Praktikum kubernetes hari ke 2
- Install dan konfigurasi Ingress controller (nginx)
Lakukan deployment ingres controller menggunakan command berikut
root@master:~# kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v1.3.0/deploy/static/provider/cloud/deploy.yaml
namespace/ingress-nginx created
serviceaccount/ingress-nginx created
serviceaccount/ingress-nginx-admission created
role.rbac.authorization.k8s.io/ingress-nginx created
role.rbac.authorization.k8s.io/ingress-nginx-admission created
clusterrole.rbac.authorization.k8s.io/ingress-nginx created
clusterrole.rbac.authorization.k8s.io/ingress-nginx-admission created
rolebinding.rbac.authorization.k8s.io/ingress-nginx created
rolebinding.rbac.authorization.k8s.io/ingress-nginx-admission created
clusterrolebinding.rbac.authorization.k8s.io/ingress-nginx created
clusterrolebinding.rbac.authorization.k8s.io/ingress-nginx-admission created
configmap/ingress-nginx-controller created
service/ingress-nginx-controller created
service/ingress-nginx-controller-admission created
deployment.apps/ingress-nginx-controller created
job.batch/ingress-nginx-admission-create created
job.batch/ingress-nginx-admission-patch created
ingressclass.networking.k8s.io/nginx created
validatingwebhookconfiguration.admissionregistration.k8s.io/ingress-nginx-admission createdCek pods ingress yang sudah dideploy dengan command berikut
root@master:~# kubectl get pods --namespace ingress-nginx
NAME READY STATUS RESTARTS AGE
ingress-nginx-admission-create-7qblj 0/1 Completed 0 2m24s
ingress-nginx-admission-patch-2tvlt 0/1 Completed 0 2m24s
ingress-nginx-controller-fc8d7d749-tdj25 0/1 Running 0 2m24s
root@master:~# kubectl get service ingress-nginx-controller --namespace=ingress-nginx
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
ingress-nginx-controller LoadBalancer 10.101.6.15 <pending> 80:31413/TCP,443:30907/TCP 2m42sLakukan konfigurasi ingress terhadap service yang sudah kita buat sebelumnya
Ujicoba service yang dimasukkan ke loadbalancer
- Install dan konfigure matric server untuk melihat kondisi resource cluster
Lakukan instalasi menggunakan manifest YML berikut
kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yamlCek service apakah sudah running
root@worker2:/home/barkah# kubectl get deployment metrics-server -n kube-system
NAME READY UP-TO-DATE AVAILABLE AGE
metrics-server 0/1 1 0 7h55m
root@worker2:/home/barkah# kubectl get pods -n kube-system
NAME READY STATUS RESTARTS AGE
coredns-5dd5756b68-46vkp 0/1 Running 0 22h
coredns-5dd5756b68-k4cwj 0/1 Running 0 22h
etcd-master 1/1 Running 0 22h
kube-apiserver-master 1/1 Running 0 22h
kube-controller-manager-master 1/1 Running 0 22h
kube-proxy-hhtwq 1/1 Running 0 22h
kube-proxy-tgrwb 1/1 Running 0 22h
kube-proxy-x2lmd 1/1 Running 0 22h
kube-scheduler-master 1/1 Running 1 22h
metrics-server-8857d6b7c-fs6kb 0/1 CrashLoopBackOff 152 (4m56s ago) 7h37m
metrics-server-fbb469ccc-vhz2m 0/1 Running 0 7h51mCek resource nodes menggunakan perintah
# kubectl top nodes
# kubectl top pod
# kubectl top pod -n kube-systemTroubleshoot
- Install dan konfigurasi kubernetes dashboard
Instalasi menggunkan manifest YML
root@master:/home/barkah# kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v2.0.0/aio/deploy/recommended.yaml
namespace/kubernetes-dashboard created
serviceaccount/kubernetes-dashboard created
service/kubernetes-dashboard created
secret/kubernetes-dashboard-certs created
secret/kubernetes-dashboard-csrf created
secret/kubernetes-dashboard-key-holder created
configmap/kubernetes-dashboard-settings created
role.rbac.authorization.k8s.io/kubernetes-dashboard created
clusterrole.rbac.authorization.k8s.io/kubernetes-dashboard created
rolebinding.rbac.authorization.k8s.io/kubernetes-dashboard created
clusterrolebinding.rbac.authorization.k8s.io/kubernetes-dashboard created
deployment.apps/kubernetes-dashboard created
service/dashboard-metrics-scraper created
Warning: spec.template.metadata.annotations[seccomp.security.alpha.kubernetes.io/pod]: non-functional in v1.27+; use the "seccompProfile" field instead
deployment.apps/dashboard-metrics-scraper createdCek kondisi pods
root@master:/home/barkah# kubectl get pods -A
NAMESPACE NAME READY STATUS RESTARTS AGE
calico-system calico-kube-controllers-5c5f98768f-j6xqx 0/1 Running 261 (5m21s ago) 22h
calico-system calico-node-2fkb9 1/1 Running 0 22h
calico-system calico-node-f7rlk 1/1 Running 0 20h
calico-system calico-node-m2n2c 0/1 Running 0 20h
calico-system calico-typha-5fb8b56d64-d2glq 1/1 Running 0 22h
calico-system calico-typha-5fb8b56d64-q8vbv 1/1 Running 0 22h
calico-system csi-node-driver-4f5m8 2/2 Running 0 22h
calico-system csi-node-driver-bns4w 2/2 Running 0 22h
calico-system csi-node-driver-pvc2c 2/2 Running 0 22h
default nginx-7854ff8877-pcqwv 1/1 Running 0 7h23m
kube-system coredns-5dd5756b68-46vkp 0/1 Running 0 22h
kube-system coredns-5dd5756b68-k4cwj 0/1 Running 0 22h
kube-system etcd-master 1/1 Running 0 22h
kube-system kube-apiserver-master 1/1 Running 0 22h
kube-system kube-controller-manager-master 1/1 Running 0 22h
kube-system kube-proxy-hhtwq 1/1 Running 0 22h
kube-system kube-proxy-tgrwb 1/1 Running 0 22h
kube-system kube-proxy-x2lmd 1/1 Running 0 22h
kube-system kube-scheduler-master 1/1 Running 1 22h
kube-system metrics-server-7c94c94795-mcngk 1/1 Running 0 6m38s
kubernetes-dashboard dashboard-metrics-scraper-856cb79ffb-q8cj5 1/1 Running 0 33s
kubernetes-dashboard kubernetes-dashboard-79cf5b89bb-2hhv9 0/1 ContainerCreating 0 33s
tigera-operator tigera-operator-55585899bf-qjn4w 1/1 Running 0 22h
root@master:/home/barkah# kubectl -n kubernetes-dashboard get pods
NAME READY STATUS RESTARTS AGE
dashboard-metrics-scraper-856cb79ffb-q8cj5 1/1 Running 0 3m43s
kubernetes-dashboard-79cf5b89bb-2hhv9 1/1 Running 3 (45s ago) 3m43s
Troubleshoot
Referensi
https://spacelift.io/blog/kubernetes-ingress
https://www.linuxtechi.com/how-to-install-kubernetes-metrics-server/
https://upcloud.com/resources/tutorials/deploy-kubernetes-dashboard