docker镜像制作-真实生产环境

1. jdk1.8- alpine

准备的文件：

• jdk-1.8.tar.gz
• glibc-2.30-r0.apk

[admin@ansible-001 ~]$vim  Dockerfile 
FROM alpine:3.10

ADD jdk-1.8.tar.gz /usr/local/
COPY glibc-2.30-r0.apk /tmp/glibc-2.30-r0.apk
RUN cd /tmp/ && \
    apk add glibc-2.30-r0.apk  --allow-untrusted && \
    rm -rf *.apk && \
    rm -rf /var/cache/apk/* 

ENV JAVA_HOME=/usr/local/jdk-1.8
ENV CLASSPATH=$JAVA_HOME/bin
ENV PATH=.:$JAVA_HOME/bin:$PATH
CMD ["java","-version"]

[admin@ansible-001 ~]$sudo docker build -t harbor.xx.com/library/jdk:1.8-alpine
[admin@ansible-001 ~]$sudo docker push harbor.xx.com/library/jdk:1.8-alpine

2. tomcat:8-jdk8

准备的文件：

• tomcat.tar.gz

[admin@ansible-001 ~]$vim  Dockerfile 
FROM harbor.xx.com/library/jdk:1.8-alpine

ENV CATALINA_HOME /usr/local/tomcat
ENV PATH $CATALINA_HOME/bin:$PATH
RUN mkdir -p "$CATALINA_HOME"
WORKDIR $CATALINA_HOME
ADD tomcat.tar.gz .
RUN rm bin/*.bat

EXPOSE 8080
CMD ["catalina.sh", "run"]

[admin@ansible-001 ~]$sudo docker build -t harbor.xx.com/library/tomcat:8-jdk8
[admin@ansible-001 ~]$sudo docker push harbor.xx.com/library/tomcat:8-jdk8

测试：

[admin@ansible-001 ~]$vim  test.yaml
apiVersion: v1
kind: Pod
metadata:
  name: test-pod
spec:
  imagePullSecrets:
  - name: harbor-admin
  containers:
  - name: test
    image: harbor.xx.com/library/tomcat:8-jdk8
    ports:
    - containerPort: 8080
    env:
    - name: JAVA_OPTS
      value: -server -Xms${JVM_XMS:-256m} -Xmx${JVM_XMX:-256m} -XX:+UseConcMarkSweepGC
    - name: JVM_XMS
      valueFrom:
        resourceFieldRef:
          resource: requests.memory
    - name: JVM_XMX
      valueFrom:
        resourceFieldRef:
          resource: limits.memory
    resources:
      requests: 
        memory: 1024Mi
      limits: 
        memory: 1024Mi

[admin@ansible-001 ~]$kubecetl apply -f test.yaml
[admin@ansible-001 ~]$kubectl exec -it test-pod -- jinfo 1