We have installed consul through helm charts on k8 cluster. Here, I have deployed one consul server and the rest are consul agents.
kubectl get pods
NAME READY STATUS RESTARTS AGE
consul-7csp9 1/1 Running 0 4h
consul-connect-injector-webhook-deployment-66d46867f6-wqtt7 1/1 Running 0 4h
consul-server-0 1/1 Running 0 4h
consul-sync-catalog-85f5654b89-9qblx 1/1 Running 0 4h
consul-x4mqq 1/1 Running 0 4h
We see that the nodes are registered onto the Consul Server. http://XX.XX.XX.XX/ui/kube/nodes
We have deployed an hello world application onto k8 cluster. This will bring-up Hello-World
kubectl get pods
NAME READY STATUS RESTARTS AGE
consul-7csp9 1/1 Running 0 4h
consul-connect-injector-webhook-deployment-66d46867f6-wqtt7 1/1 Running 0 4h
consul-server-0 1/1 Running 0 4h
consul-sync-catalog-85f5654b89-9qblx 1/1 Running 0 4h
consul-x4mqq 1/1 Running 0 4h
sampleapp-69bf9f84-ms55k 2/2 Running 0 4h
Below is the yaml file.
apiVersion: apps/v1
kind: Deployment
metadata:
name: sampleapp
spec:
replicas: 1
selector:
matchLabels:
app: sampleapp
template:
metadata:
labels:
app: sampleapp
annotations:
"consul.hashicorp.com/connect-inject": "true"
spec:
containers:
- name: sampleapp
image: "docker-dev-repo.aws.com/sampleapp-java/helloworld-service:a8c9f65-65"
ports:
- containerPort: 8080
name: http
Successful deployment of sampleapp, I see that sampleapp-proxy is registered in consul. and sampleapp-proxy is listed in kubernetes services. (This is because the toConsul and toK8S are passed as true during installation)
kubectl get services
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
consul ExternalName <none> consul.service.test <none> 4h
consul-connect-injector-svc ClusterIP XX.XX.XX.XX <none> 443/TCP 4h
consul-dns ClusterIP XX.XX.XX.XX <none> 53/TCP,53/UDP 4h
consul-server ClusterIP None <none> 8500/TCP,8301/TCP,8301/UDP,8302/TCP,8302/UDP,8300/TCP,8600/TCP,8600/UDP 4h
consul-ui LoadBalancer XX.XX.XX.XX XX.XX.XX.XX 80:32648/TCP 4h
dns-test-proxy ExternalName <none> dns-test-proxy.service.test <none> 2h
fluentd-gcp-proxy ExternalName <none> fluentd-gcp-proxy.service.test <none> 33m
kubernetes ClusterIP XX.XX.XX.XX <none> 443/TCP 5d
sampleapp-proxy ExternalName <none> sampleapp-proxy.service.test <none> 4h
How can I access my sampleapp? Should I expose my application as kube service again?
Earlier, without consul, we used a create a service for the sampleapp and expose the service as ingress. Using the Ingress Loadbalancer, we used to access our application.