forked from kubernetes/test-infra
-
Notifications
You must be signed in to change notification settings - Fork 0
/
anywhere.go
183 lines (153 loc) · 5.77 KB
/
anywhere.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
/*
Copyright 2017 The Kubernetes Authors.
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 main
import (
"bytes"
"flag"
"fmt"
"os"
"os/exec"
"strings"
"text/template"
"time"
)
var (
// kubernetes-anywhere specific flags.
kubernetesAnywherePath = flag.String("kubernetes-anywhere-path", "",
"(kubernetes-anywhere only) Path to the kubernetes-anywhere directory. Must be set for kubernetes-anywhere.")
kubernetesAnywherePhase2Provider = flag.String("kubernetes-anywhere-phase2-provider", "ignition",
"(kubernetes-anywhere only) Provider for phase2 bootstrapping. (Defaults to ignition).")
kubernetesAnywhereKubeadmVersion = flag.String("kubernetes-anywhere-kubeadm-version", "stable",
"(kubernetes-anywhere only) Version of kubeadm to use, if phase2-provider is kubeadm. May be \"stable\" or a gs:// link to a custom build.")
kubernetesAnywhereKubernetesVersion = flag.String("kubernetes-anywhere-kubernetes-version", "",
"(kubernetes-anywhere only) Version of Kubernetes to use (e.g. latest, stable, latest-1.6, 1.6.3, etc).")
kubernetesAnywhereCluster = flag.String("kubernetes-anywhere-cluster", "",
"(kubernetes-anywhere only) Cluster name. Must be set for kubernetes-anywhere.")
kubernetesAnywhereUpTimeout = flag.Duration("kubernetes-anywhere-up-timeout", 20*time.Minute,
"(kubernetes-anywhere only) Time limit between starting a cluster and making a successful call to the Kubernetes API.")
)
const kubernetesAnywhereConfigTemplate = `
.phase1.num_nodes=4
.phase1.cluster_name="{{.Cluster}}"
.phase1.cloud_provider="gce"
.phase1.gce.os_image="ubuntu-1604-xenial-v20160420c"
.phase1.gce.instance_type="n1-standard-1"
.phase1.gce.project="{{.Project}}"
.phase1.gce.region="us-central1"
.phase1.gce.zone="us-central1-c"
.phase1.gce.network="default"
.phase2.installer_container="docker.io/colemickens/k8s-ignition:latest"
.phase2.docker_registry="gcr.io/google-containers"
.phase2.kubernetes_version="{{.KubernetesVersion}}"
.phase2.provider="{{.Phase2Provider}}"
.phase2.kubeadm.version="{{.KubeadmVersion}}"
.phase3.run_addons=y
.phase3.weave_net={{if eq .Phase2Provider "kubeadm" -}} y {{- else -}} n {{- end}}
.phase3.kube_proxy=n
.phase3.dashboard=n
.phase3.heapster=n
.phase3.kube_dns=n
`
type kubernetesAnywhere struct {
path string
// These are exported only because their use in the config template requires it.
Phase2Provider string
KubeadmVersion string
KubernetesVersion string
Project string
Cluster string
}
func NewKubernetesAnywhere() (*kubernetesAnywhere, error) {
if *kubernetesAnywherePath == "" {
return nil, fmt.Errorf("--kubernetes-anywhere-path is required")
}
if *kubernetesAnywhereCluster == "" {
return nil, fmt.Errorf("--kubernetes-anywhere-cluster is required")
}
project, ok := os.LookupEnv("PROJECT")
if !ok {
return nil, fmt.Errorf("The PROJECT environment variable is required to be set for kubernetes-anywhere")
}
// Set KUBERNETES_CONFORMANCE_TEST so the auth info is picked up
// from kubectl instead of bash inference.
if err := os.Setenv("KUBERNETES_CONFORMANCE_TEST", "yes"); err != nil {
return nil, err
}
k := &kubernetesAnywhere{
path: *kubernetesAnywherePath,
Phase2Provider: *kubernetesAnywherePhase2Provider,
KubeadmVersion: *kubernetesAnywhereKubeadmVersion,
KubernetesVersion: *kubernetesAnywhereKubernetesVersion,
Project: project,
Cluster: *kubernetesAnywhereCluster,
}
if err := k.writeConfig(); err != nil {
return nil, err
}
return k, nil
}
func (k kubernetesAnywhere) getConfig() (string, error) {
// As needed, plumb through more CLI options to replace these defaults
tmpl, err := template.New("kubernetes-anywhere-config").Parse(kubernetesAnywhereConfigTemplate)
if err != nil {
return "", fmt.Errorf("Error creating template for KubernetesAnywhere config: %v", err)
}
var buf bytes.Buffer
if err = tmpl.Execute(&buf, k); err != nil {
return "", fmt.Errorf("Error executing template for KubernetesAnywhere config: %v", err)
}
return buf.String(), nil
}
func (k kubernetesAnywhere) writeConfig() error {
config, err := k.getConfig()
if err != nil {
return fmt.Errorf("Could not generate config: %v", err)
}
f, err := os.Create(k.path + "/.config")
if err != nil {
return fmt.Errorf("Could not create file: %v", err)
}
defer f.Close()
fmt.Fprint(f, config)
return nil
}
func (k kubernetesAnywhere) Up() error {
cmd := exec.Command("make", "-C", k.path, "WAIT_FOR_KUBECONFIG=y", "deploy")
if err := finishRunning(cmd); err != nil {
return err
}
nodes := 4 // For now, this is hardcoded in the config
return waitForNodes(k, nodes+1, *kubernetesAnywhereUpTimeout)
}
func (k kubernetesAnywhere) IsUp() error {
return isUp(k)
}
func (k kubernetesAnywhere) SetupKubecfg() error {
o, err := output(exec.Command("make", "--silent", "-C", k.path, "kubeconfig-path"))
if err != nil {
return fmt.Errorf("Could not get kubeconfig-path: %v", err)
}
kubecfg := strings.TrimSuffix(string(o), "\n")
if err = os.Setenv("KUBECONFIG", kubecfg); err != nil {
return err
}
return nil
}
func (k kubernetesAnywhere) Down() error {
err := finishRunning(exec.Command("make", "-C", k.path, "kubeconfig-path"))
if err != nil {
// This is expected if the cluster doesn't exist.
return nil
}
return finishRunning(exec.Command("make", "-C", k.path, "FORCE_DESTROY=y", "destroy"))
}