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Merge pull request #121 from flant/multiple-lb 

Add ability to specify multiple --ovpn.service
This commit is contained in:
vitaliy-sn 2022-04-27 15:29:27 +03:00 committed by GitHub
parent cd746c20b5 47abe3bc1a
commit 99569daf31
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2 changed files with 24 additions and 19 deletions
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2
Dockerfile
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@ -11,7 +11,7 @@ RUN cd /app && packr2 && env CGO_ENABLED=1 GOOS=linux GOARCH=amd64 go build -a -
FROM alpine:3.14
WORKDIR /app
COPY --from=backend-builder /app/ovpn-admin /app
RUN apk add --update bash easy-rsa && \
RUN apk add --update bash easy-rsa openssl openvpn && \
ln -s /usr/share/easy-rsa/easyrsa /usr/local/bin && \
wget https://github.com/pashcovich/openvpn-user/releases/download/v1.0.3/openvpn-user-linux-amd64.tar.gz -O - | tar xz -C /usr/local/bin && \
rm -rf /tmp/* /var/tmp/* /var/cache/apk/* /var/cache/distfiles/*

41
main.go
View File

@ -55,7 +55,7 @@ var (
openvpnNetwork = kingpin.Flag("ovpn.network", "NETWORK/MASK_PREFIX for OpenVPN server").Default("172.16.100.0/24").Envar("OVPN_NETWORK").String()
openvpnServer = kingpin.Flag("ovpn.server", "HOST:PORT:PROTOCOL for OpenVPN server; can have multiple values").Default("127.0.0.1:7777:tcp").Envar("OVPN_SERVER").PlaceHolder("HOST:PORT:PROTOCOL").Strings()
openvpnServerBehindLB = kingpin.Flag("ovpn.server.behindLB", "enable if your OpenVPN server is behind Kubernetes Service having the LoadBalancer type").Default("false").Envar("OVPN_LB").Bool()
openvpnServiceName = kingpin.Flag("ovpn.service", "the name of Kubernetes Service having the LoadBalancer type if your OpenVPN server is behind it").Default("openvpn-external").Envar("OVPN_LB_SERVICE").String()
openvpnServiceName = kingpin.Flag("ovpn.service", "the name of Kubernetes Service having the LoadBalancer type if your OpenVPN server is behind it").Default("openvpn-external").Envar("OVPN_LB_SERVICE").Strings()
mgmtAddress = kingpin.Flag("mgmt", "ALIAS=HOST:PORT for OpenVPN server mgmt interface; can have multiple values").Default("main=127.0.0.1:8989").Envar("OVPN_MGMT").Strings()
metricsPath = kingpin.Flag("metrics.path", "URL path for exposing collected metrics").Default("/metrics").Envar("OVPN_METRICS_PATH").String()
easyrsaDirPath = kingpin.Flag("easyrsa.path", "path to easyrsa dir").Default("./easyrsa").Envar("EASYRSA_PATH").String()
@ -1304,28 +1304,33 @@ func getOvpnServerHostsFromKubeApi() ([]OpenvpnServer, error) {
log.Errorf("%s", err.Error())
}
service, err := clientset.CoreV1().Services(fRead(kubeNamespaceFilePath)).Get(context.TODO(), *openvpnServiceName, metav1.GetOptions{})
if err != nil {
log.Error(err)
return []OpenvpnServer{{Host: "service " + *openvpnServiceName + " not found"}}, err
}
log.Tracef("Debug: service from kube api %v", service)
log.Tracef("Debug: service.Status from kube api %v", service.Status)
log.Tracef("Debug: service.Status.LoadBalancer from kube api %v", service.Status.LoadBalancer)
lbIngress := service.Status.LoadBalancer.Ingress
if len(lbIngress) > 0 {
if lbIngress[0].Hostname != "" {
lbHost = lbIngress[0].Hostname
for _, serviceName := range *openvpnServiceName {
service, err := clientset.CoreV1().Services(fRead(kubeNamespaceFilePath)).Get(context.TODO(), serviceName, metav1.GetOptions{})
if err != nil {
log.Error(err)
}
if lbIngress[0].IP != "" {
lbHost = lbIngress[0].IP
log.Tracef("Debug: service from kube api %v", service)
log.Tracef("Debug: service.Status from kube api %v", service.Status)
log.Tracef("Debug: service.Status.LoadBalancer from kube api %v", service.Status.LoadBalancer)
lbIngress := service.Status.LoadBalancer.Ingress
if len(lbIngress) > 0 {
if lbIngress[0].Hostname != "" {
lbHost = lbIngress[0].Hostname
}
if lbIngress[0].IP != "" {
lbHost = lbIngress[0].IP
}
}
hosts = append(hosts, OpenvpnServer{lbHost, strconv.Itoa(int(service.Spec.Ports[0].Port)), strings.ToLower(string(service.Spec.Ports[0].Protocol))})
}
hosts = append(hosts, OpenvpnServer{lbHost, strconv.Itoa(int(service.Spec.Ports[0].Port)), strings.ToLower(string(service.Spec.Ports[0].Protocol))})
if len(hosts) == 0 {
return []OpenvpnServer{{Host: "kubernetes services not found"}}, err
}
return hosts, nil
}