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naison
V2EX  ›  Kubernetes

KubeVPN - 云原生开发工具/网络 VPN 工具,打通本地和 k8s 集群网络

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  •   naison · 342 天前 · 1673 次点击
    这是一个创建于 342 天前的主题,其中的信息可能已经有所发展或是发生改变。

    kubevpn

    GitHub Workflow Go Version Go Report Maintainability GitHub License Docker Pulls Releases GoDoc

    KubeVPN

    English | 中文 | 维基

    KubeVPN 是一个云原生开发工具。通过连接云端 kubernetes 网络,可以在本地使用 k8s dns 或者 Pod IP / Service IP 直接访问远端集群中的服务。拦截远端集群中的工作负载的入流量到本地电脑,配合服务网格便于调试及开发。同时还可以使用开发模式,直接在本地使用 Docker 模拟 k8s pod runtime 将容器运行在本地 (具有相同的环境变量,磁盘和网络)。

    快速开始

    从 Github release 下载编译好的二进制文件

    链接

    从 自定义 Krew 仓库安装

    (
      kubectl krew index add kubevpn https://github.com/kubenetworks/kubevpn.git && \
      kubectl krew install kubevpn/kubevpn && kubectl kubevpn 
    ) 
    

    自己构建二进制文件

    (
      git clone https://github.com/kubenetworks/kubevpn.git && \
      cd kubevpn && make kubevpn && ./bin/kubevpn
    )
    
    

    安装 bookinfo 作为 demo 应用

    kubectl apply -f https://raw.githubusercontent.com/kubenetworks/kubevpn/master/samples/bookinfo.yaml
    

    功能

    链接到集群网络

    ➜  ~ kubevpn connect
    Password:
    start to connect
    get cidr from cluster info...
    get cidr from cluster info ok
    get cidr from cni...
    wait pod cni-net-dir-kubevpn to be running timeout, reason , ignore
    get cidr from svc...
    get cidr from svc ok
    get cidr successfully
    traffic manager not exist, try to create it...
    label namespace default
    create serviceAccount kubevpn-traffic-manager
    create roles kubevpn-traffic-manager
    create roleBinding kubevpn-traffic-manager
    create service kubevpn-traffic-manager
    create deployment kubevpn-traffic-manager
    pod kubevpn-traffic-manager-66d969fd45-9zlbp is Pending
    Container     Reason            Message
    control-plane ContainerCreating
    vpn           ContainerCreating
    webhook       ContainerCreating
    
    pod kubevpn-traffic-manager-66d969fd45-9zlbp is Running
    Container     Reason           Message
    control-plane ContainerRunning
    vpn           ContainerRunning
    webhook       ContainerRunning
    
    Creating mutatingWebhook_configuration for kubevpn-traffic-manager
    update ref count successfully
    port forward ready
    tunnel connected
    dns service ok
    +---------------------------------------------------------------------------+
    |    Now you can access resources in the kubernetes cluster, enjoy it :)    |
    +---------------------------------------------------------------------------+
    ➜  ~
    
    ➜  ~ kubectl get pods -o wide
    NAME                                       READY   STATUS             RESTARTS   AGE     IP                NODE              NOMINATED NODE   READINESS GATES
    authors-dbb57d856-mbgqk                    3/3     Running            0          7d23h   172.29.2.132      192.168.0.5       <none>           <none>
    details-7d8b5f6bcf-hcl4t                   1/1     Running            0          61d     172.29.0.77       192.168.104.255   <none>           <none>
    kubevpn-traffic-manager-66d969fd45-9zlbp   3/3     Running            0          74s     172.29.2.136      192.168.0.5       <none>           <none>
    productpage-788df7ff7f-jpkcs               1/1     Running            0          61d     172.29.2.134      192.168.0.5       <none>           <none>
    ratings-77b6cd4499-zvl6c                   1/1     Running            0          61d     172.29.0.86       192.168.104.255   <none>           <none>
    reviews-85c88894d9-vgkxd                   1/1     Running            0          24d     172.29.2.249      192.168.0.5       <none>           <none>
    
    ➜  ~ ping 172.29.2.134
    PING 172.29.2.134 (172.29.2.134): 56 data bytes
    64 bytes from 172.29.2.134: icmp_seq=0 ttl=63 time=55.727 ms
    64 bytes from 172.29.2.134: icmp_seq=1 ttl=63 time=56.270 ms
    64 bytes from 172.29.2.134: icmp_seq=2 ttl=63 time=55.228 ms
    64 bytes from 172.29.2.134: icmp_seq=3 ttl=63 time=54.293 ms
    ^C
    --- 172.29.2.134 ping statistics ---
    4 packets transmitted, 4 packets received, 0.0% packet loss
    round-trip min/avg/max/stddev = 54.293/55.380/56.270/0.728 ms
    
    ➜  ~ kubectl get services -o wide
    NAME                      TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)                              AGE     SELECTOR
    authors                   ClusterIP   172.21.5.160    <none>        9080/TCP                             114d    app=authors
    details                   ClusterIP   172.21.6.183    <none>        9080/TCP                             114d    app=details
    kubernetes                ClusterIP   172.21.0.1      <none>        443/TCP                              319d    <none>
    kubevpn-traffic-manager   ClusterIP   172.21.2.86     <none>        8422/UDP,10800/TCP,9002/TCP,80/TCP   2m28s   app=kubevpn-traffic-manager
    productpage               ClusterIP   172.21.10.49    <none>        9080/TCP                             114d    app=productpage
    ratings                   ClusterIP   172.21.3.247    <none>        9080/TCP                             114d    app=ratings
    reviews                   ClusterIP   172.21.8.24     <none>        9080/TCP                             114d    app=reviews
    
    ➜  ~ curl 172.21.10.49:9080
    <!DOCTYPE html>
    <html>
      <head>
        <title>Simple Bookstore App</title>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    

    域名解析功能

    ➜  ~ curl productpage.default.svc.cluster.local:9080
    <!DOCTYPE html>
    <html>
      <head>
        <title>Simple Bookstore App</title>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    

    短域名解析功能

    ➜  ~ curl productpage:9080
    <!DOCTYPE html>
    <html>
      <head>
        <title>Simple Bookstore App</title>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    ...
    

    链接到多集群网络

    ➜  ~ kubevpn status
    ID Mode Cluster               Kubeconfig                 Namespace Status
    0  full ccijorbccotmqodvr189g /Users/naison/.kube/config default   Connected
    
    ➜  ~ kubevpn connect -n default --kubeconfig ~/.kube/dev_config --lite
    start to connect
    got cidr from cache
    get cidr successfully
    update ref count successfully
    traffic manager already exist, reuse it
    port forward ready
    tunnel connected
    adding route...
    dns service ok
    +---------------------------------------------------------------------------+
    |    Now you can access resources in the kubernetes cluster, enjoy it :)    |
    +---------------------------------------------------------------------------+
    
    ➜  ~ kubevpn status
    ID Mode Cluster               Kubeconfig                     Namespace Status
    0  full ccijorbccotmqodvr189g /Users/naison/.kube/config     default   Connected
    1  lite ccidd77aam2dtnc3qnddg /Users/naison/.kube/dev_config default   Connected
    ➜  ~
    

    反向代理

    ➜  ~ kubevpn proxy deployment/productpage
    already connect to cluster
    start to create remote inbound pod for deployment/productpage
    workload default/deployment/productpage is controlled by a controller
    rollout status for deployment/productpage
    Waiting for deployment "productpage" rollout to finish: 1 old replicas are pending termination...
    Waiting for deployment "productpage" rollout to finish: 1 old replicas are pending termination...
    deployment "productpage" successfully rolled out
    rollout status for deployment/productpage successfully
    create remote inbound pod for deployment/productpage successfully
    +---------------------------------------------------------------------------+
    |    Now you can access resources in the kubernetes cluster, enjoy it :)    |
    +---------------------------------------------------------------------------+
    ➜  ~
    
    package main
    
    import (
    	"io"
    	"net/http"
    )
    
    func main() {
    	http.HandleFunc("/", func(writer http.ResponseWriter, request *http.Request) {
    		_, _ = io.WriteString(writer, "Hello world!")
    	})
    	_ = http.ListenAndServe(":9080", nil)
    }
    
    ➜  ~ curl productpage:9080
    Hello world!%
    ➜  ~ curl productpage.default.svc.cluster.local:9080
    Hello world!%
    

    反向代理支持 service mesh

    支持 HTTP, GRPC 和 WebSocket 等, 携带了指定 header "a: 1" 的流量,将会路由到本地

    ➜  ~ kubevpn proxy deployment/productpage --headers a=1
    already connect to cluster
    start to create remote inbound pod for deployment/productpage
    patch workload default/deployment/productpage with sidecar
    rollout status for deployment/productpage
    Waiting for deployment "productpage" rollout to finish: 1 old replicas are pending termination...
    Waiting for deployment "productpage" rollout to finish: 1 old replicas are pending termination...
    deployment "productpage" successfully rolled out
    rollout status for deployment/productpage successfully
    create remote inbound pod for deployment/productpage successfully
    +---------------------------------------------------------------------------+
    |    Now you can access resources in the kubernetes cluster, enjoy it :)    |
    +---------------------------------------------------------------------------+
    ➜  ~
    
    ➜  ~ curl productpage:9080
    <!DOCTYPE html>
    <html>
      <head>
        <title>Simple Bookstore App</title>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    ...
    
    ➜  ~ curl productpage:9080 -H "a: 1"
    Hello world!%
    

    如果你需要取消代理流量,可以执行如下命令:

    ➜  ~ kubevpn leave deployments/productpage
    leave workload deployments/productpage
    workload default/deployments/productpage is controlled by a controller
    leave workload deployments/productpage successfully
    

    本地进入开发模式 🐳

    将 Kubernetes pod 运行在本地的 Docker 容器中,同时配合 service mesh, 拦截带有指定 header 的流量到本地,或者所有的流量到本地。这个开发模式依赖于本地 Docker 。

    ➜  ~ kubevpn dev deployment/authors --headers a=1 -it --rm --entrypoint sh
    connectting to cluster
    start to connect
    got cidr from cache
    get cidr successfully
    update ref count successfully
    traffic manager already exist, reuse it
    port forward ready
    tunnel connected
    dns service ok
    start to create remote inbound pod for Deployment.apps/authors
    patch workload default/Deployment.apps/authors with sidecar
    rollout status for Deployment.apps/authors
    Waiting for deployment "authors" rollout to finish: 1 old replicas are pending termination...
    Waiting for deployment "authors" rollout to finish: 1 old replicas are pending termination...
    deployment "authors" successfully rolled out
    rollout status for Deployment.apps/authors successfully
    create remote inbound pod for Deployment.apps/authors successfully
    /var/folders/30/cmv9c_5j3mq_kthx63sb1t5c0000gn/T/4044542168121221027:/var/run/secrets/kubernetes.io/serviceaccount
    create docker network 56c25058d4b7498d02c2c2386ccd1b2b127cb02e8a1918d6d24bffd18570200e
    Created container: nginx_default_kubevpn_a9a22
    Wait container nginx_default_kubevpn_a9a22 to be running...
    Container nginx_default_kubevpn_a9a22 is running on port 80/tcp:80 8888/tcp:8888 9080/tcp:9080 now
    WARNING: The requested image's platform (linux/amd64) does not match the detected host platform (linux/arm64/v8) and no specific platform was requested
    Created main container: authors_default_kubevpn_a9a22
    /opt/microservices # ls
    app
    /opt/microservices # ps -ef
    PID   USER     TIME  COMMAND
        1 root      0:00 nginx: master process nginx -g daemon off;
       29 101       0:00 nginx: worker process
       30 101       0:00 nginx: worker process
       31 101       0:00 nginx: worker process
       32 101       0:00 nginx: worker process
       33 101       0:00 nginx: worker process
       34 root      0:00 {sh} /usr/bin/qemu-x86_64 /bin/sh sh
       44 root      0:00 ps -ef
    /opt/microservices # apk add curl
    fetch https://dl-cdn.alpinelinux.org/alpine/v3.14/main/x86_64/APKINDEX.tar.gz
    fetch https://dl-cdn.alpinelinux.org/alpine/v3.14/community/x86_64/APKINDEX.tar.gz
    (1/4) Installing brotli-libs (1.0.9-r5)
    (2/4) Installing nghttp2-libs (1.43.0-r0)
    (3/4) Installing libcurl (8.0.1-r0)
    (4/4) Installing curl (8.0.1-r0)
    Executing busybox-1.33.1-r3.trigger
    OK: 8 MiB in 19 packages
    /opt/microservices # ./app &
    /opt/microservices # 2023/09/30 13:41:58 Start listening http port 9080 ...
    
    /opt/microservices # curl localhost:9080/health
    {"status":"Authors is healthy"}/opt/microservices # exit
    prepare to exit, cleaning up
    update ref count successfully
    tun device closed
    leave resource: deployments.apps/authors
    workload default/deployments.apps/authors is controlled by a controller
    leave resource: deployments.apps/authors successfully
    clean up successfully
    prepare to exit, cleaning up
    update ref count successfully
    clean up successfully
    ➜  ~
    

    如果你只是想在本地启动镜像,可以用一种简单的方式:

    kubevpn dev deployment/authors --no-proxy -it --rm
    

    例如:

    ➜  ~ kubevpn dev deployment/authors --no-proxy -it --rm
    connectting to cluster
    start to connect
    got cidr from cache
    get cidr successfully
    update ref count successfully
    traffic manager already exist, reuse it
    port forward ready
    tunnel connected
    dns service ok
    tar: removing leading '/' from member names
    /var/folders/30/cmv9c_5j3mq_kthx63sb1t5c0000gn/T/5631078868924498209:/var/run/secrets/kubernetes.io/serviceaccount
    tar: Removing leading `/' from member names
    tar: Removing leading `/' from hard link targets
    /var/folders/30/cmv9c_5j3mq_kthx63sb1t5c0000gn/T/1548572512863475037:/var/run/secrets/kubernetes.io/serviceaccount
    create docker network 56c25058d4b7498d02c2c2386ccd1b2b127cb02e8a1918d6d24bffd18570200e
    Created container: nginx_default_kubevpn_ff34b
    Wait container nginx_default_kubevpn_ff34b to be running...
    Container nginx_default_kubevpn_ff34b is running on port 80/tcp:80 8888/tcp:8888 9080/tcp:9080 now
    WARNING: The requested image's platform (linux/amd64) does not match the detected host platform (linux/arm64/v8) and no specific platform was requested
    Created main container: authors_default_kubevpn_ff34b
    2023/09/30 14:02:31 Start listening http port 9080 ...
    
    

    此时程序会挂起,默认为显示日志

    DinD ( Docker in Docker ) 在 Docker 中使用 kubevpn

    如果你想在本地使用 Docker in Docker (DinD) 的方式启动开发模式, 由于程序会读写 /tmp 目录,您需要手动添加参数 -v /tmp:/tmp, 还有一点需要注意, 如果使用 DinD 模式,为了共享容器网络和 pid, 还需要指定参数 --network

    例如:

    ➜  ~ docker run -it --privileged --sysctl net.ipv6.conf.all.disable_ipv6=0 -v /var/run/docker.sock:/var/run/docker.sock -v /tmp:/tmp -v ~/.kube/vke:/root/.kube/config --platform linux/amd64 naison/kubevpn:v2.0.0
    root@d0b3dab8912a:/app# kubevpn dev deployment/authors --headers user=naison -it --entrypoint sh
    hostname is d0b3dab8912a
    connectting to cluster
    start to connect
    got cidr from cache
    get cidr successfully
    update ref count successfully
    traffic manager already exist, reuse it
    port forward ready
    tunnel connected
    dns service ok
    start to create remote inbound pod for Deployment.apps/authors
    patch workload default/Deployment.apps/authors with sidecar
    rollout status for Deployment.apps/authors
    Waiting for deployment "authors" rollout to finish: 1 old replicas are pending termination...
    Waiting for deployment "authors" rollout to finish: 1 old replicas are pending termination...
    deployment "authors" successfully rolled out
    rollout status for Deployment.apps/authors successfully
    create remote inbound pod for Deployment.apps/authors successfully
    tar: removing leading '/' from member names
    /tmp/6460902982794789917:/var/run/secrets/kubernetes.io/serviceaccount
    tar: Removing leading `/' from member names
    tar: Removing leading `/' from hard link targets
    /tmp/5028895788722532426:/var/run/secrets/kubernetes.io/serviceaccount
    network mode is container:d0b3dab8912a
    Created container: nginx_default_kubevpn_6df63
    Wait container nginx_default_kubevpn_6df63 to be running...
    Container nginx_default_kubevpn_6df63 is running now
    WARNING: The requested image's platform (linux/amd64) does not match the detected host platform (linux/arm64/v8) and no specific platform was requested
    Created main container: authors_default_kubevpn_6df5f
    /opt/microservices # ps -ef
    PID   USER     TIME  COMMAND
        1 root      0:00 {bash} /usr/bin/qemu-x86_64 /bin/bash /bin/bash
       14 root      0:02 {kubevpn} /usr/bin/qemu-x86_64 /usr/local/bin/kubevpn kubevpn dev deployment/authors --headers
       25 root      0:01 {kubevpn} /usr/bin/qemu-x86_64 /usr/local/bin/kubevpn /usr/local/bin/kubevpn daemon
       37 root      0:04 {kubevpn} /usr/bin/qemu-x86_64 /usr/local/bin/kubevpn /usr/local/bin/kubevpn daemon --sudo
       53 root      0:00 nginx: master process nginx -g daemon off;
    (4/4) Installing curl (8.0.1-r0)
    Executing busybox-1.33.1-r3.trigger
    OK: 8 MiB in 19 packagesnx: worker process
    /opt/microservices #
    /opt/microservices # apk add curl
    OK: 8 MiB in 19 packages
    /opt/microservices # curl localhost:80
    <!DOCTYPE html>
    <html>
    <head>
    <title>Welcome to nginx!</title>
    <style>
    html { color-scheme: light dark; }
    body { width: 35em; margin: 0 auto;
    font-family: Tahoma, Verdana, Arial, sans-serif; }
    </style>
    </head>
    <body>
    <h1>Welcome to nginx!</h1>
    <p>If you see this page, the nginx web server is successfully installed and
    working. Further configuration is required.</p>
    
    <p>For online documentation and support please refer to
    <a href="http://nginx.org/">nginx.org</a>.<br/>
    Commercial support is available at
    <a href="http://nginx.com/">nginx.com</a>.</p>
    
    <p><em>Thank you for using nginx.</em></p>
    </body>
    </html>
    /opt/microservices # ls
    app
    /opt/microservices # ls -alh
    total 6M
    drwxr-xr-x    2 root     root        4.0K Oct 18  2021 .
    drwxr-xr-x    1 root     root        4.0K Oct 18  2021 ..
    -rwxr-xr-x    1 root     root        6.3M Oct 18  2021 app
    /opt/microservices # ./app &
    /opt/microservices # 2023/09/30 14:27:32 Start listening http port 9080 ...
    
    /opt/microservices # curl authors:9080/health
    /opt/microservices # curl authors:9080/health
    {"status":"Authors is healthy"}/opt/microservices #
    /opt/microservices # curl localhost:9080/health
    {"status":"Authors is healthy"}/opt/microservices # exit
    prepare to exit, cleaning up
    update ref count successfully
    tun device closed
    leave resource: deployments.apps/authors
    workload default/deployments.apps/authors is controlled by a controller
    leave resource: deployments.apps/authors successfully
    clean up successfully
    prepare to exit, cleaning up
    update ref count successfully
    clean up successfully
    root@d0b3dab8912a:/app# exit
    exit
    ➜  ~
    

    支持多种协议

    • TCP
    • UDP
    • ICMP
    • GRPC
    • WebSocket
    • HTTP
    • ...

    支持三大平台

    • macOS
    • Linux
    • Windows
    1 条回复    2024-01-18 17:47:09 +08:00
    xiaooloong
        1
    xiaooloong  
       342 天前
    我也来
    https://www.jianshu.com/p/b8a4c5ccc92d
    使用 calico cni 搭建网络直通集群
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