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2023-12-01

BIG-IP with Cluster-wide Ingress Controller

Architectures

bigip with cluster wide nginx.png

  • Nginx Controller has multiple replicas

  • Nginx Controller play as cluster-wide ingress control

  • BIGIP Virtual Server IP is the external enterence for all nginx replicas

  • bigip-ctlr deploy BIGIP Virtual Server nginx pod as pool member

Get Code
git clone https://github.com/cloudadc/container-ingress.git
cd container-ingress/nginx-ingress/bigip/cluster-wide/
Set up
// 1. deploy cluster wide nginx ingress controller
kubectl apply -f ns-and-sa.yaml
kubectl apply -f rbac.yaml
kubectl apply -f default-server-secret.yaml
kubectl apply -f nginx-config.yaml
kubectl apply -f vs-definition.yaml
kubectl apply -f vsr-definition.yaml
kubectl apply -f ts-definition.yaml
kubectl apply -f nginx-ingress.yaml

// 2. deploy bigip controller
kubectl create ns bigip-ctlr
kubectl create secret generic bigip-login --from-literal=username=admin --from-literal=password=admin.F5demo.com -n bigip-ctlr
kubectl create serviceaccount bigip-ctlr -n bigip-ctlr
kubectl apply -f rbac-cis.yaml
kubectl apply -f cis-nginx.yaml
kubectl apply -f nginx-ingress-svc.yaml
kubectl apply -f nginx-ingress-configmap.yaml

Examples

1. Set up
kubectl apply -f example-deploy.yaml
kubectl apply -f example-ingress.yaml
3. Check the nginx ingress controller pod log, all ingress be registered on each controller
for i in $(kubectl get pods -n nginx-ingress --no-headers | awk '{print $1}') ; do echo "$ kubectl logs $i -n nginx-ingress | grep nginxtest" ; kubectl logs $i -n nginx-ingress | grep nginxtest ; echo ; done
4. Test
for i in 1 2 3 4 ; do curl http://nginxtest0$i.example.com/coffee ; echo ; done
for i in 1 2 3 4 ; do curl http://nginxtest0$i.example.com/tea ; echo ; done
5. Check nginx access log
for i in $(kubectl get pods -n nginx-ingress --no-headers | awk '{print $1}') ; do echo "$ kubectl logs $i -n nginx-ingress | grep coffee" ; kubectl logs $i -n nginx-ingress | grep coffee ; echo ; done
$ kubectl logs nginx-ingress-658848c866-q9hmb -n nginx-ingress | grep coffee
10.1.10.61 - - [12/Jul/2020:10:15:50 +0000] "GET /coffee HTTP/1.1" 200 161 "-" "curl/7.29.0" "-"

$ kubectl logs nginx-ingress-658848c866-wgq7b -n nginx-ingress | grep coffee
10.1.10.61 - - [12/Jul/2020:10:15:50 +0000] "GET /coffee HTTP/1.1" 200 162 "-" "curl/7.29.0" "-"

$ kubectl logs nginx-ingress-658848c866-z9tcd -n nginx-ingress | grep coffee
10.1.10.61 - - [12/Jul/2020:10:15:50 +0000] "GET /coffee HTTP/1.1" 200 162 "-" "curl/7.29.0" "-"
10.1.10.61 - - [12/Jul/2020:10:15:50 +0000] "GET /coffee HTTP/1.1" 200 162 "-" "curl/7.29.0" "-"

for i in $(kubectl get pods -n nginx-ingress --no-headers | awk '{print $1}') ; do echo "$ kubectl logs $i -n nginx-ingress | grep tea" ; kubectl logs $i -n nginx-ingress | grep tea ; echo ; done
$ kubectl logs nginx-ingress-658848c866-q9hmb -n nginx-ingress | grep tea
10.1.10.61 - - [12/Jul/2020:10:16:37 +0000] "GET /tea HTTP/1.1" 200 155 "-" "curl/7.29.0" "-"

$ kubectl logs nginx-ingress-658848c866-wgq7b -n nginx-ingress | grep tea
10.1.10.61 - - [12/Jul/2020:10:16:37 +0000] "GET /tea HTTP/1.1" 200 156 "-" "curl/7.29.0" "-"

$ kubectl logs nginx-ingress-658848c866-z9tcd -n nginx-ingress | grep tea
10.1.10.61 - - [12/Jul/2020:10:16:36 +0000] "GET /tea HTTP/1.1" 200 156 "-" "curl/7.29.0" "-"
10.1.10.61 - - [12/Jul/2020:10:16:37 +0000] "GET /tea HTTP/1.1" 200 156 "-" "curl/7.29.0" "-"
NoteThe 4 continue request be 3 nginx controller with Least Connections Member algorithm.
6. Check config change
kubectl exec -it nginx-ingress-658848c866-z9tcd -n nginx-ingress -- bash
$ cd /etc/nginx/conf.d/
$ ls
nginxtest01-cafe-ingress.conf  nginxtest02-cafe-ingress.conf  nginxtest03-cafe-ingress.conf  nginxtest04-cafe-ingress.conf

$ cat nginxtest01-cafe-ingress.conf

upstream nginxtest01-cafe-ingress-nginxtest01.example.com-coffee-svc-80 {
	zone nginxtest01-cafe-ingress-nginxtest01.example.com-coffee-svc-80 256k;
	random two least_conn;

	server 10.244.1.21:8080 max_fails=1 fail_timeout=10s max_conns=0;
	server 10.244.2.235:8080 max_fails=1 fail_timeout=10s max_conns=0;

}

upstream nginxtest01-cafe-ingress-nginxtest01.example.com-tea-svc-80 {
	zone nginxtest01-cafe-ingress-nginxtest01.example.com-tea-svc-80 256k;
	random two least_conn;

	server 10.244.1.13:8080 max_fails=1 fail_timeout=10s max_conns=0;
	server 10.244.2.228:8080 max_fails=1 fail_timeout=10s max_conns=0;
	server 10.244.2.230:8080 max_fails=1 fail_timeout=10s max_conns=0;
}

server {
	listen 80;
	server_tokens on;
	server_name nginxtest01.example.com;

	location /tea {
		proxy_http_version 1.1;
		proxy_connect_timeout 60s;
		proxy_read_timeout 60s;
		proxy_send_timeout 60s;
		client_max_body_size 1m;
		proxy_set_header Host $host;
		proxy_set_header X-Real-IP $remote_addr;
		proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
		proxy_set_header X-Forwarded-Host $host;
		proxy_set_header X-Forwarded-Port $server_port;
		proxy_set_header X-Forwarded-Proto $scheme;
		proxy_buffering on;
		proxy_pass http://nginxtest01-cafe-ingress-nginxtest01.example.com-tea-svc-80;
	}

	location /coffee {
		proxy_http_version 1.1;
		proxy_connect_timeout 60s;
		proxy_read_timeout 60s;
		proxy_send_timeout 60s;
		client_max_body_size 1m;
		proxy_set_header Host $host;
		proxy_set_header X-Real-IP $remote_addr;
		proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
		proxy_set_header X-Forwarded-Host $host;
		proxy_set_header X-Forwarded-Port $server_port;
		proxy_set_header X-Forwarded-Proto $scheme;
		proxy_buffering on;
		proxy_pass http://nginxtest01-cafe-ingress-nginxtest01.example.com-coffee-svc-80;
	}
}

BIG-IP with Single-namespace Ingress Controller

Architectures

bigip nginx single namespace.png

  • Each namespace has reference a nginx controller

  • Each nginx Controller has multiple replicas

  • Nginx Controller play as single-namespace ingress control

  • BIGIP Virtual Server IP is the external enterence

  • bigip-ctlr deploy BIGIP Virtual Server nginx pod as pool member

Get Code
git clone https://github.com/cloudadc/container-ingress.git
cd container-ingress/nginx-ingress/bigip/single-namespace/
Set up
// 1. deploy single namespace nginx ingress controller
kubectl apply -f ns-and-sa.yaml
kubectl apply -f rbac.yaml
kubectl apply -f default-server-secret.yaml
kubectl apply -f nginx-config.yaml
kubectl apply -f vs-definition.yaml
kubectl apply -f vsr-definition.yaml
kubectl apply -f ts-definition.yaml
kubectl apply -f nginx-ingress-test01.yaml
kubectl apply -f nginx-ingress-test02.yaml

// 2. deploy bigip controller
kubectl create ns bigip-ctlr
kubectl create secret generic bigip-login --from-literal=username=admin --from-literal=password=admin.F5demo.com -n bigip-ctlr
kubectl create serviceaccount bigip-ctlr -n bigip-ctlr
kubectl apply -f rbac-cis.yaml
kubectl apply -f cis-nginx.yaml
kubectl apply -f nginx-ingress-svc.yaml
kubectl apply -f nginx-ingress-configmap.yaml

Examples

1. Set up
kubectl apply -f example-deploy.yaml
kubectl apply -f example-ingress.yaml
2. Test
curl http://nginxtest01.example.com/coffee
curl http://nginxtest01.example.com/tea

curl http://nginxtest02.example.com/coffee
curl http://nginxtest02.example.com/tea

BIG-IP with Ingress Controller for Specific Ingress Class

Architectures

nginx ingress class.png

  • Multiple nginx controller work parallel

  • Each nginx Controller has multiple replicas

  • Nginx Controller for specific ingress class

  • BIGIP Virtual Server IP is the external enterence

  • bigip-ctlr deploy BIGIP Virtual Server nginx pod as pool member

Get Code
git clone https://github.com/cloudadc/container-ingress.git
cd container-ingress/nginx-ingress/bigip/specific-ingress-class/
Set up
// 1. deploy Ingress Controller for Specific Ingress Class
kubectl apply -f ns-and-sa.yaml
kubectl apply -f rbac.yaml
kubectl apply -f default-server-secret.yaml
kubectl apply -f nginx-config.yaml
kubectl apply -f vs-definition.yaml
kubectl apply -f vsr-definition.yaml
kubectl apply -f ts-definition.yaml
kubectl apply -f nginx-ingress.yaml
kubectl apply -f nginx-ingress-fintech.yaml

// 2. deploy bigip controller
kubectl create ns bigip-ctlr
kubectl create secret generic bigip-login --from-literal=username=admin --from-literal=password=admin.F5demo.com -n bigip-ctlr
kubectl create serviceaccount bigip-ctlr -n bigip-ctlr
kubectl apply -f rbac-cis.yaml
kubectl apply -f cis-nginx.yaml
kubectl apply -f nginx-ingress-svc.yaml
kubectl apply -f nginx-ingress-configmap.yaml

Examples

1. Set up
kubectl apply -f example-deploy.yaml
kubectl apply -f example-ingress.yaml
kubectl apply -f example-ingress-fintech.yaml
2. Test
for i in {1..10} ; do curl http://nginxtest01.example.com/coffee ; curl http://nginxtest01.example.com/tea ; curl http://nginxtest02.example.com/coffee ; curl http://nginxtest02.example.com/tea ; done

for i in {1..10} ; do curl http://nginxtest03.example.com/coffee ; curl http://nginxtest03.example.com/tea ; curl http://nginxtest04.example.com/coffee ; curl http://nginxtest04.example.com/tea ; done
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