Files
kubeshark/cmd/tap.go
2023-03-27 16:26:09 +03:00

64 lines
3.4 KiB
Go

package cmd
import (
"errors"
"fmt"
"github.com/creasty/defaults"
"github.com/kubeshark/kubeshark/config"
"github.com/kubeshark/kubeshark/config/configStructs"
"github.com/kubeshark/kubeshark/errormessage"
"github.com/kubeshark/kubeshark/misc"
"github.com/rs/zerolog/log"
"github.com/spf13/cobra"
)
var tapCmd = &cobra.Command{
Use: "tap [POD REGEX]",
Short: "Capture the network traffic in your Kubernetes cluster",
RunE: func(cmd *cobra.Command, args []string) error {
tap()
return nil
},
PreRunE: func(cmd *cobra.Command, args []string) error {
if len(args) == 1 {
config.Config.Tap.PodRegexStr = args[0]
} else if len(args) > 1 {
return errors.New("unexpected number of arguments")
}
if err := config.Config.Tap.Validate(); err != nil {
return errormessage.FormatError(err)
}
return nil
},
}
func init() {
rootCmd.AddCommand(tapCmd)
defaultTapConfig := configStructs.TapConfig{}
if err := defaults.Set(&defaultTapConfig); err != nil {
log.Debug().Err(err).Send()
}
tapCmd.Flags().StringP(configStructs.DockerRegistryLabel, "r", defaultTapConfig.Docker.Registry, "The Docker registry that's hosting the images")
tapCmd.Flags().StringP(configStructs.DockerTagLabel, "t", defaultTapConfig.Docker.Tag, "The tag of the Docker images that are going to be pulled")
tapCmd.Flags().String(configStructs.DockerImagePullPolicy, defaultTapConfig.Docker.ImagePullPolicy, "ImagePullPolicy for the Docker images")
tapCmd.Flags().StringSlice(configStructs.DockerImagePullSecrets, defaultTapConfig.Docker.ImagePullSecrets, "ImagePullSecrets for the Docker images")
tapCmd.Flags().Uint16(configStructs.ProxyFrontPortLabel, defaultTapConfig.Proxy.Front.SrcPort, "Provide a custom port for the front-end proxy/port-forward")
tapCmd.Flags().Uint16(configStructs.ProxyHubPortLabel, defaultTapConfig.Proxy.Hub.SrcPort, "Provide a custom port for the Hub proxy/port-forward")
tapCmd.Flags().String(configStructs.ProxyHostLabel, defaultTapConfig.Proxy.Host, "Provide a custom host for the proxy/port-forward")
tapCmd.Flags().StringSliceP(configStructs.NamespacesLabel, "n", defaultTapConfig.Namespaces, "Namespaces selector")
tapCmd.Flags().BoolP(configStructs.AllNamespacesLabel, "A", defaultTapConfig.AllNamespaces, "Tap all namespaces")
tapCmd.Flags().StringP(configStructs.SelfNamespaceLabel, "s", defaultTapConfig.SelfNamespace, "Self-namespace of Kubeshark")
tapCmd.Flags().String(configStructs.StorageLimitLabel, defaultTapConfig.StorageLimit, "Override the default storage limit. (per node)")
tapCmd.Flags().Bool(configStructs.DryRunLabel, defaultTapConfig.DryRun, "Preview of all pods matching the regex, without tapping them")
tapCmd.Flags().StringP(configStructs.PcapLabel, "p", defaultTapConfig.Pcap, fmt.Sprintf("Capture from a PCAP snapshot of %s (.tar.gz) using your Docker Daemon instead of Kubernetes", misc.Software))
tapCmd.Flags().Bool(configStructs.ServiceMeshLabel, defaultTapConfig.ServiceMesh, "Capture the encrypted traffic if the cluster is configured with a service mesh and with mTLS")
tapCmd.Flags().Bool(configStructs.TlsLabel, defaultTapConfig.Tls, "Capture the traffic that's encrypted with OpenSSL or Go crypto/tls libraries")
tapCmd.Flags().Bool(configStructs.IgnoreTaintedLabel, defaultTapConfig.IgnoreTainted, "Ignore tainted pods while running Worker DaemonSet")
tapCmd.Flags().Bool(configStructs.DebugLabel, defaultTapConfig.Debug, "Enable the debug mode")
}