSWORD) to use for authenticating to a registry")
	_ = cmd.RegisterFlagCompletionFunc(credsFlagName, completion.AutocompleteNone)

	staticMACFlagName := "mac-address"
	flags.StringSliceVar(&playOptions.macs, staticMACFlagName, nil, "Static MAC addresses to assign to the pods")
	_ = cmd.RegisterFlagCompletionFunc(staticMACFlagName, completion.AutocompleteNone)

	networkFlagName := "network"
	flags.StringArrayVar(&playOptions.Networks, networkFlagName, nil, "Connect pod to network(s) or network mode")
	_ = cmd.RegisterFlagCompletionFunc(networkFlagName, common.AutocompleteNetworkFlag)

	staticIPFlagName := "ip"
	flags.IPSliceVar(&playOptions.StaticIPs, staticIPFlagName, nil, "Static IP addresses to assign to the pods")
	_ = cmd.RegisterFlagCompletionFunc(staticIPFlagName, completion.AutocompleteNone)

	logDriverFlagName := "log-driver"
	flags.StringVar(&playOptions.LogDriver, logDriverFlagName, common.LogDriver(), "Logging driver for the container")
	_ = cmd.RegisterFlagCompletionFunc(logDriverFlagName, common.AutocompleteLogDriver)

	logOptFlagName := "log-opt"
	flags.StringSliceVar(
		&playOptions.LogOptions,
		logOptFlagName, []string{},
		"Logging driver options",
	)
	_ = cmd.RegisterFlagCompletionFunc(logOptFlagName, common.AutocompleteLogOpt)

	usernsFlagName := "userns"
	flags.StringVar(&playOptions.Userns, usernsFlagName, os.Getenv("PODMAN_USERNS"),
		"User namespace to use",
	)
	_ = cmd.RegisterFlagCompletionFunc(usernsFlagName, common.AutocompleteUserNamespace)

	flags.BoolVar(&playOptions.NoHosts, "no-hosts", false, "Do not create /etc/hosts within the pod's containers, instead use the version from the image")
	flags.BoolVarP(&playOptions.Quiet, "quiet", "q", false, "Suppress output information when pulling images")
	flags.BoolVar(&playOptions.TLSVerifyCLI, "tls-verify", true, "Require HTTPS and verify certificates when contacting registries")
	flags.BoolVar(&playOptions.StartCLI, "start", true, "Start the pod after creating it")

	authfileFlagName := "authfile"
	flags.StringVar(&playOptions.Authfile, authfileFlagName, auth.GetDefaultAuthFile(), "Path of the authentication file. Use REGISTRY_AUTH_FILE environment variable to override")
	_ = cmd.RegisterFlagCompletionFunc(authfileFlagName, completion.AutocompleteDefault)

	downFlagName := "down"
	flags.BoolVar(&playOptions.Down, downFlagName, false, "Stop pods defined in the YAML file")

	replaceFlagName := "replace"
	flags.BoolVar(&playOptions.Replace, replaceFlagName, false, "Delete and recreate pods defined in the YAML file")

	if !registry.IsRemote() {
		certDirFlagName := "cert-dir"
		flags.StringVar(&playOptions.CertDir, certDirFlagName, "", "`Pathname` of a directory containing TLS certificates and keys")
		_ = cmd.RegisterFlagCompletionFunc(certDirFlagName, completion.AutocompleteDefault)

		seccompProfileRootFlagName := "seccomp-profile-root"
		flags.StringVar(&playOptions.SeccompProfileRoot, seccompProfileRootFlagName, defaultSeccompRoot, "Directory path for seccomp profiles")
		_ = cmd.RegisterFlagCompletionFunc(seccompProfileRootFlagName, completion.AutocompleteDefault)

		configmapFlagName := "configmap"
		flags.StringSliceVar(&playOptions.ConfigMaps, configmapFlagName, []string{}, "`Pathname` of a YAML file containing a kubernetes configmap")
		_ = cmd.RegisterFlagCompletionFunc(configmapFlagName, completion.AutocompleteDefault)

		buildFlagName := "build"
		flags.BoolVar(&playOptions.BuildCLI, buildFlagName, false, "Build all images in a YAML (given Containerfiles exist)")

		contextDirFlagName := "context-dir"
		flags.StringVar(&playOptions.ContextDir, contextDirFlagName, "", "Path to top level of context directory")
		_ = cmd.RegisterFlagCompletionFunc(contextDirFlagName, completion.AutocompleteDefault)

		// NOTE: The service-container flag is marked as hidden as it
		// is purely designed for running kube-play in systemd units.
		// It is not something users should need to know or care about.
		//
		// Having a flag rather than an env variable is cleaner.
		serviceFlagName := "service-container"
		flags.BoolVar(&playOptions.ServiceContainer, serviceFlagName, false, "Starts a service container before all pods")
		_ = flags.MarkHidden("service-container")

		flags.StringVar(&playOptions.SignaturePolicy, "signature-policy", "", "`Pathname` of signature policy file (not usually used)")

		_ = flags.MarkHidden("signature-policy")
	}
}

func Play(cmd *cobra.Command, args []string) error {
	// TLS verification in c/image is controlled via a `types.OptionalBool`
	// which allows for distinguishing among set-true, set-false, unspecified
	// which is important to implement a sane way of dealing with defaults of
	// boolean CLI flags.
	if cmd.Flags().Changed("tls-verify") {
		playOptions.SkipTLSVerify = types.NewOptionalBool(!playOptions.TLSVerifyCLI)
	}
	if cmd.Flags().Changed("start") {
		playOptions.Start = types.NewOptionalBool(playOptions.StartCLI)
	}
	if cmd.Flags().Changed("build") {
		playOptions.Build = types.NewOptionalBool(playOptions.BuildCLI)
	}
	if playOptions.Authfile != "" {
		if _, err := os.Stat(playOptions.Authfile); err != nil {
			return err
		}
	}
	if playOptions.ContextDir != "" && playOptions.Build != types.OptionalBoolTrue {
		return errors.New("--build must be specified when using --context-dir option")
	}
	if playOptions.CredentialsCLI != "" {
		creds, err := util.ParseRegistryCreds(playOptions.CredentialsCLI)
		if err != nil {
			return err
		}
		playOptions.Username = creds.Username
		playOptions.Password = creds.Password
	}

	for _, annotation := range playOptions.annotations {
		splitN := strings.SplitN(annotation, "=", 2)
		if len(splitN) > 2 {
			return fmt.Errorf("annotation %q must include an '=' sign", annotation)
		}
		if playOptions.Annotations == nil {
			playOptions.Annotations = make(map[string]string)
		}
		annotation := splitN[1]
		if len(annotation) > define.MaxKubeAnnotation {
			return fmt.Errorf("annotation exceeds maximum size, %d, of kubernetes annotation: %s", define.MaxKubeAnnotation, annotation)
		}
		playOptions.Annotations[splitN[0]] = annotation
	}
	yamlfile := args[0]
	if yamlfile == "-" {
		yamlfile = "/dev/stdin"
	}

	for _, mac := range playOptions.macs {
		m, err := net.ParseMAC(mac)
		if err != nil {
			return err
		}
		playOptions.StaticMACs = append(playOptions.StaticMACs, m)
	}
	if playOptions.Down {
		return teardown(yamlfile)
	}
	if playOptions.Replace {
		if err := teardown(yamlfile); err != nil && !errorhandling.Contains(err, define.ErrNoSuchPod) {
			return err
		}
	}
	return kubeplay(yamlfile)
}

func playKube(cmd *cobra.Command, args []string) error {
	return Play(cmd, args)
}

func teardown(yamlfile string) error {
	var (
		podStopErrors utils.OutputErrors
		podRmErrors   utils.OutputErrors
	)
	options := new(entities.PlayKubeDownOptions)
	f, err := os.Open(yamlfile)
	if err != nil {
		return err
	}
	defer f.Close()
	reports, err := registry.ContainerEngine().PlayKubeDown(registry.GetContext(), f, *options)
	if err != nil {
		return fmt.Errorf("%v: %w", yamlfile, err)
	}

	// Output stopped pods
	fmt.Println("Pods stopped:")
	for _, stopped := range reports.StopReport {
		if len(stopped.Errs) == 0 {
			fmt.Println(stopped.Id)
		} else {
			podStopErrors = append(podStopErrors, stopped.Errs...)
		}
	}
	// Dump any stop errors
	lastStopError := podStopErrors.PrintErrors()
	if lastStopError != nil {
		fmt.Fprintf(os.Stderr, "Error: %s\n", lastStopError)
	}

	// Output rm'd pods
	fmt.Println("Pods removed:")
	for _, removed := range reports.RmReport {
		if removed.Err == nil {
			fmt.Println(removed.Id)
		} else {
			podRmErrors = append(podRmErrors, removed.Err)
		}
	}
	return podRmErrors.PrintErrors()
}

func kubeplay(yamlfile string) error {
	f, err := os.Open(yamlfile)
	if err != nil {
		return err
	}
	defer f.Close()
	report, err := registry.ContainerEngine().PlayKube(registry.GetContext(), f, playOptions.PlayKubeOptions)
	if err != nil {
		return fmt.Errorf("%s: %w", yamlfile, err)
	}
	// Print volumes report
	for i, volume := range report.Volumes {
		if i == 0 {
			fmt.Println("Volumes:")
		}
		fmt.Println(volume.Name)
	}

	// Print pods report
	for _, pod := range report.Pods {
		for _, l := range pod.Logs {
			fmt.Fprint(os.Stderr, l)
		}
	}

	ctrsFailed := 0

	for _, pod := range report.Pods {
		fmt.Println("Pod:")
		fmt.Println(pod.ID)

		switch len(pod.Containers) {
		case 0:
			continue
		case 1:
			fmt.Println("Container:")
		default:
			fmt.Println("Containers:")
		}
		for _, ctr := range pod.Containers {
			fmt.Println(ctr)
		}
		ctrsFailed += len(pod.ContainerErrors)
		// If We have errors, add a newline
		if len(pod.ContainerErrors) > 0 {
			fmt.Println()
		}
		for _, err := range pod.ContainerErrors {
			fmt.Fprintln(os.Stderr, err)
		}
		// Empty line for space for next block
		fmt.Println()
	}

	if ctrsFailed > 0 {
		return fmt.Errorf("failed to start %d containers", ctrsFailed)
	}

	return nil
}