[root@k8s-master ~]# kubectl get cs
NAME STATUS MESSAGE ERROR
controller-manager Healthy ok
scheduler Healthy ok
etcd-0 Healthy {"health": "true"}
etcd-2 Healthy {"health": "true"}
etcd-1 Healthy {"health": "true"}
[root@k8s-master ~]# kubectl get node
NAME STATUS ROLES AGE VERSION
192.168.56.244 Ready <none> 27m v1.11.10
192.168.56.245 Ready <none> 20m v1.11.10
[root@k8s-master ~]# kubectl run nginx --image=nginx --replicas=3
deployment "nginx" created
[root@k8s-master ~]# kubectl get pod
NAME READY STATUS RESTARTS AGE
nginx-64f497f8fd-jnhgm 1/1 Running 0 1m
nginx-64f497f8fd-n5pst 1/1 Running 0 1m
nginx-64f497f8fd-rzldm 1/1 Running 0 1m
[root@k8s-master ~]# kubectl get all
NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE
deploy/nginx 3 3 3 3 2m
NAME DESIRED CURRENT READY AGE
rs/nginx-64f497f8fd 3 3 3 2m
NAME READY STATUS RESTARTS AGE
po/nginx-64f497f8fd-jnhgm 1/1 Running 0 2m
po/nginx-64f497f8fd-n5pst 1/1 Running 0 2m
po/nginx-64f497f8fd-rzldm 1/1 Running 0 2m
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
svc/kubernetes ClusterIP 10.10.10.1 <none> 443/TCP 2h
[root@k8s-master ~]# kubectl get pod
NAME READY STATUS RESTARTS AGE
nginx-64f497f8fd-jnhgm 1/1 Running 0 1m
nginx-64f497f8fd-n5pst 1/1 Running 0 1m
nginx-64f497f8fd-rzldm 1/1 Running 0 1m
[root@k8s-master ~]# kubectl get all
NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE
deploy/nginx 3 3 3 3 2m
NAME DESIRED CURRENT READY AGE
rs/nginx-64f497f8fd 3 3 3 2m
NAME READY STATUS RESTARTS AGE
po/nginx-64f497f8fd-jnhgm 1/1 Running 0 2m
po/nginx-64f497f8fd-n5pst 1/1 Running 0 2m
po/nginx-64f497f8fd-rzldm 1/1 Running 0 2m
[root@k8s-master ~]# kubectl get pod -o wide
NAME READY STATUS RESTARTS AGE IP NODE
nginx-64f497f8fd-jnhgm 1/1 Running 0 3m 172.17.9.2 192.168.56.244
nginx-64f497f8fd-n5pst 1/1 Running 0 3m 172.17.7.2 192.168.56.245
nginx-64f497f8fd-rzldm 1/1 Running 0 3m 172.17.7.3 192.168.56.245
#####暴露端口
[root@k8s-master ~]# kubectl expose deployment nginx --port=88 --target-port=80 --type=NodePort
service "nginx" exposed
[root@k8s-master ~]# kubectl get svc ####生成了一个nginx 集群ip:10.10.10.144
这个IP的范围在哪定义的呢？
[root@k8s-master ~]# cat /opt/kubernetes/cfg/kube-apiserver
--service-cluster-ip-range=10.10.10.0/24 \ #####就是这一句
###我们可以在node上访问集群ip,master 无法访问！！！！（因为master没有部署flannel）
[root@k8s-node01 src]# curl 10.10.10.144:88 <!DOCTYPE html> <html> <head> <title>Welcome to nginx!</title> <style> 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>
#####也可以访问外网的端口，那个端口是随机生成的
####查看日志
[root@k8s-master ~]# kubectl get pod -o wide NAME READY STATUS RESTARTS AGE IP NODE nginx-64f497f8fd-jnhgm 1/1 Running 0 29m 172.17.9.2 192.168.56.244 nginx-64f497f8fd-n5pst 1/1 Running 0 29m 172.17.7.2 192.168.56.245 nginx-64f497f8fd-rzldm 1/1 Running 0 29m 172.17.7.3 192.168.56.245 [root@k8s-master ~]# kubectl logs nginx-64f497f8fd-jnhgm 192.168.56.244 - - [29/May/2019:10:33:45 +0000] "GET / HTTP/1.1" 200 612 "-" "curl/7.29.0" "-" 172.17.9.1 - - [29/May/2019:10:38:09 +0000] "GET / HTTP/1.1" 200 612 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.67 Safari/537.36" "-" 2019/05/29 10:38:09 [error] 5#5: *3 open() "/usr/share/nginx/html/favicon.ico" failed (2: No such file or directory), client: 172.17.9.1, server: localhost, request: "GET /favicon.ico HTTP/1.1", host: "192.168.56.244:35824", referrer: "http://192.168.56.244:35824/" 172.17.9.1 - - [29/May/2019:10:38:09 +0000] "GET /favicon.ico HTTP/1.1" 404 556 "http://192.168.56.244:35824/" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.67 Safari/537.36" "-"
原文：https://www.cnblogs.com/shanhua-fu/p/10945569.html