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package pods
import (
"fmt"
"os"
"github.com/containers/common/pkg/auth"
"github.com/containers/common/pkg/completion"
"github.com/containers/image/v5/types"
"github.com/containers/podman/v3/cmd/podman/common"
"github.com/containers/podman/v3/cmd/podman/registry"
"github.com/containers/podman/v3/cmd/podman/utils"
"github.com/containers/podman/v3/pkg/domain/entities"
"github.com/containers/podman/v3/pkg/util"
"github.com/pkg/errors"
"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
}
var (
// https://kubernetes.io/docs/reference/command-line-tools-reference/kubelet/
defaultSeccompRoot = "/var/lib/kubelet/seccomp"
kubeOptions = playKubeOptionsWrapper{}
kubeDescription = `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.`
kubeCmd = &cobra.Command{
Use: "kube [options] KUBEFILE|-",
Short: "Play a pod or volume based on Kubernetes YAML.",
Long: kubeDescription,
RunE: kube,
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{
Mode: []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
Command: kubeCmd,
Parent: playCmd,
})
flags := kubeCmd.Flags()
flags.SetNormalizeFunc(utils.AliasFlags)
credsFlagName := "creds"
flags.StringVar(&kubeOptions.CredentialsCLI, credsFlagName, "", "`Credentials` (USERNAME:PASSWORD) to use for authenticating to a registry")
_ = kubeCmd.RegisterFlagCompletionFunc(credsFlagName, completion.AutocompleteNone)
networkFlagName := "network"
flags.StringVar(&kubeOptions.Network, networkFlagName, "", "Connect pod to CNI network(s)")
_ = kubeCmd.RegisterFlagCompletionFunc(networkFlagName, common.AutocompleteNetworkFlag)
logDriverFlagName := "log-driver"
flags.StringVar(&kubeOptions.LogDriver, logDriverFlagName, "", "Logging driver for the container")
_ = kubeCmd.RegisterFlagCompletionFunc(logDriverFlagName, common.AutocompleteLogDriver)
flags.BoolVarP(&kubeOptions.Quiet, "quiet", "q", false, "Suppress output information when pulling images")
flags.BoolVar(&kubeOptions.TLSVerifyCLI, "tls-verify", true, "Require HTTPS and verify certificates when contacting registries")
flags.BoolVar(&kubeOptions.StartCLI, "start", true, "Start the pod after creating it")
authfileFlagName := "authfile"
flags.StringVar(&kubeOptions.Authfile, authfileFlagName, auth.GetDefaultAuthFile(), "Path of the authentication file. Use REGISTRY_AUTH_FILE environment variable to override")
_ = kubeCmd.RegisterFlagCompletionFunc(authfileFlagName, completion.AutocompleteDefault)
if !registry.IsRemote() {
certDirFlagName := "cert-dir"
flags.StringVar(&kubeOptions.CertDir, certDirFlagName, "", "`Pathname` of a directory containing TLS certificates and keys")
_ = kubeCmd.RegisterFlagCompletionFunc(certDirFlagName, completion.AutocompleteDefault)
flags.StringVar(&kubeOptions.SignaturePolicy, "signature-policy", "", "`Pathname` of signature policy file (not usually used)")
seccompProfileRootFlagName := "seccomp-profile-root"
flags.StringVar(&kubeOptions.SeccompProfileRoot, seccompProfileRootFlagName, defaultSeccompRoot, "Directory path for seccomp profiles")
_ = kubeCmd.RegisterFlagCompletionFunc(seccompProfileRootFlagName, completion.AutocompleteDefault)
configmapFlagName := "configmap"
flags.StringSliceVar(&kubeOptions.ConfigMaps, configmapFlagName, []string{}, "`Pathname` of a YAML file containing a kubernetes configmap")
_ = kubeCmd.RegisterFlagCompletionFunc(configmapFlagName, completion.AutocompleteDefault)
}
_ = flags.MarkHidden("signature-policy")
}
func kube(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") {
kubeOptions.SkipTLSVerify = types.NewOptionalBool(!kubeOptions.TLSVerifyCLI)
}
if cmd.Flags().Changed("start") {
kubeOptions.Start = types.NewOptionalBool(kubeOptions.StartCLI)
}
if kubeOptions.Authfile != "" {
if _, err := os.Stat(kubeOptions.Authfile); err != nil {
return err
}
}
if kubeOptions.CredentialsCLI != "" {
creds, err := util.ParseRegistryCreds(kubeOptions.CredentialsCLI)
if err != nil {
return err
}
kubeOptions.Username = creds.Username
kubeOptions.Password = creds.Password
}
yamlfile := args[0]
if yamlfile == "-" {
yamlfile = "/dev/stdin"
}
report, err := registry.ContainerEngine().PlayKube(registry.GetContext(), yamlfile, kubeOptions.PlayKubeOptions)
if err != nil {
return 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 errors.Errorf("failed to start %d containers", ctrsFailed)
}
return nil
}
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