docker compose + image elasticsearch 的问题：6.8.0

Question

我试图将版本从我的弹性映像从 5.6 升级到 6.8.0，但是当我运行时ddev startES 容器没有启动。

来自 elasticsearch 服务的 DDEV 日志

OpenJDK 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
OpenJDK 64-Bit Server VM warning: UseAVX=2 is not supported on this CPU, setting it to UseAVX=1
[2020-02-28T21:32:29,269][WARN ][o.e.b.ElasticsearchUncaughtExceptionHandler] [unknown] uncaught exception in thread [main]
org.elasticsearch.bootstrap.StartupException: java.lang.IllegalStateException: failed to obtain node locks, tried [[/usr/share/elasticsearch/data]] with lock id [0]; maybe these locations are not writable or multiple nodes were started without increasing [node.max_local_storage_nodes] (was [1])?
    at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:163) ~[elasticsearch-6.8.0.jar:6.8.0]
    at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:150) ~[elasticsearch-6.8.0.jar:6.8.0]
    at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) ~[elasticsearch-6.8.0.jar:6.8.0]
    at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:124) ~[elasticsearch-cli-6.8.0.jar:6.8.0]
    at org.elasticsearch.cli.Command.main(Command.java:90) ~[elasticsearch-cli-6.8.0.jar:6.8.0]
    at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:116) ~[elasticsearch-6.8.0.jar:6.8.0]
    at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:93) ~[elasticsearch-6.8.0.jar:6.8.0]
Caused by: java.lang.IllegalStateException: failed to obtain node locks, tried [[/usr/share/elasticsearch/data]] with lock id [0]; maybe these locations are not writable or multiple nodes were started without increasing [node.max_local_storage_nodes] (was [1])?

此外，我无法使用该mem_limit参数，因为我使用的是最新版本 3.0。

docker-compose.elasticsearch.yaml：

version: '3.6'
services:
  elasticsearch:
    container_name: ddev-${DDEV_SITENAME}-elasticsearch
    hostname: ${DDEV_SITENAME}-elasticsearch
    image: elasticsearch:6.8.0
    ports:
      - "9200"
      - "9300"
    environment:
      - cluster.name=docker-cluster
      - bootstrap.memory_lock=true
      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
      - VIRTUAL_HOST=$DDEV_HOSTNAME
      - HTTP_EXPOSE=9200
    ulimits:
      memlock:
        soft: -1
        hard: -1
    labels:
      com.ddev.site-name: ${DDEV_SITENAME}
      com.ddev.approot: $DDEV_APPROOT
    volumes:
      - elasticsearch:/usr/share/elasticsearch/data
      - ".:/mnt/ddev_config"
  web:
    links:
      - elasticsearch:elasticsearch

volumes:
  elasticsearch:
    name: "${DDEV_SITENAME}-elasticsearch"

我做错了什么或还缺少什么？

更新

我已经根据此处发布的解决方案尝试了以下解决方案

 version: '3.6'
services:
  elasticsearch:
    container_name: ddev-${DDEV_SITENAME}-elasticsearch
    hostname: ${DDEV_SITENAME}-elasticsearch
    image: elasticsearch:6.8.0
    ports:
      - "9200"
      - "9300"
    environment:
      - cluster.name=docker-cluster
      - bootstrap.memory_lock=true
      - "ES_JAVA_OPTS=-Xmx1024m -Xms1024m"
      - VIRTUAL_HOST=$DDEV_HOSTNAME
      - HTTP_EXPOSE=9200
      - node.max_local_storage_nodes=3
    ulimits:
      memlock:
        soft: -1
        hard: -1
    labels:
      com.ddev.site-name: ${DDEV_SITENAME}
      com.ddev.approot: $DDEV_APPROOT
    volumes:
      - elasticsearch:/usr/share/elasticsearch/data
      - ".:/mnt/ddev_config"
  web:
    links:
      - elasticsearch:elasticsearch

volumes:
  elasticsearch:
    name: "${DDEV_SITENAME}-elasticsearch"

但现在，抛出以下错误：

Answer 1

我在 ubuntu AWS 实例上安装 ES 7.6 时遇到了同样的问题，该实例已经安装了另一个 ES 版本。如果您仔细查看错误消息的末尾，它会提到：

引起：java.lang.IllegalStateException: 无法获得节点锁，尝试 [[/usr/share/elasticsearch/data]] 与锁 ID [0]；也许这些位置是不可写的，或者在没有增加 [node.max_local_storage_nodes] 的情况下启动了多个节点（是 [1]）？

请参阅官方 ES 文档中有关此设置的更多详细信息。

要解决此问题，您需要node.max_local_storage_nodes在 elasticsearch.yml 文件中设置为 1 以上。

org.elasticsearch.env.NodeEnvironment#NodeEnvironment方法中的 Elasticsearch 源代码中提供了有关错误的更多信息。

if (nodeLock == null) {
    final String message = String.format(
        Locale.ROOT,
        "failed to obtain node locks, tried [%s] with lock id%s;" +
            " maybe these locations are not writable or multiple nodes were started without increasing [%s] (was [%d])?",
        Arrays.toString(environment.dataFiles()),
        maxLocalStorageNodes == 1 ? " [0]" : "s [0--" + (maxLocalStorageNodes - 1) + "]",
        MAX_LOCAL_STORAGE_NODES_SETTING.getKey(),
        maxLocalStorageNodes);
    throw new IllegalStateException(message, lastException);
}