kubernetes+springboot+CronJob 定时任务配置如下代码:
- cronjob.yaml k8s 文件
apiVersion: batch/v1 kind: CronJob metadata: name: k8s-springboot-demo namespace: rz-dt spec: failedJobsHistoryLimit: 3 #执行失败job任务保留数量 successfulJobsHistoryLimit: 5 #执行成功job任务保留数量 startingDeadlineSeconds: 180 concurrencyPolicy: Forbid schedule: "*/1 * * * *" #每分钟执行一次 jobTemplate: spec: template: spec: containers: - name: k8s-springboot-demo image: rz-dt-image-server-registry-vpc.cn-shanghai.cr.aliyuncs.com/rz-dt/k8s-springboot-demo:$IMG_TAG imagePullPolicy: Always #command: ["java","-jar","/usr/local/cenobitor/k8s-springboot-demo.jar"]#dockerfile已有此处不需要配置 args: ["sendEmail","sendEmail2"] # 配置任务类的名称 volumeMounts: - name: time-config mountPath: /etc/localtime readOnly: true #envFrom: # - configMapRef: # name: smcp-config # - secretRef: # name: smcp-service-secret resources: requests: cpu: "250m" memory: 216Mi limits: cpu: "500m" memory: 512Mi restartPolicy: Never #从私有仓库拉取镜像凭证 imagePullSecrets: - name: rz-dt-miyue-vpc volumes: - name: time-config hostPath: path: /usr/share/zoneinfo/Asia/Shanghai
- Dockerfile 文件
#基础镜像,如果本地仓库没有,会从远程仓库拉取 openjdk:8 FROM openjdk:8 #暴露端口 EXPOSE 8089 #容器中创建目录 RUN mkdir -p /usr/local/cenobitor #编译后的jar包copy到容器中创建到目录内 COPY target/k8s-springboot-demo.jar /usr/local/cenobitor/k8s-springboot-demo.jar #指定容器时区 RUN rm -f /etc/localtime \ && ln -sv /usr/share/zoneinfo/Asia/Shanghai /etc/localtime \ && echo "Asia/Shanghai" > /etc/timezone #指定容器启动时要执行的命令 ENTRYPOINT ["java","-jar","/usr/local/cenobitor/k8s-springboot-demo.jar"]
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test.sh 文件
echo "开始制作镜像..." image_tag=`date +%Y-%m-%d-%H-%M-%S` #_%H%M echo "当前时间:$image_tag" docker build -t k8s-springboot-demo:${image_tag} . echo "制作镜像成功!" echo "登录" sudo docker login --username=aliyun0398513152 rz-dt-image-server-registry-vpc.cn-shanghai.cr.aliyuncs.com --password=1234 echo "镜像最新版本提交" docker tag k8s-springboot-demo:${image_tag} rz-dt-image-server-registry-vpc.cn-shanghai.cr.aliyuncs.com/rz-dt/k8s-springboot-demo:${image_tag} docker push rz-dt-image-server-registry-vpc.cn-shanghai.cr.aliyuncs.com/rz-dt/k8s-springboot-demo:${image_tag} echo "k8s一键部署" export IMG_TAG=${image_tag} envsubst < cronjob.yaml | kubectl --kubeconfig ~/.kube-rz/config apply -f -
4个代码实现类:
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package com.example.demo.job; public interface Command { /** * 遵循Unix约定,如果命令执行正常,则返回0;否则为非0。 */ int execute(String... args); } package com.example.demo.job; import lombok.extern.slf4j.Slf4j; import org.springframework.stereotype.Component; @Component @Slf4j public class SendEmailCommand implements Command { @Override public int execute(String... args) { try { // 省略业务逻辑代码 for (String arg:args) { log.info("send email success args:" +arg); } log.info("send email success"); return 0; } catch (Exception e) { log.error("send email error", e); return -1; } } } package com.example.demo.job; import lombok.extern.slf4j.Slf4j; import org.springframework.stereotype.Component; @Component @Slf4j public class SendEmail2Command implements Command { @Override public int execute(String... args) { try { // 省略业务逻辑代码 for (String arg:args) { log.info("send email 2 success args:" +arg); } log.info("send email 2 success"); return 0; } catch (Exception e) { log.error("send email error", e); return -1; } } } package com.example.demo.job; import lombok.extern.slf4j.Slf4j; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.CommandLineRunner; import org.springframework.stereotype.Component; import javax.annotation.PostConstruct; import java.util.Arrays; import java.util.HashMap; import java.util.Map; @Component @Slf4j public class ProjectCommandLineRunner implements CommandLineRunner { Map<String, Command> commandMap = new HashMap<>(); @Autowired private SendEmailCommand sendEmailCommand; @Autowired private SendEmail2Command sendEmail2Command; @PostConstruct private void init() { commandMap.put("sendEmail", sendEmailCommand); commandMap.put("sendEmail2", sendEmail2Command); } @Override public void run(String... args) throws Exception { if (args.length == 0) { return; } if (!commandMap.containsKey(args[0])) { log.error("'{}' command not found", args[0]); System.exit(-1); } for (String arg:args) { log.info("command args:" +arg); } for (int i = 0; i < args.length; i++) { Command command = commandMap.get(args[i]); String[] arguments = Arrays.copyOfRange(args, 0, args.length); command.execute(arguments); } //执行成功则,正常退出0, 异常退出非0 System.exit(0); } }
kubectl 客户端执行,sh test.sh :
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