k8s ingress

https://www.cnblogs.com/hanxing/p/16062860.html

192.168.1.222 k8s-master11 m1

192.168.1.223 k8s-master12 m2

192.168.1.224 k8s-master13 m3

192.168.1.225 k8s-node01 n1

192.168.1.226 k8s-node02 n2

keepalived和haproxy装在n1和n2上，VIP为   192.168.1.123 

 

安装 ingress-controller

docker  pull quay.io/kubernetes-ingress-controller/nginx-ingress-controller:0.25.0

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各个节点可先pull镜像 [root@k8s-node02 ~]#  docker  pull quay.io/kubernetes-ingress-controller/nginx-ingress-controller     [root@k8s-master11 ~]# kubectl apply -f ingress-nginx-install.yml namespace/ingress-nginx created configmap/nginx-configuration created configmap/tcp-services created configmap/udp-services created serviceaccount/nginx-ingress-serviceaccount created clusterrole.rbac.authorization.k8s.io/nginx-ingress-clusterrole created role.rbac.authorization.k8s.io/nginx-ingress-role created rolebinding.rbac.authorization.k8s.io/nginx-ingress-role-nisa-binding created clusterrolebinding.rbac.authorization.k8s.io/nginx-ingress-clusterrole-nisa-binding created deployment.apps/nginx-ingress-controller created

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1	ingress-nginx-install.yml 如下：

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apiVersion: v1 kind: Namespace metadata:   name: ingress-nginx   labels:     app.kubernetes.io/name: ingress-nginx     app.kubernetes.io/part-of: ingress-nginx   ---   kind: ConfigMap apiVersion: v1 metadata:   name: nginx-configuration   namespace: ingress-nginx   labels:     app.kubernetes.io/name: ingress-nginx     app.kubernetes.io/part-of: ingress-nginx   --- kind: ConfigMap apiVersion: v1 metadata:   name: tcp-services   namespace: ingress-nginx   labels:     app.kubernetes.io/name: ingress-nginx     app.kubernetes.io/part-of: ingress-nginx   --- kind: ConfigMap apiVersion: v1 metadata:   name: udp-services   namespace: ingress-nginx   labels:     app.kubernetes.io/name: ingress-nginx     app.kubernetes.io/part-of: ingress-nginx   --- apiVersion: v1 kind: ServiceAccount metadata:   name: nginx-ingress-serviceaccount   namespace: ingress-nginx   labels:     app.kubernetes.io/name: ingress-nginx     app.kubernetes.io/part-of: ingress-nginx   --- apiVersion: rbac.authorization.k8s.io/v1beta1 kind: ClusterRole metadata:   name: nginx-ingress-clusterrole   labels:     app.kubernetes.io/name: ingress-nginx     app.kubernetes.io/part-of: ingress-nginx rules:   - apiGroups:       - ""     resources:       - configmaps       - endpoints       - nodes       - pods       - secrets     verbs:       - list       - watch   - apiGroups:       - ""     resources:       - nodes     verbs:       - get   - apiGroups:       - ""     resources:       - services     verbs:       - get       - list       - watch   - apiGroups:       - ""     resources:       - events     verbs:       - create       - patch   - apiGroups:       - "extensions"       - "networking.k8s.io"     resources:       - ingresses     verbs:       - get       - list       - watch   - apiGroups:       - "extensions"       - "networking.k8s.io"     resources:       - ingresses/status     verbs:       - update   --- apiVersion: rbac.authorization.k8s.io/v1beta1 kind: Role metadata:   name: nginx-ingress-role   namespace: ingress-nginx   labels:     app.kubernetes.io/name: ingress-nginx     app.kubernetes.io/part-of: ingress-nginx rules:   - apiGroups:       - ""     resources:       - configmaps       - pods       - secrets       - namespaces     verbs:       - get   - apiGroups:       - ""     resources:       - configmaps     resourceNames:       # Defaults to "<election-id>-<ingress-class>"       # Here: "<ingress-controller-leader>-<nginx>"       # This has to be adapted if you change either parameter       # when launching the nginx-ingress-controller.       - "ingress-controller-leader-nginx"     verbs:       - get       - update   - apiGroups:       - ""     resources:       - configmaps     verbs:       - create   - apiGroups:       - ""     resources:       - endpoints     verbs:       - get   --- apiVersion: rbac.authorization.k8s.io/v1beta1 kind: RoleBinding metadata:   name: nginx-ingress-role-nisa-binding   namespace: ingress-nginx   labels:     app.kubernetes.io/name: ingress-nginx     app.kubernetes.io/part-of: ingress-nginx roleRef:   apiGroup: rbac.authorization.k8s.io   kind: Role   name: nginx-ingress-role subjects:   - kind: ServiceAccount     name: nginx-ingress-serviceaccount     namespace: ingress-nginx   --- apiVersion: rbac.authorization.k8s.io/v1beta1 kind: ClusterRoleBinding metadata:   name: nginx-ingress-clusterrole-nisa-binding   labels:     app.kubernetes.io/name: ingress-nginx     app.kubernetes.io/part-of: ingress-nginx roleRef:   apiGroup: rbac.authorization.k8s.io   kind: ClusterRole   name: nginx-ingress-clusterrole subjects:   - kind: ServiceAccount     name: nginx-ingress-serviceaccount     namespace: ingress-nginx   ---   apiVersion: apps/v1 kind: Deployment metadata:   name: nginx-ingress-controller   namespace: ingress-nginx   labels:     app.kubernetes.io/name: ingress-nginx     app.kubernetes.io/part-of: ingress-nginx spec:   replicas: 1   selector:     matchLabels:       app.kubernetes.io/name: ingress-nginx       app.kubernetes.io/part-of: ingress-nginx   template:     metadata:       labels:         app.kubernetes.io/name: ingress-nginx         app.kubernetes.io/part-of: ingress-nginx       annotations:         prometheus.io/port: "10254"         prometheus.io/scrape: "true"     spec:       serviceAccountName: nginx-ingress-serviceaccount       containers:         - name: nginx-ingress-controller           image: quay.io/kubernetes-ingress-controller/nginx-ingress-controller:0.25.0           args:             - /nginx-ingress-controller             - --configmap=$(POD_NAMESPACE)/nginx-configuration             - --tcp-services-configmap=$(POD_NAMESPACE)/tcp-services             - --udp-services-configmap=$(POD_NAMESPACE)/udp-services             - --publish-service=$(POD_NAMESPACE)/ingress-nginx             - --annotations-prefix=nginx.ingress.kubernetes.io           securityContext:             allowPrivilegeEscalation: true             capabilities:               drop:                 - ALL               add:                 - NET_BIND_SERVICE             # www-data -> 33             runAsUser: 33           env:             - name: POD_NAME               valueFrom:                 fieldRef:                   fieldPath: metadata.name             - name: POD_NAMESPACE               valueFrom:                 fieldRef:                   fieldPath: metadata.namespace           ports:             - name: http               containerPort: 80             - name: https               containerPort: 443           livenessProbe:             failureThreshold: 3             httpGet:               path: /healthz               port: 10254               scheme: HTTP             initialDelaySeconds: 10             periodSeconds: 10             successThreshold: 1             timeoutSeconds: 10           readinessProbe:             failureThreshold: 3             httpGet:               path: /healthz               port: 10254               scheme: HTTP             periodSeconds: 10             successThreshold: 1             timeoutSeconds: 10   ---

检查  ingress-controller （其实就是个ng）

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[root@k8s-master11 ~]# kubectl get po -A -o wide|grep ingre       ingress-nginx   nginx-ingress-controller-7995bd9c47-qn277   1/1     Running   0          111m    10.244.3.3      k8s-node01     <none>           <none>   [root@k8s-master11 ~]# kubectl get deploy -A|grep  ingress ingress-nginx   nginx-ingress-controller   1/1     1            1           110m

查 ingress的ng配置

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[root@k8s-master11 ~]# kubectl exec -it po/nginx-ingress-controller-7995bd9c47-qn277 -n ingress-nginx sh $ ps -ef |grep nginx www-data      1      0  0 07:38 ?        00:00:00 /usr/bin/dumb-init -- /nginx-ingress-controller --configmap=ingress-nginx/nginx-configuration --tcp-services-configmap=ingress-nginx/tcp-services --udp-services-configmap=ingress-nginx/udp-services --publish-service=ingress-nginx/ingress-nginx --annotations-prefix=nginx.ingress.kubernetes.io www-data      8      1  3 07:38 ?        00:06:22 /nginx-ingress-controller --configmap=ingress-nginx/nginx-configuration --tcp-services-configmap=ingress-nginx/tcp-services --udp-services-configmap=ingress-nginx/udp-services --publish-service=ingress-nginx/ingress-nginx --annotations-prefix=nginx.ingress.kubernetes.io www-data     34      8  0 07:38 ?        00:00:02 nginx: master process /usr/local/openresty/nginx/sbin/nginx -c /etc/nginx/nginx.conf www-data    466     34  0 08:13 ?        00:00:11 nginx: worker process www-data    467     34  0 08:13 ?        00:00:11 nginx: worker process www-data    468     34  0 08:13 ?        00:00:10 nginx: worker process www-data    469     34  0 08:13 ?        00:00:11 nginx: worker process www-data    606    598  0 11:05 pts/0    00:00:00 grep nginx $ cat /etc/ng   ^H^H^H^H^C $ cat /etc/nginx/nginx.conf   # Configuration checksum: 825640207497700627   # setup custom paths that do not require root access pid /tmp/nginx.pid;   daemon off;   worker_processes 4;   worker_rlimit_nofile 15360;   worker_shutdown_timeout 10s ;   events {         multi_accept        on;         worker_connections  16384;         use                 epoll; }   http {         lua_package_path        "/usr/local/openresty/site/lualib/?.ljbc;/usr/local/openresty/site/lualib/?/init.ljbc;/usr/local/openresty/lualib/?.ljbc;/usr/local/openresty/lualib/?/init.ljbc;/usr/local/openresty/site/lualib/?.lua;/usr/local/openresty/site/lualib/?/init.lua;/usr/local/openresty/lualib/?.lua;/usr/local/openresty/lualib/?/init.lua;./?.lua;/usr/local/openresty/luajit/share/luajit-2.1.0-beta3/?.lua;/usr/local/share/lua/5.1/?.lua;/usr/local/share/lua/5.1/?/init.lua;/usr/local/openresty/luajit/share/lua/5.1/?.lua;/usr/local/openresty/luajit/share/lua/5.1/?/init.lua;/usr/local/lib/lua/?.lua;;";         lua_package_cpath       "/usr/local/openresty/site/lualib/?.so;/usr/local/openresty/lualib/?.so;./?.so;/usr/local/lib/lua/5.1/?.so;/usr/local/openresty/luajit/lib/lua/5.1/?.so;/usr/local/lib/lua/5.1/loadall.so;/usr/local/openresty/luajit/lib/lua/5.1/?.so;;";           lua_shared_dict configuration_data 15M;         lua_shared_dict certificate_data 16M;           init_by_lua_block {                 collectgarbage("collect")                   local lua_resty_waf = require("resty.waf")                 lua_resty_waf.init()                   -- init modules                 local ok, res                   ok, res = pcall(require, "lua_ingress")                 if not ok then                 error("require failed: " .. tostring(res))                 else                 lua_ingress = res                 lua_ingress.set_config({                         use_forwarded_headers = false,                         is_ssl_passthrough_enabled = false,                         http_redirect_code = 308,                 listen_ports = { ssl_proxy = "442", https = "443" },                 })                 end                   ok, res = pcall(require, "configuration")                 if not ok then                 error("require failed: " .. tostring(res))                 else                 configuration = res         configuration.nameservers = { "10.96.0.10" }                 end                   ok, res = pcall(require, "balancer")                 if not ok then                 error("require failed: " .. tostring(res))                 else                 balancer = res                 end                   ok, res = pcall(require, "monitor")                 if not ok then                 error("require failed: " .. tostring(res))                 else                 monitor = res                 end                   ok, res = pcall(require, "certificate")                 if not ok then                 error("require failed: " .. tostring(res))                 else                 certificate = res                 end                   ok, res = pcall(require, "plugins")                 if not ok then                 error("require failed: " .. tostring(res))                 else                 plugins = res                 end                 -- load all plugins that'll be used here         plugins.init({})         }           init_worker_by_lua_block {                 lua_ingress.init_worker()                 balancer.init_worker()                   monitor.init_worker()                   plugins.run()         }           geoip_country       /etc/nginx/geoip/GeoIP.dat;         geoip_city          /etc/nginx/geoip/GeoLiteCity.dat;         geoip_org           /etc/nginx/geoip/GeoIPASNum.dat;         geoip_proxy_recursive on;           aio                 threads;         aio_write           on;           tcp_nopush          on;         tcp_nodelay         on;           log_subrequest      on;           reset_timedout_connection on;           keepalive_timeout  75s;         keepalive_requests 100;           client_body_temp_path           /tmp/client-body;         fastcgi_temp_path               /tmp/fastcgi-temp;         proxy_temp_path                 /tmp/proxy-temp;         ajp_temp_path                   /tmp/ajp-temp;           client_header_buffer_size       1k;         client_header_timeout           60s;         large_client_header_buffers     4 8k;         client_body_buffer_size         8k;         client_body_timeout             60s;           http2_max_field_size            4k;         http2_max_header_size           16k;         http2_max_requests              1000;           types_hash_max_size             2048;         server_names_hash_max_size      1024;         server_names_hash_bucket_size   32;         map_hash_bucket_size            64;           proxy_headers_hash_max_size     512;         proxy_headers_hash_bucket_size  64;           variables_hash_bucket_size      128;         variables_hash_max_size         2048;           underscores_in_headers          off;         ignore_invalid_headers          on;           limit_req_status                503;         limit_conn_status               503;           include /etc/nginx/mime.types;         default_type text/html;           gzip on;         gzip_comp_level 5;         gzip_http_version 1.1;         gzip_min_length 256;         gzip_types application/atom+xml application/javascript application/x-javascript application/json application/rss+xml application/vnd.ms-fontobject application/x-font-ttf application/x-web-app-manifest+json application/xhtml+xml application/xml font/opentype image/svg+xml image/x-icon text/css text/javascript text/plain text/x-component;         gzip_proxied any;         gzip_vary on;           # Custom headers for response           server_tokens on;           # disable warnings         uninitialized_variable_warn off;           # Additional available variables:         # $namespace         # $ingress_name         # $service_name         # $service_port         log_format upstreaminfo '$the_real_ip - [$the_real_ip] - $remote_user [$time_local] "$request" $status $body_bytes_sent "$http_referer" "$http_user_agent" $request_length $request_time [$proxy_upstream_name] [$proxy_alternative_upstream_name] $upstream_addr $upstream_response_length $upstream_response_time $upstream_status $req_id';           map $request_uri $loggable {                   default 1;         }           access_log /var/log/nginx/access.log upstreaminfo  if=$loggable;           error_log  /var/log/nginx/error.log notice;           resolver 10.96.0.10 valid=30s ipv6=off;           # See https://www.nginx.com/blog/websocket-nginx         map $http_upgrade $connection_upgrade {                 default          upgrade;                   # See http://nginx.org/en/docs/http/ngx_http_upstream_module.html#keepalive                 ''               '';           }           # The following is a sneaky way to do "set $the_real_ip $remote_addr"         # Needed because using set is not allowed outside server blocks.         map '' $the_real_ip {                   default          $remote_addr;           }           # Reverse proxies can detect if a client provides a X-Request-ID header, and pass it on to the backend server.         # If no such header is provided, it can provide a random value.         map $http_x_request_id $req_id {                 default   $http_x_request_id;                   ""        $request_id;           }           # Create a variable that contains the literal $ character.         # This works because the geo module will not resolve variables.         geo $literal_dollar {                 default "$";         }           server_name_in_redirect off;         port_in_redirect        off;           ssl_protocols TLSv1.2;           # turn on session caching to drastically improve performance           ssl_session_cache builtin:1000 shared:SSL:10m;         ssl_session_timeout 10m;           # allow configuring ssl session tickets         ssl_session_tickets on;           # slightly reduce the time-to-first-byte         ssl_buffer_size 4k;           # allow configuring custom ssl ciphers         ssl_ciphers 'ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256';         ssl_prefer_server_ciphers on;           ssl_ecdh_curve auto;           proxy_ssl_session_reuse on;           upstream upstream_balancer {                 server 0.0.0.1; # placeholder                   balancer_by_lua_block {                         balancer.balance()                 }                   keepalive 32;                   keepalive_timeout  60s;                 keepalive_requests 100;           }           # Global filters           ## start server _         server {                 server_name _ ;                   listen 80 default_server reuseport backlog=511;                   set $proxy_upstream_name "-";                 set $pass_access_scheme $scheme;                 set $pass_server_port $server_port;                 set $best_http_host $http_host;                 set $pass_port $pass_server_port;                   listen 443  default_server reuseport backlog=511 ssl http2;                   # PEM sha: d89755e71cf6b1cb80fc181271c11978e79fc4ce                 ssl_certificate                         /etc/ingress-controller/ssl/default-fake-certificate.pem;                 ssl_certificate_key                     /etc/ingress-controller/ssl/default-fake-certificate.pem;                   ssl_certificate_by_lua_block {                         certificate.call()                 }                   location / {                           set $namespace      "";                         set $ingress_name   "";                         set $service_name   "";                         set $service_port   "0";                         set $location_path  "/";                           rewrite_by_lua_block {                                 lua_ingress.rewrite({                                         force_ssl_redirect = false,                                         use_port_in_redirects = false,                                 })                                 balancer.rewrite()                                 plugins.run()                         }                           header_filter_by_lua_block {                                   plugins.run()                         }                         body_filter_by_lua_block {                           }                           log_by_lua_block {                                   balancer.log()                                   monitor.call()                                   plugins.run()                         }                           if ($scheme = https) {                                 more_set_headers                        "Strict-Transport-Security: max-age=15724800; includeSubDomains";                         }                           access_log off;                           port_in_redirect off;                           set $balancer_ewma_score -1;                         set $proxy_upstream_name    "upstream-default-backend";                         set $proxy_host             $proxy_upstream_name;                           set $proxy_alternative_upstream_name "";                           client_max_body_size                    1m;                           proxy_set_header Host                   $best_http_host;                           # Pass the extracted client certificate to the backend                           # Allow websocket connections                         proxy_set_header                        Upgrade           $http_upgrade;                           proxy_set_header                        Connection        $connection_upgrade;                           proxy_set_header X-Request-ID           $req_id;                         proxy_set_header X-Real-IP              $the_real_ip;                           proxy_set_header X-Forwarded-For        $the_real_ip;                           proxy_set_header X-Forwarded-Host       $best_http_host;                         proxy_set_header X-Forwarded-Port       $pass_port;                         proxy_set_header X-Forwarded-Proto      $pass_access_scheme;                           proxy_set_header X-Original-URI         $request_uri;                           proxy_set_header X-Scheme               $pass_access_scheme;                           # Pass the original X-Forwarded-For                         proxy_set_header X-Original-Forwarded-For $http_x_forwarded_for;                           # mitigate HTTPoxy Vulnerability                         # https://www.nginx.com/blog/mitigating-the-httpoxy-vulnerability-with-nginx/                         proxy_set_header Proxy                  "";                           # Custom headers to proxied server                           proxy_connect_timeout                   5s;                         proxy_send_timeout                      60s;                         proxy_read_timeout                      60s;                           proxy_buffering                         off;                         proxy_buffer_size                       4k;                         proxy_buffers                           4 4k;                         proxy_request_buffering                 on;                           proxy_http_version                      1.1;                           proxy_cookie_domain                     off;                         proxy_cookie_path                       off;                           # In case of errors try the next upstream server before returning an error                         proxy_next_upstream                     error timeout;                         proxy_next_upstream_timeout             0;                         proxy_next_upstream_tries               3;                           proxy_pass http://upstream_balancer;                           proxy_redirect                          off;                   }                   # health checks in cloud providers require the use of port 80                 location /healthz {                           access_log off;                         return 200;                 }                   # this is required to avoid error if nginx is being monitored                 # with an external software (like sysdig)                 location /nginx_status {                           allow 127.0.0.1;                           deny all;                           access_log off;                         stub_status on;                 }           }         ## end server _           ## start server www.zzx.com         server {                 server_name www.zzx.com ;                   listen 80;                   set $proxy_upstream_name "-";                 set $pass_access_scheme $scheme;                 set $pass_server_port $server_port;                 set $best_http_host $http_host;                 set $pass_port $pass_server_port;                   location / {                           set $namespace      "default";                         set $ingress_name   "nginx-ingress";                         set $service_name   "nginx-svc";                         set $service_port   "80";                         set $location_path  "/";                           rewrite_by_lua_block {                                 lua_ingress.rewrite({                                         force_ssl_redirect = false,                                         use_port_in_redirects = false,                                 })                                 balancer.rewrite()                                 plugins.run()                         }                           header_filter_by_lua_block {                                   plugins.run()                         }                         body_filter_by_lua_block {                           }                           log_by_lua_block {                                   balancer.log()                                   monitor.call()                                   plugins.run()                         }                           port_in_redirect off;                           set $balancer_ewma_score -1;                         set $proxy_upstream_name    "default-nginx-svc-80";                         set $proxy_host             $proxy_upstream_name;                           set $proxy_alternative_upstream_name "";                           client_max_body_size                    1m;                           proxy_set_header Host                   $best_http_host;                           # Pass the extracted client certificate to the backend                           # Allow websocket connections                         proxy_set_header                        Upgrade           $http_upgrade;                           proxy_set_header                        Connection        $connection_upgrade;                           proxy_set_header X-Request-ID           $req_id;                         proxy_set_header X-Real-IP              $the_real_ip;                           proxy_set_header X-Forwarded-For        $the_real_ip;                           proxy_set_header X-Forwarded-Host       $best_http_host;                         proxy_set_header X-Forwarded-Port       $pass_port;                         proxy_set_header X-Forwarded-Proto      $pass_access_scheme;                           proxy_set_header X-Original-URI         $request_uri;                           proxy_set_header X-Scheme               $pass_access_scheme;                           # Pass the original X-Forwarded-For                         proxy_set_header X-Original-Forwarded-For $http_x_forwarded_for;                           # mitigate HTTPoxy Vulnerability                         # https://www.nginx.com/blog/mitigating-the-httpoxy-vulnerability-with-nginx/                         proxy_set_header Proxy                  "";                           # Custom headers to proxied server                           proxy_connect_timeout                   5s;                         proxy_send_timeout                      60s;                         proxy_read_timeout                      60s;                           proxy_buffering                         off;                         proxy_buffer_size                       4k;                         proxy_buffers                           4 4k;                         proxy_request_buffering                 on;                           proxy_http_version                      1.1;                           proxy_cookie_domain                     off;                         proxy_cookie_path                       off;                           # In case of errors try the next upstream server before returning an error                         proxy_next_upstream                     error timeout;                         proxy_next_upstream_timeout             0;                         proxy_next_upstream_tries               3;                           proxy_pass http://upstream_balancer;                           proxy_redirect                          off;                   }           }         ## end server www.zzx.com           # backend for when default-backend-service is not configured or it does not have endpoints         server {                 listen 8181 default_server reuseport backlog=511;                   set $proxy_upstream_name "internal";                   access_log off;                   location / {                         return 404;                 }         }           # default server, used for NGINX healthcheck and access to nginx stats         server {                 listen unix:/tmp/nginx-status-server.sock;                 set $proxy_upstream_name "internal";                   keepalive_timeout 0;                 gzip off;                   access_log off;                   location /healthz {                         return 200;                 }                   location /is-dynamic-lb-initialized {                         content_by_lua_block {                                 local configuration = require("configuration")                                 local backend_data = configuration.get_backends_data()                                 if not backend_data then                                 ngx.exit(ngx.HTTP_INTERNAL_SERVER_ERROR)                                 return                                 end                                   ngx.say("OK")                                 ngx.exit(ngx.HTTP_OK)                         }                 }                   location /nginx_status {                         stub_status on;                 }                   location /configuration {                         # this should be equals to configuration_data dict                         client_max_body_size                    10m;                         client_body_buffer_size                 10m;                         proxy_buffering                         off;                           content_by_lua_block {                                 configuration.call()                         }                 }                   location / {                         content_by_lua_block {                                 ngx.exit(ngx.HTTP_NOT_FOUND)                         }                 }         } }   stream {         lua_package_cpath "/usr/local/lib/lua/?.so;/usr/lib/lua-platform-path/lua/5.1/?.so;;";         lua_package_path "/etc/nginx/lua/?.lua;/etc/nginx/lua/vendor/?.lua;/usr/local/lib/lua/?.lua;;";           lua_shared_dict tcp_udp_configuration_data 5M;           init_by_lua_block {                 collectgarbage("collect")                   -- init modules                 local ok, res                   ok, res = pcall(require, "configuration")                 if not ok then                 error("require failed: " .. tostring(res))                 else                 configuration = res         configuration.nameservers = { "10.96.0.10" }                 end                   ok, res = pcall(require, "tcp_udp_configuration")                 if not ok then                 error("require failed: " .. tostring(res))                 else                 tcp_udp_configuration = res                 end                   ok, res = pcall(require, "tcp_udp_balancer")                 if not ok then                 error("require failed: " .. tostring(res))                 else                 tcp_udp_balancer = res                 end         }           init_worker_by_lua_block {                 tcp_udp_balancer.init_worker()         }           lua_add_variable $proxy_upstream_name;           log_format log_stream [$time_local] $protocol $status $bytes_sent $bytes_received $session_time;           access_log /var/log/nginx/access.log log_stream ;           error_log  /var/log/nginx/error.log;           upstream upstream_balancer {                 server 0.0.0.1:1234; # placeholder                   balancer_by_lua_block {                         tcp_udp_balancer.balance()                 }         }           server {                 listen unix:/tmp/ingress-stream.sock;                   content_by_lua_block {                         tcp_udp_configuration.call()                 }         }           # TCP services           # UDP services   }   $

　　

 

检查ingress-controller的  svc，是一个NodePort，可用通过外部 31663访问  可编辑看看， kubectl edit svc/ingress-nginx -n ingress-nginx

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[root@k8s-master11 ~]# kubectl get svc  -n ingress-nginx -o wide NAME            TYPE       CLUSTER-IP       EXTERNAL-IP   PORT(S)                      AGE   SELECTOR ingress-nginx   NodePort   10.109.152.173   <none>        80:31663/TCP,443:32333/TCP   65m   app.kubernetes.io/name=ingress-nginx,app.kubernetes.io/part-of=ingress-nginx

　　

　　

创建 应用 deploy  svc  ingress

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[root@k8s-master11 ~]# kubectl apply -f ingress.yml      deployment.extensions/nginx-deploy created service/nginx-svc created ingress.extensions/nginx-ingress created

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1	<br>ingress.yml    如下：

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[root@k8s-master11 ~]# cat ingress.yml   apiVersion: extensions/v1beta1 kind: Deployment metadata:   name: nginx-deploy spec:   replicas: 2   template:     metadata:       labels:         name: nginx-app     spec:       containers:         - name: nginx-app           image: wangyanglinux/myapp:v1           imagePullPolicy: IfNotPresent           ports:             - containerPort: 80 --- apiVersion: v1 kind: Service metadata:   name: nginx-svc spec:   ports:     - port: 80       targetPort: 80       protocol: TCP   selector:  #匹配deploy的labels     name: nginx-app --- apiVersion: extensions/v1beta1 kind: Ingress metadata:   name: nginx-ingress spec:   rules:     - host: www.zzx.com       http:         paths:         - path: /           backend:             serviceName: nginx-svc     #依赖的svc  metadata：name             servicePort: 80

　　

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1	<br><br><br>检查

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[root@k8s-master11 ~]# kubectl get deploy/nginx-deploy -o wide NAME           READY   UP-TO-DATE   AVAILABLE   AGE     CONTAINERS   IMAGES                   SELECTOR nginx-deploy   2/2     2            2           6m11s   nginx-app    wangyanglinux/myapp:v1   name=nginx-app [root@k8s-master11 ~]# [root@k8s-master11 ~]# kubectl get svc/nginx-svc -o wide                   NAME        TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)   AGE    SELECTOR nginx-svc   ClusterIP   10.102.69.189   <none>        80/TCP    2m5s   name=nginx-app [root@k8s-master11 ~]# [root@k8s-master11 ~]# kubectl get ingress/nginx-ingress -o wide             NAME            HOSTS         ADDRESS   PORTS   AGE nginx-ingress   www.zzx.com             80      2m16s

 

　　

浏览器访问  (C:\Windows\System32\drivers\etc\hosts   添加  192.168.1.223  www.zzx.com)

http://www.zzx.com:31663/　　

修改/etc/haproxy/haproxy.cfg 

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添加 frontend  nginx    bind *:80    mode tcp    default_backend             nginx_ingress   backend nginx_ingress     balance     roundrobin     mode tcp     server  k8s-master11 192.168.1.222:31663 check weight 1 maxconn 2000 check inter 2000 rise 2 fall 3     server  k8s-master12 192.168.1.223:31663 check weight 1 maxconn 2000 check inter 2000 rise 2 fall 3     server  k8s-master13 192.168.1.224:31663 check weight 1 maxconn 2000 check inter 2000 rise 2 fall 3

C:\Windows\System32\drivers\etc\hosts   改为 192.168.1.123  www.zzx.com

　http://www.zzx.com:80　

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1	<br>验证第二个域名<br><br><br>修改配置文件

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[root@k8s-master11 ~]# cp  ingress.yml   ingress-v2.yml     name lable等添加-v2，image改为v2   [root@k8s-master11 ~]# cat  ingress-v2.yml apiVersion: extensions/v1beta1 kind: Deployment metadata:   name: nginx-deploy-v2 spec:   replicas: 2   template:     metadata:       labels:         name: nginx-app-v2     spec:       containers:         - name: nginx-app-v2           image: wangyanglinux/myapp:v2           imagePullPolicy: IfNotPresent           ports:             - containerPort: 80 --- apiVersion: v1 kind: Service metadata:   name: nginx-svc-v2 spec:   ports:     - port: 80       targetPort: 80       protocol: TCP   selector:  #匹配deploy的labels     name: nginx-app-v2 --- apiVersion: extensions/v1beta1 kind: Ingress metadata:   name: nginx-ingress-v2 spec:   rules:     - host: www.zzx2.com       http:         paths:         - path: /           backend:             serviceName: nginx-svc-v2     #依赖的svc  metadata：name             servicePort: 80

　　启动新的v2版deploy

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[root@k8s-master11 ~]# kubectl apply -f ingress-v2.yml deployment.extensions/nginx-deploy-v2 unchanged service/nginx-svc-v2 unchanged ingress.extensions/nginx-ingress-v2 configured [root@k8s-master11 ~]# ^C [root@k8s-master11 ~]# ^C [root@k8s-master11 ~]# ^C [root@k8s-master11 ~]# kubectl get po                  NAME                               READY   STATUS    RESTARTS   AGE nginx-app-646778d676-959hx         1/1     Running   0          5h5m nginx-app-646778d676-9s5q6         1/1     Running   0          5h5m nginx-deploy-5dcb69cfcf-bxkpf      1/1     Running   0          3h29m nginx-deploy-5dcb69cfcf-wwhmp      1/1     Running   0          3h29m nginx-deploy-v2-5df7f9f88b-hk2z9   1/1     Running   0          59s nginx-deploy-v2-5df7f9f88b-phbgx   1/1     Running   0          59s [root@k8s-master11 ~]# kubectl get po -o wide |grep deploy nginx-deploy-5dcb69cfcf-bxkpf      1/1     Running   0          3h29m   10.244.2.4   k8s-node02     <none>           <none> nginx-deploy-5dcb69cfcf-wwhmp      1/1     Running   0          3h29m   10.244.3.4   k8s-node01     <none>           <none> nginx-deploy-v2-5df7f9f88b-hk2z9   1/1     Running   0          84s     10.244.2.5   k8s-node02     <none>           <none> nginx-deploy-v2-5df7f9f88b-phbgx   1/1     Running   0          84s     10.244.4.2   k8s-master13   <none>           <none> [root@k8s-master11 ~]# kubectl get svc -o wide     NAME           TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)   AGE     SELECTOR kubernetes     ClusterIP   10.96.0.1       <none>        443/TCP   3h26m   <none> nginx-svc      ClusterIP   10.102.69.189   <none>        80/TCP    3h25m   name=nginx-app nginx-svc-v2   ClusterIP   10.104.92.9     <none>        80/TCP    92s     name=nginx-app-v2 [root@k8s-master11 ~]# kubectl get ingress -o wide    NAME               HOSTS          ADDRESS   PORTS   AGE nginx-ingress      www.zzx.com              80      3h25m nginx-ingress-v2   www.zzx2.com             80      2m

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1	<br>ingress-control的ng配置自动会新增如下

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## start server www.zzx2.com     server {             server_name www.zzx2.com ;               listen 80;               set $proxy_upstream_name "-";             set $pass_access_scheme $scheme;             set $pass_server_port $server_port;             set $best_http_host $http_host;             set $pass_port $pass_server_port;               location / {                       set $namespace      "default";                     set $ingress_name   "nginx-ingress-v2";                     set $service_name   "nginx-svc-v2";                     set $service_port   "80";                     set $location_path  "/";                       rewrite_by_lua_block {                             lua_ingress.rewrite({                                     force_ssl_redirect = false,                                     use_port_in_redirects = false,                             })                             balancer.rewrite()                             plugins.run()                     }                       header_filter_by_lua_block {                               plugins.run()                     }                     body_filter_by_lua_block {                       }                       log_by_lua_block {                               balancer.log()                               monitor.call()                               plugins.run()                     }                       port_in_redirect off;                       set $balancer_ewma_score -1;                     set $proxy_upstream_name    "default-nginx-svc-v2-80";                     set $proxy_host             $proxy_upstream_name;                       set $proxy_alternative_upstream_name "";                       client_max_body_size                    1m;                       proxy_set_header Host                   $best_http_host;                       # Pass the extracted client certificate to the backend                       # Allow websocket connections                     proxy_set_header                        Upgrade           $http_upgrade;                       proxy_set_header                        Connection        $connection_upgrade;                       proxy_set_header X-Request-ID           $req_id;                     proxy_set_header X-Real-IP              $the_real_ip;                       proxy_set_header X-Forwarded-For        $the_real_ip;                       proxy_set_header X-Forwarded-Host       $best_http_host;                     proxy_set_header X-Forwarded-Port       $pass_port;                     proxy_set_header X-Forwarded-Proto      $pass_access_scheme;                       proxy_set_header X-Original-URI         $request_uri;                       proxy_set_header X-Scheme               $pass_access_scheme;                       # Pass the original X-Forwarded-For                     proxy_set_header X-Original-Forwarded-For $http_x_forwarded_for;                       # mitigate HTTPoxy Vulnerability                     # https://www.nginx.com/blog/mitigating-the-httpoxy-vulnerability-with-nginx/                     proxy_set_header Proxy                  "";                       # Custom headers to proxied server                       proxy_connect_timeout                   5s;                     proxy_send_timeout                      60s;                     proxy_read_timeout                      60s;                       proxy_buffering                         off;                     proxy_buffer_size                       4k;                     proxy_buffers                           4 4k;                     proxy_request_buffering                 on;                       proxy_http_version                      1.1;                       proxy_cookie_domain                     off;                     proxy_cookie_path                       off;                       # In case of errors try the next upstream server before returning an error                     proxy_next_upstream                     error timeout;                     proxy_next_upstream_timeout             0;                     proxy_next_upstream_tries               3;                       proxy_pass http://upstream_balancer;                       proxy_redirect                          off;               }       }     ## end server www.zzx2.com

　　修改hosts添加  192.168.1.123 www.zzx2.com

浏览器访问http://www.zzx2.com/会指向 v2版的ng

 linux下就用     curl 192.168.1.123:80    -H "Host:www.zzx.com"         curl 192.168.1.123:80    -H "Host:www.zzx2.com"

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[root@k8s-master12 .kube]#    curl 192.168.1.123:80      -H "Host:www.zzx.com" Hello MyApp | Version: v1 | <a href="hostname.html">Pod Name</a>   [root@k8s-master12 .kube]#      curl 192.168.1.123:80    -H "Host:www.zzx2.com" Hello MyApp | Version: v2 | <a href="hostname.html">Pod Name</a>

　　

 

ingress path的用法

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[root@k8s-master13 ~]# kubectl get ingress NAME               HOSTS         ADDRESS   PORTS   AGE nginx-ingress      www.zzx.com             80      9d nginx-ingress-v2   www.zzx.com             80      47h   [root@k8s-master13 ~]# kubectl get ingress/nginx-ingress  -o yaml apiVersion: extensions/v1beta1 kind: Ingress metadata:   annotations:     kubectl.kubernetes.io/last-applied-configuration: |       {"apiVersion":"extensions/v1beta1","kind":"Ingress","metadata":{"annotations":{},"name":"nginx-ingress","namespace":"default"},"spec":{"rules":[{"host":"www.zzx.com","http":{"paths":[{"backend":{"serviceName":"nginx-svc","servicePort":80},"path":"/"}]}}]}}   creationTimestamp: "2022-03-27T07:58:24Z"   generation: 5   name: nginx-ingress   namespace: default   resourceVersion: "157685"   selfLink: /apis/extensions/v1beta1/namespaces/default/ingresses/nginx-ingress   uid: ec81c829-b657-4901-b276-1a6bd6b82944 spec:   rules:   - host: www.zzx.com     http:       paths:       - backend:           serviceName: nginx-svc           servicePort: 80         path: /zzx status:   loadBalancer: {}     [root@k8s-master13 ~]# kubectl get ingress/nginx-ingress-v2  -o yaml apiVersion: extensions/v1beta1 kind: Ingress metadata:   annotations:     kubectl.kubernetes.io/last-applied-configuration: |       {"apiVersion":"extensions/v1beta1","kind":"Ingress","metadata":{"annotations":{},"name":"nginx-ingress-v2","namespace":"default"},"spec":{"rules":[{"host":"www.zzx.com","http":{"paths":[{"backend":{"serviceName":"nginx-svc-v2","servicePort":80},"path":"/hostname.html/"}]}}]}}   creationTimestamp: "2022-04-03T10:38:58Z"   generation: 11   name: nginx-ingress-v2   namespace: default   resourceVersion: "157716"   selfLink: /apis/extensions/v1beta1/namespaces/default/ingresses/nginx-ingress-v2   uid: 56c57cd0-0b2c-4b93-b263-2cbad168d286 spec:   rules:   - host: www.zzx.com     http:       paths:       - backend:           serviceName: nginx-svc-v2           servicePort: 80         path: /yj status:   loadBalancer: {}     curl http://www.zzx.com/yj    会访问 nginx-svc-v2 curl http://www.zzx.com/zzx  会访问 nginx-svc 跟openshift的添加router类似，同一个域名访问不同的deployment

　　ng配置

location = /yj {
alias /etc/hosts;
}