forked from openshift/installer
-
Notifications
You must be signed in to change notification settings - Fork 6
/
cluster.go
169 lines (145 loc) · 5.07 KB
/
cluster.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
package cluster
import (
"encoding/json"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"github.com/openshift/installer/pkg/asset"
"github.com/openshift/installer/pkg/asset/cluster/aws"
"github.com/openshift/installer/pkg/asset/cluster/libvirt"
"github.com/openshift/installer/pkg/asset/cluster/openstack"
"github.com/openshift/installer/pkg/asset/installconfig"
"github.com/openshift/installer/pkg/asset/kubeconfig"
"github.com/openshift/installer/pkg/asset/password"
"github.com/openshift/installer/pkg/terraform"
"github.com/openshift/installer/pkg/types"
)
const (
// metadataFileName is name of the file where clustermetadata is stored.
metadataFileName = "metadata.json"
)
var (
// kubeadminPasswordPath is the path where kubeadmin user password is stored.
kubeadminPasswordPath = filepath.Join("auth", "kubeadmin-password")
)
// Cluster uses the terraform executable to launch a cluster
// with the given terraform tfvar and generated templates.
type Cluster struct {
FileList []*asset.File
}
var _ asset.WritableAsset = (*Cluster)(nil)
// Name returns the human-friendly name of the asset.
func (c *Cluster) Name() string {
return "Cluster"
}
// Dependencies returns the direct dependency for launching
// the cluster.
func (c *Cluster) Dependencies() []asset.Asset {
return []asset.Asset{
&installconfig.InstallConfig{},
&TerraformVariables{},
&kubeconfig.Admin{},
&password.KubeadminPassword{},
}
}
// Generate launches the cluster and generates the terraform state file on disk.
func (c *Cluster) Generate(parents asset.Parents) (err error) {
installConfig := &installconfig.InstallConfig{}
terraformVariables := &TerraformVariables{}
adminKubeconfig := &kubeconfig.Admin{}
kubeadminPassword := &password.KubeadminPassword{}
parents.Get(installConfig, terraformVariables, adminKubeconfig, kubeadminPassword)
// Copy the terraform.tfvars to a temp directory where the terraform will be invoked within.
tmpDir, err := ioutil.TempDir("", "openshift-install-")
if err != nil {
return errors.Wrap(err, "failed to create temp dir for terraform execution")
}
defer os.RemoveAll(tmpDir)
terraformVariablesFile := terraformVariables.Files()[0]
if err := ioutil.WriteFile(filepath.Join(tmpDir, terraformVariablesFile.Filename), terraformVariablesFile.Data, 0600); err != nil {
return errors.Wrap(err, "failed to write terraform.tfvars file")
}
metadata := &types.ClusterMetadata{
ClusterName: installConfig.Config.ObjectMeta.Name,
}
defer func() {
if data, err2 := json.Marshal(metadata); err2 == nil {
c.FileList = append(c.FileList, &asset.File{
Filename: metadataFileName,
Data: data,
})
} else {
err2 = errors.Wrap(err2, "failed to Marshal ClusterMetadata")
if err == nil {
err = err2
} else {
logrus.Error(err2)
}
}
c.FileList = append(c.FileList, &asset.File{
Filename: kubeadminPasswordPath,
Data: []byte(kubeadminPassword.Password),
})
// serialize metadata and stuff it into c.FileList
}()
switch {
case installConfig.Config.Platform.AWS != nil:
metadata.ClusterPlatformMetadata.AWS = aws.Metadata(installConfig.Config)
case installConfig.Config.Platform.OpenStack != nil:
metadata.ClusterPlatformMetadata.OpenStack = openstack.Metadata(installConfig.Config)
case installConfig.Config.Platform.Libvirt != nil:
metadata.ClusterPlatformMetadata.Libvirt = libvirt.Metadata(installConfig.Config)
default:
return fmt.Errorf("no known platform")
}
logrus.Infof("Creating cluster...")
stateFile, err := terraform.Apply(tmpDir, installConfig.Config.Platform.Name())
if err != nil {
err = errors.Wrap(err, "failed to create cluster")
}
data, err2 := ioutil.ReadFile(stateFile)
if err2 == nil {
c.FileList = append(c.FileList, &asset.File{
Filename: terraform.StateFileName,
Data: data,
})
} else {
if err == nil {
err = err2
} else {
logrus.Errorf("Failed to read tfstate: %v", err2)
}
}
// TODO(yifan): Use the kubeconfig to verify the cluster is up.
return err
}
// Files returns the FileList generated by the asset.
func (c *Cluster) Files() []*asset.File {
return c.FileList
}
// Load returns error if the tfstate file is already on-disk, because we want to
// prevent user from accidentally re-launching the cluster.
func (c *Cluster) Load(f asset.FileFetcher) (found bool, err error) {
_, err = f.FetchByName(terraform.StateFileName)
if err != nil {
if os.IsNotExist(err) {
return false, nil
}
return false, err
}
return true, fmt.Errorf("%q already exists. There may already be a running cluster", terraform.StateFileName)
}
// LoadMetadata loads the cluster metadata from an asset directory.
func LoadMetadata(dir string) (cmetadata *types.ClusterMetadata, err error) {
raw, err := ioutil.ReadFile(filepath.Join(dir, metadataFileName))
if err != nil {
return nil, errors.Wrapf(err, "failed to read %s file", metadataFileName)
}
if err = json.Unmarshal(raw, &cmetadata); err != nil {
return nil, errors.Wrapf(err, "failed to Unmarshal data from %s file to types.ClusterMetadata", metadataFileName)
}
return cmetadata, err
}