.<\/p>\n
<\/p>\n
Kubernetes Networking<\/span> Network Plugins<\/span><\/p>\n Services<\/span><\/p>\n Configuring Services<\/span><\/p>\n Demo: Creating Services<\/span><\/p>\n Let’s demonstrate creating services:<\/p>\n <\/p>\n Ingress <\/span><\/p>\n <\/p>\n Installing the Nginx Ingress Controller<\/span><\/p>\n Before we can use the ingress we must ensure that ingress controler is installed. In minikube there is no ingress controller so we must install it using helm.<\/p>\n <\/p>\n Installing the Nginx Ingress Controller – part 2<\/span><\/p>\n Now, let’s edit ngninx svc<\/p>\n and disturb the selector label<\/p>\n We see that the service is unavailable now:<\/p>\n So, if you have ever problem in ingress you might have investigate what is going on in the service to fix your problem.<\/p>\n Managing Ingress Rules<\/span><\/p>\n IngressClass<\/span><\/p>\n <\/p>\n Configuring Ingress Rules<\/span><\/p>\n As we see the endpoint “newdep” not fount and we must fix it:<\/p>\n Configuring Ingress Rules\u00a0 – part 2<\/span><\/p>\n Now everything works. Thats how you can use rules.<\/p>\n Lots of useful creating ingress examples you can see when you type:<\/p>\n Using Port Forwarding<\/span><\/p>\n It was a siple example of port-forwarding.<\/p>\n <\/p>\n Lab: Managing Networking<\/span><\/p>\n We get Welcome to nginx because we do have a default ingressClass. If you don’t have a default IngressClass this doesn’t work.<\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":" .<\/p>\n","protected":false},"author":2,"featured_media":5956,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[99],"tags":[],"_links":{"self":[{"href":"http:\/\/miro.borodziuk.eu\/index.php\/wp-json\/wp\/v2\/posts\/5271"}],"collection":[{"href":"http:\/\/miro.borodziuk.eu\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/miro.borodziuk.eu\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/miro.borodziuk.eu\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/miro.borodziuk.eu\/index.php\/wp-json\/wp\/v2\/comments?post=5271"}],"version-history":[{"count":24,"href":"http:\/\/miro.borodziuk.eu\/index.php\/wp-json\/wp\/v2\/posts\/5271\/revisions"}],"predecessor-version":[{"id":5473,"href":"http:\/\/miro.borodziuk.eu\/index.php\/wp-json\/wp\/v2\/posts\/5271\/revisions\/5473"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/miro.borodziuk.eu\/index.php\/wp-json\/wp\/v2\/media\/5956"}],"wp:attachment":[{"href":"http:\/\/miro.borodziuk.eu\/index.php\/wp-json\/wp\/v2\/media?parent=5271"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/miro.borodziuk.eu\/index.php\/wp-json\/wp\/v2\/categories?post=5271"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/miro.borodziuk.eu\/index.php\/wp-json\/wp\/v2\/tags?post=5271"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nIn Kubernetes, networking happens at different levels:<\/p>\n\n
\n
\n
\n
\n
\nService can be reached from outside the cluster at nodeip:nodeport<\/li>\n
\neither NodePort- or ClusterIP-based Services<\/li>\n\n
kubectl expose<\/code> to expose applications through their Pods, ReplicaSet or Deployment (recommended)<\/li>\nkubectl create service<\/code> as an alternative<\/li>\n<\/ul>\n\n
kubectl create deploy webshop --image=nginx --replicas=3 <\/code><\/li>\nkubectl get pods --selector app=webshop -o wide <\/code><\/li>\nkubectl expose deploy webshop --type NodePort --port=80 <\/code><\/li>\nkubectl describe svc webshop <\/code><\/li>\nkubectl get svc <\/code><\/li>\ncurl nodeip:nodeport<\/code><\/li>\n<\/ul>\n[root@k8s cka]# kubectl create deploy webshop --image=nginx --replicas=3\r\ndeployment.apps\/webshop created\r\n\r\n[root@k8s cka]# kubectl get pods --selector app=webshop -o wide\r\nNAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES\r\nwebshop-7f9fd49d4c-92nj2 1\/1 Running 0 32s 10.244.0.24 k8s.example.pl <none> <none>\r\nwebshop-7f9fd49d4c-kqllw 1\/1 Running 0 32s 10.244.0.23 k8s.example.pl <none> <none>\r\nwebshop-7f9fd49d4c-x2czc 1\/1 Running 0 32s 10.244.0.25 k8s.example.pl <none> <none>\r\n\r\n[root@k8s cka]# kubectl expose deploy webshop --type=NodePort --port=80\r\nservice\/webshop exposed\r\n\r\n[root@k8s cka]# kubectl get all --selector app=webshop\r\nNAME READY STATUS RESTARTS AGE\r\npod\/webshop-7f9fd49d4c-92nj2 1\/1 Running 0 92m\r\npod\/webshop-7f9fd49d4c-kqllw 1\/1 Running 0 92m\r\npod\/webshop-7f9fd49d4c-x2czc 1\/1 Running 0 92m\r\n\r\nNAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE\r\nservice\/webshop NodePort 10.109.119.90 <none> 80:32064\/TCP 27s\r\n\r\nNAME READY UP-TO-DATE AVAILABLE AGE\r\ndeployment.apps\/webshop 3\/3 3 3 92m\r\n\r\nNAME DESIRED CURRENT READY AGE\r\nreplicaset.apps\/webshop-7f9fd49d4c 3 3 3 92m\r\n\r\n[root@k8s cka]# kubectl describe svc webshop\r\nName: webshop\r\nNamespace: default\r\nLabels: app=webshop\r\nAnnotations: <none>\r\nSelector: app=webshop\r\nType: NodePort\r\nIP Family Policy: SingleStack\r\nIP Families: IPv4\r\nIP: 10.109.119.90\r\nIPs: 10.109.119.90\r\nPort: <unset> 80\/TCP\r\nTargetPort: 80\/TCP\r\nNodePort: <unset> 32064\/TCP\r\nEndpoints: 10.244.0.23:80,10.244.0.24:80,10.244.0.25:80\r\nSession Affinity: None\r\nExternal Traffic Policy: Cluster\r\nEvents: <none>\r\n[root@k8s cka]# kubectl get svc webshop\r\nNAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE\r\nwebshop NodePort 10.109.119.90 <none> 80:32064\/TCP 82s\r\n\r\n[root@k8s cka]# curl k8s.example.pl:32064\r\n<!DOCTYPE html>\r\n<html>\r\n<head>\r\n<title>Welcome to nginx!<\/title>\r\n<style>\r\nhtml { color-scheme: light dark; }\r\nbody { width: 35em; margin: 0 auto;\r\nfont-family: Tahoma, Verdana, Arial, sans-serif; }\r\n<\/style>\r\n<\/head>\r\n<body>\r\n<h1>Welcome to nginx!<\/h1>\r\n<p>If you see this page, the nginx web server is successfully installed and\r\nworking. Further configuration is required.<\/p>\r\n\r\n<p>For online documentation and support please refer to\r\n<a href=\"http:\/\/nginx.org\/\">nginx.org<\/a>.<br\/>\r\nCommercial support is available at\r\n<a href=\"http:\/\/nginx.com\/\">nginx.com<\/a>.<\/p>\r\n\r\n<p><em>Thank you for using nginx.<\/em><\/p>\r\n<\/body>\r\n<\/html>\r\n<\/pre>\n\n
\n
\nprovided by the load balancer<\/p>\n\n
\nbased virtual hosting.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n
helm upgrade --install ingress-nginx ingress-nginx --repo https:\/\/kubernetes.github.io\/ingress-nginx --namespace ingress-nginx --create-namespace <\/code><\/li>\nkubectl get pods -n ingress-nginx <\/code><\/li>\nkubectl create deploy nginxsvc --image=nginx --port=80 <\/code><\/li>\nkubectl expose deploy nginxsvc<\/code><\/li>\n<\/ul>\n[root@k8s cka]# helm upgrade --install ingress-nginx ingress-nginx --repo https:\/\/kubernetes.github.io\/ingress-nginx --namespace ingress-nginx -- create-namespace\r\nError: \"helm upgrade\" requires 2 arguments\r\n\r\nUsage: helm upgrade [RELEASE] [CHART] [flags]\r\n[root@k8s cka]# helm upgrade --install ingress-nginx ingress-nginx --repo https:\/\/kubernetes.github.io\/ingress-nginx --namespace ingress-nginx --create-namespace\r\nRelease \"ingress-nginx\" does not exist. Installing it now.\r\nNAME: ingress-nginx\r\nLAST DEPLOYED: Fri Feb 2 15:08:51 2024\r\nNAMESPACE: ingress-nginx\r\nSTATUS: deployed\r\nREVISION: 1\r\nTEST SUITE: None\r\nNOTES:\r\nThe ingress-nginx controller has been installed.\r\nIt may take a few minutes for the load balancer IP to be available.\r\nYou can watch the status by running 'kubectl get service --namespace ingress-nginx ingress-nginx-controller --output wide --watch'\r\n\r\nAn example Ingress that makes use of the controller:\r\n apiVersion: networking.k8s.io\/v1\r\n kind: Ingress\r\n metadata:\r\n name: example\r\n namespace: foo\r\n spec:\r\n ingressClassName: nginx\r\n rules:\r\n - host: www.example.com\r\n http:\r\n paths:\r\n - pathType: Prefix\r\n backend:\r\n service:\r\n name: exampleService\r\n port:\r\n number: 80\r\n path: \/\r\n # This section is only required if TLS is to be enabled for the Ingress\r\n tls:\r\n - hosts:\r\n - www.example.com\r\n secretName: example-tls\r\n\r\nIf TLS is enabled for the Ingress, a Secret containing the certificate and key must also be provided:\r\n\r\n apiVersion: v1\r\n kind: Secret\r\n metadata:\r\n name: example-tls\r\n namespace: foo\r\n data:\r\n tls.crt: <base64 encoded cert>\r\n tls.key: <base64 encoded key>\r\n type: kubernetes.io\/tls\r\n\r\n[root@k8s cka]# kubectl get all -n ingress-nginx\r\nNAME READY STATUS RESTARTS AGE\r\npod\/ingress-nginx-controller-6858749594-27tm9 1\/1 Running 0 5m15s\r\n\r\nNAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE\r\nservice\/ingress-nginx-controller LoadBalancer 10.98.212.3 <pending> 80:31333\/TCP,443:31463\/TCP 5m15s\r\nservice\/ingress-nginx-controller-admission ClusterIP 10.105.231.72 <none> 443\/TCP 5m15s\r\n\r\nNAME READY UP-TO-DATE AVAILABLE AGE\r\ndeployment.apps\/ingress-nginx-controller 1\/1 1 1 5m15s\r\n\r\nNAME DESIRED CURRENT READY AGE\r\nreplicaset.apps\/ingress-nginx-controller-6858749594 1 1 1 5m15s\r\n\r\n[root@k8s cka]# kubectl create deploy nginxsvc --image=nginx --port=80\r\ndeployment.apps\/nginxsvc created\r\n\r\n[root@k8s cka]# kubectl expose deploy nginxsvc\r\nservice\/nginxsvc exposed\r\n\r\n[root@k8s cka]# kubectl get all --selector app=nginxsvc\r\nNAME READY STATUS RESTARTS AGE\r\npod\/nginxsvc-5f8b7d4f4d-dtrs7 1\/1 Running 0 85s\r\n\r\nNAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE\r\nservice\/nginxsvc ClusterIP 10.104.155.180 <none> 80\/TCP 72s\r\n\r\nNAME READY UP-TO-DATE AVAILABLE AGE\r\ndeployment.apps\/nginxsvc 1\/1 1 1 85s\r\n\r\nNAME DESIRED CURRENT READY AGE\r\nreplicaset.apps\/nginxsvc-5f8b7d4f4d 1 1 1 85s\r\n<\/pre>\n
\n
kubectl create ingress nginxsvc --class=nginx --rule=nginxsvc.info\/*=nginxsvc:80<\/code><\/li>\nkubectl port-forward -n ingress-nginx svc\/ingress-nginx-controller 8080:80 &<\/code> (run in background)<\/li>\n echo \"127.0.0.1 nginxsvc.info\" >> \/etc\/hosts<\/code><\/li>\ncurl nginxsvc.info:8080<\/code><\/li>\n<\/ul>\n[root@k8s cka]# kubectl create ingress nginxsvc --class=nginx --rule=nginxsvc.info\/*=nginxsvc:80\r\ningress.networking.k8s.io\/nginxsvc created\r\n\r\n[root@k8s cka]# kubectl port-forward -n ingress-nginx svc\/ingress-nginx-controller 8080:80 & \r\n[1] 295061 \r\n[root@k8s cka]# Forwarding from 127.0.0.1:8080 -> 80 Forwarding from [::1]:8080 -> 80\r\n[root@k8s cka]# vi \/etc\/hosts\r\n\r\n[root@k8s cka]# ping nginxsvc.info\r\nPING host.minikube.internal (127.0.0.1) 56(84) bytes of data.\r\n64 bytes from localhost (127.0.0.1): icmp_seq=1 ttl=64 time=0.106 ms\r\n^C\r\n--- host.minikube.internal ping statistics ---\r\n1 packets transmitted, 1 received, 0% packet loss, time 0ms\r\nrtt min\/avg\/max\/mdev = 0.106\/0.106\/0.106\/0.000 ms\r\n\r\n\r\n[root@k8s cka]# curl nginxsvc.info:8080\r\nHandling connection for 8080\r\n<!DOCTYPE html>\r\n<html>\r\n<head>\r\n<title>Welcome to nginx!<\/title>\r\n<style>\r\nhtml { color-scheme: light dark; }\r\nbody { width: 35em; margin: 0 auto;\r\nfont-family: Tahoma, Verdana, Arial, sans-serif; }\r\n<\/style>\r\n<\/head>\r\n<body>\r\n<h1>Welcome to nginx!<\/h1>\r\n<p>If you see this page, the nginx web server is successfully installed and\r\nworking. Further configuration is required.<\/p>\r\n\r\n<p>For online documentation and support please refer to\r\n<a href=\"http:\/\/nginx.org\/\">nginx.org<\/a>.<br\/>\r\nCommercial support is available at\r\n<a href=\"http:\/\/nginx.com\/\">nginx.com<\/a>.<\/p>\r\n\r\n<p><em>Thank you for using nginx.<\/em><\/p>\r\n<\/body>\r\n<\/html>\r\n\r\n\r\n[root@k8s cka]# kubectl get all --selector app=nginxsvc\r\nNAME READY STATUS RESTARTS AGE\r\npod\/nginxsvc-5f8b7d4f4d-dtrs7 1\/1 Running 0 20m\r\n\r\nNAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE\r\nservice\/nginxsvc ClusterIP 10.104.155.180 <none> 80\/TCP 20m\r\n\r\nNAME READY UP-TO-DATE AVAILABLE AGE\r\ndeployment.apps\/nginxsvc 1\/1 1 1 20m\r\n\r\nNAME DESIRED CURRENT READY AGE\r\nreplicaset.apps\/nginxsvc-5f8b7d4f4d 1 1 1 20m\r\n\r\n[root@k8s cka]# kubectl get ingress\r\nNAME CLASS HOSTS ADDRESS PORTS AGE\r\nnginxsvc nginx nginxsvc.info 80 10m\r\n\r\n[root@k8s cka]# kubectl describe ingress nginxsvc\r\nName: nginxsvc\r\nLabels: <none>\r\nNamespace: default\r\nAddress:\r\nIngress Class: nginx\r\nDefault backend: <default>\r\nRules:\r\n Host Path Backends\r\n ---- ---- --------\r\n nginxsvc.info\r\n \/ nginxsvc:80 (10.244.0.29:80)\r\nAnnotations: <none>\r\nEvents:\r\n Type Reason Age From Message\r\n ---- ------ ---- ---- -------\r\n Normal Sync 10m nginx-ingress-controller Scheduled for sync\r\n<\/pre>\n[root@k8s cka]# kubectl edit svc nginxsvc\r\n<\/pre>\n
apiVersion: v1\r\nkind: Service\r\nmetadata:\r\n creationTimestamp: \"2024-02-02T20:15:42Z\"\r\n labels:\r\n app: nginxsvc\r\n name: nginxsvc\r\n namespace: default\r\n resourceVersion: \"98698\"\r\n uid: f2dfba3e-1c47-443d-a969-a78cd81cf47c\r\nspec:\r\n clusterIP: 10.104.155.180\r\n clusterIPs:\r\n - 10.104.155.180\r\n internalTrafficPolicy: Cluster\r\n ipFamilies:\r\n - IPv4\r\n ipFamilyPolicy: SingleStack\r\n ports:\r\n - port: 80\r\n protocol: TCP\r\n targetPort: 80\r\n selector:\r\n app: nginxSVC\r\n# instaed nginxsvc\r\n sessionAffinity: None\r\n type: ClusterIP\r\nstatus:\r\n loadBalancer: {}\r\n<\/pre>\n[root@k8s cka]# curl nginxsvc.info:8080\r\nHandling connection for 8080\r\n<html>\r\n<head><title>503 Service Temporarily Unavailable<\/title><\/head>\r\n<body>\r\n<center><h1>503 Service Temporarily Unavailable<\/h1><\/center>\r\n<hr><center>nginx<\/center>\r\n<\/body>\r\n<\/html>\r\n<\/pre>\n
\n
kubectl create ingress<\/code> to create rules<\/li>\n\n
kubectl create ingress mygress --rule=\"\/mygress=mygress:80\" --rule=\"yourgress=yourgress:80\"<\/code><\/li>\n<\/ul>\n<\/li>\n\n
kubectl create ingress nginxsvc --class=nginx --rule=nginxsvc.info\/*=nginxsvc:80 --rule=otherserver.org\/*=otherserver:80<\/code><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n
\nconfiguration<\/li>\n--class<\/code> option should be used to implement the role on a specific Ingress controller\n\n
kubectl get ingressclass -o yaml<\/code> to investigate its content<\/li>\n<\/ul>\n[root@k8s cka]# kubectl get ingressclass\r\nNAME CONTROLLER PARAMETERS AGE\r\nnginx k8s.io\/ingress-nginx <none> 49m\r\n\r\n[root@k8s cka]# kubectl get ingressclass -o yaml\r\napiVersion: v1\r\nitems:\r\n- apiVersion: networking.k8s.io\/v1\r\n kind: IngressClass\r\n metadata:\r\n annotations:\r\n meta.helm.sh\/release-name: ingress-nginx\r\n meta.helm.sh\/release-namespace: ingress-nginx\r\n creationTimestamp: \"2024-02-02T20:09:01Z\"\r\n generation: 1\r\n labels:\r\n app.kubernetes.io\/component: controller\r\n app.kubernetes.io\/instance: ingress-nginx\r\n app.kubernetes.io\/managed-by: Helm\r\n app.kubernetes.io\/name: ingress-nginx\r\n app.kubernetes.io\/part-of: ingress-nginx\r\n app.kubernetes.io\/version: 1.9.6\r\n helm.sh\/chart: ingress-nginx-4.9.1\r\n name: nginx\r\n resourceVersion: \"98227\"\r\n uid: 6e638977-b341-46c3-a469-cfb655cd4dac\r\n spec:\r\n controller: k8s.io\/ingress-nginx\r\nkind: List\r\nmetadata:\r\n resourceVersion: \"\"\r\n[root@k8s cka]#\r\n\r\n[root@k8s cka]# kubectl edit ingressclass nginx\r\ningressclass.networking.k8s.io\/nginx edited\r\n\r\n[root@k8s cka]# kubectl get ingressclass -o yaml\r\napiVersion: v1\r\nitems:\r\n- apiVersion: networking.k8s.io\/v1\r\n kind: IngressClass\r\n metadata:\r\n annotations:\r\n ingressclass.kubernetes.io\/is-default-class: \"true\"\r\n meta.helm.sh\/release-name: ingress-nginx\r\n meta.helm.sh\/release-namespace: ingress-nginx\r\n creationTimestamp: \"2024-02-02T20:09:01Z\"\r\n generation: 1\r\n labels:\r\n app.kubernetes.io\/component: controller\r\n app.kubernetes.io\/instance: ingress-nginx\r\n app.kubernetes.io\/managed-by: Helm\r\n app.kubernetes.io\/name: ingress-nginx\r\n app.kubernetes.io\/part-of: ingress-nginx\r\n app.kubernetes.io\/version: 1.9.6\r\n helm.sh\/chart: ingress-nginx-4.9.1\r\n name: nginx\r\n resourceVersion: \"101308\"\r\n uid: 6e638977-b341-46c3-a469-cfb655cd4dac\r\n spec:\r\n controller: k8s.io\/ingress-nginx\r\nkind: List\r\nmetadata:\r\n resourceVersion: \"\"\r\n<\/pre>\n
\n
kubectl get deployment <\/code><\/li>\nkubectl get svc webshop <\/code><\/li>\nkubectl create ingress webshop-ingress --rule=\"\/=webshop:80\" --rule=\"\/hello=newdep:8080\" <\/code><\/li>\nsudo vim \/etc\/hosts <\/code>\n\n
127.0.0.1 webshop.info <\/code><\/li>\n<\/ul>\n<\/li>\nkubectl get ingress <\/code><\/li>\nkubectl describe ingress webshop-ingress<\/code><\/li>\n<\/ul>\n[root@k8s cka]# kubectl get deploy\r\nNAME READY UP-TO-DATE AVAILABLE AGE\r\nfirstnginx 4\/4 4 4 2d1h\r\nnginxsvc 1\/1 1 1 54m\r\nwebserver 1\/1 1 1 7h50m\r\nwebshop 3\/3 3 3 3h19m\r\n\r\n[root@k8s cka]# kubectl get svc webshop\r\nNAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE\r\nwebshop NodePort 10.109.119.90 <none> 80:32064\/TCP 107m\r\n\r\n[root@k8s cka]# kubectl create ingress webshop-ingress --rule=\"\/=webshop:80\" --rule=\"\/hello=newdep:8080\"\r\ningress.networking.k8s.io\/webshop-ingress created\r\n\r\n[root@k8s cka]# vi \/etc\/hosts\r\n[root@k8s cka]# ping webshop.info\r\nPING host.minikube.internal (127.0.0.1) 56(84) bytes of data.\r\n64 bytes from localhost (127.0.0.1): icmp_seq=1 ttl=64 time=0.092 ms\r\n64 bytes from localhost (127.0.0.1): icmp_seq=2 ttl=64 time=0.041 ms\r\n^C\r\n--- host.minikube.internal ping statistics ---\r\n2 packets transmitted, 2 received, 0% packet loss, time 1021ms\r\nrtt min\/avg\/max\/mdev = 0.041\/0.066\/0.092\/0.026 ms\r\n\r\n[root@k8s cka]# kubectl get ingress\r\nNAME CLASS HOSTS ADDRESS PORTS AGE\r\nnginxsvc nginx nginxsvc.info 80 45m\r\nwebshop-ingress nginx * 80 67s\r\n\r\n[root@k8s cka]# kubectl describe ingress webshop-ingress\r\nName: webshop-ingress\r\nLabels: <none>\r\nNamespace: default\r\nAddress:\r\nIngress Class: nginx\r\nDefault backend: <default>\r\nRules:\r\n Host Path Backends\r\n ---- ---- --------\r\n *\r\n \/ webshop:80 (10.244.0.23:80,10.244.0.24:80,10.244.0.25:80)\r\n \/hello newdep:8080 (<error: endpoints \"newdep\" not found>)\r\nAnnotations: <none>\r\nEvents:\r\n Type Reason Age From Message\r\n ---- ------ ---- ---- -------\r\n Normal Sync 72s nginx-ingress-controller Scheduled for sync\r\n<\/pre>\n
\n
kubectl create deployment newdep --image=gcr.io\/google-samples\/hello-app:2.0<\/code><\/li>\nkubectl expose deployment newdep --port=8080<\/code><\/li>\nkubectl describe ingress webshop-ingress<\/code><\/li>\n<\/ul>\n[root@k8s cka]# kubectl create deployment newdep --image=gcr.io\/google-samples\/hello-app:2.0\r\ndeployment.apps\/newdep created\r\n\r\n[root@k8s cka]# kubectl expose deployment newdep --port=8080\r\nservice\/newdep exposed\r\n\r\n[root@k8s cka]# kubectl describe ingress webshop-ingress\r\n\r\nName: webshop-ingress\r\nLabels: <none>\r\nNamespace: default\r\nAddress:\r\nIngress Class: nginx\r\nDefault backend: <default>\r\nRules:\r\n Host Path Backends\r\n ---- ---- --------\r\n *\r\n \/ webshop:80 (10.244.0.23:80,10.244.0.24:80,10.244.0.25:80)\r\n \/hello newdep:8080 (10.244.0.30:8080)\r\nAnnotations: <none>\r\nEvents:\r\n Type Reason Age From Message\r\n ---- ------ ---- ---- -------\r\n Normal Sync 9m21s nginx-ingress-controller Scheduled for sync\r\n<\/pre>\n
[root@k8s cka]# kubectl create ingress -h\r\nExamples:\r\n # Create a single ingress called 'simple' that directs requests to foo.com\/bar to svc\r\n # svc1:8080 with a TLS secret \"my-cert\"\r\n kubectl create ingress simple --rule=\"foo.com\/bar=svc1:8080,tls=my-cert\"\r\n<\/pre>\n
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kubectl port-forward<\/code> can be used to connect to applications for analyzing and troubleshooting<\/li>\n kubectl port-forward mypod 1235:80<\/code> to forward local port 1235 to Pod port 80<\/li>\n Ctrl-z<\/code> or start with a &<\/code> at the end of the kubectl port-forward<\/code> command<\/li>\n<\/ul>\n[root@k8s cka]# kubectl get pods\r\nNAME READY STATUS RESTARTS AGE\r\ndeploydaemon-zzllp 1\/1 Running 0 24h\r\nfirstnginx-d8679d567-249g9 1\/1 Running 0 2d1h\r\nfirstnginx-d8679d567-66c4s 1\/1 Running 0 2d1h\r\nfirstnginx-d8679d567-72qbd 1\/1 Running 0 2d1h\r\nfirstnginx-d8679d567-rhhlz 1\/1 Running 0 32h\r\ninit-demo 1\/1 Running 0 34h\r\nlab4-pod 1\/1 Running 0 6h57m\r\nmorevol 2\/2 Running 40 (3m53s ago) 20h\r\nmydaemon-d4dcd 1\/1 Running 0 24h\r\nnewdep-749c9b5675-2x9mb 1\/1 Running 0 10m\r\nnginxsvc-5f8b7d4f4d-dtrs7 1\/1 Running 0 74m\r\npv-pod 1\/1 Running 0 19h\r\nsleepy 1\/1 Running 24 (31m ago) 35h\r\ntestpod 1\/1 Running 0 2d1h\r\ntwo-containers 2\/2 Running 143 (70s ago) 32h\r\nweb-0 1\/1 Running 0 37h\r\nweb-1 1\/1 Running 0 24h\r\nweb-2 1\/1 Running 0 24h\r\nwebserver-76d44586d-8gqhf 1\/1 Running 0 7h57m\r\nwebshop-7f9fd49d4c-92nj2 1\/1 Running 0 3h40m\r\nwebshop-7f9fd49d4c-kqllw 1\/1 Running 0 3h40m\r\nwebshop-7f9fd49d4c-x2czc 1\/1 Running 0 3h40m\r\n\r\n[root@k8s cka]# kubectl port-forward pods\/webserver-76d44586d-8gqhf 1235:80 &\r\n[3] 307824\r\n[root@k8s cka]# Forwarding from 127.0.0.1:1235 -> 80\r\nForwarding from [::1]:1235 -> 80\r\n\r\n[root@k8s cka]# curl localhost:1235\r\nHandling connection for 1235\r\nhello world\r\n<\/pre>\n
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[root@k8s cka]# kubectl create deployment apples --image=nginx --replicas=3\r\ndeployment.apps\/apples created\r\n\r\n[root@k8s cka]# kubectl expose deployment apples --port=80\r\nservice\/apples exposed\r\n\r\n[root@k8s cka]# kubectl create ingress apples --rule=\"my.fruit\/*=apples:80\"\r\ningress.networking.k8s.io\/apples created\r\n[root@k8s cka]# vim \/etc\/hosts\r\n[root@k8s cka]# cat \/etc\/hosts\r\n127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4\r\n::1 localhost localhost.localdomain localhost6 localhost6.localdomain6\r\n127.0.0.1 host.minikube.internal nginxsvc.info webshop.info my.fruit\r\n172.30.9.24 control-plane.minikube.internal\r\n\r\n[root@k8s cka]# curl my.fruit:8080\r\nHandling connection for 8080\r\n<!DOCTYPE html>\r\n<html>\r\n<head>\r\n<title>Welcome to nginx!<\/title>\r\n<style>\r\nhtml { color-scheme: light dark; }\r\nbody { width: 35em; margin: 0 auto;\r\nfont-family: Tahoma, Verdana, Arial, sans-serif; }\r\n<\/style>\r\n<\/head>\r\n<body>\r\n<h1>Welcome to nginx!<\/h1>\r\n<p>If you see this page, the nginx web server is successfully installed and\r\nworking. Further configuration is required.<\/p>\r\n\r\n<p>For online documentation and support please refer to\r\n<a href=\"http:\/\/nginx.org\/\">nginx.org<\/a>.<br\/>\r\nCommercial support is available at\r\n<a href=\"http:\/\/nginx.com\/\">nginx.com<\/a>.<\/p>\r\n\r\n<p><em>Thank you for using nginx.<\/em><\/p>\r\n<\/body>\r\n<\/html>\r\n<\/pre>\n