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
|
package pods
import (
"context"
"fmt"
"io/ioutil"
"os"
"strings"
"github.com/containers/libpod/cmd/podman/common"
"github.com/containers/libpod/cmd/podman/parse"
"github.com/containers/libpod/cmd/podman/registry"
"github.com/containers/libpod/cmd/podman/validate"
"github.com/containers/libpod/pkg/domain/entities"
"github.com/containers/libpod/pkg/errorhandling"
"github.com/containers/libpod/pkg/specgen"
"github.com/containers/libpod/pkg/util"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"github.com/spf13/cobra"
"github.com/spf13/pflag"
)
var (
podCreateDescription = `After creating the pod, the pod ID is printed to stdout.
You can then start it at any time with the podman pod start <pod_id> command. The pod will be created with the initial state 'created'.`
createCommand = &cobra.Command{
Use: "create",
Args: validate.NoArgs,
Short: "Create a new empty pod",
Long: podCreateDescription,
RunE: create,
}
)
var (
createOptions entities.PodCreateOptions
labels, labelFile []string
podIDFile string
share string
)
func init() {
registry.Commands = append(registry.Commands, registry.CliCommand{
Mode: []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
Command: createCommand,
Parent: podCmd,
})
flags := createCommand.Flags()
flags.SetInterspersed(false)
flags.AddFlagSet(common.GetNetFlags())
flags.StringVar(&createOptions.CGroupParent, "cgroup-parent", "", "Set parent cgroup for the pod")
flags.BoolVar(&createOptions.Infra, "infra", true, "Create an infra container associated with the pod to share namespaces with")
flags.StringVar(&createOptions.InfraImage, "infra-image", containerConfig.Engine.InfraImage, "The image of the infra container to associate with the pod")
flags.StringVar(&createOptions.InfraCommand, "infra-command", containerConfig.Engine.InfraCommand, "The command to run on the infra container when the pod is started")
flags.StringSliceVar(&labelFile, "label-file", []string{}, "Read in a line delimited file of labels")
flags.StringSliceVarP(&labels, "label", "l", []string{}, "Set metadata on pod (default [])")
flags.StringVarP(&createOptions.Name, "name", "n", "", "Assign a name to the pod")
flags.StringVarP(&createOptions.Hostname, "hostname", "", "", "Set a hostname to the pod")
flags.StringVar(&podIDFile, "pod-id-file", "", "Write the pod ID to the file")
flags.StringVar(&share, "share", specgen.DefaultKernelNamespaces, "A comma delimited list of kernel namespaces the pod will share")
flags.SetNormalizeFunc(aliasNetworkFlag)
}
func aliasNetworkFlag(_ *pflag.FlagSet, name string) pflag.NormalizedName {
if name == "net" {
name = "network"
}
return pflag.NormalizedName(name)
}
func create(cmd *cobra.Command, args []string) error {
var (
err error
podIDFD *os.File
)
createOptions.Labels, err = parse.GetAllLabels(labelFile, labels)
if err != nil {
return errors.Wrapf(err, "unable to process labels")
}
if !createOptions.Infra {
logrus.Debugf("Not creating an infra container")
if cmd.Flag("infra-command").Changed {
return errors.New("cannot set infra-command without an infra container")
}
createOptions.InfraCommand = ""
if cmd.Flag("infra-image").Changed {
return errors.New("cannot set infra-image without an infra container")
}
createOptions.InfraImage = ""
if cmd.Flag("share").Changed && share != "none" && share != "" {
return fmt.Errorf("cannot set share(%s) namespaces without an infra container", cmd.Flag("share").Value)
}
createOptions.Share = nil
} else {
createOptions.Share = strings.Split(share, ",")
}
if cmd.Flag("pod-id-file").Changed {
podIDFD, err = util.OpenExclusiveFile(podIDFile)
if err != nil && os.IsExist(err) {
return errors.Errorf("pod id file exists. Ensure another pod is not using it or delete %s", podIDFile)
}
if err != nil {
return errors.Errorf("error opening pod-id-file %s", podIDFile)
}
defer errorhandling.CloseQuiet(podIDFD)
defer errorhandling.SyncQuiet(podIDFD)
}
createOptions.Net, err = common.NetFlagsToNetOptions(cmd)
if err != nil {
return err
}
createOptions.Net.Network = specgen.Namespace{}
if cmd.Flag("network").Changed {
netInput, err := cmd.Flags().GetString("network")
if err != nil {
return err
}
n := specgen.Namespace{}
switch netInput {
case "bridge":
n.NSMode = specgen.Bridge
case "host":
n.NSMode = specgen.Host
case "slirp4netns":
n.NSMode = specgen.Slirp
default:
// Container and NS mode are presently unsupported
n.NSMode = specgen.Bridge
createOptions.Net.CNINetworks = strings.Split(netInput, ",")
}
createOptions.Net.Network = n
}
if len(createOptions.Net.PublishPorts) > 0 {
if !createOptions.Infra {
return errors.Errorf("you must have an infra container to publish port bindings to the host")
}
}
response, err := registry.ContainerEngine().PodCreate(context.Background(), createOptions)
if err != nil {
return err
}
if len(podIDFile) > 0 {
if err = ioutil.WriteFile(podIDFile, []byte(response.Id), 0644); err != nil {
return errors.Wrapf(err, "failed to write pod ID to file %q", podIDFile)
}
}
fmt.Println(response.Id)
return nil
}
|
