我有三台主机，每台主机上都安装了docker。我希望在三个容器之间有一个分布式文件系统HDFS。因此，我必须制作一个Hadoop集群。我使用此docker文件制作hadoop镜像。

FROM ubuntu_mesos
ENV HADOOP_HOME /opt/hadoop
ENV JAVA_HOME /usr/lib/jvm/java-8-openjdk-amd64
RUN apt-get update && apt-get install -y ssh rsync vim openjdk-8-jdk
# download and extract hadoop, set JAVA_HOME in hadoop-env.sh, update 
path
RUN wget https://archive.apache.org/dist/hadoop/core/hadoop- 
3.1.0/hadoop-3.1.0.tar.gz && tar -xzf hadoop-3.1.0.tar.gz && \
mv hadoop-3.1.0 $HADOOP_HOME && \
echo "export JAVA_HOME=$JAVA_HOME" >> $HADOOP_HOME/etc/hadoop/
hadoop-env.sh && \
echo "PATH=$PATH:$HADOOP_HOME/bin" >> ~/.bashrc
# create ssh keys
RUN ssh-keygen -t rsa -P '' -f ~/.ssh/id_rsa && cat ~/.ssh/id_rsa.pub 
>> ~/.ssh/authorized_keys && chmod 0600 ~/.ssh/authorized_keys
ADD core-site.xml $HADOOP_HOME/etc/hadoop/
ADD hdfs-site.xml $HADOOP_HOME/etc/hadoop/
ADD mapred-site.xml $HADOOP_HOME/etc/hadoop/
ADD mapred-site.xml $HADOOP_HOME/etc/hadoop/
ADD ssh_config /root/.ssh/config
COPY start-hadoop.sh start-hadoop.sh
EXPOSE 22 9000 8088 50070 50075 50030 50060
RUN echo export HDFS_NAMENODE_USER="root" >> 
$HADOOP_HOME/etc/hadoop/hadoop-env.sh 
RUN echo export HDFS_DATANODE_USER="root" >> 
$HADOOP_HOME/etc/hadoop/hadoop-env.sh
RUN echo export HDFS_SECONDARYNAMENODE_USER="root" >> 
$HADOOP_HOME/etc/hadoop/hadoop-env.sh
RUN echo export YARN_RESOURCEMANAGER_USER="root" >> 
$HADOOP_HOME/etc/hadoop/hadoop-env.sh
RUN echo export YARN_NODEMANAGER_USER="root" >> 
$HADOOP_HOME/etc/hadoop/hadoop-env.sh

docker plugin install weaveworks/net-plugin:latest_release
docker network create --driver=weaveworks/net-plugin:latest_release 
--attachable mycontainernetwork

sudo weave launch <IP address of first host> <IP address of second 
host>

 sudo docker run -it --net mycontainernetwork my-hadoop

 ping -c 1 -q ContainerID

 ssh e121a0ef81ef

ssh: connect to host e121a0ef81ef port 22: Connection refused

“e121a0ef81ef”是我的容器ID。

我很困惑，不知道如何解决问题。你能帮我吗？

任何帮助，将不胜感激。

最佳答案

问题解决了。我做了这些阶段:
首先，我使ssh在三台主机之间没有密码。
在三位主持人中:

 ssh-keygen

 ssh-copy-id user@ip

sudo docker run -it -v /home/user/.ssh:/root/.ssh --net mycontainernetwork
 --privileged my-hadoop

ssh -v user@ip

  /etc/init.d/ssh restart 

  service ssh restart

chmod 600 ~/.ssh/*

关于docker - ssh:连接到主机e121a0ef81ef(容器ID)端口22: docker 中的连接被拒绝，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55119564/