k8s ingress
https://www.cnblogs.com/hanxing/p/16062860.html
192.168.1.222 k8s-master11 m1
192.168.1.223 k8s-master12 m2192.168.1.224 k8s-master13 m3192.168.1.225 k8s-node01 n1192.168.1.226 k8s-node02 n2keepalived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
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
ingress-nginx-install.yml 如下：
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）
[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
[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
[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
[root@k8s-master11 ~]# kubectl apply -f ingress.yml deployment.extensions/nginx-deploy created service/nginx-svc created ingress.extensions/nginx-ingress created
ingress.yml 如下：
[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
检查
[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
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
验证第二个域名
修改配置文件
[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
[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
ingress-control的ng配置自动会新增如下
## 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"
[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
[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;
}
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