forked from openshift/origin
-
Notifications
You must be signed in to change notification settings - Fork 0
/
ensure.go
216 lines (187 loc) · 8.66 KB
/
ensure.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
213
214
215
216
package origin
import (
"io/ioutil"
"regexp"
"time"
"github.com/golang/glog"
kapi "k8s.io/kubernetes/pkg/api"
kapierror "k8s.io/kubernetes/pkg/api/errors"
kclient "k8s.io/kubernetes/pkg/client/unversioned"
"k8s.io/kubernetes/pkg/util"
"k8s.io/kubernetes/pkg/util/wait"
"github.com/openshift/origin/pkg/cmd/admin/policy"
authorizationapi "github.com/openshift/origin/pkg/authorization/api"
clusterpolicyregistry "github.com/openshift/origin/pkg/authorization/registry/clusterpolicy"
clusterpolicystorage "github.com/openshift/origin/pkg/authorization/registry/clusterpolicy/etcd"
"github.com/openshift/origin/pkg/cmd/server/admin"
"github.com/openshift/origin/pkg/cmd/server/bootstrappolicy"
)
// ensureOpenShiftSharedResourcesNamespace is called as part of global policy initialization to ensure shared namespace exists
func (c *MasterConfig) ensureOpenShiftSharedResourcesNamespace() {
if _, err := c.KubeClient().Namespaces().Get(c.Options.PolicyConfig.OpenShiftSharedResourcesNamespace); kapierror.IsNotFound(err) {
namespace, createErr := c.KubeClient().Namespaces().Create(&kapi.Namespace{ObjectMeta: kapi.ObjectMeta{Name: c.Options.PolicyConfig.OpenShiftSharedResourcesNamespace}})
if createErr != nil {
glog.Errorf("Error creating namespace: %v due to %v\n", c.Options.PolicyConfig.OpenShiftSharedResourcesNamespace, createErr)
return
}
c.ensureNamespaceServiceAccountRoleBindings(namespace)
}
}
// ensureOpenShiftInfraNamespace is called as part of global policy initialization to ensure infra namespace exists
func (c *MasterConfig) ensureOpenShiftInfraNamespace() {
ns := c.Options.PolicyConfig.OpenShiftInfrastructureNamespace
// Ensure namespace exists
namespace, err := c.KubeClient().Namespaces().Create(&kapi.Namespace{ObjectMeta: kapi.ObjectMeta{Name: ns}})
if kapierror.IsAlreadyExists(err) {
// Get the persisted namespace
namespace, err = c.KubeClient().Namespaces().Get(ns)
if err != nil {
glog.Errorf("Error getting namespace %s: %v", ns, err)
return
}
} else if err != nil {
glog.Errorf("Error creating namespace %s: %v", ns, err)
return
}
roleAccessor := policy.NewClusterRoleBindingAccessor(c.ServiceAccountRoleBindingClient())
for _, saName := range bootstrappolicy.InfraSAs.GetServiceAccounts() {
_, err := c.KubeClient().ServiceAccounts(ns).Create(&kapi.ServiceAccount{ObjectMeta: kapi.ObjectMeta{Name: saName}})
if err != nil && !kapierror.IsAlreadyExists(err) {
glog.Errorf("Error creating service account %s/%s: %v", ns, saName, err)
}
role, _ := bootstrappolicy.InfraSAs.RoleFor(saName)
reconcileRole := &policy.ReconcileClusterRolesOptions{
RolesToReconcile: []string{role.Name},
Confirmed: true,
Union: true,
Out: ioutil.Discard,
RoleClient: c.PrivilegedLoopbackOpenShiftClient.ClusterRoles(),
}
if err := reconcileRole.RunReconcileClusterRoles(nil, nil); err != nil {
glog.Errorf("Could not reconcile %v: %v\n", role.Name, err)
}
addRole := &policy.RoleModificationOptions{
RoleName: role.Name,
RoleBindingAccessor: roleAccessor,
Subjects: []kapi.ObjectReference{{Namespace: ns, Name: saName, Kind: "ServiceAccount"}},
}
if err := kclient.RetryOnConflict(kclient.DefaultRetry, func() error { return addRole.AddRole() }); err != nil {
glog.Errorf("Could not add %v service accounts to the %v cluster role: %v\n", saName, role.Name, err)
} else {
glog.V(2).Infof("Added %v service accounts to the %v cluster role: %v\n", saName, role.Name, err)
}
}
c.ensureNamespaceServiceAccountRoleBindings(namespace)
}
// ensureDefaultNamespaceServiceAccountRoles initializes roles for service accounts in the default namespace
func (c *MasterConfig) ensureDefaultNamespaceServiceAccountRoles() {
// Wait for the default namespace
var namespace *kapi.Namespace
for i := 0; i < 30; i++ {
ns, err := c.KubeClient().Namespaces().Get(kapi.NamespaceDefault)
if err == nil {
namespace = ns
break
}
if kapierror.IsNotFound(err) {
time.Sleep(time.Second)
continue
}
glog.Errorf("Error adding service account roles to %q namespace: %v", kapi.NamespaceDefault, err)
return
}
if namespace == nil {
glog.Errorf("Namespace %q not found, could not initialize the %q namespace", kapi.NamespaceDefault, kapi.NamespaceDefault)
return
}
c.ensureNamespaceServiceAccountRoleBindings(namespace)
}
// ensureNamespaceServiceAccountRoleBindings initializes roles for service accounts in the namespace
func (c *MasterConfig) ensureNamespaceServiceAccountRoleBindings(namespace *kapi.Namespace) {
const ServiceAccountRolesInitializedAnnotation = "openshift.io/sa.initialized-roles"
// Short-circuit if we're already initialized
if namespace.Annotations[ServiceAccountRolesInitializedAnnotation] == "true" {
return
}
hasErrors := false
for _, binding := range bootstrappolicy.GetBootstrapServiceAccountProjectRoleBindings(namespace.Name) {
addRole := &policy.RoleModificationOptions{
RoleName: binding.RoleRef.Name,
RoleNamespace: binding.RoleRef.Namespace,
RoleBindingAccessor: policy.NewLocalRoleBindingAccessor(namespace.Name, c.ServiceAccountRoleBindingClient()),
Subjects: binding.Subjects,
}
if err := kclient.RetryOnConflict(kclient.DefaultRetry, func() error { return addRole.AddRole() }); err != nil {
glog.Errorf("Could not add service accounts to the %v role in the %q namespace: %v\n", binding.RoleRef.Name, namespace.Name, err)
hasErrors = true
}
}
// If we had errors, don't register initialization so we can try again
if hasErrors {
return
}
if namespace.Annotations == nil {
namespace.Annotations = map[string]string{}
}
namespace.Annotations[ServiceAccountRolesInitializedAnnotation] = "true"
// Log any error other than a conflict (the update will be retried and recorded again on next startup in that case)
if _, err := c.KubeClient().Namespaces().Update(namespace); err != nil && !kapierror.IsConflict(err) {
glog.Errorf("Error recording adding service account roles to %q namespace: %v", namespace.Name, err)
}
}
func (c *MasterConfig) ensureDefaultSecurityContextConstraints() {
ns := c.Options.PolicyConfig.OpenShiftInfrastructureNamespace
bootstrapSCCGroups, bootstrapSCCUsers := bootstrappolicy.GetBoostrapSCCAccess(ns)
for _, scc := range bootstrappolicy.GetBootstrapSecurityContextConstraints(bootstrapSCCGroups, bootstrapSCCUsers) {
_, err := c.KubeClient().SecurityContextConstraints().Create(&scc)
if kapierror.IsAlreadyExists(err) {
continue
}
if err != nil {
glog.Errorf("Unable to create default security context constraint %s. Got error: %v", scc.Name, err)
continue
}
glog.Infof("Created default security context constraint %s", scc.Name)
}
}
// ensureComponentAuthorizationRules initializes the cluster policies
func (c *MasterConfig) ensureComponentAuthorizationRules() {
clusterPolicyRegistry := clusterpolicyregistry.NewRegistry(clusterpolicystorage.NewStorage(c.EtcdHelper))
ctx := kapi.WithNamespace(kapi.NewContext(), "")
if _, err := clusterPolicyRegistry.GetClusterPolicy(ctx, authorizationapi.PolicyName); kapierror.IsNotFound(err) {
glog.Infof("No cluster policy found. Creating bootstrap policy based on: %v", c.Options.PolicyConfig.BootstrapPolicyFile)
if err := admin.OverwriteBootstrapPolicy(c.EtcdHelper, c.Options.PolicyConfig.BootstrapPolicyFile, admin.CreateBootstrapPolicyFileFullCommand, true, ioutil.Discard); err != nil {
glog.Errorf("Error creating bootstrap policy: %v", err)
}
} else {
glog.V(2).Infof("Ignoring bootstrap policy file because cluster policy found")
}
// Wait until the policy cache has caught up before continuing
review := &authorizationapi.SubjectAccessReview{Action: authorizationapi.AuthorizationAttributes{Verb: "get", Resource: "clusterpolicies"}}
err := wait.PollImmediate(100*time.Millisecond, 30*time.Second, func() (done bool, err error) {
result, err := c.PolicyClient().SubjectAccessReviews().Create(review)
if err == nil && result.Allowed {
return true, nil
}
if kapierror.IsForbidden(err) || (err == nil && !result.Allowed) {
glog.V(2).Infof("waiting for policy cache to initialize")
return false, nil
}
return false, err
})
if err != nil {
glog.Errorf("error waiting for policy cache to initialize: %v", err)
}
}
// ensureCORSAllowedOrigins takes a string list of origins and attempts to covert them to CORS origin
// regexes, or exits if it cannot.
func (c *MasterConfig) ensureCORSAllowedOrigins() []*regexp.Regexp {
if len(c.Options.CORSAllowedOrigins) == 0 {
return []*regexp.Regexp{}
}
allowedOriginRegexps, err := util.CompileRegexps(c.Options.CORSAllowedOrigins)
if err != nil {
glog.Fatalf("Invalid --cors-allowed-origins: %v", err)
}
return allowedOriginRegexps
}