쿠버네티스 서비스 실습 3티어 추가실습

#응용문제

서버 설정파일이 파드가 실행될때 넘어올수 있게 하라.

##### WAS 쪽 도커파일######
FROM tomcat:9.0
RUN rm -rf /usr/local/tomcat/conf/server.xml
ADD ./server.xml /usr/local/tomcat/conf/server.xml
ADD ./connent.sh /usr/local/tomcat/connent.sh
ADD ./mysql-connector-java-8.0.19.jar /usr/local/tomcat/lib/mysql-connector-java-8.0.19.jar
EXPOSE 8080
EXPOSE 8009
ENV TYPE=0.0.0.0
CMD /usr/local/tomcat/connent.sh $TYPE && catalina.sh run

connent.sh

#!/bin/bash
if [ $1 != "" ]
then
  sed -i "s/address=\"0.0.0.0\"/address=\"$1\"/g" /usr/local/tomcat/conf/server.xml
fi

 

yml 파일

---
apiVersion: v1
kind: ConfigMap
metadata:
  name: cm-tomcat-dev
data:
  TYPE: '0.0.0.0'

---
#파드
apiVersion: v1
kind: Pod
metadata:
  name: was-server
  labels:
     app: pod-was
spec:
  nodeSelecter:
    kubernetes.io/hostname: node1
  containers:
  - name: was
    image: yoskr/tomcat:1.1
    envFrom:
    - configMapRef:
        name: cm-tomcat-dev  #cm-dev 설정파일을 불러오자
    ports:
    - containerPort: 8009
    volumeMounts:
    - mountPath: /usr/local/tomcat/webapps
      name: was-pvc-pv
  volumes:
  - name : was-pvc-pv
    persistentVolumeClaim:
      claimName: pvc-was

######WEB쪽 도커파일

FROM httpd:2.4
RUN apt update
RUN apt install -y libapache2-mod-jk
RUN cp /usr/lib/apache2/modules/mod_jk.so /usr/local/apache2/modules/mod_jk.so
RUN sed -i 's/localhost/tomcat-svc/g' /etc/libapache2-mod-jk/workers.properties
ADD ./connent.sh /usr/local/apache2/connent.sh
RUN rm -rf /usr/local/apache2/conf/httpd.conf
ADD ./httpd.conf /usr/local/apache2/conf/httpd.conf
EXPOSE 80
ENV TYPE=tomcat-svc
CMD /usr/local/apache2/connent.sh $TYPE && httpd-foreground

connent.sh 파일생성

#!/bin/bash
if [ $1 != "" ]
then
  sed -i "s/tomcat-svc/$1/g" /etc/libapache2-mod-jk/workers.properties
fi

 

yml 파일

apiVersion: v1
kind: ConfigMap
metadata:
  name: cm-httpd-dev
data:
  TYPE: 'svc-was'

---


apiVersion: v1
kind: Pod
metadata:
  name: web-server
  labels:
     app: pod-web
spec:
  nodeSelecter:
    kubernetes.io/hostname: node1
  containers:
  - name: web
    image: yoskr/httpd:0.4
    envFrom:
    - configMapRef:
        name: cm-httpd-dev  #cm-httpd 설정파일을 불러오자
    ports:
    - containerPort: 80
    volumeMounts:
    - mountPath: /usr/local/apache2/htdocs
      name: web-pvc-pv
  volumes:
  - name : web-pvc-pv
    persistentVolumeClaim:
      claimName: pvc-web

 

 

강사님 풀이..

 

WAS서버부분 도커 파일 수정

 

#CMD부분에 아래와 같이 설정파일을 받아오게한다.
CMD wget http://100.100.100.100:8888/test.jsp -O /usr/local/tomcat/webapps/sjb/test.jsp && wget http://100.100.100.100:8888/server.xml -O /usr/local/tomcat/conf/server.xml && catalina.sh run