forked from kubernetes/kops
/
firewall.go
92 lines (77 loc) · 2.43 KB
/
firewall.go
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/*
Copyright 2018 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 alimodel
import (
"k8s.io/kops/pkg/apis/kops"
"k8s.io/kops/upup/pkg/fi"
"k8s.io/kops/upup/pkg/fi/cloudup/alitasks"
)
const IpProtocolAll = "all"
// FirewallModelBuilder configures firewall network objects
type FirewallModelBuilder struct {
*ALIModelContext
Lifecycle *fi.Lifecycle
}
var _ fi.ModelBuilder = &FirewallModelBuilder{}
func (b *FirewallModelBuilder) Build(c *fi.ModelBuilderContext) error {
// Create nodeInstances security group
var nodeSecurityGroup *alitasks.SecurityGroup
{
groupName := b.GetNameForSecurityGroup(kops.InstanceGroupRoleNode)
nodeSecurityGroup = &alitasks.SecurityGroup{
Name: s(groupName),
Lifecycle: b.Lifecycle,
VPC: b.LinkToVPC(),
}
c.AddTask(nodeSecurityGroup)
}
// Create masterInstances security group
var masterSecurityGroup *alitasks.SecurityGroup
{
groupName := b.GetNameForSecurityGroup(kops.InstanceGroupRoleMaster)
masterSecurityGroup = &alitasks.SecurityGroup{
Name: s(groupName),
Lifecycle: b.Lifecycle,
VPC: b.LinkToVPC(),
}
c.AddTask(masterSecurityGroup)
}
// Allow traffic from masters to nodes
ipProtocolAll := IpProtocolAll
{
nodeSecurityGroupRules := &alitasks.SecurityGroupRule{
Name: s("node-to-master"),
Lifecycle: b.Lifecycle,
IpProtocol: s(ipProtocolAll),
SecurityGroup: nodeSecurityGroup,
SourceGroup: masterSecurityGroup,
PortRange: s("-1/-1"),
In: fi.Bool(true),
}
c.AddTask(nodeSecurityGroupRules)
}
// Allow traffic from nodes to masters
{
masterSecurityGroupRules := &alitasks.SecurityGroupRule{
Name: s("node-master"),
Lifecycle: b.Lifecycle,
IpProtocol: s(ipProtocolAll),
SecurityGroup: masterSecurityGroup,
SourceGroup: nodeSecurityGroup,
PortRange: s("-1/-1"),
In: fi.Bool(true),
}
c.AddTask(masterSecurityGroupRules)
}
return nil
}