How many Services exist on the system? in the current(default) namespace
k get svc -o wide
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE SELECTOR
kubernetes ClusterIP 10.43.0.1 <none> 443/TCP 3m14s <none>
<aside> 💡 That is a default service created by Kubernetes at launch.
</aside>
What is the type of the default kubernetes service?
k get svc -o wide
NAME **TYPE** CLUSTER-IP EXTERNAL-IP PORT(S) AGE SELECTOR
kubernetes **ClusterIP** 10.43.0.1 <none> 443/TCP 3m14s <none>
What is the targetPort configured on the kubernetes service? 6443
k get svc -o wide
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE SELECTOR
kubernetes ClusterIP 10.43.0.1 <none> 443/TCP 4m45s <none>
k describe svc kubernetes
Name: kubernetes
Namespace: default
Labels: component=apiserver
provider=kubernetes
Type: ClusterIP
IP Family Policy: SingleStack
IP Families: IPv4
IP: 10.43.0.1
IPs: 10.43.0.1
Port: https 443/TCP
**TargetPort: 6443/TCP**
Endpoints: 10.31.128.9:6443
k get svc kubernetes -o yaml
apiVersion: v1
kind: Service
metadata:
labels:
component: apiserver
provider: kubernetes
name: kubernetes
namespace: default
spec:
clusterIP: 10.43.0.1
clusterIPs:
- 10.43.0.1
internalTrafficPolicy: Cluster
ipFamilies:
- IPv4
ipFamilyPolicy: SingleStack
ports:
- name: https
port: 443
protocol: TCP
**targetPort: 6443**
sessionAffinity: None
type: ClusterIP
How many labels are configured on the kubernetes service? 2
k get svc --show-labels
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) LABELS
kubernetes ClusterIP 10.43.0.1 <none> 443/TCP component=apiserver,
provider=kubernetes
How many Endpoints are attached on the kubernetes service? 1
k describe svc kubernetes
Name: kubernetes
Namespace: default
Labels: component=apiserver
provider=kubernetes
Annotations: <none>
Selector: <none>
Type: ClusterIP
IP Family Policy: SingleStack
IP Families: IPv4
IP: 10.43.0.1
IPs: 10.43.0.1
Port: https 443/TCP
TargetPort: 6443/TCP
**Endpoints: 10.31.128.9:6443**
Session Affinity: None
Events: <none>
k get endpoints
NAME ENDPOINTS AGE
kubernetes 10.31.128.9:6443 10m
k describe endpoints kubernetes
Name: kubernetes
Namespace: default
Labels: endpointslice.kubernetes.io/skip-mirror=true
Annotations: <none>
Subsets:
Addresses: 10.31.128.9
NotReadyAddresses: <none>
Ports:
Name Port Protocol
---- ---- --------
https 6443 TCP
How many Deployments exist on the system now? in the current(default) namespace. 1
k get deployments.apps simple-webapp-deployment
NAME READY UP-TO-DATE AVAILABLE AGE
simple-webapp-deployment 4/4 4 4 97s
What is the image used to create the pods in the deployment?
k get deploy -o wide
NAME CONTAINERS **IMAGES**
simple-webapp simple-webapp **kodekloud/simple-webapp:red**
Create a new service to access the web application using the service-definition-1.yaml file
Name: webapp-service
Type: NodePort
targetPort: 8080
port: 8080
nodePort: 30080
selector:
name: simple-webapp
# --tcp=<port>:<targetPort>
k create service nodeport \\
webapp-service \\
--tcp=8080:8080 \\
--node-port=30080 \\
--dry-run=client -o yaml > svc.yaml
apiVersion: v1
kind: Service
metadata:
labels:
app: webapp-service
name: webapp-service
spec:
ports:
- name: 8080-8080
nodePort: 30080
port: 8080
protocol: TCP
targetPort: 8080
**selector:
app: webapp-service**
type: NodePort
Ajustar o selctor para
**selector:
name: simple-webapp**
k get svc webapp-service -o yaml
apiVersion: v1
kind: Service
metadata:
labels:
app: webapp-service
name: webapp-service
namespace: default
spec:
clusterIP: 10.43.34.107
clusterIPs:
- 10.43.34.107
externalTrafficPolicy: Cluster
internalTrafficPolicy: Cluster
ipFamilies:
- IPv4
ipFamilyPolicy: SingleStack
ports:
- name: 8080-8080
nodePort: 30080
port: 8080
protocol: TCP
targetPort: 8080
selector:
name: simple-webapp
sessionAffinity: None
type: NodePort