如何在docker swarm中为flink独立作业集群指定作业工件?

57hvy0tb  于 2021-06-21  发布在  Flink
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有一个docker swarm作业集群的配置示例:

docker service create \
  --name flink-jobmanager \
  --env FLINK_PROPERTIES="${FLINK_PROPERTIES}" \
  --mount type=bind,source=/host/path/to/job/artifacts,target=/opt/flink/usrlib \
  -p 8081:8081 \
  --network flink-job \
  flink:1.11.0-scala_2.11 \
    standalone-job \
    --job-classname com.job.ClassName \
    [--job-id <job id>] \
    [--fromSavepoint /path/to/savepoint [--allowNonRestoredState]] \
    [job arguments]

这意味着您将一个flink工件jar文件装载到容器的 /opt/flink/usrlib ,并执行一个名为 --job-classname .
我的问题是,如果我有许多工件具有相同的jobname(mainclass),flink如何决定执行哪个工件?有没有办法在独立作业命令中指定作业工件?
此外,我使用nfs卷来装载容器的 /opt/flink/usrlib ,卷配置如下:

flink_usrlib:
    driver_opts:
      type: "nfs"
      o: "addr=10.225.32.64,nolock,soft,rw"
      device: ":/opt/nfs/flink/usrlib"

所有flink artifact jar文件都定位nfs服务器的路径: /opt/nfs/flink/usrlib ,我想我可以用一个flink工件设置一个卷,所以它将只有一个工件装载到flink容器,如下所示:

flink-jobmanager-1:
    image: flink:1.10.1-scala_2.12
    depends_on:
      - zookeeper
    ports:
      - "18081:8081"
    volumes:
      - flink_usrlib_artifact1:/opt/flink/usrlib
      - flink_share:/opt/flink/share
      - /etc/localtime:/etc/localtime:ro

flink-jobmanager-2:
    image: flink:1.10.1-scala_2.12
    depends_on:
      - zookeeper
    ports:
      - "18082:8081"
    volumes:
      - flink_usrlib_artifact2:/opt/flink/usrlib
      - flink_share:/opt/flink/share
      - /etc/localtime:/etc/localtime:ro

volumes: 
    flink_usrlib_artifact1:
      driver_opts:
        type: "nfs"
        o: "addr=10.225.32.64,nolock,soft,rw"
        device: ":/opt/nfs/flink/usrlib/artifact1_path"

    flink_usrlib_artifact2:
      driver_opts:
        type: "nfs"
        o: "addr=10.225.32.64,nolock,soft,rw"
        device: ":/opt/nfs/flink/usrlib/artifact2_path"

但这种配置是非常多余的。我可以这样绑定nfs用户卷:

flink-jobmanager-1:
    image: flink:1.10.1-scala_2.12
    depends_on:
      - zookeeper
    ports:
      - "18081:8081"
    volumes:
      - flink_usrlib/artifact1.jar:/opt/flink/usrlib/artifact1.jar
      - flink_share:/opt/flink/share
      - /etc/localtime:/etc/localtime:ro

flink-jobmanager-2:
    image: flink:1.10.1-scala_2.12
    depends_on:
      - zookeeper
    ports:
      - "18082:8081"
    volumes:
      - flink_usrlib/artifact2.jar:/opt/flink/usrlib/artifact2.jar
      - flink_share:/opt/flink/share
      - /etc/localtime:/etc/localtime:ro

volumes: 
    flink_usrlib:
      driver_opts:
        type: "nfs"
        o: "addr=10.225.32.64,nolock,soft,rw"
        device: ":/opt/nfs/flink/usrlib"

如果可行的话,我的问题也可以解决。
总的来说,我有一个问题:
如何在docker swarm中为flink独立作业集群配置作业工件?
经过我自己的分析,变成了两个问题:
如何在flink独立作业集群中指定作业工件?
docker nfs卷能否将不同的子路径绑定到容器?
如果您能提供任何建议或解决方案,我将不胜感激。

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