00a0fe9602
This change doesn't affect the execution of the code, but rather focuses on fixing various nits and improving readability. Change-Id: I4153a17787ca45dcd6d8eb6da894c0b651066411
113 lines
3.4 KiB
Go
113 lines
3.4 KiB
Go
/*
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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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https://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 services
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import (
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"fmt"
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airshipv1 "sipcluster/pkg/api/v1"
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airshipvms "sipcluster/pkg/vbmh"
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"sigs.k8s.io/controller-runtime/pkg/client"
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)
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type LoadBalancer struct {
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Service
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}
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func (l *LoadBalancer) Deploy(sip airshipv1.SIPCluster, machines *airshipvms.MachineList, c client.Client) error {
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// Take the data from the appropriate Machines
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// Prepare the Config
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err := l.Service.Deploy(sip, machines, c)
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if err != nil {
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return err
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}
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return l.Prepare(sip, machines, c)
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}
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func (l *LoadBalancer) Prepare(sip airshipv1.SIPCluster, machines *airshipvms.MachineList, c client.Client) error {
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fmt.Printf("%s.Prepare machines:%s \n", l.Service.serviceName, machines)
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for _, machine := range machines.Machines {
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if machine.VMRole == airshipv1.VMMaster {
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ip := machine.Data.IPOnInterface[sip.Spec.InfraServices[l.Service.serviceName].NodeInterface]
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fmt.Printf("%s.Prepare for machine:%s ip is %s\n", l.Service.serviceName, machine, ip)
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}
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}
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return nil
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}
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func newLoadBalancer(infraCfg airshipv1.InfraConfig) InfrastructureService {
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return &LoadBalancer{
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Service: Service{
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serviceName: airshipv1.LoadBalancerService,
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config: infraCfg,
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},
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}
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}
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/*
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:::warning
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For the loadbalanced interface a **static asignment** via network data is
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required. For now, we will not support updates to this field without manual
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intervention. In other words, there is no expectation that the SIP operator
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watches `BareMetalHost` objects and reacts to changes in the future. The
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expectation would instead to re-deliver the `SIPCluster` object to force a
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no-op update to load balancer configuration is updated.
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:::
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By extracting these IP address from the appropriate/defined interface for each
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master node, we can build our loadbalancer service endpoint list to feed to
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haproxy. In other words, the SIP Cluster will now manufacture an haproxy
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configuration file that directs traffic to all IP endpoints found above over
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port 6443. For example:
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``` gotpl
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global
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log /dev/stdout local0
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log /dev/stdout local1 notice
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daemon
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defaults
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log global
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mode tcp
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option dontlognull
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# TODO: tune these
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timeout connect 5000
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timeout client 50000
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timeout server 50000
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frontend control-plane
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bind *:6443
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default_backend kube-apiservers
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backend kube-apiservers
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option httpchk GET /healthz
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{% for i in range(1, number_masters) %}
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server {{ cluster_name }}-{{ i }} {{ vm_master_ip }}:6443 check check-ssl verify none
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{% end %}
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```
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This will be saved as a configmap and mounted into the cluster specific haproxy
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daemonset across all undercloud control nodes.
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We will then create a Kubernetes NodePort `Service` that will direct traffic on
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the infrastructure `nodePort` defined in the SIP Cluster definition to these
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haproxy workloads.
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At this point, the SIP Cluster controller can now label the VMs appropriately
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so they'll be scheduled by the Cluster-API process.
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*/
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