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
|
% podman-play-kube(1)
## NAME
podman-play-kube - Create containers, pods or volumes based on Kubernetes YAML
## SYNOPSIS
**podman play kube** [*options*] *file.yml|-*
## DESCRIPTION
**podman play kube** will read in a structured file of Kubernetes YAML. It will then recreate the containers, pods or volumes described in the YAML. Containers within a pod are then started and the ID of the new Pod or the name of the new Volume is output. If the yaml file is specified as "-" then `podman play kube` will read the YAML file from stdin.
Using the `--down` command line option, it is also capable of tearing down the pods created by a previous run of `podman play kube`.
Ideally the input file would be one created by Podman (see podman-generate-kube(1)). This would guarantee a smooth import and expected results.
Currently, the supported Kubernetes kinds are:
- Pod
- Deployment
- PersistentVolumeClaim
`Kubernetes Pods or Deployments`
Only two volume types are supported by play kube, the *hostPath* and *persistentVolumeClaim* volume types. For the *hostPath* volume type, only the *default (empty)*, *DirectoryOrCreate*, *Directory*, *FileOrCreate*, *File*, and *Socket* subtypes are supported. The *CharDevice* and *BlockDevice* subtypes are not supported. Podman interprets the value of *hostPath* *path* as a file path when it contains at least one forward slash, otherwise Podman treats the value as the name of a named volume. When using a *persistentVolumeClaim*, the value for *claimName* is the name for the Podman named volume.
Note: *hostPath* volume types created by play kube will be given an SELinux private label (Z)
Note: If the `:latest` tag is used, Podman will attempt to pull the image from a registry. If the image was built locally with Podman or Buildah, it will have `localhost` as the domain, in that case, Podman will use the image from the local store even if it has the `:latest` tag.
`Kubernetes PersistentVolumeClaims`
A Kubernetes PersistentVolumeClaim represents a Podman named volume. Only the PersistentVolumeClaim name is required by Podman to create a volume. Kubernetes annotations can be used to make use of the available options for Podman volumes.
- volume.podman.io/driver
- volume.podman.io/device
- volume.podman.io/type
- volume.podman.io/uid
- volume.podman.io/gid
- volume.podman.io/mount-options
Play kube is capable of building images on the fly given the correct directory layout and Containerfiles. This
option is not available for remote clients yet. Consider the following excerpt from a YAML file:
```
apiVersion: v1
kind: Pod
metadata:
...
spec:
containers:
- command:
- top
- name: container
value: podman
image: foobar
...
```
If there is a directory named `foobar` in the current working directory with a file named `Containerfile` or `Dockerfile`,
Podman play kube will build that image and name it `foobar`. An example directory structure for this example would look
like:
```
|- mykubefiles
|- myplayfile.yaml
|- foobar
|- Containerfile
```
The build will consider `foobar` to be the context directory for the build. If there is an image in local storage
called `foobar`, the image will not be built unless the `--build` flag is used.
## OPTIONS
#### **--authfile**=*path*
Path of the authentication file. Default is ${XDG\_RUNTIME\_DIR}/containers/auth.json, which is set using `podman login`.
If the authorization state is not found there, $HOME/.docker/config.json is checked, which is set using `docker login`.
Note: You can also override the default path of the authentication file by setting the REGISTRY\_AUTH\_FILE
environment variable. `export REGISTRY_AUTH_FILE=path`
#### **--build**
Build images even if they are found in the local storage.
#### **--cert-dir**=*path*
Use certificates at *path* (\*.crt, \*.cert, \*.key) to connect to the registry.
Please refer to containers-certs.d(5) for details. (This option is not available with the remote Podman client)
#### **--configmap**=*path*
Use Kubernetes configmap YAML at path to provide a source for environment variable values within the containers of the pod.
Note: The *--configmap* option can be used multiple times or a comma-separated list of paths can be used to pass multiple Kubernetes configmap YAMLs.
#### **--creds**
The [username[:password]] to use to authenticate with the registry if required.
If one or both values are not supplied, a command line prompt will appear and the
value can be entered. The password is entered without echo.
#### **--down**
Tears down the pods that were created by a previous run of `play kube`. The pods are stopped and then
removed. Any volumes created are left intact.
#### **--ip**=*IP address*
Assign a static ip address to the pod. This option can be specified several times when play kube creates more than one pod.
#### **--log-driver**=driver
Set logging driver for all created containers.
#### **--mac-address**=*MAC address*
Assign a static mac address to the pod. This option can be specified several times when play kube creates more than one pod.
#### **--network**=*networks*, **--net**
A comma-separated list of the names of CNI networks the pod should join.
#### **--quiet**, **-q**
Suppress output information when pulling images
#### **--seccomp-profile-root**=*path*
Directory path for seccomp profiles (default: "/var/lib/kubelet/seccomp"). (This option is not available with the remote Podman client)
#### **--start**=*true|false*
Start the pod after creating it, set to false to only create it.
#### **--tls-verify**=*true|false*
Require HTTPS and verify certificates when contacting registries (default: true). If explicitly set to true,
then TLS verification will be used. If set to false, then TLS verification will not be used. If not specified,
TLS verification will be used unless the target registry is listed as an insecure registry in registries.conf.
#### **--help**, **-h**
Print usage statement
## EXAMPLES
Recreate the pod and containers as described in a file called `demo.yml`
```
$ podman play kube demo.yml
52182811df2b1e73f36476003a66ec872101ea59034ac0d4d3a7b40903b955a6
```
Recreate the pod and containers as described in a file `demo.yml` sent to stdin
```
$ cat demo.yml | podman play kube -
52182811df2b1e73f36476003a66ec872101ea59034ac0d4d3a7b40903b955a6
```
Teardown the pod and containers as described in a file `demo.yml`
```
$ podman play kube --down demo.yml
Pods stopped:
52182811df2b1e73f36476003a66ec872101ea59034ac0d4d3a7b40903b955a6
Pods removed:
52182811df2b1e73f36476003a66ec872101ea59034ac0d4d3a7b40903b955a6
```
Provide `configmap-foo.yml` and `configmap-bar.yml` as sources for environment variables within the containers.
```
$ podman play kube demo.yml --configmap configmap-foo.yml,configmap-bar.yml
52182811df2b1e73f36476003a66ec872101ea59034ac0d4d3a7b40903b955a6
$ podman play kube demo.yml --configmap configmap-foo.yml --configmap configmap-bar.yml
52182811df2b1e73f36476003a66ec872101ea59034ac0d4d3a7b40903b955a6
```
CNI network(s) can be specified as comma-separated list using ``--network``
```
$ podman play kube demo.yml --network cni1,cni2
52182811df2b1e73f36476003a66ec872101ea59034ac0d4d3a7b40903b955a6
```
Please take into account that CNI networks must be created first using podman-network-create(1).
## SEE ALSO
podman(1), podman-container(1), podman-pod(1), podman-generate-kube(1), podman-play(1), podman-network-create(1), containers-certs.d(5)
## HISTORY
December 2018, Originally compiled by Brent Baude (bbaude at redhat dot com)
|
