Kubernetes : नियंत्रण विमान नोड कॉन्फ़िगर करें2024/11/06

मल्टी नोड्स Kubernetes क्लस्टर को कॉन्फ़िगर करने के लिए Kubeadm स्थापित करें।

यह उदाहरण निम्न प्रकार से पर्यावरण पर आधारित है।

-----------+---------------------------+--------------------------+------------
           |                           |                          |
       eth0|10.0.0.30              eth0|10.0.0.51             eth0|10.0.0.52
+----------+-----------+   +-----------+----------+   +-----------+----------+
|   [ dlp.srv.world ]  |   | [ node01.srv.world ] |   | [ node02.srv.world ] |
|     Control Plane    |   |      Worker Node     |   |      Worker Node     |
+----------------------+   +----------------------+   +----------------------+

[1]

सभी नोड्स पर पूर्व-आवश्यकताओं को कॉन्फ़िगर करें, यहां देखें।

[2]

कंट्रोल प्लेन नोड पर प्रारंभिक सेटअप कॉन्फ़िगर करें।

[control-plane-endpoint] के लिए, होस्टनाम या IP पता निर्दिष्ट करें जिस पर Etcd और Kubernetes API सर्वर चलाए जाते हैं।

[--pod-network-cidr] विकल्प के लिए, वह नेटवर्क निर्दिष्ट करें जिसका उपयोग Pod नेटवर्क करता है।
पॉड नेटवर्क के लिए कुछ प्लगइन्स हैं। (नीचे विवरण देखें)

⇒ https://kubernetes.io/docs/concepts/cluster-administration/networking/

इस उदाहरण पर, यह Calico का चयन करता है।

[root@dlp ~]#

kubeadm init --control-plane-endpoint=10.0.0.30 --pod-network-cidr=192.168.0.0/16 --cri-socket=unix:///var/run/crio/crio.sock

[init] Using Kubernetes version: v1.29.10
[preflight] Running pre-flight checks
[preflight] Pulling images required for setting up a Kubernetes cluster
[preflight] This might take a minute or two, depending on the speed of your internet connection
[preflight] You can also perform this action in beforehand using 'kubeadm config images pull'
[certs] Using certificateDir folder "/etc/kubernetes/pki"
[certs] Generating "ca" certificate and key
[certs] Generating "apiserver" certificate and key
[certs] apiserver serving cert is signed for DNS names [dlp.srv.world kubernetes kubernetes.default kubernetes.default.svc kubernetes.default.svc.cluster.local] and IPs [10.96.0.1 10.0.0.30]

.....
.....

Your Kubernetes control-plane has initialized successfully!

To start using your cluster, you need to run the following as a regular user:

  mkdir -p $HOME/.kube
  sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
  sudo chown $(id -u):$(id -g) $HOME/.kube/config

Alternatively, if you are the root user, you can run:

  export KUBECONFIG=/etc/kubernetes/admin.conf

You should now deploy a pod network to the cluster.
Run "kubectl apply -f [podnetwork].yaml" with one of the options listed at:
  https://kubernetes.io/docs/concepts/cluster-administration/addons/

You can now join any number of control-plane nodes by copying certificate authorities
and service account keys on each node and then running the following as root:

  kubeadm join 10.0.0.30:6443 --token gvllup.00w3n7chdes7wwze \
        --discovery-token-ca-cert-hash sha256:e1de67c31493734b93020f67eb817947caaa2bfb3d0e4bc62993c2b8e774d399 \
        --control-plane

Then you can join any number of worker nodes by running the following on each as root:

kubeadm join 10.0.0.30:6443 --token gvllup.00w3n7chdes7wwze \
        --discovery-token-ca-cert-hash sha256:e1de67c31493734b93020f67eb817947caaa2bfb3d0e4bc62993c2b8e774d399

# क्लस्टर व्यवस्थापक उपयोगकर्ता सेट करें
# यदि आप सामान्य उपयोगकर्ता को क्लस्टर व्यवस्थापक के रूप में सेट करते हैं, तो इसके साथ लॉगिन करें और [sudo cp/chown ***] चलाएँ

[root@dlp ~]#

mkdir -p $HOME/.kube

[root@dlp ~]#

cp -i /etc/kubernetes/admin.conf $HOME/.kube/config

[root@dlp ~]#

chown $(id -u):$(id -g) $HOME/.kube/config

[3]	Calico के साथ पॉड नेटवर्क कॉन्फ़िगर करें।

[root@dlp ~]#

wget https://raw.githubusercontent.com/projectcalico/calico/master/manifests/calico.yaml

[root@dlp ~]#

kubectl apply -f calico.yaml

poddisruptionbudget.policy/calico-kube-controllers created
serviceaccount/calico-kube-controllers created
serviceaccount/calico-node created
serviceaccount/calico-cni-plugin created
configmap/calico-config created
customresourcedefinition.apiextensions.k8s.io/bgpconfigurations.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/bgpfilters.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/bgppeers.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/blockaffinities.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/caliconodestatuses.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/clusterinformations.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/felixconfigurations.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/globalnetworkpolicies.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/globalnetworksets.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/hostendpoints.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/ipamblocks.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/ipamconfigs.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/ipamhandles.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/ippools.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/ipreservations.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/kubecontrollersconfigurations.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/networkpolicies.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/networksets.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/tiers.crd.projectcalico.org created
customresourcedefinition.apiextensions.k8s.io/adminnetworkpolicies.policy.networking.k8s.io created
clusterrole.rbac.authorization.k8s.io/calico-kube-controllers created
clusterrole.rbac.authorization.k8s.io/calico-node created
clusterrole.rbac.authorization.k8s.io/calico-cni-plugin created
clusterrolebinding.rbac.authorization.k8s.io/calico-kube-controllers created
clusterrolebinding.rbac.authorization.k8s.io/calico-node created
clusterrolebinding.rbac.authorization.k8s.io/calico-cni-plugin created
daemonset.apps/calico-node created
deployment.apps/calico-kube-controllers created

# स्थिति दिखाओ : ठीक है अगर STATUS = Ready

[root@dlp ~]#

kubectl get nodes

NAME            STATUS   ROLES           AGE    VERSION
dlp.srv.world   Ready    control-plane   3m6s   v1.29.9

# स्थिति दिखाएँ : ठीक है यदि सभी चल रहे हैं

[root@dlp ~]#

kubectl get pods -A

NAMESPACE     NAME                                       READY   STATUS    RESTARTS   AGE
kube-system   calico-kube-controllers-5f9c988956-572fg   1/1     Running   0          53s
kube-system   calico-node-mwdjl                          1/1     Running   0          53s
kube-system   coredns-76f75df574-6kxxl                   1/1     Running   0          3m3s
kube-system   coredns-76f75df574-mrsw7                   1/1     Running   0          3m3s
kube-system   etcd-dlp.srv.world                         1/1     Running   0          3m13s
kube-system   kube-apiserver-dlp.srv.world               1/1     Running   0          3m18s
kube-system   kube-controller-manager-dlp.srv.world      1/1     Running   0          3m13s
kube-system   kube-proxy-448wq                           1/1     Running   0          3m4s
kube-system   kube-scheduler-dlp.srv.world               1/1     Running   0          3m20s

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