K8S组件之Node节点Kube-Proxy配置(PART 13)

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kube-proxy是Kubernetes的核心组件，部署在每个Node节点上，它是实现Kubernetes Service的通信与负载均衡机制的重要组件; kube-proxy负责为Pod创建代理服务，从apiserver获取所有server信息，并根据server信息创建代理服务，实现server到Pod的请求路由和转发，从而实现K8S层级的虚拟转发网络。

一、Kube-Proxy配置

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三、Kube-Proxy验证

[root@k8s-master02 ~]# netstat -tunlp
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 127.0.0.1:38187         0.0.0.0:*               LISTEN      681/containerd      
tcp        0      0 127.0.0.1:2379          0.0.0.0:*               LISTEN      669/<span class='keyword-inner'><a href="https://note.t4x.org/kubernetes/k8s-etcd-configure/" title="etcd" target="_blank">Etcd</a></span>            
tcp        0      0 192.168.31.12:2379      0.0.0.0:*               LISTEN      669/etcd            
tcp        0      0 192.168.31.12:2380      0.0.0.0:*               LISTEN      669/etcd            
tcp        0      0 127.0.0.1:10249         0.0.0.0:*               LISTEN      2441/kube-proxy     
tcp        0      0 127.0.0.1:10248         0.0.0.0:*               LISTEN      645/kubelet         
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      679/sshd: /usr/sbin 
tcp        0      0 0.0.0.0:8443            0.0.0.0:*               LISTEN      836/haproxy         
tcp        0      0 127.0.0.1:8443          0.0.0.0:*               LISTEN      836/haproxy         
tcp6       0      0 :::6443                 :::*                    LISTEN      670/kube-apiserver  
tcp6       0      0 :::10259                :::*                    LISTEN      672/kube-<span class='keyword-inner'><a href="https://note.t4x.org/kubernetes/k8s-scheduler-service/" title="Scheduler" target="_blank">Scheduler</a></span>  
tcp6       0      0 :::10257                :::*                    LISTEN      671/kube-controller 
tcp6       0      0 :::10256                :::*                    LISTEN      2441/kube-proxy     
tcp6       0      0 :::22                   :::*                    LISTEN      679/sshd: /usr/sbin 
tcp6       0      0 :::10250                :::*                    LISTEN      645/kubelet         
tcp6       0      0 :::10255                :::*                    LISTEN      645/kubelet         
udp        0      0 127.0.0.1:323           0.0.0.0:*                           656/chronyd         
udp        0      0 0.0.0.0:46792           0.0.0.0:*                           836/haproxy         
udp        0      0 0.0.0.0:40070           0.0.0.0:*                           836/haproxy         
udp6       0      0 ::1:323                 :::*                                656/chronyd         
[root@k8s-master02 ~]# systemctl status kube-proxy
● kube-proxy.service - Kubernetes Kube Proxy
     Loaded: loaded (/usr/lib/systemd/system/kube-proxy.service; enabled; vendor preset: disabled)
     Active: active (running) since Thu 2022-10-27 10:07:05 CST; 37s ago
       Docs: https://github.com/kubernetes/kubernetes
   Main PID: 2441 (kube-proxy)
      Tasks: 6 (limit: 10923)
     Memory: 46.0M
        CPU: 232ms
     CGroup: /system.slice/kube-proxy.service

[root@k8s-master02 ~]# netstat -tunlp

Active Internet connections (only servers)

Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name

tcp 0 0 127.0.0.1:38187 0.0.0.0:* LISTEN 681/containerd

tcp 0 0 127.0.0.1:2379 0.0.0.0:* LISTEN 669/etcd

tcp 0 0 192.168.31.12:2379 0.0.0.0:* LISTEN 669/etcd

tcp 0 0 192.168.31.12:2380 0.0.0.0:* LISTEN 669/etcd

tcp 0 0 127.0.0.1:10249 0.0.0.0:* LISTEN 2441/kube-proxy

tcp 0 0 127.0.0.1:10248 0.0.0.0:* LISTEN 645/kubelet

tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 679/sshd: /usr/sbin

tcp 0 0 0.0.0.0:8443 0.0.0.0:* LISTEN 836/haproxy

tcp 0 0 127.0.0.1:8443 0.0.0.0:* LISTEN 836/haproxy

tcp6 0 0 :::6443 :::* LISTEN 670/kube-apiserver

tcp6 0 0 :::10259 :::* LISTEN 672/kube-scheduler

tcp6 0 0 :::10257 :::* LISTEN 671/kube-controller

tcp6 0 0 :::10256 :::* LISTEN 2441/kube-proxy

tcp6 0 0 :::22 :::* LISTEN 679/sshd: /usr/sbin

tcp6 0 0 :::10250 :::* LISTEN 645/kubelet

tcp6 0 0 :::10255 :::* LISTEN 645/kubelet

udp 0 0 127.0.0.1:323 0.0.0.0:* 656/chronyd

udp 0 0 0.0.0.0:46792 0.0.0.0:* 836/haproxy

udp 0 0 0.0.0.0:40070 0.0.0.0:* 836/haproxy

udp6 0 0 ::1:323 :::* 656/chronyd

[root@k8s-master02 ~]# systemctl status kube-proxy

● kube-proxy.service - Kubernetes Kube Proxy

Loaded: loaded (/usr/lib/systemd/system/kube-proxy.service; enabled; vendor preset: disabled)

Active: active (running) since Thu 2022-10-27 10:07:05 CST; 37s ago

Docs: https://github.com/kubernetes/kubernetes

Main PID: 2441 (kube-proxy)

Tasks: 6 (limit: 10923)

Memory: 46.0M

CPU: 232ms

CGroup: /system.slice/kube-proxy.service

SourceByrd's Weblog-https://note.t4x.org/kubernetes/k8s-kube-proxy/

到此，kube-proxy服务搭建完成。SourceByrd's Weblog-https://note.t4x.org/kubernetes/k8s-kube-proxy/ SourceByrd's Weblog-https://note.t4x.org/kubernetes/k8s-kube-proxy/

申明：除非注明Byrd's Blog内容均为原创,未经许可禁止转载!详情请阅读版权申明!

一、Kube-Proxy配置

三、Kube-Proxy验证

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