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ensure.go
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ensure.go
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package origin
import (
"io/ioutil"
"regexp"
"time"
"github.com/golang/glog"
kapi "github.com/GoogleCloudPlatform/kubernetes/pkg/api"
kapierror "github.com/GoogleCloudPlatform/kubernetes/pkg/api/errors"
"github.com/GoogleCloudPlatform/kubernetes/pkg/fields"
"github.com/GoogleCloudPlatform/kubernetes/pkg/labels"
"github.com/GoogleCloudPlatform/kubernetes/pkg/serviceaccount"
"github.com/GoogleCloudPlatform/kubernetes/pkg/util"
"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 := &kapi.Namespace{
ObjectMeta: kapi.ObjectMeta{Name: c.Options.PolicyConfig.OpenShiftSharedResourcesNamespace},
}
_, err = c.KubeClient().Namespaces().Create(namespace)
if err != nil {
glog.Errorf("Error creating namespace: %v due to %v\n", namespace, err)
}
}
}
// 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
_, err := c.KubeClient().Namespaces().Create(&kapi.Namespace{ObjectMeta: kapi.ObjectMeta{Name: ns}})
if err != nil && !kapierror.IsAlreadyExists(err) {
glog.Errorf("Error creating namespace %s: %v", ns, err)
}
// Ensure service accounts exist
serviceAccounts := []string{c.BuildControllerServiceAccount, c.DeploymentControllerServiceAccount, c.ReplicationControllerServiceAccount}
for _, serviceAccountName := range serviceAccounts {
_, err := c.KubeClient().ServiceAccounts(ns).Create(&kapi.ServiceAccount{ObjectMeta: kapi.ObjectMeta{Name: serviceAccountName}})
if err != nil && !kapierror.IsAlreadyExists(err) {
glog.Errorf("Error creating service account %s/%s: %v", ns, serviceAccountName, err)
}
}
// Ensure service account cluster role bindings exist
clusterRolesToUsernames := map[string][]string{
bootstrappolicy.BuildControllerRoleName: {serviceaccount.MakeUsername(ns, c.BuildControllerServiceAccount)},
bootstrappolicy.DeploymentControllerRoleName: {serviceaccount.MakeUsername(ns, c.DeploymentControllerServiceAccount)},
bootstrappolicy.ReplicationControllerRoleName: {serviceaccount.MakeUsername(ns, c.ReplicationControllerServiceAccount)},
}
roleAccessor := policy.NewClusterRoleBindingAccessor(c.ServiceAccountRoleBindingClient())
for clusterRole, usernames := range clusterRolesToUsernames {
addRole := &policy.RoleModificationOptions{
RoleName: clusterRole,
RoleBindingAccessor: roleAccessor,
Users: usernames,
}
if err := addRole.AddRole(); err != nil {
glog.Errorf("Could not add %v users to the %v cluster role: %v\n", ns, usernames, clusterRole, err)
} else {
glog.V(2).Infof("Added %v users to the %v cluster role: %v\n", usernames, clusterRole, err)
}
}
}
// 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")
}
}
// ensureDefaultNamespaceServiceAccountRoles initializes roles for service accounts in the default namespace
func (c *MasterConfig) ensureDefaultNamespaceServiceAccountRoles() {
const ServiceAccountRolesInitializedAnnotation = "openshift.io/sa.initialized-roles"
// Wait for the default namespace
var defaultNamespace *kapi.Namespace
for i := 0; i < 30; i++ {
ns, err := c.KubeClient().Namespaces().Get(kapi.NamespaceDefault)
if err == nil {
defaultNamespace = ns
break
}
if kapierror.IsNotFound(err) {
time.Sleep(time.Second)
continue
}
glog.Errorf("Error adding service account roles to default namespace: %v", err)
return
}
if defaultNamespace == nil {
glog.Errorf("Default namespace not found, could not initialize default service account roles")
return
}
// Short-circuit if we're already initialized
if defaultNamespace.Annotations[ServiceAccountRolesInitializedAnnotation] == "true" {
return
}
hasErrors := false
for _, binding := range bootstrappolicy.GetBootstrapServiceAccountProjectRoleBindings(kapi.NamespaceDefault) {
addRole := &policy.RoleModificationOptions{
RoleName: binding.RoleRef.Name,
RoleNamespace: binding.RoleRef.Namespace,
RoleBindingAccessor: policy.NewLocalRoleBindingAccessor(kapi.NamespaceDefault, c.ServiceAccountRoleBindingClient()),
Users: binding.Users.List(),
Groups: binding.Groups.List(),
}
if err := addRole.AddRole(); err != nil {
glog.Errorf("Could not add service accounts to the %v role in the %v namespace: %v\n", binding.RoleRef.Name, kapi.NamespaceDefault, err)
hasErrors = true
}
}
// If we had errors, don't register initialization so we can try again
if !hasErrors {
if defaultNamespace.Annotations == nil {
defaultNamespace.Annotations = map[string]string{}
}
defaultNamespace.Annotations[ServiceAccountRolesInitializedAnnotation] = "true"
if _, err := c.KubeClient().Namespaces().Update(defaultNamespace); err != nil {
glog.Errorf("Error recording adding service account roles to default namespace: %v", err)
}
}
}
func (c *MasterConfig) ensureDefaultSecurityContextConstraints() {
sccList, err := c.KubeClient().SecurityContextConstraints().List(labels.Everything(), fields.Everything())
if err != nil {
glog.Errorf("Unable to initialize security context constraints: %v", err)
}
if len(sccList.Items) > 0 {
return
}
glog.Infof("No security context constraints detected, adding defaults")
ns := c.Options.PolicyConfig.OpenShiftInfrastructureNamespace
buildControllerUsername := serviceaccount.MakeUsername(ns, c.BuildControllerServiceAccount)
for _, scc := range bootstrappolicy.GetBootstrapSecurityContextConstraints(buildControllerUsername) {
_, err = c.KubeClient().SecurityContextConstraints().Create(&scc)
if err != nil {
glog.Errorf("Unable to create default security context constraint %s. Got error: %v", scc.Name, 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(util.StringList(c.Options.CORSAllowedOrigins))
if err != nil {
glog.Fatalf("Invalid --cors-allowed-origins: %v", err)
}
return allowedOriginRegexps
}