mirror of https://github.com/kubernetes/kops.git
107 lines
2.9 KiB
Go
107 lines
2.9 KiB
Go
/*
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Copyright 2019 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package gcemodel
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import (
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"fmt"
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"k8s.io/apimachinery/pkg/util/sets"
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"k8s.io/klog/v2"
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"k8s.io/kops/pkg/apis/kops"
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"k8s.io/kops/pkg/featureflag"
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"k8s.io/kops/pkg/model/iam"
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"k8s.io/kops/upup/pkg/fi"
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"k8s.io/kops/upup/pkg/fi/cloudup/gce"
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"k8s.io/kops/upup/pkg/fi/cloudup/gcetasks"
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"k8s.io/kops/util/pkg/vfs"
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)
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// StorageAclBuilder configures storage acls
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type StorageAclBuilder struct {
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*GCEModelContext
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Cloud gce.GCECloud
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Lifecycle *fi.Lifecycle
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}
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var _ fi.ModelBuilder = &NetworkModelBuilder{}
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// Build creates the tasks that set up storage acls
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func (b *StorageAclBuilder) Build(c *fi.ModelBuilderContext) error {
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serviceAccount, err := b.Cloud.ServiceAccount()
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if err != nil {
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return fmt.Errorf("error fetching ServiceAccount: %v", err)
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}
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if featureflag.GoogleCloudBucketACL.Enabled() {
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clusterPath := b.Cluster.Spec.ConfigBase
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p, err := vfs.Context.BuildVfsPath(clusterPath)
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if err != nil {
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return fmt.Errorf("cannot parse cluster path %q: %v", clusterPath, err)
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}
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switch p := p.(type) {
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case *vfs.GSPath:
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// It's not ideal that we have to do this at the bucket level,
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// but GCS doesn't seem to have a way to do subtrees (like AWS IAM does)
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// Note this permission only lets us list objects, not read them
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c.AddTask(&gcetasks.StorageBucketAcl{
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Name: s("serviceaccount-statestore-list"),
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Lifecycle: b.Lifecycle,
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Bucket: s(p.Bucket()),
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Entity: s("user-" + serviceAccount),
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Role: s("READER"),
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})
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}
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klog.Warningf("we need to split master / node roles")
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nodeRole, err := iam.BuildNodeRoleSubject(kops.InstanceGroupRoleMaster)
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if err != nil {
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return err
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}
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writeablePaths, err := iam.WriteableVFSPaths(b.Cluster, nodeRole)
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if err != nil {
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return err
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}
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buckets := sets.NewString()
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for _, p := range writeablePaths {
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if gcsPath, ok := p.(*vfs.GSPath); ok {
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bucket := gcsPath.Bucket()
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if buckets.Has(bucket) {
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continue
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}
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klog.Warningf("adding bucket level write ACL to gs://%s to support etcd backup", bucket)
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c.AddTask(&gcetasks.StorageBucketAcl{
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Name: s("serviceaccount-backup-readwrite-" + bucket),
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Lifecycle: b.Lifecycle,
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Bucket: s(bucket),
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Entity: s("user-" + serviceAccount),
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Role: s("WRITER"),
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})
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buckets.Insert(bucket)
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} else {
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klog.Warningf("unknown path, can't apply IAM policy: %q", p)
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}
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}
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}
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return nil
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}
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