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
|
package main
import (
"fmt"
"os"
"strings"
"github.com/containers/libpod/cmd/podman/libpodruntime"
"github.com/containers/libpod/cmd/podman/shared"
"github.com/containers/libpod/libpod"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"github.com/urfave/cli"
)
var (
// Kernel namespaces shared by default within a pod
DefaultKernelNamespaces = "cgroup,ipc,net,uts"
)
var podCreateDescription = "Creates a new empty pod. The pod ID is then" +
" 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'."
var podCreateFlags = []cli.Flag{
cli.StringFlag{
Name: "cgroup-parent",
Usage: "Set parent cgroup for the pod",
},
cli.BoolTFlag{
Name: "infra",
Usage: "Create an infra container associated with the pod to share namespaces with",
},
cli.StringFlag{
Name: "infra-image",
Usage: "The image of the infra container to associate with the pod",
Value: libpod.DefaultInfraImage,
},
cli.StringFlag{
Name: "infra-command",
Usage: "The command to run on the infra container when the pod is started",
Value: libpod.DefaultInfraCommand,
},
cli.StringSliceFlag{
Name: "label-file",
Usage: "Read in a line delimited file of labels (default [])",
},
cli.StringSliceFlag{
Name: "label, l",
Usage: "Set metadata on pod (default [])",
},
cli.StringFlag{
Name: "name, n",
Usage: "Assign a name to the pod",
},
cli.StringFlag{
Name: "pod-id-file",
Usage: "Write the pod ID to the file",
},
cli.StringFlag{
Name: "share",
Usage: "A comma delimited list of kernel namespaces the pod will share",
Value: DefaultKernelNamespaces,
},
}
var podCreateCommand = cli.Command{
Name: "create",
Usage: "Create a new empty pod",
Description: podCreateDescription,
Flags: podCreateFlags,
Action: podCreateCmd,
SkipArgReorder: true,
UseShortOptionHandling: true,
OnUsageError: usageErrorHandler,
}
func podCreateCmd(c *cli.Context) error {
var options []libpod.PodCreateOption
var err error
if err = validateFlags(c, createFlags); err != nil {
return err
}
runtime, err := libpodruntime.GetRuntime(c)
if err != nil {
return errors.Wrapf(err, "error creating libpod runtime")
}
defer runtime.Shutdown(false)
if c.IsSet("pod-id-file") {
if _, err = os.Stat(c.String("pod-id-file")); err == nil {
return errors.Errorf("pod id file exists. ensure another pod is not using it or delete %s", c.String("pod-id-file"))
}
if err = libpod.WriteFile("", c.String("pod-id-file")); err != nil {
return errors.Wrapf(err, "unable to write pod id file %s", c.String("pod-id-file"))
}
}
if !c.BoolT("infra") && c.IsSet("share") && c.String("share") != "none" && c.String("share") != "" {
return errors.Errorf("You cannot share kernel namespaces on the pod level without an infra container")
}
if c.IsSet("cgroup-parent") {
options = append(options, libpod.WithPodCgroupParent(c.String("cgroup-parent")))
}
labels, err := getAllLabels(c.StringSlice("label-file"), c.StringSlice("label"))
if err != nil {
return errors.Wrapf(err, "unable to process labels")
}
if len(labels) != 0 {
options = append(options, libpod.WithPodLabels(labels))
}
if c.IsSet("name") {
options = append(options, libpod.WithPodName(c.String("name")))
}
if c.BoolT("infra") {
options = append(options, libpod.WithInfraContainer())
nsOptions, err := shared.GetNamespaceOptions(strings.Split(c.String("share"), ","))
if err != nil {
return err
}
options = append(options, nsOptions...)
}
// always have containers use pod cgroups
// User Opt out is not yet supported
options = append(options, libpod.WithPodCgroups())
ctx := getContext()
pod, err := runtime.NewPod(ctx, options...)
if err != nil {
return err
}
if c.IsSet("pod-id-file") {
err = libpod.WriteFile(pod.ID(), c.String("pod-id-file"))
if err != nil {
logrus.Error(err)
}
}
fmt.Printf("%s\n", pod.ID())
return nil
}
|
