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Code Issues Releases Wiki Activity

add support for specifc control plane IP per host

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This commit is contained in:
moelsayed 2017-10-31 13:39:21 +02:00 committed by galal-hussein
parent cdb956d363
commit 5b730bcf6a
6 changed files with 26 additions and 15 deletions
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2
cluster.yml
View File

@ -5,10 +5,12 @@ hosts:
user: ubuntu
role: [controlplane, etcd]
docker_socket: /var/run/docker.sock
control_plane_ip: 10.1.1.1
- hostname: server2
ip: 2.2.2.2
user: ubuntu
role: [worker]
control_plane_ip: 10.2.2.2
services:
etcd:

5
cmd/cluster.go
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@ -122,6 +122,11 @@ func parseClusterFile(clusterFile string) (*services.Container, []hosts.Host, er
return nil, nil, fmt.Errorf("User for host (%d) is not provided", i+1)
} else if len(host.Role) == 0 {
return nil, nil, fmt.Errorf("Role for host (%d) is not provided", i+1)
} else if host.ControlPlaneIP == "" {
// if control_plane_ip is not set,
// default to the main IP
host.ControlPlaneIP = host.IP
}
for _, role := range host.Role {
if role != services.ETCDRole && role != services.ControlRole && role != services.WorkerRole {

13
hosts/hosts.go
View File

@ -10,12 +10,13 @@ type Hosts struct {
}
type Host struct {
IP string `yaml:"ip"`
Role []string `yaml:"role"`
Hostname string `yaml:"hostname"`
User string `yaml:"user"`
DockerSocket string `yaml:"docker_socket"`
DClient *client.Client
IP string `yaml:"ip"`
ControlPlaneIP string `yaml:"control_plane_ip"`
Role []string `yaml:"role"`
Hostname string `yaml:"hostname"`
User string `yaml:"user"`
DockerSocket string `yaml:"docker_socket"`
DClient *client.Client
}
func DivideHosts(hosts []Host) ([]Host, []Host, []Host) {

11
pki/pki.go
View File

@ -74,7 +74,7 @@ func generateCerts(cpHosts []hosts.Host, clusterDomain string, KubernetesService
certs[KubeControllerName] = CertificatePKI{
certificate: kubeControllerCrt,
key: kubeControllerKey,
config: getKubeConfigX509("https://"+cpHosts[0].IP+":6443", KubeControllerName, CACertPath, KubeControllerCertPath, KubeControllerKeyPath),
config: getKubeConfigX509("https://"+cpHosts[0].ControlPlaneIP+":6443", KubeControllerName, CACertPath, KubeControllerCertPath, KubeControllerKeyPath),
}
// generate Kube scheduler certificate and key
@ -87,7 +87,7 @@ func generateCerts(cpHosts []hosts.Host, clusterDomain string, KubernetesService
certs[KubeSchedulerName] = CertificatePKI{
certificate: kubeSchedulerCrt,
key: kubeSchedulerKey,
config: getKubeConfigX509("https://"+cpHosts[0].IP+":6443", KubeSchedulerName, CACertPath, KubeSchedulerCertPath, KubeSchedulerKeyPath),
config: getKubeConfigX509("https://"+cpHosts[0].ControlPlaneIP+":6443", KubeSchedulerName, CACertPath, KubeSchedulerCertPath, KubeSchedulerKeyPath),
}
// generate Kube Proxy certificate and key
@ -100,7 +100,7 @@ func generateCerts(cpHosts []hosts.Host, clusterDomain string, KubernetesService
certs[KubeProxyName] = CertificatePKI{
certificate: kubeProxyCrt,
key: kubeProxyKey,
config: getKubeConfigX509("https://"+cpHosts[0].IP+":6443", KubeProxyName, CACertPath, KubeProxyCertPath, KubeProxyKeyPath),
config: getKubeConfigX509("https://"+cpHosts[0].ControlPlaneIP+":6443", KubeProxyName, CACertPath, KubeProxyCertPath, KubeProxyKeyPath),
}
logrus.Infof("[certificates] Generating Node certificate")
@ -112,7 +112,7 @@ func generateCerts(cpHosts []hosts.Host, clusterDomain string, KubernetesService
certs[KubeNodeName] = CertificatePKI{
certificate: nodeCrt,
key: nodeKey,
config: getKubeConfigX509("https://"+cpHosts[0].IP+":6443", KubeNodeName, CACertPath, KubeNodeCertPath, KubeNodeKeyPath),
config: getKubeConfigX509("https://"+cpHosts[0].ControlPlaneIP+":6443", KubeNodeName, CACertPath, KubeNodeCertPath, KubeNodeKeyPath),
}
return certs, nil
}
@ -174,6 +174,9 @@ func getAltNames(cpHosts []hosts.Host, clusterDomain string, KubernetesServiceIP
dnsNames := []string{}
for _, host := range cpHosts {
ips = append(ips, net.ParseIP(host.IP))
if host.IP != host.ControlPlaneIP {
ips = append(ips, net.ParseIP(host.ControlPlaneIP))
}
dnsNames = append(dnsNames, host.Hostname)
}
ips = append(ips, net.ParseIP("127.0.0.1"))

8
services/etcd.go
View File

@ -32,12 +32,12 @@ func buildEtcdConfig(host hosts.Host, etcdService Etcd) (*container.Config, *con
Cmd: []string{"/usr/local/bin/etcd",
"--name=etcd-" + host.Hostname,
"--data-dir=/etcd-data",
"--advertise-client-urls=http://" + host.IP + ":2379,http://" + host.IP + ":4001",
"--advertise-client-urls=http://" + host.ControlPlaneIP + ":2379,http://" + host.ControlPlaneIP + ":4001",
"--listen-client-urls=http://0.0.0.0:2379",
"--initial-advertise-peer-urls=http://" + host.IP + ":2380",
"--initial-advertise-peer-urls=http://" + host.ControlPlaneIP + ":2380",
"--listen-peer-urls=http://0.0.0.0:2380",
"--initial-cluster-token=etcd-cluster-1",
"--initial-cluster=etcd-" + host.Hostname + "=http://" + host.IP + ":2380"},
"--initial-cluster=etcd-" + host.Hostname + "=http://" + host.ControlPlaneIP + ":2380"},
}
hostCfg := &container.HostConfig{
RestartPolicy: container.RestartPolicy{Name: "always"},
@ -64,7 +64,7 @@ func buildEtcdConfig(host hosts.Host, etcdService Etcd) (*container.Config, *con
func getEtcdConnString(hosts []hosts.Host) string {
connString := ""
for i, host := range hosts {
connString += "http://" + host.IP + ":2379"
connString += "http://" + host.ControlPlaneIP + ":2379"
if i < (len(hosts) - 1) {
connString += ","
}

2
services/kubeapi.go
View File

@ -39,7 +39,7 @@ func buildKubeAPIConfig(host hosts.Host, kubeAPIService KubeAPI, etcdConnString
"--runtime-config=authentication.k8s.io/v1beta1=true",
"--storage-backend=etcd3",
"--etcd-servers=" + etcdConnString,
"--advertise-address=" + host.IP,
"--advertise-address=" + host.ControlPlaneIP,
"--client-ca-file=" + pki.CACertPath,
"--tls-cert-file=" + pki.KubeAPICertPath,
"--tls-private-key-file=" + pki.KubeAPIKeyPath,