-
Notifications
You must be signed in to change notification settings - Fork 44
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
feat: use the code way to install core-dns
Signed-off-by: qiuwei <qiuwei_yewu@cmss.chinamobile.com>
- Loading branch information
Showing
15 changed files
with
600 additions
and
156 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,154 @@ | ||
| package coredns | ||
|
|
||
| import ( | ||
| "fmt" | ||
|
|
||
| "github.com/pkg/errors" | ||
| appsv1 "k8s.io/api/apps/v1" | ||
| v1 "k8s.io/api/core/v1" | ||
| "k8s.io/apimachinery/pkg/apis/meta/v1/unstructured" | ||
| "k8s.io/apimachinery/pkg/util/yaml" | ||
| "k8s.io/client-go/dynamic" | ||
| clientset "k8s.io/client-go/kubernetes" | ||
|
|
||
| "github.com/kosmos.io/kosmos/pkg/kubenest/manifest/controlplane/coredns/host" | ||
| "github.com/kosmos.io/kosmos/pkg/kubenest/manifest/controlplane/coredns/virtualcluster" | ||
| "github.com/kosmos.io/kosmos/pkg/kubenest/util" | ||
| ) | ||
|
|
||
| func EnsureHostCoreDns(client clientset.Interface, name, namespace string) error { | ||
|
|
||
| err := installCoreDnsConfigMap(client, namespace) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| err = EnsureCoreDnsRBAC(client, namespace, name) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| err = installCoreDnsDeployment(client, name, namespace) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func EnsureVirtualClusterCoreDns(dynamicClient dynamic.Interface, templateMapping map[string]interface{}) error { | ||
| err := installCoreDnsEndpointsInVirtualCluster(dynamicClient, templateMapping) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| err = installCoreDnsServiceInVirtualCluster(dynamicClient, templateMapping) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func installCoreDnsDeployment(client clientset.Interface, name, namespace string) error { | ||
| imageRepository, _ := util.GetImageMessage() | ||
| imageTag := util.GetCoreDnsImageTag() | ||
| coreDnsDeploymentBytes, err := util.ParseTemplate(host.CoreDnsDeployment, struct { | ||
| Namespace, Name, ImageRepository, CoreDNSImageTag string | ||
| }{ | ||
| Namespace: namespace, | ||
| Name: name, | ||
| ImageRepository: imageRepository, | ||
| CoreDNSImageTag: imageTag, | ||
| }) | ||
| if err != nil { | ||
| return fmt.Errorf("error when parsing core-dns deployment template: %w", err) | ||
| } | ||
| coreDnsDeployment := &appsv1.Deployment{} | ||
| if err := yaml.Unmarshal([]byte(coreDnsDeploymentBytes), coreDnsDeployment); err != nil { | ||
| return fmt.Errorf("error when decoding core-dns deployment: %w", err) | ||
| } | ||
|
|
||
| if err := util.CreateOrUpdateDeployment(client, coreDnsDeployment); err != nil { | ||
| return fmt.Errorf("error when creating deployment for %s, err: %w", coreDnsDeployment.Name, err) | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func getCoreDnsConfigMapManifest(namespace string) (*v1.ConfigMap, error) { | ||
| coreDnsConfigMapBytes, err := util.ParseTemplate(host.CoreDnsCM, struct { | ||
| Namespace string | ||
| }{ | ||
| Namespace: namespace, | ||
| }) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("error when parsing core-dns configMap template: %w", err) | ||
| } | ||
|
|
||
| config := &v1.ConfigMap{} | ||
| if err := yaml.Unmarshal([]byte(coreDnsConfigMapBytes), config); err != nil { | ||
| return nil, fmt.Errorf("err when decoding core-dns configMap: %w", err) | ||
| } | ||
|
|
||
| return config, nil | ||
| } | ||
|
|
||
| func installCoreDnsConfigMap(client clientset.Interface, namespace string) error { | ||
| config, err := getCoreDnsConfigMapManifest(namespace) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if err := util.CreateOrUpdateConfigMap(client, config); err != nil { | ||
| return fmt.Errorf("error when creating configMap for %s, err: %w", config.Name, err) | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func installCoreDnsServiceInVirtualCluster(dynamicClient dynamic.Interface, templateMapping map[string]interface{}) error { | ||
| coreDnsServiceInVcBytes, err := util.ParseTemplate(virtualcluster.CoreDnsService, templateMapping) | ||
| if err != nil { | ||
| return fmt.Errorf("error when parsing core-dns service in virtual cluster template: %w", err) | ||
| } | ||
| var obj unstructured.Unstructured | ||
| if err := yaml.Unmarshal([]byte(coreDnsServiceInVcBytes), &obj); err != nil { | ||
| return fmt.Errorf("err when decoding core-dns service in virtual cluster: %w", err) | ||
| } | ||
|
|
||
| err = util.CreateObject(dynamicClient, obj.GetNamespace(), obj.GetName(), &obj) | ||
| if err != nil { | ||
| return fmt.Errorf("error when creating core-dns service in virtual cluster err: %w", err) | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func installCoreDnsEndpointsInVirtualCluster(dynamicClient dynamic.Interface, templateMapping map[string]interface{}) error { | ||
| coreDnsEndpointsInVcBytes, err := util.ParseTemplate(virtualcluster.CoreDnsEndpoints, templateMapping) | ||
| if err != nil { | ||
| return fmt.Errorf("error when parsing core-dns service in virtual cluster template: %w", err) | ||
| } | ||
| var obj unstructured.Unstructured | ||
| if err := yaml.Unmarshal([]byte(coreDnsEndpointsInVcBytes), &obj); err != nil { | ||
| return fmt.Errorf("err when decoding core-dns service in virtual cluster: %w", err) | ||
| } | ||
|
|
||
| err = util.CreateObject(dynamicClient, obj.GetNamespace(), obj.GetName(), &obj) | ||
| if err != nil { | ||
| return fmt.Errorf("error when creating core-dns service in virtual cluster err: %w", err) | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func DeleteCoreDnsDeployment(client clientset.Interface, name, namespace string) error { | ||
| // delete deployment | ||
| deployName := fmt.Sprintf("%s-%s", name, "coredns") | ||
| if err := util.DeleteDeployment(client, deployName, namespace); err != nil { | ||
| return errors.Wrapf(err, "Failed to delete deployment %s/%s", deployName, namespace) | ||
| } | ||
|
|
||
| // delete configmap | ||
| cmName := "coredns" | ||
| if err := util.DeleteConfigmap(client, cmName, namespace); err != nil { | ||
| return errors.Wrapf(err, "Failed to delete configmap %s/%s", cmName, namespace) | ||
| } | ||
|
|
||
| return nil | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,77 @@ | ||
| package coredns | ||
|
|
||
| import ( | ||
| "fmt" | ||
|
|
||
| v1 "k8s.io/api/core/v1" | ||
| rbacv1 "k8s.io/api/rbac/v1" | ||
| "k8s.io/apimachinery/pkg/util/yaml" | ||
| clientset "k8s.io/client-go/kubernetes" | ||
|
|
||
| "github.com/kosmos.io/kosmos/pkg/kubenest/manifest/controlplane/coredns/host" | ||
| "github.com/kosmos.io/kosmos/pkg/kubenest/util" | ||
| ) | ||
|
|
||
| func EnsureCoreDnsRBAC(client clientset.Interface, namespace string, name string) error { | ||
| if err := grantCoreDnsClusterSA(client, namespace); err != nil { | ||
| return err | ||
| } | ||
| if err := grantCoreDnsClusterRoleBinding(client, namespace, name); err != nil { | ||
| return err | ||
| } | ||
| if err := grantCoreDnsClusterRole(client, name); err != nil { | ||
| return err | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func grantCoreDnsClusterSA(client clientset.Interface, namespace string) error { | ||
| coreDnsClusterSABytes, err := util.ParseTemplate(host.CoreDnsSA, struct { | ||
| Namespace string | ||
| }{ | ||
| Namespace: namespace, | ||
| }) | ||
| if err != nil { | ||
| return fmt.Errorf("error when parsing core-dns sa template: %w", err) | ||
| } | ||
| serviceAccount := &v1.ServiceAccount{} | ||
| if err := yaml.Unmarshal([]byte(coreDnsClusterSABytes), serviceAccount); err != nil { | ||
| return fmt.Errorf("err when decoding core-dns view Clusterrole: %w", err) | ||
| } | ||
| return util.CreateOrUpdateClusterSA(client, serviceAccount, namespace) | ||
| } | ||
|
|
||
| func grantCoreDnsClusterRoleBinding(client clientset.Interface, namespace string, name string) error { | ||
| coreDnsClusterRoleBindingBytes, err := util.ParseTemplate(host.CoreDnsClusterRoleBinding, struct { | ||
| Name string | ||
| Namespace string | ||
| }{ | ||
| Name: name, | ||
| Namespace: namespace, | ||
| }) | ||
| if err != nil { | ||
| return fmt.Errorf("error when parsing core-dns role binding template: %w", err) | ||
| } | ||
| viewClusterRoleBinding := &rbacv1.ClusterRoleBinding{} | ||
|
|
||
| if err := yaml.Unmarshal([]byte(coreDnsClusterRoleBindingBytes), viewClusterRoleBinding); err != nil { | ||
| return fmt.Errorf("err when decoding core-dns Clusterrole Binding: %w", err) | ||
| } | ||
| return util.CreateOrUpdateClusterRoleBinding(client, viewClusterRoleBinding) | ||
| } | ||
|
|
||
| func grantCoreDnsClusterRole(client clientset.Interface, name string) error { | ||
| viewClusterRole := &rbacv1.ClusterRole{} | ||
| coreDnsClusterRoleBytes, err := util.ParseTemplate(host.CoreDnsClusterRole, struct { | ||
| Name string | ||
| }{ | ||
| Name: name, | ||
| }) | ||
| if err != nil { | ||
| return fmt.Errorf("error when parsing core-dns cluster role template: %w", err) | ||
| } | ||
| if err := yaml.Unmarshal([]byte(coreDnsClusterRoleBytes), viewClusterRole); err != nil { | ||
| return fmt.Errorf("err when decoding core-dns Clusterrole: %w", err) | ||
| } | ||
| return util.CreateOrUpdateClusterRole(client, viewClusterRole) | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
34 changes: 34 additions & 0 deletions
34
pkg/kubenest/manifest/controlplane/coredns/host/manifest_configmap.go
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,34 @@ | ||
| package host | ||
|
|
||
| const ( | ||
| CoreDnsCM = ` | ||
| apiVersion: v1 | ||
| data: | ||
| Corefile: | | ||
| .:53 { | ||
| errors | ||
| health { | ||
| lameduck 5s | ||
| } | ||
| ready | ||
| kubernetes cluster.local in-addr.arpa ip6.arpa { | ||
| pods insecure | ||
| fallthrough in-addr.arpa ip6.arpa | ||
| ttl 30 | ||
| kubeconfig /etc/apiserver/kubeconfig | ||
| } | ||
| prometheus :9153 | ||
| forward . /etc/resolv.conf { | ||
| max_concurrent 1000 | ||
| } | ||
| cache 30 | ||
| loop | ||
| reload | ||
| loadbalance | ||
| } | ||
| kind: ConfigMap | ||
| metadata: | ||
| name: coredns | ||
| namespace: {{ .Namespace }} | ||
| ` | ||
| ) |
Oops, something went wrong.