I am fairly new to both hadoop and docker.
我对hadoop和docker都很新。
I haven been working on extending the cloudera/quickstart docker image docker file and wanted to mount a directory form host and map it to hdfs location, so that performance is increased and data are persist localy.
我一直在努力扩展cloudera / quickstart docker image docker文件，并希望安装目录表单主机并将其映射到hdfs位置，以便提高性能并保持数据持久化。
When i mount volume anywhere with -v /localdir:/someDir everything works fine, but that's not my goal. But when i do -v /localdir:/var/lib/hadoop-hdfs both datanode and namenode fails to start and I get : "cd /var/lib/hadoop-hdfs: Permission denied". And when i do -v /localdir:/var/lib/hadoop-hdfs/cache no permission denied but datanode and namenode, or one of them fails to start on starting the docker image and i can't find any useful information in log files about the reason for that.
当我使用-v / localdir在任何地方装载卷：/ someDir一切正常，但这不是我的目标。但当我做-v / localdir：/ var / lib / hadoop-hdfs时，datanode和namenode都无法启动，我得到：“cd / var / lib / hadoop-hdfs：Permission denied”。当我做-v / localdir：/ var / lib / hadoop-hdfs / cache没有权限被拒绝但datanode和namenode，或其中一个无法启动启动docker镜像，我在日志中找不到任何有用的信息关于其原因的文件。
Mayby someone came across this problem, or have some other solution for putting hdfs outside the docker container?
Mayby有人遇到过这个问题，或者有其他解决办法将hdfs放在docker容器之外？
1 个解决方案
#1
0
You should run a
你应该跑一个
docker exec -it "YOUR CLOUDERA CONTAINER" chown -R hdfs:hadoop /var/lib/hadoop-hdfs/
#1
0
You should run a
你应该跑一个
docker exec -it "YOUR CLOUDERA CONTAINER" chown -R hdfs:hadoop /var/lib/hadoop-hdfs/