This repository has been archived by the owner on Jun 13, 2019. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 0
/
install.go
212 lines (189 loc) · 6.05 KB
/
install.go
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
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
/*
Copyright 2016 The Kubernetes Authors All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package installer // import "k8s.io/helm/cmd/helm/installer"
import (
"fmt"
"github.com/ghodss/yaml"
"k8s.io/kubernetes/pkg/api"
kerrors "k8s.io/kubernetes/pkg/api/errors"
"k8s.io/kubernetes/pkg/apis/extensions"
"k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
"k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset/typed/core/internalversion"
extensionsclient "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset/typed/extensions/internalversion"
"k8s.io/kubernetes/pkg/util/intstr"
"k8s.io/helm/pkg/version"
)
const defaultImage = "gcr.io/kubernetes-helm/tiller"
// Install uses kubernetes client to install tiller
//
// Returns the string output received from the operation, and an error if the
// command failed.
//
// If verbose is true, this will print the manifest to stdout.
func Install(client internalclientset.Interface, namespace, image string, canary, verbose bool) error {
if err := createDeployment(client.Extensions(), namespace, image, canary); err != nil {
return err
}
if err := createService(client.Core(), namespace); err != nil {
return err
}
return nil
}
//
// Upgrade uses kubernetes client to upgrade tiller to current version
//
// Returns an error if the command failed.
func Upgrade(client internalclientset.Interface, namespace, image string, canary bool) error {
obj, err := client.Extensions().Deployments(namespace).Get("tiller-deploy")
if err != nil {
return err
}
obj.Spec.Template.Spec.Containers[0].Image = selectImage(image, canary)
if _, err := client.Extensions().Deployments(namespace).Update(obj); err != nil {
return err
}
// If the service does not exists that would mean we are upgrading from a tiller version
// that didn't deploy the service, so install it.
if _, err := client.Core().Services(namespace).Get("tiller-deploy"); err != nil {
if !kerrors.IsNotFound(err) {
return err
}
if err := createService(client.Core(), namespace); err != nil {
return err
}
}
return nil
}
// createDeployment creates the Tiller deployment reource
func createDeployment(client extensionsclient.DeploymentsGetter, namespace, image string, canary bool) error {
obj := deployment(namespace, image, canary)
_, err := client.Deployments(obj.Namespace).Create(obj)
return err
}
// deployment gets the deployment object that installs Tiller.
func deployment(namespace, image string, canary bool) *extensions.Deployment {
return generateDeployment(namespace, selectImage(image, canary))
}
// createService creates the Tiller service resource
func createService(client internalversion.ServicesGetter, namespace string) error {
obj := service(namespace)
_, err := client.Services(obj.Namespace).Create(obj)
return err
}
// service gets the service object that installs Tiller.
func service(namespace string) *api.Service {
return generateService(namespace)
}
func selectImage(image string, canary bool) string {
switch {
case canary:
image = defaultImage + ":canary"
case image == "":
image = fmt.Sprintf("%s:%s", defaultImage, version.Version)
}
return image
}
// DeploymentManifest gets the manifest (as a string) that describes the Tiller Deployment
// resource.
func DeploymentManifest(namespace, image string, canary bool) (string, error) {
obj := deployment(namespace, image, canary)
buf, err := yaml.Marshal(obj)
return string(buf), err
}
// ServiceManifest gets the manifest (as a string) that describes the Tiller Service
// resource.
func ServiceManifest(namespace string) (string, error) {
obj := service(namespace)
buf, err := yaml.Marshal(obj)
return string(buf), err
}
func generateLabels(labels map[string]string) map[string]string {
labels["app"] = "helm"
return labels
}
func generateDeployment(namespace, image string) *extensions.Deployment {
labels := generateLabels(map[string]string{"name": "tiller"})
d := &extensions.Deployment{
ObjectMeta: api.ObjectMeta{
Namespace: namespace,
Name: "tiller-deploy",
Labels: labels,
},
Spec: extensions.DeploymentSpec{
Replicas: 1,
Template: api.PodTemplateSpec{
ObjectMeta: api.ObjectMeta{
Labels: labels,
},
Spec: api.PodSpec{
Containers: []api.Container{
{
Name: "tiller",
Image: image,
ImagePullPolicy: "IfNotPresent",
Ports: []api.ContainerPort{
{ContainerPort: 44134, Name: "tiller"},
},
Env: []api.EnvVar{
{Name: "TILLER_NAMESPACE", Value: namespace},
},
LivenessProbe: &api.Probe{
Handler: api.Handler{
HTTPGet: &api.HTTPGetAction{
Path: "/liveness",
Port: intstr.FromInt(44135),
},
},
InitialDelaySeconds: 1,
TimeoutSeconds: 1,
},
ReadinessProbe: &api.Probe{
Handler: api.Handler{
HTTPGet: &api.HTTPGetAction{
Path: "/readiness",
Port: intstr.FromInt(44135),
},
},
InitialDelaySeconds: 1,
TimeoutSeconds: 1,
},
},
},
},
},
},
}
return d
}
func generateService(namespace string) *api.Service {
labels := generateLabels(map[string]string{"name": "tiller"})
s := &api.Service{
ObjectMeta: api.ObjectMeta{
Namespace: namespace,
Name: "tiller-deploy",
Labels: labels,
},
Spec: api.ServiceSpec{
Type: api.ServiceTypeClusterIP,
Ports: []api.ServicePort{
{
Name: "tiller",
Port: 44134,
TargetPort: intstr.FromString("tiller"),
},
},
Selector: labels,
},
}
return s
}