kubernetes 学习 创建cronjob

POM.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>XXXXXXXXXX</groupId>
    <artifactId>XXXXXXX</artifactId>
    <version>1.0-SNAPSHOT</version>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
            <plugin>
                <artifactId>maven-dependency-plugin</artifactId>
                <executions>
                    <execution>
                        <id>copy</id>
                        <phase>package</phase>
                        <goals>
                            <goal>copy-dependencies</goal>
                        </goals>
                        <configuration>
                            <outputDirectory>${project.build.directory}/lib</outputDirectory>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

    <properties>
        <redis.version>2.9.0</redis.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>redis.clients</groupId>
            <artifactId>jedis</artifactId>
            <version>${redis.version}</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/ch.qos.logback/logback-classic -->
        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-classic</artifactId>
            <version>1.2.3</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-classic</artifactId>
            <version>1.2.3</version>
        </dependency>
    </dependencies>
    <profiles>
        <profile>
            <id>dist</id>
            <build>
                <plugins>
                    <plugin>
                        <artifactId>maven-jar-plugin</artifactId>
                        <configuration>
                            <archive>
                                <manifest>
                                    <mainClass>含有main函数的类的全名</mainClass>
                                    <addClasspath>true</addClasspath>
                                    <classpathPrefix>lib/</classpathPrefix>
                                </manifest>
                                <!-- Add config folder into classpath of MANIFEST -->
                                <manifestEntries>
                                    <Class-Path>src/main/resources</Class-Path>
                                </manifestEntries>
                            </archive>
                            <classesDirectory></classesDirectory>
                            <!--<excludes> <exclude>*.conf</exclude> <exclude>*.xml</exclude>
                                </excludes> -->
                        </configuration>
                    </plugin>
                    <!-- Copy dependency Jars to lib folder -->
                    <plugin>
                        <artifactId>maven-dependency-plugin</artifactId>
                        <executions>
                            <execution>
                                <id>copy</id>
                                <phase>package</phase>
                                <goals>
                                    <goal>copy-dependencies</goal>
                                </goals>
                                <configuration>
                                    <outputDirectory>${project.build.directory}/lib</outputDirectory>
                                </configuration>
                            </execution>
                        </executions>
                    </plugin>
                    <plugin>
                        <artifactId>maven-assembly-plugin</artifactId>
                        <configuration>
                            <descriptors>
                                <descriptor>assembly.xml</descriptor>
                            </descriptors>
                        </configuration>
                        <executions>
                            <execution>
                                <id>make-assembly</id>
                                <phase>package</phase>
                                <goals>
                                    <goal>single</goal>
                                </goals>
                            </execution>
                        </executions>
                    </plugin>
                </plugins>
            </build>
        </profile>
    </profiles>
</project>

assembly.xml

<assembly>
    <id>dist</id>
    <formats>
        <format>zip</format>
    </formats>
    <!-- set to false the archive created will unzip its content to the current directory. -->
    <includeBaseDirectory>false</includeBaseDirectory>
    <fileSets>
        <!-- copy file from target folder -->
        <fileSet>
            <directory>${basedir}/target</directory>
            <includes>
                <include>*.jar</include>
            </includes>
            <outputDirectory></outputDirectory>
        </fileSet>
        <fileSet>
            <directory>${basedir}/target/lib</directory>
            <outputDirectory>lib</outputDirectory>
        </fileSet>
        <!-- copy file from source folder -->
        <fileSet>
            <directory>${basedir}/dist</directory>
            <outputDirectory></outputDirectory>
            <fileMode>744</fileMode>
            <lineEnding>unix</lineEnding>
            <includes>
                <include>start</include>
                <include>stop</include>
            </includes>
        </fileSet>
    </fileSets>
</assembly>

logback.xml

<!-- https://www.playframework.com/documentation/latest/SettingsLogger -->
<configuration>
    <property name="APP_NAME" value="your application name"/>
    <property name="SERVICE_NAME" value="your service name" />
    <appender name="ROLLING" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${LOG_PATH:-/var/log/${APP_NAME}.log}</file>
        <encoder>
            <pattern>[%date{ISO8601}] [${SERVICE_NAME}] [${HOSTNAME}] [%thread] [%-5level] [%logger{36}] :%msg%n
            </pattern>
        </encoder>
        <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
            <fileNamePattern>${LOG_PATH}/${APP_NAME}.%d{yyyy-MM-dd}.%i.log</fileNamePattern>
            <maxFileSize>100MB</maxFileSize>
            <maxHistory>60</maxHistory>
            <totalSizeCap>20GB</totalSizeCap>
        </rollingPolicy>
    </appender>
    <appender name="ASYNC" class="ch.qos.logback.classic.AsyncAppender">
        <discardingThreshold>0</discardingThreshold>
        <queueSize>512</queueSize>
        <appender-ref ref="ROLLING"/>
    </appender>
    <logger name="ImagesDownLoad" additivity="false">
        <level value="INFO" />
        <appender-ref ref="STDOUT" />
    </logger>

    <root level="INFO">
        <appender-ref ref="ASYNC"/>
    </root>
</configuration>

dockerfile

FROM openjdk:8-jre

ARG PACKAGE="XXXXXXXXXXXXX-1.0-SNAPSHOT-dist.zip"

COPY target/${PACKAGE} /${PACKAGE}
COPY XXX.jks /var/lib/XXX.jks

RUN mkdir /build && \
    unzip /${PACKAGE} -d /build

EXPOSE 9000

ENTRYPOINT ["java", "-cp", "/build/*", "含有main的类全名"]

yaml文件：

apiVersion: batch/v1beta1
kind: CronJob
metadata:
  name: XXXXXX
spec:
  schedule: "*/30 * * * *"   // 每隔30分钟执行一次
  jobTemplate:
    spec:
      template:
        spec:
          imagePullSecrets:
            - name: XXXXXXXXX-key    // pull image的时候，需要认证
          containers:
          - name: imagedownload
            image: 私有image仓库的地址/imagedownloadjob:259
            env:
              - name: DB_HOST
                value: "XXXXXXX"
          restartPolicy: OnFailure

过程：

1: 在工程目录下：   mvn clean pcage -P dist           // 打包，安装POM中定义的dist的方式进行打包

2:  创建docker 镜像：

　　　docker build -t url/forecasting/imagedownloadjob:196 --compress --force-rm --build-arg VERSION=196 --build-arg                        MICROSERVICE=job.imagedownloadjob --build-arg REPOSITORY=url/forecasting/imagedownloadjob .

(  -t, --tag list                Name and optionally a tag in the

--compress                Compress the build context using gzip

--force-rm                Always remove intermediate containers

--build-arg list          Set build-time variables)

3:  推送docker镜像到私有仓库之前，先要登录一下docker仓库     docker login URL

把docker镜像推到私有仓库：

docker push url/forecasting/imagedownloadjob:196

通过pull命令验证是否推送成功
            docker pull url/forecasting/imagedownloadjob:196

        4：  kubectl create -f cronjob.yaml //创建job

              kubectl get cronjob hello //查看job状态

kubectl get jobs --watch // 查看

kubectl describe pod fail-1036623984-hxoas // 查看pod失败的原因

kubectl delete cronjob hello //删除cronjob

使用kubectl delete jobs –all可以删除当前namespaces下所有的job