1.故障现象：

阿里云ECS服务器：Welcome to Ubuntu 22.04.2 LTS (GNU/Linux 5.15.0-73-generic x86_64)
上用docker部署elasticsearch服务。

因为偷懒直接用的 snap软件包管理器安装的docker。安装docker的版本信息为：

部署es或者redis等服务时，发现用docker挂载一直比较奇怪。要么是报错：

docker: Error response from daemon: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: error mounting "/data/redis/conf/redis.conf" to rootfs at "/etc/redis/redis.conf": mount /data/redis/conf/redis.conf:/etc/redis/redis.conf (via /proc/self/fd/6), flags: 0x5000: not a directory: unknown: Are you trying to mount a directory onto a file (or vice-versa)" />if the specified host path exists and is the expected type

大概意思是：把文件/data/redis/conf/redis.conf挂载到目录上 /etc/redis/redis.conf docker把挂载文件解析成了目录(/etc/redis/redis.conf)，或者反向:把/data/redis/conf/redis.conf 解析成目录，/etc/redis/redis.conf解析成文件。所以报错，目录不能挂载到文件上。

要么是elasticsearch启动时报错：

root@i3rm4tzkh:/dockerdir/tools# docker logs -f esOpenJDK 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.[2023-08-24T01:47:35,687][INFO ][o.e.n.Node ] [] initializing ...[2023-08-24T01:47:35,704][WARN ][o.e.b.ElasticsearchUncaughtExceptionHandler] [] uncaught exception in thread [main]org.elasticsearch.bootstrap.StartupException: java.lang.IllegalStateException: Failed to create node environmentat org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:140) ~[elasticsearch-6.4.3.jar:6.4.3]at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:127) ~[elasticsearch-6.4.3.jar:6.4.3]at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) ~[elasticsearch-6.4.3.jar:6.4.3]at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:124) ~[elasticsearch-cli-6.4.3.jar:6.4.3]at org.elasticsearch.cli.Command.main(Command.java:90) ~[elasticsearch-cli-6.4.3.jar:6.4.3]at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:93) ~[elasticsearch-6.4.3.jar:6.4.3]at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:86) ~[elasticsearch-6.4.3.jar:6.4.3]Caused by: java.lang.IllegalStateException: Failed to create node environmentat org.elasticsearch.node.Node.(Node.java:277) ~[elasticsearch-6.4.3.jar:6.4.3]at org.elasticsearch.node.Node.(Node.java:256) ~[elasticsearch-6.4.3.jar:6.4.3]at org.elasticsearch.bootstrap.Bootstrap$5.(Bootstrap.java:213) ~[elasticsearch-6.4.3.jar:6.4.3]at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:213) ~[elasticsearch-6.4.3.jar:6.4.3]at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:326) ~[elasticsearch-6.4.3.jar:6.4.3]at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:136) ~[elasticsearch-6.4.3.jar:6.4.3]... 6 moreCaused by: java.nio.file.AccessDeniedException: /usr/share/elasticsearch/data/nodesat sun.nio.fs.UnixException.translateToIOException(UnixException.java:90) ~[?:?]at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:111) ~[?:?]at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:116) ~[?:?]at sun.nio.fs.UnixFileSystemProvider.createDirectory(UnixFileSystemProvider.java:385) ~[?:?]at java.nio.file.Files.createDirectory(Files.java:682) ~[?:?]at java.nio.file.Files.createAndCheckIsDirectory(Files.java:789) ~[?:?]at java.nio.file.Files.createDirectories(Files.java:775) ~[?:?]at org.elasticsearch.env.NodeEnvironment.(NodeEnvironment.java:207) ~[elasticsearch-6.4.3.jar:6.4.3]at org.elasticsearch.node.Node.(Node.java:274) ~[elasticsearch-6.4.3.jar:6.4.3]at org.elasticsearch.node.Node.(Node.java:256) ~[elasticsearch-6.4.3.jar:6.4.3]at org.elasticsearch.bootstrap.Bootstrap$5.(Bootstrap.java:213) ~[elasticsearch-6.4.3.jar:6.4.3]at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:213) ~[elasticsearch-6.4.3.jar:6.4.3]at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:326) ~[elasticsearch-6.4.3.jar:6.4.3]at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:136) ~[elasticsearch-6.4.3.jar:6.4.3]... 6 more

另附运行脚本：

docker run -d --name es-e "ES_JAVA_OPTS=-Xms4096m -Xmx4096m"-e "discovery.type=single-node"-v /data/elasticsearch/data:/usr/share/elasticsearch/data:rw-v /data/elasticsearch/plugins:/usr/share/elasticsearch/plugins:rw --privileged-p 9200:9200-p 9300:9300 elasticsearch:6.4.3

2. 问题解决：

百度后做过各种尝试都没成功：

  1. /data/elasticsearch/data 修改目录权限 777
  2. 关闭 selinux
  3. 将挂载文件 改为挂载目录

各种尝试都失败后怀疑是es版本问题。修改es版本后结果问题依旧。

最终解决：找了个其他环境的docker版本：23.0.2 【问题解决】

root@iZwz93rm3yZ:~# docker versionClient: Docker Engine - Community Version: 23.0.2 API version: 1.42 Go version:go1.19.7 Git commit:569dd73 Built: Mon Mar 27 16:16:30 2023 OS/Arch: linux/amd64 Context: defaultServer: Docker Engine - Community Engine:Version:23.0.2API version:1.42 (minimum version 1.12)Go version: go1.19.7Git commit: 219f21bBuilt:Mon Mar 27 16:16:30 2023OS/Arch:linux/amd64Experimental: false containerd:Version:1.6.22GitCommit:8165feabfdfe38c65b599c4993d227328c231fca runc:Version:1.1.8GitCommit:v1.1.8-0-g82f18fe docker-init:Version:0.19.0GitCommit:de40ad0