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Kubernetes : पॉड्स तैनात करें2023/10/13

 
Kubernetes क्लस्टर पर पॉड्स और अन्य बनाने के लिए यह बुनियादी ऑपरेशन है।
[1] पॉड्स बनाएं या हटाएं।
# [test-nginx] पॉड्स चलाएँ

[root@dlp ~]#
kubectl create deployment test-nginx --image=nginx

deployment.apps/test-nginx created
[root@dlp ~]#
kubectl get pods

NAME                          READY   STATUS    RESTARTS   AGE
test-nginx-6b4d69f6f8-fst72   1/1     Running   0          22s

# [test-nginx] पॉड के लिए पर्यावरण चर दिखाएं

[root@dlp ~]#
kubectl exec test-nginx-6b4d69f6f8-fst72 -- env

PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
TERM=xterm
HOSTNAME=test-nginx-6b4d69f6f8-fst72
KUBERNETES_SERVICE_PORT_HTTPS=443
KUBERNETES_PORT=tcp://10.96.0.1:443
KUBERNETES_PORT_443_TCP=tcp://10.96.0.1:443
KUBERNETES_PORT_443_TCP_PROTO=tcp
KUBERNETES_PORT_443_TCP_PORT=443
KUBERNETES_PORT_443_TCP_ADDR=10.96.0.1
KUBERNETES_SERVICE_HOST=10.96.0.1
KUBERNETES_SERVICE_PORT=443
NGINX_VERSION=1.23.4
NJS_VERSION=0.7.11
PKG_RELEASE=1~bullseye
HOME=/root

# [test-nginx] पॉड तक शेल पहुंच

[root@dlp ~]#
kubectl exec -it test-nginx-6b4d69f6f8-fst72 -- bash
root@test-nginx-6b4d69f6f8-fst72:/#
hostname

test-nginx-6b4d69f6f8-fst72
root@test-nginx-6b4d69f6f8-fst72:/#
exit
# [test-nginx] पॉड के लॉग दिखाएं

[root@dlp ~]#
kubectl logs test-nginx-6b4d69f6f8-fst72

/docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration
/docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/
/docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh
10-listen-on-ipv6-by-default.sh: info: Getting the checksum of /etc/nginx/conf.d/default.conf
10-listen-on-ipv6-by-default.sh: info: Enabled listen on IPv6 in /etc/nginx/conf.d/default.conf
/docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh
/docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh
/docker-entrypoint.sh: Configuration complete; ready for start up
2023/04/26 05:32:13 [notice] 1#1: using the "epoll" event method
2023/04/26 05:32:13 [notice] 1#1: nginx/1.23.4
2023/04/26 05:32:13 [notice] 1#1: built by gcc 10.2.1 20210110 (Debian 10.2.1-6)
2023/04/26 05:32:13 [notice] 1#1: OS: Linux 6.2.12-300.fc38.x86_64
2023/04/26 05:32:13 [notice] 1#1: getrlimit(RLIMIT_NOFILE): 1048576:1048576
.....
.....

# फली को स्केल करें

[root@dlp ~]#
kubectl scale deployment test-nginx --replicas=3

deployment.extensions/test-nginx scaled
[root@dlp ~]#
kubectl get pods -o wide

NAME                          READY   STATUS    RESTARTS   AGE     IP                NODE               NOMINATED NODE   READINESS GATES
test-nginx-6b4d69f6f8-66x9q   1/1     Running   0          44s     192.168.241.130   node02.srv.world   <none>           <none>
test-nginx-6b4d69f6f8-fst72   1/1     Running   0          3m24s   192.168.40.193    node01.srv.world   <none>           <none>
test-nginx-6b4d69f6f8-v4gr7   1/1     Running   0          44s     192.168.241.129   node02.srv.world   <none>           <none>

# सेवा सेट करें

[root@dlp ~]#
kubectl expose deployment test-nginx --type="NodePort" --port 80

service "test-nginx" exposed
[root@dlp ~]#
kubectl get services test-nginx

NAME         TYPE       CLUSTER-IP    EXTERNAL-IP   PORT(S)        AGE
test-nginx   NodePort   10.99.4.205   <none>        80:31442/TCP   5s

# पहुंच सत्यापित करें

[root@dlp ~]#
curl 10.99.4.205

<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
.....
.....
<p><em>Thank you for using nginx.</em></p>
</body>
</html>

# सेवा हटाएँ

[root@dlp ~]#
kubectl delete services test-nginx

service "test-nginx" deleted
# पॉड्स हटाएं

[root@dlp ~]#
kubectl delete deployment test-nginx

deployment.extensions "test-nginx" deleted
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