Kubernetes

쿠버네티스 (POD 삭제 / 컨테이너 이름을 지정해서 pod로그 가져오기)

law and security 2024. 9. 27. 10:50

 

 

 

< pod 정보 확인 >

 

-> 현재 pod는 3개 있다. 

 

[root@k8smaster ~]# kubectl get pods
NAME                         READY   STATUS    RESTARTS   AGE
guestbook-7b5df6f8cd-85kxm   1/1     Running   0          20h
guestbook-7b5df6f8cd-gbgr8   1/1     Running   0          20h
guestbook-7b5df6f8cd-nrk74   1/1     Running   0          20h

[root@k8smaster ~]# cd ~/lab/03

[root@k8smaster 03]# ls
custom-namespace.yaml                        guestbook-liveness-probe.yaml           guestbook-manual.yaml
guestbook-gpu.yaml                           guestbook-manual-custom-namespace.yaml
guestbook-liveness-probe-initial-delay.yaml  guestbook-manual-with-labels.yaml

 

 

 

 

 

 

<pod 삭제 >

 

    

[root@k8smaster 03]# kubectl create -f guestbook-manual.yaml
pod/guestbook-manual created

[root@k8smaster 03]# kubectl get pods
NAME                         READY   STATUS    RESTARTS   AGE
guestbook-7b5df6f8cd-85kxm   1/1     Running   0          20h
guestbook-7b5df6f8cd-gbgr8   1/1     Running   0          20h
guestbook-7b5df6f8cd-nrk74   1/1     Running   0          20h
guestbook-manual             1/1     Running   0          13s

[root@k8smaster 03]# kubectl get replicaset
NAME                   DESIRED   CURRENT   READY   AGE
guestbook-7b5df6f8cd   3         3         3       45h

[root@k8smaster 03]# kubectl delete pods guestbook-7b5df6f8cd-gbgr8
pod "guestbook-7b5df6f8cd-gbgr8" deleted

[root@k8smaster 03]# kubectl get rs
NAME                   DESIRED   CURRENT   READY   AGE
guestbook-7b5df6f8cd   3         3         3       45h

[root@k8smaster 03]# kubectl delete rs  guestbook-7b5df6f8cd
replicaset.apps "guestbook-7b5df6f8cd" deleted

 

 

 

 

< ReplicaSet 안에 있는 POD 삭제 >

 

 

 

[root@k8smaster 03]# cd ..

[root@k8smaster lab]# ls
쿠버네티스_설치  02  03  04  05  06  07  08  09  10  11  12  13  14  whatap-demo

[root@k8smaster lab]# cd 02

[root@k8smaster 02]# ls
dashboard  metrics-server

[root@k8smaster 02]# kubectl get deployment
NAME        READY   UP-TO-DATE   AVAILABLE   AGE
guestbook   3/3     3            3           45h

[root@k8smaster 02]# kubectl delete deployment guestbook
deployment.apps "guestbook" deleted

[root@k8smaster 02]# kubectl get pods
NAME               READY   STATUS    RESTARTS   AGE
guestbook-manual   1/1     Running   0          12m

[root@k8smaster 02]#

 

 

* deployment를 지워야 ReplicaSet안에 있는 POD들이 삭제된다.  ( deployment에 의해 replicaset를 만들었기 때문) 

 

* ReplicaSet 객체로 만들면 replicaset를 삭제하면 pod들도 삭제된다. 

 

[root@k8smaster 02]# kubectl get rs
No resources found in default namespace.

[root@k8smaster 02]# kubectl get pods
NAME               READY   STATUS    RESTARTS   AGE
guestbook-manual   1/1     Running   0          19m

[root@k8smaster 02]#

 

* 수동으로 pod를 만들면 ReplicaSet자체가 없다. 

 

[root@k8smaster 02]# kubectl logs guestbook-manual

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.1.6.RELEASE)

2024-09-27 01:56:45.822  INFO 1 --- [           main] c.j.guestbook.GuestbookApplication       : Starting GuestbookApplication v0.0.1-SNAPSHOT on guestbook-manual with PID 1 (/app/guestbook.jar started by root in /app)
2024-09-27 01:56:45.825  INFO 1 --- [           main] c.j.guestbook.GuestbookApplication       : No active profile set, falling back to default profiles: default
2024-09-27 01:56:47.269  INFO 1 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2024-09-27 01:56:47.324  INFO 1 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2024-09-27 01:56:47.325  INFO 1 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.21]
2024-09-27 01:56:47.433  INFO 1 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2024-09-27 01:56:47.434  INFO 1 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 1556 ms
2024-09-27 01:56:47.578  INFO 1 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Starting...
2024-09-27 01:56:47.855  INFO 1 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Start completed.
2024-09-27 01:56:48.248  INFO 1 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
2024-09-27 01:56:48.400  INFO 1 --- [           main] o.s.b.a.w.s.WelcomePageHandlerMapping    : Adding welcome page template: index
2024-09-27 01:56:48.542  INFO 1 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
2024-09-27 01:56:48.544  INFO 1 --- [           main] c.j.gu

 

* kubectl log로 POD의 로그 출력

 

 

[root@k8smaster 02]# kubectl logs guestbook-manual -c guestbook

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.1.6.RELEASE)

2024-09-27 01:56:45.822  INFO 1 --- [           main] c.j.guestbook.GuestbookApplication       : Starting GuestbookApplication v0.0.1-SNAPSHOT on guestbook-manual with PID 1 (/app/guestbook.jar started by root in /app)
2024-09-27 01:56:45.825  INFO 1 --- [           main] c.j.guestbook.GuestbookApplication       : No active profile set, falling back to default profiles: default
2024-09-27 01:56:47.269  INFO 1 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2024-09-27 01:56:47.324  INFO 1 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2024-09-27 01:56:47.325  INFO 1 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.21]
2024-09-27 01:56:47.433  INFO 1 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2024-09-27 01:56:47.434  INFO 1 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 1556 ms
2024-09-27 01:56:47.578  INFO 1 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Starting...
2024-09-27 01:56:47.855  INFO 1 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Start completed.
2024-09-27 01:56:48.248  INFO 1 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
2024-09-27 01:56:48.400  INFO 1 --- [           main] o.s.b.a.w.s.WelcomePageHandlerMapping    : Adding welcome page template: index
2024-09-27 01:56:48.542  INFO 1 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
2024-09-27 01:56:48.544  INFO 1 --- [           main] c.j.guestbook.GuestbookApplication       : Started GuestbookApplication in 3.256 seconds (JVM running for 4.061)

 

* 컨테이너 이름을 지정해서 다중컨테이너 POD의 로그 가져오기

 

[root@k8smaster 02]# kubectl describe pods guestbook-manual
Name:             guestbook-manual
Namespace:        default
Priority:         0
Service Account:  default
Node:             k8snode1/192.168.56.101
Start Time:       Fri, 27 Sep 2024 10:56:43 +0900
Labels:           <none>
Annotations:      cni.projectcalico.org/containerID: 4087d522887f0f959b49904aeb1d760921f085cddede8c8afd78fb6b11be9e05
                  cni.projectcalico.org/podIP: 10.102.249.18/32
                  cni.projectcalico.org/podIPs: 10.102.249.18/32
Status:           Running
IP:               10.102.249.18
IPs:
  IP:  10.102.249.18
Containers:
  guestbook:
    Container ID:   containerd://582a9589711c63f4fa08b70a553ac290e5c427155407473d655f8ff04f324196
    Image:          yu3papa/k8s_guestbook:1.0
    Image ID:       docker.io/yu3papa/k8s_guestbook@sha256:e8ae04e606f959ca5f1008e6959d1f3430e3f2ced4cd6688c33efe1a2af4daac
    Port:           8080/TCP
    Host Port:      0/TCP
    State:          Running
      Started:      Fri, 27 Sep 2024 10:56:44 +0900
    Ready:          True
    Restart Count:  0
    Environment:    <none>
    Mounts:
      /var/run/secrets/kubernetes.io/serviceaccount from kube-api-access-6lkkp (ro)
Conditions:
  Type              Status
  Initialized       True
  Ready             True
  ContainersReady   True
  PodScheduled      True
Volumes:
  kube-api-access-6lkkp:
    Type:                    Projected (a volume that contains injected data from multiple sources)
    TokenExpirationSeconds:  3607
    ConfigMapName:           kube-root-ca.crt
    ConfigMapOptional:       <nil>
    DownwardAPI:             true
QoS Class:                   BestEffort
Node-Selectors:              <none>
Tolerations:                 node.kubernetes.io/not-ready:NoExecute op=Exists for 300s
                             node.kubernetes.io/unreachable:NoExecute op=Exists for 300s
Events:
  Type    Reason     Age   From               Message
  ----    ------     ----  ----               -------
  Normal  Scheduled  24m   default-scheduler  Successfully assigned default/guestbook-manual to k8snode1
  Normal  Pulled     24m   kubelet            Container image "yu3papa/k8s_guestbook:1.0" already present on machine
  Normal  Created    24m   kubelet            Created container guestbook
  Normal  Started    24m   kubelet            Started container guestbook

 

 

* Kubernetes 클러스터에서 guestbook-manual이라는 이름을 가진 파드의 상세 정보를 출력

 

[root@k8smaster 02]# kubectl get pods guestbook-manual -o wide
NAME               READY   STATUS    RESTARTS   AGE   IP              NODE       NOMINATED NODE   READINESS GATES
guestbook-manual   1/1     Running   0          40m   10.102.249.18   k8snode1   <none>   
<none>
[root@k8smaster 02]# curl 10.102.249.18:8080
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<link href="/common.css" rel="stylesheet">
<link href="/guestbook.css" rel="stylesheet">

<title>방명록 (K8S)</title>
</head>
<body>
        <div class="guestbook list displaynone" style="display: block;">
                <ul class="cont">
                        <li>
                                <p class="memo">
HealthCheck : This is v1 running in pod guestbook-manual (10.102.249.18)
                                </p>
                        </li>
                </ul>
        </div>

        <h4 class="g-top">방명록 v1(정환열)</h4>
        <div class="top-img">
                <img src="/bg-guestbook.jpg">
        </div>
        <form action="/" method="post" id="frm" enctype="multipart/form-data">
                <div class="g-cont">
                        <ul>
                                <li class="name"><input name="name" type="text" maxlength="20" placeholder="이름" class="form-control"></li>
                                <li class="msg"><textarea name="content" maxlength="200" placeholder="내용을 입력해주세요" class="form-control" rows="3"></textarea></li>
                                <li>파일첨부<input type="file" name="uploadingFile"></li>
                        </ul>
                        <p class="btn btn-lg" onclick="document.getElementById('frm').submit();">방명록 남기기</p>
                </div>
        </form>

        <div class="guestbook list displaynone" style="display: block;">
                <ul class="cont">
                        <li>
                                <p class="name">최유진</p>
                                <p class="date">2024-09-25 03:43:41</p>
                                <p class="memo">방명록</p>
                                첨부파일&nbsp;:&nbsp;<a href="/downloadFile/null"></a>
                        </li>
                </ul>
        </div>
</body>

 

 

* 해당하는 pod를 열어봄 

 

 

 

[root@k8smaster 02]# kubectl port-forward guestbook-manual 8888:8080
Forwarding from 127.0.0.1:8888 -> 8080
Forwarding from [::1]:8888 -> 8080
Handling connection for 8888

 

 

[root@k8smaster ~]# curl localhost:8888
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<link href="/common.css" rel="stylesheet">
<link href="/guestbook.css" rel="stylesheet">

<title>방명록 (K8S)</title>
</head>
<body>
        <div class="guestbook list displaynone" style="display: block;">
                <ul class="cont">
                        <li>
                                <p class="memo">
HealthCheck : This is v1 running in pod guestbook-manual (10.102.249.18)
                                </p>
                        </li>
                </ul>
        </div>

        <h4 class="g-top">방명록 v1(정환열)</h4>
        <div class="top-img">
                <img src="/bg-guestbook.jpg">
        </div>
        <form action="/" method="post" id="frm" enctype="multipart/form-data">
                <div class="g-cont">
                        <ul>
                                <li class="name"><input name="name" type="text" maxlength="20" placeholder="이름" class="form-control"></li>
                                <li class="msg"><textarea name="content" maxlength="200" placeholder="내용을 입력해주세요" class="form-control" rows="3"></textarea></li>
                                <li>파일첨부<input type="file" name="uploadingFile"></li>
                        </ul>
                        <p class="btn btn-lg" onclick="document.getElementById('frm').submit();">방명록 남기기</p>
                </div>
        </form>

        <div class="guestbook list displaynone" style="display: block;">
                <ul class="cont">
                        <li>
                                <p class="name">최유진</p>
                                <p class="date">2024-09-25 03:43:41</p>
                                <p class="memo">방명록</p>
                                첨부파일&nbsp;:&nbsp;<a href="/downloadFile/null"></a>
                        </li>
                </ul>
        </div>
</body>
[root@k8smaster ~]#

 

 

[root@k8smaster ~]# kubectl delete service guestbook-http
service "guestbook-http" deleted

[root@k8smaster ~]# kubectl get services
NAME         TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)   AGE
kubernetes   ClusterIP   10.96.0.1    <none>        443/TCP   276d
[root@k8smaster ~]#

 

* 해당 서비스 삭제 

미션 1  p.32의 deployment를 통한 배포 -> 파드들의 정보확인 -> rs정보 확인 -> deployment 상세정보 확인

delete: (세션창 추가) watch .... 파드 감시
      1) 파드삭제 시도 --> 세션창 정보 확인
      2)  rs삭제 시도  --> 세션창 정보 확인 
      3) deployment 삭제 시도 --> 세션창에서 정보 확인 

미션 2 : 수동으로 파드 생성 --> localhost포트 포워딩 설정  -->  (세션창)  localhost:8888 --> 수동파드로 포어딩되었나 확인

미션 3. 추가로 deployment한 pod에 서비스 생성(gestbook-http2)- LoadBalncer타입
 --> 서비스 목록 확인
--> 방금 생성된 서비스의 상세정보를 확인  

 

미션 1

[root@k8smaster ~]# kubectl delete service guestbook-http
service "guestbook-http" deleted

[root@k8smaster ~]# kubectl get services
NAME         TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)   AGE
kubernetes   ClusterIP   10.96.0.1    <none>        443/TCP   276d

[root@k8smaster ~]# docker images
REPOSITORY                     TAG      IMAGE ID        CREATED         PLATFORM       SIZE         BLOB SIZE
choichoiyj/k8s_guestbook       1.0      90a2e1344a47    2 days ago      linux/amd64    554.4 MiB    246.5 MiB
choichoiyujin/k8s_guestbook    1.0      90a2e1344a47    2 days ago      linux/amd64    554.4 MiB    246.5 MiB
ubuntu                         24.04    dfc10878be8d    2 days ago      linux/amd64    81.0 MiB     28.4 MiB
yu3papa/mysql_hangul           2.0      887eb3c63fd4    9 months ago    linux/amd64    359.1 MiB    116.9 MiB

[root@k8smaster ~]# kubectl get pods
NAME                         READY   STATUS    RESTARTS   AGE
guestbook-789b4b9748-vmh9m   1/1     Running   0          19m
guestbook-manual             1/1     Running   0          73m

[root@k8smaster ~]# kubectl get services
NAME         TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)   AGE
kubernetes   ClusterIP   10.96.0.1    <none>        443/TCP   276d

[root@k8smaster ~]# kubectl expose deployment guestbook --type=LoadBalancer --name guestbook-http
service/guestbook-http exposed

[root@k8smaster ~]# kubectl get services
NAME             TYPE           CLUSTER-IP      EXTERNAL-IP   PORT(S)          AGE
guestbook-http   LoadBalancer   10.104.98.114   <pending>     8080:31977/TCP   32s
kubernetes       ClusterIP      10.96.0.1       <none>        443/TCP          276d

[root@k8smaster ~]# kubectl get replicasets
NAME                   DESIRED   CURRENT   READY   AGE
guestbook-789b4b9748   1         1         1       23m

[root@k8smaster ~]# kubectl scale deployment guestbook --replicas=3
deployment.apps/guestbook scaled
[root@k8smaster ~]# kubectl get pods
NAME                         READY   STATUS    RESTARTS   AGE
guestbook-789b4b9748-bfl4v   1/1     Running   0          13s
guestbook-789b4b9748-jnzms   1/1     Running   0          13s
guestbook-789b4b9748-vmh9m   1/1     Running   0          25m
guestbook-manual             1/1     Running   0          79m

[root@k8smaster ~]# kubectl get po -o wide
NAME                         READY   STATUS    RESTARTS   AGE     IP              NODE       NOMINATED NODE   READINESS GATES
guestbook-789b4b9748-bfl4v   1/1     Running   0          3m41s   10.102.249.25   k8snode1   <none>           <none>
guestbook-789b4b9748-jnzms   1/1     Running   0          3m41s   10.102.249.24   k8snode1   <none>           <none>
guestbook-789b4b9748-vmh9m   1/1     Running   0          29m     10.102.249.23   k8snode1   <none>           <none>
guestbook-manual             1/1     Running   0          83m     10.102.249.18   k8snode1   <none>           <none>

 

1. 

[root@k8smaster 03]# kubectl create -f guestbook-manual.yaml
pod/guestbook-manual created
[root@k8smaster templates]# kubectl get pods
NAME                         READY   STATUS    RESTARTS   AGE
guestbook-789b4b9748-bfl4v   1/1     Running   0          21m
guestbook-789b4b9748-jnzms   1/1     Running   0          21m
guestbook-789b4b9748-vmh9m   1/1     Running   0          47m
guestbook-manual             1/1     Running   0          101m
[root@k8smaster templates]# kubectl get replicaset
NAME                   DESIRED   CURRENT   READY   AGE
guestbook-789b4b9748   3         3         3       47m
[root@k8smaster templates]# kubectl delete pods guestbook-789b4b9748-bfl4v
pod "guestbook-789b4b9748-bfl4v" deleted
[root@k8smaster templates]# kubectl get rs
NAME                   DESIRED   CURRENT   READY   AGE
guestbook-789b4b9748   3         3         3       51m
[root@k8smaster templates]# kubectl delete rs guestbook-789b4b9748
replicaset.apps "guestbook-789b4b9748" deleted

 

2. 

 

[root@k8smaster resources]# kubectl get services
NAME             TYPE           CLUSTER-IP      EXTERNAL-IP   PORT(S)          AGE
guestbook-http   LoadBalancer   10.104.98.114   <pending>     8080:31977/TCP   35m
kubernetes       ClusterIP      10.96.0.1       <none>        443/TCP          276d
[root@k8smaster resources]# kubectl delete service guestbook-http
service "guestbook-http" deleted
[root@k8smaster resources]# kubectl get services
NAME         TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)   AGE
kubernetes   ClusterIP   10.96.0.1    <none>        443/TCP   276d
[root@k8smaster resources]#

 

3. 

 

[root@k8smaster guestbook]# cd ~
[root@k8smaster ~]# cd lab
[root@k8smaster lab]# cd 02
[root@k8smaster 02]# ls
dashboard  metrics-server
[root@k8smaster 02]# kubectl get deployment
NAME        READY   UP-TO-DATE   AVAILABLE   AGE
guestbook   3/3     3            3           60m
[root@k8smaster 02]# kubectl delete deployment guestbook
deployment.apps "guestbook" deleted
[root@k8smaster 02]# kubectl get pods
NAME               READY   STATUS    RESTARTS   AGE
guestbook-manual   1/1     Running   0          115m

[root@k8smaster 02]# kubectl get deployment
No resources found in default namespace.

[root@k8smaster 02]# kubectl get replicaset
No resources found in default namespace.

 

 

 

 

 

미션 2.  : 수동으로 파드 생성 --> localhost포트 포워딩 설정  -->  (세션창)  localhost:8888 --> 수동파드로 포어딩되었나 확인

 

[root@k8smaster 03]# kubectl get pods
No resources found in default namespace.
[root@k8smaster 03]# ls
custom-namespace.yaml                        guestbook-manual-custom-namespace.yaml
guestbook-gpu.yaml                           guestbook-manual-with-labels.yaml
guestbook-liveness-probe-initial-delay.yaml  guestbook-manual.yaml
guestbook-liveness-probe.yaml
[root@k8smaster 03]# kubectl create -f guestbook-manual.yaml
pod/guestbook-manual created
[root@k8smaster 03]# kubectl get pods
NAME               READY   STATUS    RESTARTS   AGE
guestbook-manual   1/1     Running   0          17s

[root@k8smaster 03]# kubectl port-forward guestbook-manual 8888:8080
Forwarding from 127.0.0.1:8888 -> 8080
Forwarding from [::1]:8888 -> 8080
Handling connection for 8888


#다른 세션 창에서 
[root@k8smaster ~]#crul localhost:8888
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<link href="/common.css" rel="stylesheet">
<link href="/guestbook.css" rel="stylesheet">

<title>방명록 (K8S)</title>
</head>
<body>
        <div class="guestbook list displaynone" style="display: block;">
                <ul class="cont">
                        <li>
                                <p class="memo">
HealthCheck : This is v1 running in pod guestbook-manual (10.102.249.30)
                                </p>
                        </li>
                </ul>
        </div>

        <h4 class="g-top">방명록 v1(정환열)</h4>
        <div class="top-img">
                <img src="/bg-guestbook.jpg">
        </div>
        <form action="/" method="post" id="frm" enctype="multipart/form-data">
                <div class="g-cont">
                        <ul>
                                <li class="name"><input name="name" type="text" maxlength="20" placeholder="이름" class="form-control"></li>
                                <li class="msg"><textarea name="content" maxlength="200" placeholder="내용을 입력해주세요" class="form-control" rows="3"></textarea></li>
                                <li>파일첨부<input type="file" name="uploadingFile"></li>
                        </ul>
                        <p class="btn btn-lg" onclick="document.getElementById('frm').submit();">방명록 남기기</p>
                </div>
        </form>

        <div class="guestbook list displaynone" style="display: block;">
                <ul class="cont">
                        <li>
                                <p class="name">최유진</p>
                                <p class="date">2024-09-25 03:43:41</p>
                                <p class="memo">방명록</p>
                                첨부파일&nbsp;:&nbsp;<a href="/downloadFile/null"></a>
                        </li>
                </ul>
        </div>
</body>
</html>[root@k8smaster ~]#

 

미션 3. 추가로 deployment한 pod에 서비스 생성(gestbook-http2)- LoadBalncer타입
 --> 서비스 목록 확인
--> 방금 생성된 서비스의 상세정보를 확인  

[root@k8smaster 03]# docker images
REPOSITORY                     TAG      IMAGE ID        CREATED         PLATFORM       SIZE         BLOB SIZE
choichoiyj/k8s_guestbook       1.0      90a2e1344a47    2 days ago      linux/amd64    554.4 MiB    246.5 MiB
choichoiyujin/k8s_guestbook    1.0      90a2e1344a47    2 days ago      linux/amd64    554.4 MiB    246.5 MiB
ubuntu                         24.04    dfc10878be8d    2 days ago      linux/amd64    81.0 MiB     28.4 MiB
yu3papa/mysql_hangul           2.0      887eb3c63fd4    9 months ago    linux/amd64    359.1 MiB    116.9 MiB

[root@k8smaster 03]# kubectl create deployment guestbook --image=choichoiyj/k8s_guestbook:1.0 --port=8080
deployment.apps/guestbook created

[root@k8smaster 03]# kubectl get pods
NAME                         READY   STATUS    RESTARTS   AGE
guestbook-7c797cc9cc-z5grg   1/1     Running   0          22s
guestbook-manual             1/1     Running   0          13m

[root@k8smaster 03]# kubectl get deployment
NAME        READY   UP-TO-DATE   AVAILABLE   AGE
guestbook   1/1     1            1           40s

[root@k8smaster 03]# kubectl expose deployment guestbook --type=LoadBalancer --name guestbook-http2
service/guestbook-http2 exposed

[root@k8smaster 03]# kubectl get services
NAME              TYPE           CLUSTER-IP    EXTERNAL-IP   PORT(S)          AGE
guestbook-http2   LoadBalancer   10.96.73.62   <pending>     8080:30104/TCP   8s
kubernetes        ClusterIP      10.96.0.1     <none>        443/TCP          276d

[root@k8smaster 03]# kubectl describe service guestbook-http2
Name:                     guestbook-http2
Namespace:                default
Labels:                   app=guestbook
Annotations:              <none>
Selector:                 app=guestbook
Type:                     LoadBalancer
IP Family Policy:         SingleStack
IP Families:              IPv4
IP:                       10.96.73.62
IPs:                      10.96.73.62
Port:                     <unset>  8080/TCP
TargetPort:               8080/TCP
NodePort:                 <unset>  30104/TCP
Endpoints:                10.102.249.31:8080
Session Affinity:         None
External Traffic Policy:  Cluster
Events:                   <none>

 

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