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
