mirror of https://github.com/kubernetes/kops.git
122 lines
4.0 KiB
Go
122 lines
4.0 KiB
Go
/*
|
|
Copyright 2016 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package model
|
|
|
|
import (
|
|
"github.com/golang/glog"
|
|
"k8s.io/kops/pkg/apis/kops"
|
|
"k8s.io/kops/upup/pkg/fi"
|
|
"k8s.io/kops/upup/pkg/fi/cloudup/awstasks"
|
|
)
|
|
|
|
// ExternalAccessModelBuilder configures security group rules for external access
|
|
// (SSHAccess, KubernetesAPIAccess)
|
|
type ExternalAccessModelBuilder struct {
|
|
*KopsModelContext
|
|
Lifecycle *fi.Lifecycle
|
|
}
|
|
|
|
var _ fi.ModelBuilder = &ExternalAccessModelBuilder{}
|
|
|
|
func (b *ExternalAccessModelBuilder) Build(c *fi.ModelBuilderContext) error {
|
|
if len(b.Cluster.Spec.KubernetesAPIAccess) == 0 {
|
|
glog.Warningf("KubernetesAPIAccess is empty")
|
|
}
|
|
|
|
if len(b.Cluster.Spec.SSHAccess) == 0 {
|
|
glog.Warningf("SSHAccess is empty")
|
|
}
|
|
|
|
// SSH is open to AdminCIDR set
|
|
if b.UsesSSHBastion() {
|
|
// If we are using a bastion, we only access through the bastion
|
|
// This is admittedly a little odd... adding a bastion shuts down direct access to the masters/nodes
|
|
// But I think we can always add more permissions in this case later, but we can't easily take them away
|
|
glog.V(2).Infof("bastion is in use; won't configure SSH access to master / node instances")
|
|
} else {
|
|
for _, sshAccess := range b.Cluster.Spec.SSHAccess {
|
|
c.AddTask(&awstasks.SecurityGroupRule{
|
|
Name: s("ssh-external-to-master-" + sshAccess),
|
|
Lifecycle: b.Lifecycle,
|
|
SecurityGroup: b.LinkToSecurityGroup(kops.InstanceGroupRoleMaster),
|
|
Protocol: s("tcp"),
|
|
FromPort: i64(22),
|
|
ToPort: i64(22),
|
|
CIDR: s(sshAccess),
|
|
})
|
|
|
|
c.AddTask(&awstasks.SecurityGroupRule{
|
|
Name: s("ssh-external-to-node-" + sshAccess),
|
|
Lifecycle: b.Lifecycle,
|
|
SecurityGroup: b.LinkToSecurityGroup(kops.InstanceGroupRoleNode),
|
|
Protocol: s("tcp"),
|
|
FromPort: i64(22),
|
|
ToPort: i64(22),
|
|
CIDR: s(sshAccess),
|
|
})
|
|
}
|
|
}
|
|
|
|
for _, nodePortAccess := range b.Cluster.Spec.NodePortAccess {
|
|
nodePortRange, err := b.NodePortRange()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
c.AddTask(&awstasks.SecurityGroupRule{
|
|
Name: s("nodeport-tcp-external-to-node-" + nodePortAccess),
|
|
Lifecycle: b.Lifecycle,
|
|
SecurityGroup: b.LinkToSecurityGroup(kops.InstanceGroupRoleNode),
|
|
Protocol: s("tcp"),
|
|
FromPort: i64(int64(nodePortRange.Base)),
|
|
ToPort: i64(int64(nodePortRange.Base + nodePortRange.Size - 1)),
|
|
CIDR: s(nodePortAccess),
|
|
})
|
|
c.AddTask(&awstasks.SecurityGroupRule{
|
|
Name: s("nodeport-udp-external-to-node-" + nodePortAccess),
|
|
Lifecycle: b.Lifecycle,
|
|
SecurityGroup: b.LinkToSecurityGroup(kops.InstanceGroupRoleNode),
|
|
Protocol: s("udp"),
|
|
FromPort: i64(int64(nodePortRange.Base)),
|
|
ToPort: i64(int64(nodePortRange.Base + nodePortRange.Size - 1)),
|
|
CIDR: s(nodePortAccess),
|
|
})
|
|
}
|
|
|
|
if !b.UseLoadBalancerForAPI() {
|
|
// Configuration for the master, when not using a Loadbalancer (ELB)
|
|
// We expect that either the IP address is published, or DNS is set up to point to the IPs
|
|
// We need to open security groups directly to the master nodes (instead of via the ELB)
|
|
|
|
// HTTPS to the master is allowed (for API access)
|
|
for _, apiAccess := range b.Cluster.Spec.KubernetesAPIAccess {
|
|
t := &awstasks.SecurityGroupRule{
|
|
Name: s("https-external-to-master-" + apiAccess),
|
|
Lifecycle: b.Lifecycle,
|
|
SecurityGroup: b.LinkToSecurityGroup(kops.InstanceGroupRoleMaster),
|
|
Protocol: s("tcp"),
|
|
FromPort: i64(443),
|
|
ToPort: i64(443),
|
|
CIDR: s(apiAccess),
|
|
}
|
|
c.AddTask(t)
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|